./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_find_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/array-examples/standard_find_ground-1.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '104899a801011b0e3641a72d1ef00a1787a9f1724318580031d49da34b73c0d4'] 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-examples/standard_find_ground-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 104899a801011b0e3641a72d1ef00a1787a9f1724318580031d49da34b73c0d4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:09:30,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:09:30,816 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:09:30,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:09:30,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:09:30,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:09:30,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:09:30,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:09:30,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:09:30,859 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:09:30,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:09:30,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:09:30,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:09:30,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:09:30,860 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:09:30,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:09:30,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:09:30,861 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:09:30,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:09:30,861 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:09:30,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:09:30,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:09:30,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:09:30,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:09:30,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:09:30,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:09:30,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:09:30,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:09:30,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:09:30,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:09:30,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:09:30,862 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:09:30,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:09:30,862 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:09:30,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:09:30,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:09:30,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:09:30,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:09:30,863 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:09:30,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:09:30,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:09:30,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:09:30,863 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 -> 104899a801011b0e3641a72d1ef00a1787a9f1724318580031d49da34b73c0d4 [2024-11-06 18:09:31,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:09:31,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:09:31,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:09:31,150 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:09:31,150 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:09:31,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_find_ground-1.i [2024-11-06 18:09:32,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:09:32,746 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:09:32,749 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_find_ground-1.i [2024-11-06 18:09:32,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2be02c76e/8f6d79d17d7c43389072dde8ec7a3aa3/FLAG5c8520662 [2024-11-06 18:09:33,031 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2be02c76e/8f6d79d17d7c43389072dde8ec7a3aa3 [2024-11-06 18:09:33,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:09:33,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:09:33,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:09:33,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:09:33,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:09:33,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f2fea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33, skipping insertion in model container [2024-11-06 18:09:33,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,059 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:09:33,193 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-examples/standard_find_ground-1.i[855,868] [2024-11-06 18:09:33,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:09:33,214 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:09:33,223 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-examples/standard_find_ground-1.i[855,868] [2024-11-06 18:09:33,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:09:33,243 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:09:33,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33 WrapperNode [2024-11-06 18:09:33,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:09:33,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:09:33,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:09:33,247 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:09:33,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,277 INFO L138 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2024-11-06 18:09:33,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:09:33,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:09:33,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:09:33,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:09:33,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,300 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-06 18:09:33,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:09:33,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:09:33,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:09:33,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:09:33,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (1/1) ... [2024-11-06 18:09:33,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:09:33,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:09:33,356 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 18:09:33,359 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 18:09:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:09:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:09:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 18:09:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 18:09:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 18:09:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 18:09:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:09:33,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:09:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 18:09:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 18:09:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 18:09:33,439 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:09:33,441 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:09:33,556 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-06 18:09:33,556 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:09:33,563 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:09:33,563 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-06 18:09:33,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:09:33 BoogieIcfgContainer [2024-11-06 18:09:33,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:09:33,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:09:33,567 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:09:33,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:09:33,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:09:33" (1/3) ... [2024-11-06 18:09:33,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71974502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:09:33, skipping insertion in model container [2024-11-06 18:09:33,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:33" (2/3) ... [2024-11-06 18:09:33,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71974502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:09:33, skipping insertion in model container [2024-11-06 18:09:33,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:09:33" (3/3) ... [2024-11-06 18:09:33,574 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_find_ground-1.i [2024-11-06 18:09:33,589 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:09:33,590 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:09:33,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:09:33,646 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;@533e93a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:09:33,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:09:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:33,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-06 18:09:33,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:09:33,659 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:09:33,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:09:33,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:09:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash 227193477, now seen corresponding path program 1 times [2024-11-06 18:09:33,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:09:33,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001372341] [2024-11-06 18:09:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:33,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:09:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:09:33,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:09:33,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001372341] [2024-11-06 18:09:33,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001372341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:09:33,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:09:33,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:09:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583882625] [2024-11-06 18:09:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:09:33,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:09:33,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:09:33,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:09:33,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:09:33,873 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:09:33,903 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2024-11-06 18:09:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:09:33,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-06 18:09:33,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:09:33,915 INFO L225 Difference]: With dead ends: 34 [2024-11-06 18:09:33,915 INFO L226 Difference]: Without dead ends: 16 [2024-11-06 18:09:33,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:09:33,921 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:09:33,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:09:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-06 18:09:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-06 18:09:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-11-06 18:09:33,944 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2024-11-06 18:09:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:09:33,944 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-06 18:09:33,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-11-06 18:09:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-06 18:09:33,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:09:33,945 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:09:33,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:09:33,946 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:09:33,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:09:33,946 INFO L85 PathProgramCache]: Analyzing trace with hash -375054400, now seen corresponding path program 1 times [2024-11-06 18:09:33,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:09:33,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857856077] [2024-11-06 18:09:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:33,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:09:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:09:34,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:09:34,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857856077] [2024-11-06 18:09:34,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857856077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:09:34,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161059253] [2024-11-06 18:09:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:34,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:09:34,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:09:34,075 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 18:09:34,076 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 18:09:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:34,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:09:34,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:09:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:09:34,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:09:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:09:34,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161059253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:09:34,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:09:34,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-06 18:09:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576195703] [2024-11-06 18:09:34,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:09:34,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 18:09:34,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:09:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 18:09:34,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:09:34,252 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:09:34,291 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2024-11-06 18:09:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:09:34,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-06 18:09:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:09:34,293 INFO L225 Difference]: With dead ends: 31 [2024-11-06 18:09:34,293 INFO L226 Difference]: Without dead ends: 21 [2024-11-06 18:09:34,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:09:34,294 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:09:34,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:09:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-06 18:09:34,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-06 18:09:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-06 18:09:34,305 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2024-11-06 18:09:34,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:09:34,305 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-06 18:09:34,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-06 18:09:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-06 18:09:34,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:09:34,306 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:09:34,324 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 18:09:34,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:09:34,507 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:09:34,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:09:34,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1899398074, now seen corresponding path program 2 times [2024-11-06 18:09:34,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:09:34,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028564461] [2024-11-06 18:09:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:09:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:09:34,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:09:34,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028564461] [2024-11-06 18:09:34,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028564461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:09:34,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:09:34,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:09:34,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394991218] [2024-11-06 18:09:34,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:09:34,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:09:34,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:09:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:09:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:09:34,659 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:09:34,686 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-11-06 18:09:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:09:34,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-06 18:09:34,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:09:34,687 INFO L225 Difference]: With dead ends: 32 [2024-11-06 18:09:34,688 INFO L226 Difference]: Without dead ends: 24 [2024-11-06 18:09:34,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:09:34,690 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:09:34,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:09:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-06 18:09:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-06 18:09:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-06 18:09:34,699 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2024-11-06 18:09:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:09:34,700 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-06 18:09:34,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-06 18:09:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-06 18:09:34,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:09:34,701 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:09:34,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 18:09:34,701 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:09:34,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:09:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash -599526043, now seen corresponding path program 1 times [2024-11-06 18:09:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:09:34,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489318504] [2024-11-06 18:09:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:34,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:09:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 18:09:34,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:09:34,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489318504] [2024-11-06 18:09:34,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489318504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:09:34,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960012581] [2024-11-06 18:09:34,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:34,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:09:34,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:09:34,904 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 18:09:34,906 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 18:09:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:34,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:09:34,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:09:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 18:09:35,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:09:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 18:09:35,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960012581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:09:35,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:09:35,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-06 18:09:35,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920401524] [2024-11-06 18:09:35,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:09:35,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 18:09:35,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:09:35,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 18:09:35,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-06 18:09:35,127 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:09:35,168 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-11-06 18:09:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 18:09:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-06 18:09:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:09:35,170 INFO L225 Difference]: With dead ends: 49 [2024-11-06 18:09:35,170 INFO L226 Difference]: Without dead ends: 36 [2024-11-06 18:09:35,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-06 18:09:35,172 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:09:35,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:09:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-06 18:09:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-06 18:09:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-06 18:09:35,179 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 21 [2024-11-06 18:09:35,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:09:35,179 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-06 18:09:35,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-06 18:09:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-06 18:09:35,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:09:35,182 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:09:35,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 18:09:35,386 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 18:09:35,387 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:09:35,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:09:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1865061977, now seen corresponding path program 2 times [2024-11-06 18:09:35,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:09:35,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675126493] [2024-11-06 18:09:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:35,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:09:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 18:09:35,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:09:35,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675126493] [2024-11-06 18:09:35,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675126493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:09:35,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507180557] [2024-11-06 18:09:35,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:09:35,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:09:35,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:09:35,710 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 18:09:35,712 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 18:09:35,798 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:09:35,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:09:35,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 18:09:35,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:09:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 18:09:35,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:09:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 18:09:36,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507180557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:09:36,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:09:36,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-06 18:09:36,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563386123] [2024-11-06 18:09:36,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:09:36,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-06 18:09:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:09:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-06 18:09:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-06 18:09:36,164 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:09:36,259 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-11-06 18:09:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-06 18:09:36,259 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-06 18:09:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:09:36,260 INFO L225 Difference]: With dead ends: 73 [2024-11-06 18:09:36,260 INFO L226 Difference]: Without dead ends: 60 [2024-11-06 18:09:36,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-06 18:09:36,261 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:09:36,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 93 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:09:36,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-06 18:09:36,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-06 18:09:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2024-11-06 18:09:36,277 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 33 [2024-11-06 18:09:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:09:36,278 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2024-11-06 18:09:36,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2024-11-06 18:09:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-06 18:09:36,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:09:36,280 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:09:36,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 18:09:36,483 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 18:09:36,484 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:09:36,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:09:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash 18050625, now seen corresponding path program 3 times [2024-11-06 18:09:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:09:36,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665545308] [2024-11-06 18:09:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:36,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:09:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 18:09:37,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:09:37,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665545308] [2024-11-06 18:09:37,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665545308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:09:37,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923652484] [2024-11-06 18:09:37,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:09:37,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:09:37,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:09:37,248 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 18:09:37,250 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 18:09:37,332 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-06 18:09:37,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:09:37,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 18:09:37,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:09:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-06 18:09:37,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:09:37,828 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-06 18:09:37,829 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 15 treesize of output 7 [2024-11-06 18:09:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-06 18:09:37,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923652484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:09:37,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:09:37,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 34 [2024-11-06 18:09:37,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688385658] [2024-11-06 18:09:37,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:09:37,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-06 18:09:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:09:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-06 18:09:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=795, Unknown=0, NotChecked=0, Total=1122 [2024-11-06 18:09:37,935 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:09:38,671 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2024-11-06 18:09:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-06 18:09:38,673 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-06 18:09:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:09:38,673 INFO L225 Difference]: With dead ends: 81 [2024-11-06 18:09:38,673 INFO L226 Difference]: Without dead ends: 68 [2024-11-06 18:09:38,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=968, Invalid=2572, Unknown=0, NotChecked=0, Total=3540 [2024-11-06 18:09:38,677 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:09:38,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 105 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:09:38,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-06 18:09:38,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2024-11-06 18:09:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2024-11-06 18:09:38,689 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 57 [2024-11-06 18:09:38,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:09:38,690 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2024-11-06 18:09:38,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:38,691 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2024-11-06 18:09:38,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-06 18:09:38,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:09:38,692 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:09:38,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 18:09:38,896 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 18:09:38,897 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:09:38,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:09:38,898 INFO L85 PathProgramCache]: Analyzing trace with hash -242880523, now seen corresponding path program 1 times [2024-11-06 18:09:38,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:09:38,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308363946] [2024-11-06 18:09:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:38,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:09:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 18:09:39,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:09:39,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308363946] [2024-11-06 18:09:39,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308363946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:09:39,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416765502] [2024-11-06 18:09:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:39,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:09:39,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:09:39,566 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 18:09:39,567 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 18:09:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:39,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 18:09:39,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:09:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 18:09:39,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:09:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 18:09:40,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416765502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:09:40,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:09:40,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-11-06 18:09:40,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507050760] [2024-11-06 18:09:40,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:09:40,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-06 18:09:40,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:09:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-06 18:09:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-06 18:09:40,607 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 51 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:09:40,764 INFO L93 Difference]: Finished difference Result 129 states and 161 transitions. [2024-11-06 18:09:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-06 18:09:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 51 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-06 18:09:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:09:40,767 INFO L225 Difference]: With dead ends: 129 [2024-11-06 18:09:40,769 INFO L226 Difference]: Without dead ends: 114 [2024-11-06 18:09:40,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-06 18:09:40,772 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:09:40,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:09:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-06 18:09:40,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-06 18:09:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 113 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2024-11-06 18:09:40,789 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 63 [2024-11-06 18:09:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:09:40,792 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2024-11-06 18:09:40,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 51 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2024-11-06 18:09:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-06 18:09:40,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:09:40,793 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:09:40,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-06 18:09:40,994 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 18:09:40,995 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:09:40,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:09:40,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1880177283, now seen corresponding path program 2 times [2024-11-06 18:09:40,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:09:40,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110760170] [2024-11-06 18:09:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:40,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:09:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 18:09:43,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:09:43,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110760170] [2024-11-06 18:09:43,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110760170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:09:43,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019818520] [2024-11-06 18:09:43,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:09:43,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:09:43,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:09:43,026 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 18:09:43,028 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 18:09:43,196 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:09:43,196 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:09:43,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-06 18:09:43,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:09:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 18:09:43,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:09:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 18:09:45,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019818520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:09:45,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:09:45,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2024-11-06 18:09:45,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011840910] [2024-11-06 18:09:45,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:09:45,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-06 18:09:45,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:09:45,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-06 18:09:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-06 18:09:45,987 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand has 101 states, 101 states have (on average 2.089108910891089) internal successors, (211), 101 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:46,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:09:46,253 INFO L93 Difference]: Finished difference Result 229 states and 286 transitions. [2024-11-06 18:09:46,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-06 18:09:46,255 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.089108910891089) internal successors, (211), 101 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-06 18:09:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:09:46,257 INFO L225 Difference]: With dead ends: 229 [2024-11-06 18:09:46,257 INFO L226 Difference]: Without dead ends: 214 [2024-11-06 18:09:46,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-06 18:09:46,261 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:09:46,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:09:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-06 18:09:46,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-06 18:09:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.0234741784037558) internal successors, (218), 213 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 218 transitions. [2024-11-06 18:09:46,286 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 218 transitions. Word has length 113 [2024-11-06 18:09:46,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:09:46,286 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 218 transitions. [2024-11-06 18:09:46,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.089108910891089) internal successors, (211), 101 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 218 transitions. [2024-11-06 18:09:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-06 18:09:46,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:09:46,289 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:09:46,307 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 18:09:46,489 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 18:09:46,490 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:09:46,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:09:46,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1757589791, now seen corresponding path program 3 times [2024-11-06 18:09:46,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:09:46,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277062481] [2024-11-06 18:09:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:46,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:09:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:09:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9609 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 18:09:52,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:09:52,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277062481] [2024-11-06 18:09:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277062481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:09:52,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133469035] [2024-11-06 18:09:52,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:09:52,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:09:52,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:09:52,367 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 18:09:52,368 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 18:09:52,535 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-06 18:09:52,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:09:52,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 18:09:52,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:09:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9609 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9604 trivial. 0 not checked. [2024-11-06 18:09:52,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:09:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9609 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9604 trivial. 0 not checked. [2024-11-06 18:09:53,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133469035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:09:53,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:09:53,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 6, 6] total 107 [2024-11-06 18:09:53,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121029376] [2024-11-06 18:09:53,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:09:53,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-06 18:09:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:09:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-06 18:09:53,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5070, Invalid=6272, Unknown=0, NotChecked=0, Total=11342 [2024-11-06 18:09:53,247 INFO L87 Difference]: Start difference. First operand 214 states and 218 transitions. Second operand has 107 states, 107 states have (on average 2.1682242990654204) internal successors, (232), 107 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:57,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:09:57,090 INFO L93 Difference]: Finished difference Result 241 states and 251 transitions. [2024-11-06 18:09:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-06 18:09:57,091 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.1682242990654204) internal successors, (232), 107 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2024-11-06 18:09:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:09:57,092 INFO L225 Difference]: With dead ends: 241 [2024-11-06 18:09:57,093 INFO L226 Difference]: Without dead ends: 220 [2024-11-06 18:09:57,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 418 SyntacticMatches, 2 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5746 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=15267, Invalid=26963, Unknown=0, NotChecked=0, Total=42230 [2024-11-06 18:09:57,098 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:09:57,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 72 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:09:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-06 18:09:57,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2024-11-06 18:09:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.0275229357798166) internal successors, (224), 218 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 224 transitions. [2024-11-06 18:09:57,115 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 224 transitions. Word has length 213 [2024-11-06 18:09:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:09:57,116 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 224 transitions. [2024-11-06 18:09:57,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.1682242990654204) internal successors, (232), 107 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:09:57,117 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 224 transitions. [2024-11-06 18:09:57,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-06 18:09:57,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:09:57,119 INFO L215 NwaCegarLoop]: trace histogram [99, 99, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:09:57,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 18:09:57,322 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 18:09:57,323 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:09:57,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:09:57,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1659061018, now seen corresponding path program 4 times [2024-11-06 18:09:57,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:09:57,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944996318] [2024-11-06 18:09:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:09:57,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:09:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:10:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9812 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-06 18:10:02,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:10:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944996318] [2024-11-06 18:10:02,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944996318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:10:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420713859] [2024-11-06 18:10:02,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:10:02,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:10:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:10:02,446 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 18:10:02,448 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 18:10:02,710 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:10:02,711 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:10:02,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-06 18:10:02,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:10:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9812 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-06 18:10:02,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:10:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9812 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-06 18:10:12,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420713859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:10:12,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:10:12,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102, 102] total 203 [2024-11-06 18:10:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018227528] [2024-11-06 18:10:12,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:10:12,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-06 18:10:12,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:10:12,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-06 18:10:12,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2024-11-06 18:10:12,191 INFO L87 Difference]: Start difference. First operand 219 states and 224 transitions. Second operand has 203 states, 203 states have (on average 2.044334975369458) internal successors, (415), 203 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:10:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:10:12,921 INFO L93 Difference]: Finished difference Result 439 states and 549 transitions. [2024-11-06 18:10:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-11-06 18:10:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.044334975369458) internal successors, (415), 203 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-11-06 18:10:12,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:10:12,924 INFO L225 Difference]: With dead ends: 439 [2024-11-06 18:10:12,924 INFO L226 Difference]: Without dead ends: 421 [2024-11-06 18:10:12,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2024-11-06 18:10:12,929 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:10:12,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:10:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-06 18:10:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2024-11-06 18:10:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.0142857142857142) internal successors, (426), 420 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:10:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 426 transitions. [2024-11-06 18:10:12,960 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 426 transitions. Word has length 218 [2024-11-06 18:10:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:10:12,961 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 426 transitions. [2024-11-06 18:10:12,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.044334975369458) internal successors, (415), 203 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:10:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 426 transitions. [2024-11-06 18:10:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-06 18:10:12,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:10:12,967 INFO L215 NwaCegarLoop]: trace histogram [200, 200, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:10:12,988 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 18:10:13,167 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 18:10:13,168 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:10:13,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:10:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash -182925468, now seen corresponding path program 5 times [2024-11-06 18:10:13,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:10:13,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953747037] [2024-11-06 18:10:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:10:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:10:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:10:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 40011 backedges. 0 proven. 40000 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-06 18:10:32,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:10:32,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953747037] [2024-11-06 18:10:32,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953747037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:10:32,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352549314] [2024-11-06 18:10:32,937 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:10:32,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:10:32,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:10:32,939 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 18:10:32,941 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