./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_var_plus_ind3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/array-cav19/array_init_var_plus_ind3.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'd03532f6674c1e8789842ed1d67090f7bce36756d61994a67b8c2e5e0b23351f'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-cav19/array_init_var_plus_ind3.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d03532f6674c1e8789842ed1d67090f7bce36756d61994a67b8c2e5e0b23351f --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:38:07,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:38:07,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:38:07,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:38:07,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:38:07,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:38:07,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:38:07,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:38:07,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:38:07,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:38:07,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:38:07,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:38:07,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:38:07,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:38:07,230 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:38:07,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:38:07,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:38:07,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:38:07,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:38:07,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:38:07,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:38:07,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:38:07,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:38:07,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:38:07,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:38:07,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:38:07,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:38:07,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:38:07,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:38:07,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:38:07,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:38:07,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:38:07,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:38:07,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:38:07,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:38:07,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:38:07,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:38:07,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:38:07,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:38:07,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:38:07,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:38:07,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:38:07,234 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 -> d03532f6674c1e8789842ed1d67090f7bce36756d61994a67b8c2e5e0b23351f [2024-11-06 18:38:07,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:38:07,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:38:07,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:38:07,538 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:38:07,539 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:38:07,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_var_plus_ind3.c [2024-11-06 18:38:08,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:38:09,133 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:38:09,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind3.c [2024-11-06 18:38:09,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e2ff1f7a3/269e575fd8dc436d9b9bc2d82486b177/FLAG99f24a11b [2024-11-06 18:38:09,494 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e2ff1f7a3/269e575fd8dc436d9b9bc2d82486b177 [2024-11-06 18:38:09,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:38:09,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:38:09,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:38:09,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:38:09,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:38:09,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c46c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09, skipping insertion in model container [2024-11-06 18:38:09,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,517 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:38:09,641 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind3.c[415,428] [2024-11-06 18:38:09,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:38:09,669 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:38:09,678 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind3.c[415,428] [2024-11-06 18:38:09,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:38:09,695 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:38:09,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09 WrapperNode [2024-11-06 18:38:09,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:38:09,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:38:09,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:38:09,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:38:09,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,722 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2024-11-06 18:38:09,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:38:09,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:38:09,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:38:09,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:38:09,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,740 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 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 18:38:09,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,741 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:38:09,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:38:09,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:38:09,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:38:09,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (1/1) ... [2024-11-06 18:38:09,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:38:09,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:09,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 18:38:09,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 18:38:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:38:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:38:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 18:38:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 18:38:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 18:38:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 18:38:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:38:09,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:38:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 18:38:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 18:38:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 18:38:09,880 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:38:09,881 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:38:09,979 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-06 18:38:09,979 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:38:09,987 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:38:09,987 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 18:38:09,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:38:09 BoogieIcfgContainer [2024-11-06 18:38:09,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:38:09,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:38:09,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:38:09,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:38:09,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:38:09" (1/3) ... [2024-11-06 18:38:09,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d73ab83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:38:09, skipping insertion in model container [2024-11-06 18:38:09,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:09" (2/3) ... [2024-11-06 18:38:09,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d73ab83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:38:09, skipping insertion in model container [2024-11-06 18:38:09,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:38:09" (3/3) ... [2024-11-06 18:38:09,998 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind3.c [2024-11-06 18:38:10,012 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:38:10,013 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:38:10,065 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:38:10,075 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;@5da5196e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:38:10,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:38:10,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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 18:38:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-06 18:38:10,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:10,089 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:10,089 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:10,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:10,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1818270042, now seen corresponding path program 1 times [2024-11-06 18:38:10,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:10,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850221777] [2024-11-06 18:38:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:10,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:10,231 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 18:38:10,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:10,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850221777] [2024-11-06 18:38:10,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850221777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:38:10,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:38:10,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:38:10,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662810300] [2024-11-06 18:38:10,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:38:10,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 18:38:10,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:10,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 18:38:10,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 18:38:10,259 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 18:38:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:10,269 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2024-11-06 18:38:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 18:38:10,270 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-11-06 18:38:10,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:10,275 INFO L225 Difference]: With dead ends: 27 [2024-11-06 18:38:10,276 INFO L226 Difference]: Without dead ends: 12 [2024-11-06 18:38:10,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 18:38:10,283 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:10,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:38:10,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-06 18:38:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-06 18:38:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 18:38:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-06 18:38:10,305 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2024-11-06 18:38:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:10,305 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-06 18:38:10,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 18:38:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-06 18:38:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-06 18:38:10,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:10,306 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:10,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:38:10,307 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:10,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1808111311, now seen corresponding path program 1 times [2024-11-06 18:38:10,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:10,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574634788] [2024-11-06 18:38:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:10,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:10,441 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 18:38:10,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:10,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574634788] [2024-11-06 18:38:10,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574634788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:38:10,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:38:10,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:38:10,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484006073] [2024-11-06 18:38:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:38:10,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:38:10,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:38:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:38:10,445 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 18:38:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:10,474 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-11-06 18:38:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:38:10,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-11-06 18:38:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:10,475 INFO L225 Difference]: With dead ends: 29 [2024-11-06 18:38:10,475 INFO L226 Difference]: Without dead ends: 22 [2024-11-06 18:38:10,476 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 18:38:10,476 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:10,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 15 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:38:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-06 18:38:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 13. [2024-11-06 18:38:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 18:38:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-06 18:38:10,490 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2024-11-06 18:38:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:10,490 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-06 18:38:10,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 18:38:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-06 18:38:10,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-06 18:38:10,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:10,491 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:10,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:38:10,494 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:10,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash 266504688, now seen corresponding path program 1 times [2024-11-06 18:38:10,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:10,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983805820] [2024-11-06 18:38:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:10,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:10,570 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 18:38:10,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:10,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983805820] [2024-11-06 18:38:10,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983805820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:38:10,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:38:10,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:38:10,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87967888] [2024-11-06 18:38:10,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:38:10,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:38:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:10,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:38:10,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:38:10,572 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 18:38:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:10,595 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-11-06 18:38:10,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:38:10,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 18:38:10,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:10,597 INFO L225 Difference]: With dead ends: 23 [2024-11-06 18:38:10,598 INFO L226 Difference]: Without dead ends: 15 [2024-11-06 18:38:10,598 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 18:38:10,599 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:10,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:38:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-06 18:38:10,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-11-06 18:38:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:38:10,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-06 18:38:10,605 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2024-11-06 18:38:10,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:10,605 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-06 18:38:10,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 18:38:10,606 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-06 18:38:10,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-06 18:38:10,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:10,606 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:10,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 18:38:10,606 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:10,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash 53732745, now seen corresponding path program 1 times [2024-11-06 18:38:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:10,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909719465] [2024-11-06 18:38:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:10,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:10,731 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 18:38:10,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:10,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909719465] [2024-11-06 18:38:10,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909719465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:10,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850207329] [2024-11-06 18:38:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:10,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:10,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:10,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:10,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 18:38:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:10,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:38:10,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:10,895 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 18:38:10,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:10,952 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 18:38:10,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850207329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:10,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:10,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-06 18:38:10,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640868191] [2024-11-06 18:38:10,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:10,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:38:10,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:10,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:38:10,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:38:10,956 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 18:38:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:11,064 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2024-11-06 18:38:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:38:11,064 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) Word has length 10 [2024-11-06 18:38:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:11,065 INFO L225 Difference]: With dead ends: 45 [2024-11-06 18:38:11,065 INFO L226 Difference]: Without dead ends: 36 [2024-11-06 18:38:11,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-11-06 18:38:11,066 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 98 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:11,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 57 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:11,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-06 18:38:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2024-11-06 18:38:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 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 18:38:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-06 18:38:11,072 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2024-11-06 18:38:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:11,073 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-06 18:38:11,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 18:38:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-06 18:38:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-06 18:38:11,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:11,075 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:11,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 18:38:11,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:11,280 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:11,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash -334334928, now seen corresponding path program 1 times [2024-11-06 18:38:11,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:11,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480982309] [2024-11-06 18:38:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:11,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:11,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480982309] [2024-11-06 18:38:11,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480982309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:11,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638546995] [2024-11-06 18:38:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:11,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:11,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:11,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:11,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 18:38:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:11,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 18:38:11,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:11,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:11,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638546995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:11,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:11,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-06 18:38:11,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882635069] [2024-11-06 18:38:11,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:11,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:38:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:38:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:38:11,585 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 18:38:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:11,680 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-06 18:38:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 18:38:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 14 [2024-11-06 18:38:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:11,682 INFO L225 Difference]: With dead ends: 39 [2024-11-06 18:38:11,682 INFO L226 Difference]: Without dead ends: 27 [2024-11-06 18:38:11,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-06 18:38:11,683 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:11,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 42 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:38:11,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-06 18:38:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-06 18:38:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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 18:38:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-06 18:38:11,687 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2024-11-06 18:38:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:11,687 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-06 18:38:11,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 18:38:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-06 18:38:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-06 18:38:11,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:11,688 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:11,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 18:38:11,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:11,893 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:11,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1859381769, now seen corresponding path program 2 times [2024-11-06 18:38:11,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:11,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996799641] [2024-11-06 18:38:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:12,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:12,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996799641] [2024-11-06 18:38:12,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996799641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:12,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521899962] [2024-11-06 18:38:12,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:38:12,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:12,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:12,089 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:12,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 18:38:12,148 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:38:12,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:12,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-06 18:38:12,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:12,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:12,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521899962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:12,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:12,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-06 18:38:12,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686226952] [2024-11-06 18:38:12,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:12,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 18:38:12,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:12,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 18:38:12,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=263, Unknown=0, NotChecked=0, Total=462 [2024-11-06 18:38:12,403 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 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 18:38:12,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:12,604 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2024-11-06 18:38:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 18:38:12,605 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 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 22 [2024-11-06 18:38:12,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:12,606 INFO L225 Difference]: With dead ends: 102 [2024-11-06 18:38:12,606 INFO L226 Difference]: Without dead ends: 95 [2024-11-06 18:38:12,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=301, Invalid=455, Unknown=0, NotChecked=0, Total=756 [2024-11-06 18:38:12,607 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 282 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:12,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 77 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:12,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-06 18:38:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 46. [2024-11-06 18:38:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:38:12,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-11-06 18:38:12,614 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 22 [2024-11-06 18:38:12,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:12,615 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-11-06 18:38:12,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 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 18:38:12,615 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-11-06 18:38:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-06 18:38:12,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:12,615 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:12,633 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 18:38:12,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:12,820 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:12,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1855888886, now seen corresponding path program 2 times [2024-11-06 18:38:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:12,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370338818] [2024-11-06 18:38:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:12,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:13,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:13,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370338818] [2024-11-06 18:38:13,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370338818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:13,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783213838] [2024-11-06 18:38:13,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:38:13,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:13,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:13,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:13,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 18:38:13,350 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:38:13,351 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:13,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-06 18:38:13,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:13,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:38:13,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-06 18:38:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:13,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:13,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-06 18:38:13,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-06 18:38:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:14,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783213838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:14,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:14,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 35 [2024-11-06 18:38:14,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950305416] [2024-11-06 18:38:14,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:14,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-06 18:38:14,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:14,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-06 18:38:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2024-11-06 18:38:14,135 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 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 18:38:14,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:14,392 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-06 18:38:14,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 18:38:14,393 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 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) Word has length 23 [2024-11-06 18:38:14,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:14,395 INFO L225 Difference]: With dead ends: 59 [2024-11-06 18:38:14,396 INFO L226 Difference]: Without dead ends: 57 [2024-11-06 18:38:14,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 18:38:14,397 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:14,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 146 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:38:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-06 18:38:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2024-11-06 18:38:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 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 18:38:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-11-06 18:38:14,408 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 23 [2024-11-06 18:38:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:14,408 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-11-06 18:38:14,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 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 18:38:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-11-06 18:38:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-06 18:38:14,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:14,410 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:14,430 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 18:38:14,611 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,SelfDestructingSolverStorable6 [2024-11-06 18:38:14,612 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:14,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash -954451792, now seen corresponding path program 3 times [2024-11-06 18:38:14,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734901206] [2024-11-06 18:38:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:15,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:15,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734901206] [2024-11-06 18:38:15,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734901206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:15,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519597957] [2024-11-06 18:38:15,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:38:15,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:15,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:15,088 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:15,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 18:38:15,164 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-06 18:38:15,164 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:15,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-06 18:38:15,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:15,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:38:15,305 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-06 18:38:15,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-06 18:38:15,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-06 18:38:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:15,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:15,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-06 18:38:15,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-06 18:38:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:15,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519597957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:15,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:15,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-06 18:38:15,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740539955] [2024-11-06 18:38:15,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:15,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-06 18:38:15,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:15,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-06 18:38:15,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2024-11-06 18:38:15,842 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 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 18:38:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:16,126 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-06 18:38:16,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 18:38:16,127 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 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 26 [2024-11-06 18:38:16,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:16,128 INFO L225 Difference]: With dead ends: 55 [2024-11-06 18:38:16,128 INFO L226 Difference]: Without dead ends: 53 [2024-11-06 18:38:16,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2024-11-06 18:38:16,129 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:16,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 94 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:38:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-06 18:38:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2024-11-06 18:38:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 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 18:38:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-11-06 18:38:16,139 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 26 [2024-11-06 18:38:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:16,141 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-11-06 18:38:16,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 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 18:38:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-11-06 18:38:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-06 18:38:16,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:16,141 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:16,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 18:38:16,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:16,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:16,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:16,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1435207764, now seen corresponding path program 1 times [2024-11-06 18:38:16,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:16,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057725870] [2024-11-06 18:38:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:16,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:16,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057725870] [2024-11-06 18:38:16,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057725870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:16,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107019210] [2024-11-06 18:38:16,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:16,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:16,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:16,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:16,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 18:38:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:16,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 18:38:16,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:16,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:16,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107019210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:16,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:16,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-11-06 18:38:16,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657395992] [2024-11-06 18:38:16,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:16,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 18:38:16,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:16,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 18:38:16,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-06 18:38:16,656 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:38:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:16,724 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-11-06 18:38:16,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 18:38:16,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-06 18:38:16,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:16,725 INFO L225 Difference]: With dead ends: 60 [2024-11-06 18:38:16,725 INFO L226 Difference]: Without dead ends: 48 [2024-11-06 18:38:16,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-06 18:38:16,728 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:16,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:16,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-06 18:38:16,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-06 18:38:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 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 18:38:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-11-06 18:38:16,736 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 27 [2024-11-06 18:38:16,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:16,737 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-11-06 18:38:16,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:38:16,738 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-11-06 18:38:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-06 18:38:16,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:16,739 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:16,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 18:38:16,939 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,SelfDestructingSolverStorable8 [2024-11-06 18:38:16,940 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:16,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:16,940 INFO L85 PathProgramCache]: Analyzing trace with hash 13772134, now seen corresponding path program 2 times [2024-11-06 18:38:16,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:16,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298369867] [2024-11-06 18:38:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:16,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:17,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298369867] [2024-11-06 18:38:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298369867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023198092] [2024-11-06 18:38:17,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:38:17,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:17,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:17,429 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:17,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 18:38:17,492 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:38:17,493 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:17,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-06 18:38:17,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:17,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:38:17,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-06 18:38:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:17,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:18,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-06 18:38:18,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-06 18:38:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:18,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023198092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:18,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:18,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2024-11-06 18:38:18,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126308512] [2024-11-06 18:38:18,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:18,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-06 18:38:18,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:18,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-06 18:38:18,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1724, Unknown=0, NotChecked=0, Total=1892 [2024-11-06 18:38:18,423 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 44 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 44 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:38:19,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:19,022 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2024-11-06 18:38:19,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-06 18:38:19,023 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 44 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-06 18:38:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:19,024 INFO L225 Difference]: With dead ends: 63 [2024-11-06 18:38:19,025 INFO L226 Difference]: Without dead ends: 48 [2024-11-06 18:38:19,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=251, Invalid=2401, Unknown=0, NotChecked=0, Total=2652 [2024-11-06 18:38:19,027 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:19,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 191 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:38:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-06 18:38:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-06 18:38:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:38:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-06 18:38:19,037 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 30 [2024-11-06 18:38:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:19,037 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-06 18:38:19,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 44 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:38:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-06 18:38:19,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-06 18:38:19,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:19,038 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:19,055 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 18:38:19,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:19,243 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:19,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:19,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2142378644, now seen corresponding path program 3 times [2024-11-06 18:38:19,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:19,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093441964] [2024-11-06 18:38:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:19,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:19,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093441964] [2024-11-06 18:38:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093441964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245999330] [2024-11-06 18:38:19,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:38:19,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:19,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:19,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:19,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 18:38:19,788 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-06 18:38:19,789 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:19,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-06 18:38:19,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:19,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:38:19,925 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-06 18:38:19,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-06 18:38:20,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-06 18:38:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:20,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:21,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-06 18:38:21,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-06 18:38:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:21,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245999330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:21,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:21,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2024-11-06 18:38:21,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989364221] [2024-11-06 18:38:21,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:21,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-06 18:38:21,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:21,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-06 18:38:21,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1278, Unknown=2, NotChecked=0, Total=1406 [2024-11-06 18:38:21,420 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:38:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:21,726 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2024-11-06 18:38:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 18:38:21,727 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-06 18:38:21,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:21,727 INFO L225 Difference]: With dead ends: 56 [2024-11-06 18:38:21,727 INFO L226 Difference]: Without dead ends: 54 [2024-11-06 18:38:21,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=170, Invalid=1550, Unknown=2, NotChecked=0, Total=1722 [2024-11-06 18:38:21,728 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 65 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:21,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 163 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:38:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-06 18:38:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2024-11-06 18:38:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 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 18:38:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2024-11-06 18:38:21,734 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 33 [2024-11-06 18:38:21,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:21,734 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2024-11-06 18:38:21,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:38:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2024-11-06 18:38:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-06 18:38:21,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:21,736 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:21,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 18:38:21,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:21,936 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:21,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:21,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1000805410, now seen corresponding path program 4 times [2024-11-06 18:38:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:21,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558693058] [2024-11-06 18:38:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:22,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:22,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558693058] [2024-11-06 18:38:22,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558693058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:22,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509608134] [2024-11-06 18:38:22,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:38:22,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:22,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:22,460 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:22,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 18:38:22,563 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:38:22,563 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:22,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-06 18:38:22,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:22,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-06 18:38:23,144 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-06 18:38:23,144 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 25 treesize of output 12 [2024-11-06 18:38:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:23,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:23,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-06 18:38:23,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-06 18:38:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:23,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509608134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:23,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 53 [2024-11-06 18:38:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825310761] [2024-11-06 18:38:23,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:23,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-06 18:38:23,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-06 18:38:23,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=2257, Unknown=0, NotChecked=0, Total=2756 [2024-11-06 18:38:23,917 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 53 states, 53 states have (on average 1.9622641509433962) internal successors, (104), 53 states have internal predecessors, (104), 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 18:38:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:24,189 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2024-11-06 18:38:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-06 18:38:24,190 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.9622641509433962) internal successors, (104), 53 states have internal predecessors, (104), 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 37 [2024-11-06 18:38:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:24,190 INFO L225 Difference]: With dead ends: 67 [2024-11-06 18:38:24,190 INFO L226 Difference]: Without dead ends: 52 [2024-11-06 18:38:24,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=523, Invalid=2447, Unknown=0, NotChecked=0, Total=2970 [2024-11-06 18:38:24,191 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:24,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:38:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-06 18:38:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-06 18:38:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 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 18:38:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2024-11-06 18:38:24,197 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 37 [2024-11-06 18:38:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:24,197 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2024-11-06 18:38:24,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.9622641509433962) internal successors, (104), 53 states have internal predecessors, (104), 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 18:38:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2024-11-06 18:38:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-06 18:38:24,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:24,198 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:24,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 18:38:24,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:24,403 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:24,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:24,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1128636068, now seen corresponding path program 5 times [2024-11-06 18:38:24,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:24,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285724586] [2024-11-06 18:38:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:24,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:24,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:24,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285724586] [2024-11-06 18:38:24,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285724586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:24,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201959473] [2024-11-06 18:38:24,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:38:24,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:24,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:24,899 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:24,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 18:38:25,003 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-06 18:38:25,003 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:25,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-06 18:38:25,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:25,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:38:25,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:25,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-06 18:38:25,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-06 18:38:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:25,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:26,036 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_113| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_113| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_271 Int)) (< (select (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_113| 4)) v_ArrVal_271) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 24)) 1)))) is different from false [2024-11-06 18:38:26,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-06 18:38:26,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2024-11-06 18:38:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-06 18:38:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201959473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:26,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:26,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 58 [2024-11-06 18:38:26,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714302805] [2024-11-06 18:38:26,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:26,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-06 18:38:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-06 18:38:26,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2970, Unknown=1, NotChecked=110, Total=3306 [2024-11-06 18:38:26,482 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 58 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 58 states have internal predecessors, (115), 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 18:38:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:26,944 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-11-06 18:38:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 18:38:26,945 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 58 states have internal predecessors, (115), 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 40 [2024-11-06 18:38:26,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:26,945 INFO L225 Difference]: With dead ends: 60 [2024-11-06 18:38:26,945 INFO L226 Difference]: Without dead ends: 58 [2024-11-06 18:38:26,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=287, Invalid=3622, Unknown=1, NotChecked=122, Total=4032 [2024-11-06 18:38:26,947 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:26,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 257 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 838 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2024-11-06 18:38:26,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-06 18:38:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-06 18:38:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 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 18:38:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2024-11-06 18:38:26,953 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 40 [2024-11-06 18:38:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:26,953 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2024-11-06 18:38:26,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 58 states have internal predecessors, (115), 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 18:38:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2024-11-06 18:38:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-06 18:38:26,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:26,954 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:26,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 18:38:27,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-06 18:38:27,154 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:27,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 882120722, now seen corresponding path program 6 times [2024-11-06 18:38:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:27,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207408156] [2024-11-06 18:38:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:27,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:27,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207408156] [2024-11-06 18:38:27,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207408156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:27,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254692325] [2024-11-06 18:38:27,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:38:27,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:27,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:27,789 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:27,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 18:38:27,894 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-06 18:38:27,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:27,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-06 18:38:27,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:28,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-06 18:38:28,677 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-06 18:38:28,678 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 25 treesize of output 12 [2024-11-06 18:38:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 15 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:28,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:29,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-06 18:38:29,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-06 18:38:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:29,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254692325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:29,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:29,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 62 [2024-11-06 18:38:29,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798875595] [2024-11-06 18:38:29,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:29,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-06 18:38:29,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:29,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-06 18:38:29,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=3141, Unknown=0, NotChecked=0, Total=3782 [2024-11-06 18:38:29,605 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 62 states, 62 states have (on average 2.0161290322580645) internal successors, (125), 62 states have internal predecessors, (125), 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 18:38:30,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:30,026 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2024-11-06 18:38:30,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-06 18:38:30,027 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.0161290322580645) internal successors, (125), 62 states have internal predecessors, (125), 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 44 [2024-11-06 18:38:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:30,027 INFO L225 Difference]: With dead ends: 75 [2024-11-06 18:38:30,028 INFO L226 Difference]: Without dead ends: 56 [2024-11-06 18:38:30,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=668, Invalid=3364, Unknown=0, NotChecked=0, Total=4032 [2024-11-06 18:38:30,029 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:30,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 198 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:38:30,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-06 18:38:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-06 18:38:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 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 18:38:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2024-11-06 18:38:30,036 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 44 [2024-11-06 18:38:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:30,036 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2024-11-06 18:38:30,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.0161290322580645) internal successors, (125), 62 states have internal predecessors, (125), 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 18:38:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2024-11-06 18:38:30,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-06 18:38:30,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:30,037 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:30,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-06 18:38:30,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-06 18:38:30,241 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:30,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash 732190104, now seen corresponding path program 7 times [2024-11-06 18:38:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:30,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341811191] [2024-11-06 18:38:30,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:30,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:30,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:30,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341811191] [2024-11-06 18:38:30,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341811191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:30,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795145359] [2024-11-06 18:38:30,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 18:38:30,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:30,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:30,822 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:30,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 18:38:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:30,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-06 18:38:30,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:31,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:38:31,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:31,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-06 18:38:31,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-06 18:38:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:31,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:33,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-06 18:38:33,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-06 18:38:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795145359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:33,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:33,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 67 [2024-11-06 18:38:33,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153613410] [2024-11-06 18:38:33,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:33,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-06 18:38:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-06 18:38:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=4152, Unknown=3, NotChecked=0, Total=4422 [2024-11-06 18:38:33,526 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 67 states have internal predecessors, (136), 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 18:38:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:34,239 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2024-11-06 18:38:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-06 18:38:34,240 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 67 states have internal predecessors, (136), 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 47 [2024-11-06 18:38:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:34,241 INFO L225 Difference]: With dead ends: 64 [2024-11-06 18:38:34,241 INFO L226 Difference]: Without dead ends: 62 [2024-11-06 18:38:34,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=346, Invalid=5053, Unknown=3, NotChecked=0, Total=5402 [2024-11-06 18:38:34,243 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 131 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:34,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 390 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:38:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-06 18:38:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2024-11-06 18:38:34,261 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 18:38:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2024-11-06 18:38:34,261 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 47 [2024-11-06 18:38:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:34,261 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2024-11-06 18:38:34,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 67 states have internal predecessors, (136), 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 18:38:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2024-11-06 18:38:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-06 18:38:34,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:34,264 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:34,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-06 18:38:34,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:34,469 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:34,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2024902222, now seen corresponding path program 8 times [2024-11-06 18:38:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:34,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029108588] [2024-11-06 18:38:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:34,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 24 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:35,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029108588] [2024-11-06 18:38:35,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029108588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831691357] [2024-11-06 18:38:35,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:38:35,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:35,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:35,131 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:35,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 18:38:35,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:38:35,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:35,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-06 18:38:35,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:35,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:38:35,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-06 18:38:36,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:36,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2024-11-06 18:38:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:36,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:37,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2024-11-06 18:38:37,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2024-11-06 18:38:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 21 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:38,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831691357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:38,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:38,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 28] total 76 [2024-11-06 18:38:38,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95539482] [2024-11-06 18:38:38,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:38,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-06 18:38:38,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-06 18:38:38,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=4798, Unknown=1, NotChecked=0, Total=5700 [2024-11-06 18:38:38,615 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 76 states, 76 states have (on average 1.9473684210526316) internal successors, (148), 76 states have internal predecessors, (148), 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 18:38:44,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:44,026 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2024-11-06 18:38:44,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-06 18:38:44,026 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.9473684210526316) internal successors, (148), 76 states have internal predecessors, (148), 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 51 [2024-11-06 18:38:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:44,027 INFO L225 Difference]: With dead ends: 104 [2024-11-06 18:38:44,027 INFO L226 Difference]: Without dead ends: 60 [2024-11-06 18:38:44,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2504 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1232, Invalid=7322, Unknown=2, NotChecked=0, Total=8556 [2024-11-06 18:38:44,029 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:44,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 237 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:38:44,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-06 18:38:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-06 18:38:44,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 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 18:38:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-06 18:38:44,044 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 51 [2024-11-06 18:38:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:44,044 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-06 18:38:44,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.9473684210526316) internal successors, (148), 76 states have internal predecessors, (148), 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 18:38:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-06 18:38:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-06 18:38:44,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:44,045 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:44,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-06 18:38:44,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:44,245 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:44,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1217248270, now seen corresponding path program 9 times [2024-11-06 18:38:44,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:44,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73102106] [2024-11-06 18:38:44,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:44,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:44,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:44,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73102106] [2024-11-06 18:38:44,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73102106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:44,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791060170] [2024-11-06 18:38:44,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:38:44,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:44,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:44,993 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:44,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 18:38:45,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-06 18:38:45,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:45,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-06 18:38:45,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:45,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:38:45,337 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-06 18:38:45,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-06 18:38:45,371 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-06 18:38:45,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-06 18:38:45,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-06 18:38:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 2 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:45,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:46,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-06 18:38:46,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2024-11-06 18:38:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 18:38:47,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791060170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:47,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:47,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 29] total 63 [2024-11-06 18:38:47,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253799581] [2024-11-06 18:38:47,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:47,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-06 18:38:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:47,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-06 18:38:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=3676, Unknown=1, NotChecked=0, Total=3906 [2024-11-06 18:38:47,433 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 63 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 63 states have internal predecessors, (137), 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 18:38:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:48,134 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2024-11-06 18:38:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-06 18:38:48,134 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 63 states have internal predecessors, (137), 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 18:38:48,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:48,134 INFO L225 Difference]: With dead ends: 68 [2024-11-06 18:38:48,135 INFO L226 Difference]: Without dead ends: 66 [2024-11-06 18:38:48,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=335, Invalid=4634, Unknown=1, NotChecked=0, Total=4970 [2024-11-06 18:38:48,135 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 96 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:48,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 360 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:38:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-06 18:38:48,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2024-11-06 18:38:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 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 18:38:48,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2024-11-06 18:38:48,140 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 57 [2024-11-06 18:38:48,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:48,141 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2024-11-06 18:38:48,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 63 states have internal predecessors, (137), 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 18:38:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2024-11-06 18:38:48,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-06 18:38:48,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:48,141 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:48,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-06 18:38:48,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-06 18:38:48,342 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:48,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1661548092, now seen corresponding path program 10 times [2024-11-06 18:38:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:48,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447095219] [2024-11-06 18:38:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:49,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447095219] [2024-11-06 18:38:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447095219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9387961] [2024-11-06 18:38:49,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:38:49,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:49,140 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:49,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-06 18:38:49,335 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:38:49,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:49,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-06 18:38:49,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:49,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:38:49,462 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-06 18:38:49,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-06 18:38:49,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-06 18:38:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:49,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:50,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-06 18:38:50,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2024-11-06 18:38:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:51,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9387961] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:51,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:51,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 66 [2024-11-06 18:38:51,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535069625] [2024-11-06 18:38:51,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:51,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-06 18:38:51,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:51,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-06 18:38:51,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=4062, Unknown=2, NotChecked=0, Total=4290 [2024-11-06 18:38:51,436 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 66 states, 66 states have (on average 2.257575757575758) internal successors, (149), 66 states have internal predecessors, (149), 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 18:38:52,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:52,209 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2024-11-06 18:38:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-06 18:38:52,210 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.257575757575758) internal successors, (149), 66 states have internal predecessors, (149), 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 61 [2024-11-06 18:38:52,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:52,210 INFO L225 Difference]: With dead ends: 72 [2024-11-06 18:38:52,210 INFO L226 Difference]: Without dead ends: 70 [2024-11-06 18:38:52,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=314, Invalid=5086, Unknown=2, NotChecked=0, Total=5402 [2024-11-06 18:38:52,211 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 118 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:52,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 554 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:38:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-06 18:38:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2024-11-06 18:38:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 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 18:38:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2024-11-06 18:38:52,217 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 61 [2024-11-06 18:38:52,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:52,218 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2024-11-06 18:38:52,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.257575757575758) internal successors, (149), 66 states have internal predecessors, (149), 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 18:38:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2024-11-06 18:38:52,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-06 18:38:52,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:52,218 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:52,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-06 18:38:52,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 18:38:52,419 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:52,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:52,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1444285562, now seen corresponding path program 11 times [2024-11-06 18:38:52,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:52,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144671059] [2024-11-06 18:38:52,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:52,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 60 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:53,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:53,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144671059] [2024-11-06 18:38:53,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144671059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:53,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391037945] [2024-11-06 18:38:53,467 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:38:53,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:53,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:53,470 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:53,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-06 18:38:53,627 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-06 18:38:53,628 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:53,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-06 18:38:53,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:54,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:38:54,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-06 18:38:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:54,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:55,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-06 18:38:55,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-06 18:38:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:56,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391037945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:56,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:56,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 91 [2024-11-06 18:38:56,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544791338] [2024-11-06 18:38:56,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:56,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-06 18:38:56,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-06 18:38:56,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=7817, Unknown=0, NotChecked=0, Total=8190 [2024-11-06 18:38:56,041 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 91 states, 91 states have (on average 2.087912087912088) internal successors, (190), 91 states have internal predecessors, (190), 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 18:38:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:57,564 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2024-11-06 18:38:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-06 18:38:57,564 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.087912087912088) internal successors, (190), 91 states have internal predecessors, (190), 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 65 [2024-11-06 18:38:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:57,565 INFO L225 Difference]: With dead ends: 105 [2024-11-06 18:38:57,565 INFO L226 Difference]: Without dead ends: 70 [2024-11-06 18:38:57,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2518 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=561, Invalid=10569, Unknown=0, NotChecked=0, Total=11130 [2024-11-06 18:38:57,566 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 52 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 2849 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:57,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 882 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2849 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 18:38:57,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-06 18:38:57,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-11-06 18:38:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 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 18:38:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-11-06 18:38:57,571 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 65 [2024-11-06 18:38:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:57,571 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-11-06 18:38:57,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.087912087912088) internal successors, (190), 91 states have internal predecessors, (190), 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 18:38:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-11-06 18:38:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-06 18:38:57,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:57,572 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:57,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-06 18:38:57,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:57,772 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:57,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:57,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2043327379, now seen corresponding path program 1 times [2024-11-06 18:38:57,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:57,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194838150] [2024-11-06 18:38:57,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:57,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-06 18:38:57,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:57,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194838150] [2024-11-06 18:38:57,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194838150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:57,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225933790] [2024-11-06 18:38:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:57,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:57,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:57,991 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:57,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-06 18:38:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:58,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 18:38:58,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-06 18:38:58,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-06 18:38:58,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225933790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:58,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:58,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2024-11-06 18:38:58,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028377804] [2024-11-06 18:38:58,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:58,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-06 18:38:58,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:58,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-06 18:38:58,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2024-11-06 18:38:58,649 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 42 states have internal predecessors, (123), 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 18:38:58,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:58,997 INFO L93 Difference]: Finished difference Result 545 states and 574 transitions. [2024-11-06 18:38:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-06 18:38:58,998 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 42 states have internal predecessors, (123), 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 67 [2024-11-06 18:38:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:58,999 INFO L225 Difference]: With dead ends: 545 [2024-11-06 18:38:58,999 INFO L226 Difference]: Without dead ends: 516 [2024-11-06 18:38:59,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2024-11-06 18:38:59,000 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 586 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:59,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 154 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-06 18:38:59,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 110. [2024-11-06 18:38:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.146788990825688) internal successors, (125), 109 states have internal predecessors, (125), 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 18:38:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2024-11-06 18:38:59,013 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 67 [2024-11-06 18:38:59,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:59,013 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2024-11-06 18:38:59,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 42 states have internal predecessors, (123), 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 18:38:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2024-11-06 18:38:59,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-06 18:38:59,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:59,014 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:59,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-06 18:38:59,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:59,215 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:59,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:59,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1333944652, now seen corresponding path program 12 times [2024-11-06 18:38:59,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:59,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887978011] [2024-11-06 18:38:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:59,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:38:59,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887978011] [2024-11-06 18:38:59,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887978011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075533026] [2024-11-06 18:38:59,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:38:59,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:59,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:59,963 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:59,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-06 18:39:00,236 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-06 18:39:00,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:39:00,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-06 18:39:00,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:00,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:39:00,366 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-06 18:39:00,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-06 18:39:00,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-06 18:39:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:00,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:01,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-06 18:39:01,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2024-11-06 18:39:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:02,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075533026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:02,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:02,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 34] total 75 [2024-11-06 18:39:02,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931904420] [2024-11-06 18:39:02,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:02,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-06 18:39:02,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:02,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-06 18:39:02,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=5285, Unknown=1, NotChecked=0, Total=5550 [2024-11-06 18:39:02,321 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 75 states, 75 states have (on average 2.2266666666666666) internal successors, (167), 75 states have internal predecessors, (167), 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 18:39:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:03,271 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2024-11-06 18:39:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-06 18:39:03,272 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.2266666666666666) internal successors, (167), 75 states have internal predecessors, (167), 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 68 [2024-11-06 18:39:03,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:03,272 INFO L225 Difference]: With dead ends: 118 [2024-11-06 18:39:03,272 INFO L226 Difference]: Without dead ends: 116 [2024-11-06 18:39:03,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1747 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=378, Invalid=6761, Unknown=1, NotChecked=0, Total=7140 [2024-11-06 18:39:03,273 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 117 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:03,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 566 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:39:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-06 18:39:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2024-11-06 18:39:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1415929203539823) internal successors, (129), 113 states have internal predecessors, (129), 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 18:39:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2024-11-06 18:39:03,289 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 68 [2024-11-06 18:39:03,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:03,289 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2024-11-06 18:39:03,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.2266666666666666) internal successors, (167), 75 states have internal predecessors, (167), 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 18:39:03,289 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2024-11-06 18:39:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-06 18:39:03,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:03,290 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:03,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-06 18:39:03,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:03,491 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:03,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -280434326, now seen corresponding path program 13 times [2024-11-06 18:39:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:03,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972436169] [2024-11-06 18:39:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 84 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:04,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:04,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972436169] [2024-11-06 18:39:04,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972436169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:04,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685564681] [2024-11-06 18:39:04,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 18:39:04,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:04,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:04,544 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:39:04,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-06 18:39:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:04,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-06 18:39:04,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:05,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:39:05,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-06 18:39:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:05,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:06,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-06 18:39:06,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-06 18:39:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:07,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685564681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:07,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:07,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 98 [2024-11-06 18:39:07,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659456706] [2024-11-06 18:39:07,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:07,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-06 18:39:07,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-06 18:39:07,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=9102, Unknown=0, NotChecked=0, Total=9506 [2024-11-06 18:39:07,439 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 98 states, 98 states have (on average 2.1530612244897958) internal successors, (211), 98 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 18:39:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:09,191 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2024-11-06 18:39:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-06 18:39:09,191 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.1530612244897958) internal successors, (211), 98 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 72 [2024-11-06 18:39:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:09,192 INFO L225 Difference]: With dead ends: 153 [2024-11-06 18:39:09,192 INFO L226 Difference]: Without dead ends: 114 [2024-11-06 18:39:09,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2868 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=598, Invalid=12058, Unknown=0, NotChecked=0, Total=12656 [2024-11-06 18:39:09,194 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 64 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 3402 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:09,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1140 Invalid, 3407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3402 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-06 18:39:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-06 18:39:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-06 18:39:09,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1327433628318584) internal successors, (128), 113 states have internal predecessors, (128), 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 18:39:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2024-11-06 18:39:09,210 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 72 [2024-11-06 18:39:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:09,211 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2024-11-06 18:39:09,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.1530612244897958) internal successors, (211), 98 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 18:39:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2024-11-06 18:39:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-06 18:39:09,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:09,212 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:09,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-06 18:39:09,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:09,412 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:09,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:09,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1469923824, now seen corresponding path program 14 times [2024-11-06 18:39:09,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:09,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756639319] [2024-11-06 18:39:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:09,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:10,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:10,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756639319] [2024-11-06 18:39:10,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756639319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:10,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609653523] [2024-11-06 18:39:10,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:39:10,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:10,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:10,299 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:39:10,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-06 18:39:10,403 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:39:10,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:39:10,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-06 18:39:10,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:11,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:39:11,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-06 18:39:11,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-06 18:39:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:11,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:13,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-06 18:39:13,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2024-11-06 18:39:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:14,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609653523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:14,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:14,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 103 [2024-11-06 18:39:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153925876] [2024-11-06 18:39:14,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:14,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-06 18:39:14,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:14,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-06 18:39:14,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=10085, Unknown=2, NotChecked=0, Total=10506 [2024-11-06 18:39:14,281 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand has 103 states, 103 states have (on average 2.1359223300970873) internal successors, (220), 103 states have internal predecessors, (220), 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 18:39:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:15,388 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2024-11-06 18:39:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-06 18:39:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.1359223300970873) internal successors, (220), 103 states have internal predecessors, (220), 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 75 [2024-11-06 18:39:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:15,389 INFO L225 Difference]: With dead ends: 122 [2024-11-06 18:39:15,390 INFO L226 Difference]: Without dead ends: 120 [2024-11-06 18:39:15,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3772 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=546, Invalid=12334, Unknown=2, NotChecked=0, Total=12882 [2024-11-06 18:39:15,391 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 91 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:15,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 731 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:39:15,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-06 18:39:15,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2024-11-06 18:39:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.1282051282051282) internal successors, (132), 117 states have internal predecessors, (132), 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 18:39:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 132 transitions. [2024-11-06 18:39:15,401 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 132 transitions. Word has length 75 [2024-11-06 18:39:15,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:15,402 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 132 transitions. [2024-11-06 18:39:15,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.1359223300970873) internal successors, (220), 103 states have internal predecessors, (220), 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 18:39:15,402 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 132 transitions. [2024-11-06 18:39:15,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-06 18:39:15,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:15,402 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:15,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-06 18:39:15,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:15,603 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:15,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:15,603 INFO L85 PathProgramCache]: Analyzing trace with hash -349401434, now seen corresponding path program 15 times [2024-11-06 18:39:15,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:15,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906270425] [2024-11-06 18:39:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:15,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:16,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:16,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906270425] [2024-11-06 18:39:16,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906270425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:16,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190621986] [2024-11-06 18:39:16,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:39:16,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:16,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:16,716 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:39:16,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-06 18:39:17,160 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-06 18:39:17,160 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:39:17,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-06 18:39:17,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:17,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-06 18:39:18,538 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-06 18:39:18,538 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 25 treesize of output 12 [2024-11-06 18:39:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 120 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:18,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:19,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-06 18:39:19,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-06 18:39:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 112 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:20,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190621986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:20,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:20,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 109 [2024-11-06 18:39:20,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357569338] [2024-11-06 18:39:20,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:20,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-06 18:39:20,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:20,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-06 18:39:20,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1461, Invalid=10311, Unknown=0, NotChecked=0, Total=11772 [2024-11-06 18:39:20,705 INFO L87 Difference]: Start difference. First operand 118 states and 132 transitions. Second operand has 109 states, 109 states have (on average 2.128440366972477) internal successors, (232), 109 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 18:39:21,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:21,846 INFO L93 Difference]: Finished difference Result 158 states and 172 transitions. [2024-11-06 18:39:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-06 18:39:21,847 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.128440366972477) internal successors, (232), 109 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 79 [2024-11-06 18:39:21,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:21,847 INFO L225 Difference]: With dead ends: 158 [2024-11-06 18:39:21,848 INFO L226 Difference]: Without dead ends: 118 [2024-11-06 18:39:21,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5835 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1686, Invalid=13076, Unknown=0, NotChecked=0, Total=14762 [2024-11-06 18:39:21,849 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:21,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 384 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:39:21,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-06 18:39:21,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-06 18:39:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 117 states have internal predecessors, (131), 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 18:39:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2024-11-06 18:39:21,867 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 79 [2024-11-06 18:39:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:21,867 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2024-11-06 18:39:21,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.128440366972477) internal successors, (232), 109 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 18:39:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2024-11-06 18:39:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-06 18:39:21,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:21,868 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:21,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-06 18:39:22,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-06 18:39:22,069 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:22,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash 60994400, now seen corresponding path program 16 times [2024-11-06 18:39:22,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:22,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173769025] [2024-11-06 18:39:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:22,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173769025] [2024-11-06 18:39:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173769025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299395865] [2024-11-06 18:39:23,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:39:23,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:23,204 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:39:23,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-06 18:39:23,385 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:39:23,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:39:23,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-06 18:39:23,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:24,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:39:24,114 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-06 18:39:24,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-06 18:39:24,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-06 18:39:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:24,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:25,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-06 18:39:25,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-06 18:39:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:26,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299395865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:26,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:26,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 112 [2024-11-06 18:39:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939203975] [2024-11-06 18:39:26,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:26,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-11-06 18:39:26,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-11-06 18:39:26,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=11961, Unknown=0, NotChecked=0, Total=12432 [2024-11-06 18:39:26,163 INFO L87 Difference]: Start difference. First operand 118 states and 131 transitions. Second operand has 112 states, 112 states have (on average 2.1517857142857144) internal successors, (241), 112 states have internal predecessors, (241), 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 18:39:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:27,575 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2024-11-06 18:39:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-06 18:39:27,576 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.1517857142857144) internal successors, (241), 112 states have internal predecessors, (241), 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 82 [2024-11-06 18:39:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:27,577 INFO L225 Difference]: With dead ends: 126 [2024-11-06 18:39:27,577 INFO L226 Difference]: Without dead ends: 124 [2024-11-06 18:39:27,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5732 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=624, Invalid=14628, Unknown=0, NotChecked=0, Total=15252 [2024-11-06 18:39:27,578 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 212 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:27,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 956 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 18:39:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-06 18:39:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2024-11-06 18:39:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.115702479338843) internal successors, (135), 121 states have internal predecessors, (135), 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 18:39:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2024-11-06 18:39:27,596 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 82 [2024-11-06 18:39:27,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:27,596 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2024-11-06 18:39:27,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.1517857142857144) internal successors, (241), 112 states have internal predecessors, (241), 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 18:39:27,596 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2024-11-06 18:39:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-06 18:39:27,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:27,597 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:27,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-06 18:39:27,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-06 18:39:27,797 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:27,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:27,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1262209046, now seen corresponding path program 17 times [2024-11-06 18:39:27,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:27,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420445567] [2024-11-06 18:39:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 463 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:28,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420445567] [2024-11-06 18:39:28,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420445567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93543936] [2024-11-06 18:39:28,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:39:28,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:28,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:28,855 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:39:28,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-06 18:39:29,100 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-06 18:39:29,100 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:39:29,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-06 18:39:29,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:30,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:39:30,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-06 18:39:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 463 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:30,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:31,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-06 18:39:31,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-06 18:39:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 463 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:39:32,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93543936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:32,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:32,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 116 [2024-11-06 18:39:32,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610755180] [2024-11-06 18:39:32,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:32,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-11-06 18:39:32,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-11-06 18:39:32,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=12872, Unknown=0, NotChecked=0, Total=13340 [2024-11-06 18:39:32,769 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 116 states, 116 states have (on average 2.1810344827586206) internal successors, (253), 116 states have internal predecessors, (253), 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)