./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-33.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-33.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'db306fb71a2c499169cfbccecd2a6ee3c5f06d8426c432bc35438331c49d239a'] 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-33.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db306fb71a2c499169cfbccecd2a6ee3c5f06d8426c432bc35438331c49d239a --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 06:51:31,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 06:51:31,859 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 06:51:31,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 06:51:31,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 06:51:31,898 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 06:51:31,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 06:51:31,900 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 06:51:31,900 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 06:51:31,901 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 06:51:31,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 06:51:31,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 06:51:31,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 06:51:31,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 06:51:31,902 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 06:51:31,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 06:51:31,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 06:51:31,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 06:51:31,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 06:51:31,904 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 06:51:31,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 06:51:31,904 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 -> db306fb71a2c499169cfbccecd2a6ee3c5f06d8426c432bc35438331c49d239a [2024-11-07 06:51:32,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 06:51:32,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 06:51:32,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 06:51:32,222 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 06:51:32,222 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 06:51:32,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-33.i [2024-11-07 06:51:33,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 06:51:33,799 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 06:51:33,800 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-33.i [2024-11-07 06:51:33,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7f440f936/9386d81db89e4cdfad946fc9a638ed79/FLAG44c5a5ca3 [2024-11-07 06:51:33,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7f440f936/9386d81db89e4cdfad946fc9a638ed79 [2024-11-07 06:51:33,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 06:51:33,830 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 06:51:33,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 06:51:33,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 06:51:33,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 06:51:33,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:51:33" (1/1) ... [2024-11-07 06:51:33,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9cbe15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:33, skipping insertion in model container [2024-11-07 06:51:33,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:51:33" (1/1) ... [2024-11-07 06:51:33,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 06:51:33,993 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-33.i[919,932] [2024-11-07 06:51:34,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 06:51:34,077 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 06:51:34,090 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-33.i[919,932] [2024-11-07 06:51:34,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 06:51:34,139 INFO L204 MainTranslator]: Completed translation [2024-11-07 06:51:34,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34 WrapperNode [2024-11-07 06:51:34,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 06:51:34,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 06:51:34,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 06:51:34,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 06:51:34,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,225 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 201 [2024-11-07 06:51:34,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 06:51:34,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 06:51:34,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 06:51:34,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 06:51:34,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,260 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 06:51:34,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 06:51:34,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 06:51:34,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 06:51:34,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 06:51:34,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (1/1) ... [2024-11-07 06:51:34,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 06:51:34,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 06:51:34,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 06:51:34,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 06:51:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 06:51:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-07 06:51:34,362 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-07 06:51:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 06:51:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 06:51:34,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 06:51:34,462 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 06:51:34,464 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 06:51:34,932 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-07 06:51:34,932 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 06:51:34,942 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 06:51:34,943 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 06:51:34,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:51:34 BoogieIcfgContainer [2024-11-07 06:51:34,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 06:51:34,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 06:51:34,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 06:51:34,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 06:51:34,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:51:33" (1/3) ... [2024-11-07 06:51:34,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f22f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:51:34, skipping insertion in model container [2024-11-07 06:51:34,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:51:34" (2/3) ... [2024-11-07 06:51:34,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f22f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:51:34, skipping insertion in model container [2024-11-07 06:51:34,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:51:34" (3/3) ... [2024-11-07 06:51:34,951 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-33.i [2024-11-07 06:51:34,965 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 06:51:34,965 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 06:51:35,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 06:51:35,036 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;@531c56e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 06:51:35,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 06:51:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 60 states have internal predecessors, (86), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-07 06:51:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-07 06:51:35,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 06:51:35,054 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 06:51:35,055 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 06:51:35,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 06:51:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash 604738538, now seen corresponding path program 1 times [2024-11-07 06:51:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 06:51:35,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356738172] [2024-11-07 06:51:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 06:51:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 06:51:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 06:51:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 06:51:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 06:51:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 06:51:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-07 06:51:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 06:51:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-07 06:51:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-07 06:51:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-07 06:51:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 06:51:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 06:51:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 06:51:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-07 06:51:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-07 06:51:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 06:51:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-07 06:51:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-07 06:51:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-07 06:51:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-07 06:51:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-11-07 06:51:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-07 06:51:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-07 06:51:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-07 06:51:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-07 06:51:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-11-07 06:51:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-11-07 06:51:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-07 06:51:35,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 06:51:35,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356738172] [2024-11-07 06:51:35,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356738172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 06:51:35,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 06:51:35,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 06:51:35,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520243119] [2024-11-07 06:51:35,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 06:51:35,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 06:51:35,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 06:51:35,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 06:51:35,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 06:51:35,613 INFO L87 Difference]: Start difference. First operand has 88 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 60 states have internal predecessors, (86), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-07 06:51:35,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 06:51:35,648 INFO L93 Difference]: Finished difference Result 167 states and 292 transitions. [2024-11-07 06:51:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 06:51:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2024-11-07 06:51:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 06:51:35,658 INFO L225 Difference]: With dead ends: 167 [2024-11-07 06:51:35,658 INFO L226 Difference]: Without dead ends: 82 [2024-11-07 06:51:35,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 06:51:35,665 INFO L432 NwaCegarLoop]: 123 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, 123 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 06:51:35,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 06:51:35,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-07 06:51:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-07 06:51:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-07 06:51:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 123 transitions. [2024-11-07 06:51:35,709 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 123 transitions. Word has length 169 [2024-11-07 06:51:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 06:51:35,709 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 123 transitions. [2024-11-07 06:51:35,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-07 06:51:35,710 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 123 transitions. [2024-11-07 06:51:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-07 06:51:35,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 06:51:35,713 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 06:51:35,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 06:51:35,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 06:51:35,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 06:51:35,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1527114198, now seen corresponding path program 1 times [2024-11-07 06:51:35,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 06:51:35,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121786781] [2024-11-07 06:51:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 06:51:35,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 06:51:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 06:51:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 06:51:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 06:51:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 06:51:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-07 06:51:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 06:51:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-07 06:51:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-07 06:51:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-07 06:51:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 06:51:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 06:51:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 06:51:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-07 06:51:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-07 06:51:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 06:51:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-07 06:51:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-07 06:51:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-07 06:51:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-07 06:51:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-11-07 06:51:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-07 06:51:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-07 06:51:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-07 06:51:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-07 06:51:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-11-07 06:51:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-11-07 06:51:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-07 06:51:36,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 06:51:36,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121786781] [2024-11-07 06:51:36,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121786781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 06:51:36,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 06:51:36,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 06:51:36,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576708555] [2024-11-07 06:51:36,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 06:51:36,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 06:51:36,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 06:51:36,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 06:51:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 06:51:36,969 INFO L87 Difference]: Start difference. First operand 82 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-07 06:51:37,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 06:51:37,294 INFO L93 Difference]: Finished difference Result 245 states and 371 transitions. [2024-11-07 06:51:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 06:51:37,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169 [2024-11-07 06:51:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 06:51:37,297 INFO L225 Difference]: With dead ends: 245 [2024-11-07 06:51:37,298 INFO L226 Difference]: Without dead ends: 166 [2024-11-07 06:51:37,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 06:51:37,302 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 92 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 06:51:37,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 302 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 06:51:37,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-07 06:51:37,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2024-11-07 06:51:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 97 states have (on average 1.309278350515464) internal successors, (127), 97 states have internal predecessors, (127), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-07 06:51:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2024-11-07 06:51:37,344 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 169 [2024-11-07 06:51:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 06:51:37,345 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2024-11-07 06:51:37,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-07 06:51:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2024-11-07 06:51:37,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-07 06:51:37,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 06:51:37,350 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 06:51:37,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 06:51:37,351 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 06:51:37,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 06:51:37,351 INFO L85 PathProgramCache]: Analyzing trace with hash -78330051, now seen corresponding path program 1 times [2024-11-07 06:51:37,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 06:51:37,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861941514] [2024-11-07 06:51:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 06:51:37,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 06:51:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 06:51:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 06:51:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 06:51:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 06:51:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-07 06:51:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 06:51:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-07 06:51:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-07 06:51:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-07 06:51:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 06:51:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 06:51:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 06:51:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-07 06:51:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-07 06:51:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 06:51:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-07 06:51:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-07 06:51:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-07 06:51:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-07 06:51:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-11-07 06:51:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-07 06:51:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-07 06:51:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-07 06:51:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-07 06:51:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-11-07 06:51:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-11-07 06:51:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 06:51:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-07 06:51:37,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 06:51:37,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861941514] [2024-11-07 06:51:37,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861941514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 06:51:37,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 06:51:37,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 06:51:37,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292280976] [2024-11-07 06:51:37,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 06:51:37,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 06:51:37,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 06:51:37,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 06:51:37,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 06:51:37,793 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-07 06:51:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 06:51:38,022 INFO L93 Difference]: Finished difference Result 254 states and 382 transitions. [2024-11-07 06:51:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 06:51:38,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 170 [2024-11-07 06:51:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 06:51:38,026 INFO L225 Difference]: With dead ends: 254 [2024-11-07 06:51:38,028 INFO L226 Difference]: Without dead ends: 162 [2024-11-07 06:51:38,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 06:51:38,030 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 89 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 06:51:38,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 307 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 06:51:38,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-07 06:51:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 153. [2024-11-07 06:51:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 98 states have internal predecessors, (127), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-07 06:51:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 231 transitions. [2024-11-07 06:51:38,071 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 231 transitions. Word has length 170 [2024-11-07 06:51:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 06:51:38,072 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 231 transitions. [2024-11-07 06:51:38,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-07 06:51:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 231 transitions. [2024-11-07 06:51:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-07 06:51:38,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 06:51:38,074 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 06:51:38,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 06:51:38,075 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 06:51:38,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 06:51:38,075 INFO L85 PathProgramCache]: Analyzing trace with hash 367629671, now seen corresponding path program 1 times [2024-11-07 06:51:38,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 06:51:38,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469625082] [2024-11-07 06:51:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 06:51:38,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 06:51:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat