./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_i5_o5-1.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/recursive-simple/id_i5_o5-1.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', '019a1f0c8a0db266ae045e6c9616b1be3853f9265d9110ea0f95df9172dad7ef'] 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/recursive-simple/id_i5_o5-1.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 019a1f0c8a0db266ae045e6c9616b1be3853f9265d9110ea0f95df9172dad7ef --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 23:49:23,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 23:49:23,119 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 23:49:23,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 23:49:23,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 23:49:23,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 23:49:23,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 23:49:23,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 23:49:23,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 23:49:23,150 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 23:49:23,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 23:49:23,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 23:49:23,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 23:49:23,151 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 23:49:23,151 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 23:49:23,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 23:49:23,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 23:49:23,152 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 23:49:23,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 23:49:23,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 23:49:23,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 23:49:23,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 23:49:23,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 23:49:23,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 23:49:23,153 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 23:49:23,153 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 23:49:23,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 23:49:23,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:49:23,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 23:49:23,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 23:49:23,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 23:49:23,155 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 -> 019a1f0c8a0db266ae045e6c9616b1be3853f9265d9110ea0f95df9172dad7ef [2024-11-06 23:49:23,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 23:49:23,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 23:49:23,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 23:49:23,443 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 23:49:23,443 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 23:49:23,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2024-11-06 23:49:24,773 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 23:49:24,985 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 23:49:24,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2024-11-06 23:49:24,991 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fce1917ec/61842d893fa14d6495ff3d3c7fd34f8f/FLAG73bab8785 [2024-11-06 23:49:25,011 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fce1917ec/61842d893fa14d6495ff3d3c7fd34f8f [2024-11-06 23:49:25,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 23:49:25,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 23:49:25,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 23:49:25,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 23:49:25,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 23:49:25,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7556c5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25, skipping insertion in model container [2024-11-06 23:49:25,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,030 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 23:49:25,139 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/recursive-simple/id_i5_o5-1.c[450,463] [2024-11-06 23:49:25,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:49:25,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 23:49:25,165 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/recursive-simple/id_i5_o5-1.c[450,463] [2024-11-06 23:49:25,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:49:25,180 INFO L204 MainTranslator]: Completed translation [2024-11-06 23:49:25,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25 WrapperNode [2024-11-06 23:49:25,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 23:49:25,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 23:49:25,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 23:49:25,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 23:49:25,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,206 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-11-06 23:49:25,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 23:49:25,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 23:49:25,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 23:49:25,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 23:49:25,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,216 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,225 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]. [2024-11-06 23:49:25,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 23:49:25,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 23:49:25,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 23:49:25,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 23:49:25,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (1/1) ... [2024-11-06 23:49:25,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:49:25,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:49:25,266 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 23:49:25,273 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 23:49:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 23:49:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 23:49:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 23:49:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 23:49:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-11-06 23:49:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-11-06 23:49:25,343 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 23:49:25,344 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 23:49:25,415 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-06 23:49:25,415 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 23:49:25,422 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 23:49:25,423 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-06 23:49:25,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:49:25 BoogieIcfgContainer [2024-11-06 23:49:25,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 23:49:25,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 23:49:25,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 23:49:25,431 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 23:49:25,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:49:25" (1/3) ... [2024-11-06 23:49:25,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afb22df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:49:25, skipping insertion in model container [2024-11-06 23:49:25,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:25" (2/3) ... [2024-11-06 23:49:25,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afb22df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:49:25, skipping insertion in model container [2024-11-06 23:49:25,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:49:25" (3/3) ... [2024-11-06 23:49:25,433 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i5_o5-1.c [2024-11-06 23:49:25,447 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 23:49:25,447 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 23:49:25,498 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 23:49:25,512 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;@74beba6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 23:49:25,512 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 23:49:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 23:49:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-06 23:49:25,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:49:25,525 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:49:25,526 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:49:25,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:49:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2024-11-06 23:49:25,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:49:25,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070469404] [2024-11-06 23:49:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:25,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:49:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:25,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:25,792 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 23:49:25,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:49:25,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070469404] [2024-11-06 23:49:25,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070469404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:49:25,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:49:25,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:49:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847523510] [2024-11-06 23:49:25,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:49:25,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:49:25,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:49:25,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:49:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:49:25,823 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:49:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:49:25,875 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-06 23:49:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:49:25,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-06 23:49:25,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:49:25,883 INFO L225 Difference]: With dead ends: 25 [2024-11-06 23:49:25,883 INFO L226 Difference]: Without dead ends: 15 [2024-11-06 23:49:25,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:49:25,888 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:49:25,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:49:25,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-06 23:49:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-06 23:49:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:49:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-06 23:49:25,916 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-11-06 23:49:25,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:49:25,918 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-06 23:49:25,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:49:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-06 23:49:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-06 23:49:25,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:49:25,919 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:49:25,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 23:49:25,920 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:49:25,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:49:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2024-11-06 23:49:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:49:25,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31457086] [2024-11-06 23:49:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:25,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:49:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:26,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:26,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 23:49:26,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:49:26,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31457086] [2024-11-06 23:49:26,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31457086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:49:26,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284179621] [2024-11-06 23:49:26,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:26,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:49:26,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:49:26,178 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 23:49:26,180 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 23:49:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:26,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 23:49:26,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:49:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-06 23:49:26,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:49:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 23:49:26,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284179621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:49:26,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:49:26,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-11-06 23:49:26,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580819693] [2024-11-06 23:49:26,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:49:26,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 23:49:26,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:49:26,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 23:49:26,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-06 23:49:26,543 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 23:49:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:49:26,599 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-06 23:49:26,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 23:49:26,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 16 [2024-11-06 23:49:26,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:49:26,602 INFO L225 Difference]: With dead ends: 22 [2024-11-06 23:49:26,602 INFO L226 Difference]: Without dead ends: 18 [2024-11-06 23:49:26,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-06 23:49:26,603 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:49:26,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 44 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:49:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-06 23:49:26,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-06 23:49:26,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 23:49:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-06 23:49:26,609 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2024-11-06 23:49:26,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:49:26,609 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-06 23:49:26,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 23:49:26,610 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-06 23:49:26,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-06 23:49:26,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:49:26,610 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:49:26,628 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 23:49:26,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:49:26,811 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:49:26,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:49:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2024-11-06 23:49:26,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:49:26,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146016526] [2024-11-06 23:49:26,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:26,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:49:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:26,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:26,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:26,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 23:49:27,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:49:27,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146016526] [2024-11-06 23:49:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146016526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:49:27,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987923321] [2024-11-06 23:49:27,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:49:27,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:49:27,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:49:27,048 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 23:49:27,050 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 23:49:27,093 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:49:27,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:49:27,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-06 23:49:27,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:49:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-06 23:49:27,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:49:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 23:49:27,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987923321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:49:27,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:49:27,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 14 [2024-11-06 23:49:27,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307494506] [2024-11-06 23:49:27,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:49:27,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 23:49:27,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:49:27,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 23:49:27,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-06 23:49:27,515 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-06 23:49:27,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:49:27,566 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-06 23:49:27,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 23:49:27,567 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 22 [2024-11-06 23:49:27,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:49:27,568 INFO L225 Difference]: With dead ends: 25 [2024-11-06 23:49:27,568 INFO L226 Difference]: Without dead ends: 21 [2024-11-06 23:49:27,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:49:27,569 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:49:27,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 45 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:49:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-06 23:49:27,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-06 23:49:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:49:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-06 23:49:27,584 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2024-11-06 23:49:27,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:49:27,584 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-06 23:49:27,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-06 23:49:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-06 23:49:27,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-06 23:49:27,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:49:27,585 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:49:27,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 23:49:27,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:49:27,786 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:49:27,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:49:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2024-11-06 23:49:27,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:49:27,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142914469] [2024-11-06 23:49:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:27,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:49:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:27,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:27,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:27,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:27,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 23:49:28,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:49:28,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142914469] [2024-11-06 23:49:28,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142914469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:49:28,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657251978] [2024-11-06 23:49:28,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 23:49:28,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:49:28,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:49:28,023 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 23:49:28,025 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 23:49:28,068 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 23:49:28,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:49:28,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-06 23:49:28,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:49:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 23:49:28,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:49:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 23:49:28,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657251978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:49:28,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:49:28,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 22 [2024-11-06 23:49:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487821369] [2024-11-06 23:49:28,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:49:28,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 23:49:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:49:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 23:49:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-06 23:49:28,656 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 16 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 9 states have return successors, (10), 10 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-06 23:49:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:49:28,885 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2024-11-06 23:49:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 23:49:28,886 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 16 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 9 states have return successors, (10), 10 states have call predecessors, (10), 3 states have call successors, (10) Word has length 28 [2024-11-06 23:49:28,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:49:28,887 INFO L225 Difference]: With dead ends: 33 [2024-11-06 23:49:28,887 INFO L226 Difference]: Without dead ends: 27 [2024-11-06 23:49:28,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2024-11-06 23:49:28,888 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:49:28,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 94 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:49:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-06 23:49:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-06 23:49:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 23:49:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-06 23:49:28,896 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 28 [2024-11-06 23:49:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:49:28,896 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-06 23:49:28,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 16 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 9 states have return successors, (10), 10 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-06 23:49:28,897 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-06 23:49:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-06 23:49:28,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:49:28,900 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:49:28,916 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 23:49:29,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:49:29,100 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:49:29,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:49:29,101 INFO L85 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 4 times [2024-11-06 23:49:29,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:49:29,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606587343] [2024-11-06 23:49:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:29,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:49:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-06 23:49:29,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-06 23:49:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-06 23:49:29,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-06 23:49:29,134 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-06 23:49:29,135 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 23:49:29,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 23:49:29,142 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1] [2024-11-06 23:49:29,162 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 23:49:29,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:49:29 BoogieIcfgContainer [2024-11-06 23:49:29,166 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 23:49:29,167 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 23:49:29,167 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 23:49:29,167 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 23:49:29,167 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:49:25" (3/4) ... [2024-11-06 23:49:29,168 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-06 23:49:29,201 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 23:49:29,201 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 23:49:29,202 INFO L158 Benchmark]: Toolchain (without parser) took 4187.83ms. Allocated memory is still 100.7MB. Free memory was 76.7MB in the beginning and 25.3MB in the end (delta: 51.4MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2024-11-06 23:49:29,203 INFO L158 Benchmark]: CDTParser took 0.86ms. Allocated memory is still 83.9MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:49:29,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.58ms. Allocated memory is still 100.7MB. Free memory was 76.5MB in the beginning and 66.1MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:49:29,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.18ms. Allocated memory is still 100.7MB. Free memory was 66.1MB in the beginning and 65.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:49:29,206 INFO L158 Benchmark]: Boogie Preprocessor took 24.39ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 64.1MB in the end (delta: 924.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:49:29,206 INFO L158 Benchmark]: RCFGBuilder took 190.96ms. Allocated memory is still 100.7MB. Free memory was 64.1MB in the beginning and 55.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:49:29,206 INFO L158 Benchmark]: TraceAbstraction took 3739.96ms. Allocated memory is still 100.7MB. Free memory was 55.0MB in the beginning and 27.1MB in the end (delta: 27.9MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2024-11-06 23:49:29,207 INFO L158 Benchmark]: Witness Printer took 34.85ms. Allocated memory is still 100.7MB. Free memory was 27.1MB in the beginning and 25.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:49:29,208 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86ms. Allocated memory is still 83.9MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.58ms. Allocated memory is still 100.7MB. Free memory was 76.5MB in the beginning and 66.1MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.18ms. Allocated memory is still 100.7MB. Free memory was 66.1MB in the beginning and 65.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.39ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 64.1MB in the end (delta: 924.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 190.96ms. Allocated memory is still 100.7MB. Free memory was 64.1MB in the beginning and 55.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3739.96ms. Allocated memory is still 100.7MB. Free memory was 55.0MB in the beginning and 27.1MB in the end (delta: 27.9MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Witness Printer took 34.85ms. Allocated memory is still 100.7MB. Free memory was 27.1MB in the beginning and 25.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int input = 5; VAL [input=5] [L13] CALL, EXPR id(input) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, x=5] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) VAL [input=5] [L13] int result = id(input); [L14] COND TRUE result == 5 VAL [input=5] [L15] reach_error() VAL [input=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 236 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 190 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 192 IncrementalHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 46 mSDtfsCounter, 192 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 478 SizeOfPredicates, 3 NumberOfNonLiveVariables, 213 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 61/144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-06 23:49:29,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE