./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.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/nla-digbench-scaling/bresenham-ll_valuebound2.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', '72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9'] 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/nla-digbench-scaling/bresenham-ll_valuebound2.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 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:48:47,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:48:47,233 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:48:47,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:48:47,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:48:47,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:48:47,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:48:47,265 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:48:47,265 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:48:47,265 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:48:47,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:48:47,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:48:47,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:48:47,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:48:47,266 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:48:47,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:48:47,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:48:47,267 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:48:47,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:48:47,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:48:47,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:48:47,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:48:47,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:48:47,268 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:48:47,268 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:48:47,268 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:48:47,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:48:47,268 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:48:47,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:48:47,268 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:48:47,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:48:47,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:48:47,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:48:47,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:48:47,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:48:47,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:48:47,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:48:47,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:48:47,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:48:47,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:48:47,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:48:47,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:48:47,270 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 -> 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 [2024-11-06 22:48:47,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:48:47,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:48:47,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:48:47,483 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:48:47,483 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:48:47,484 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2024-11-06 22:48:48,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:48:48,771 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:48:48,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2024-11-06 22:48:48,776 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e2a41b878/9a7ca97907ec47aa9e79d9a33ef7ce55/FLAG6ae02dd59 [2024-11-06 22:48:49,161 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e2a41b878/9a7ca97907ec47aa9e79d9a33ef7ce55 [2024-11-06 22:48:49,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:48:49,163 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:48:49,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:48:49,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:48:49,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:48:49,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b51d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49, skipping insertion in model container [2024-11-06 22:48:49,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:48:49,267 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/nla-digbench-scaling/bresenham-ll_valuebound2.c[597,610] [2024-11-06 22:48:49,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:48:49,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:48:49,295 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/nla-digbench-scaling/bresenham-ll_valuebound2.c[597,610] [2024-11-06 22:48:49,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:48:49,308 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:48:49,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49 WrapperNode [2024-11-06 22:48:49,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:48:49,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:48:49,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:48:49,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:48:49,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,329 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2024-11-06 22:48:49,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:48:49,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:48:49,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:48:49,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:48:49,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,341 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,347 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 22:48:49,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,356 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:48:49,361 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:48:49,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:48:49,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:48:49,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (1/1) ... [2024-11-06 22:48:49,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:48:49,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:48:49,386 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 22:48:49,391 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 22:48:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:48:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 22:48:49,408 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 22:48:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:48:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:48:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:48:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 22:48:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 22:48:49,448 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:48:49,449 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:48:49,526 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-06 22:48:49,526 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:48:49,533 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:48:49,533 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 22:48:49,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:49 BoogieIcfgContainer [2024-11-06 22:48:49,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:48:49,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:48:49,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:48:49,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:48:49,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:49" (1/3) ... [2024-11-06 22:48:49,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44627836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:49, skipping insertion in model container [2024-11-06 22:48:49,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:49" (2/3) ... [2024-11-06 22:48:49,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44627836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:49, skipping insertion in model container [2024-11-06 22:48:49,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:49" (3/3) ... [2024-11-06 22:48:49,540 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound2.c [2024-11-06 22:48:49,549 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:48:49,550 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 22:48:49,583 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:48:49,589 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;@1a6b0fcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:48:49,590 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 22:48:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 22:48:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 22:48:49,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:48:49,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:48:49,597 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:48:49,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:48:49,599 INFO L85 PathProgramCache]: Analyzing trace with hash 689891435, now seen corresponding path program 1 times [2024-11-06 22:48:49,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:48:49,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011882612] [2024-11-06 22:48:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:48:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:49,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:48:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:49,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:48:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:48:49,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:48:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011882612] [2024-11-06 22:48:49,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011882612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:48:49,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:48:49,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 22:48:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499508586] [2024-11-06 22:48:49,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:48:49,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 22:48:49,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:48:49,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 22:48:49,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:48:49,713 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 22:48:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:48:49,722 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2024-11-06 22:48:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 22:48:49,723 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-06 22:48:49,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:48:49,727 INFO L225 Difference]: With dead ends: 51 [2024-11-06 22:48:49,727 INFO L226 Difference]: Without dead ends: 23 [2024-11-06 22:48:49,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:48:49,730 INFO L432 NwaCegarLoop]: 30 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, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:48:49,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:48:49,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-06 22:48:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-06 22:48:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 22:48:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-06 22:48:49,752 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2024-11-06 22:48:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:48:49,752 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-06 22:48:49,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 22:48:49,752 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-06 22:48:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 22:48:49,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:48:49,753 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:48:49,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:48:49,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:48:49,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:48:49,754 INFO L85 PathProgramCache]: Analyzing trace with hash 90086127, now seen corresponding path program 1 times [2024-11-06 22:48:49,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:48:49,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990046401] [2024-11-06 22:48:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:49,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:48:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:48:49,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160536698] [2024-11-06 22:48:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:49,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:48:49,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:48:49,784 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 22:48:49,786 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 22:48:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:49,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 22:48:49,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:48:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:48:49,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:48:49,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:48:49,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990046401] [2024-11-06 22:48:49,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:48:49,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160536698] [2024-11-06 22:48:49,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160536698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:48:49,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:48:49,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 22:48:49,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388961425] [2024-11-06 22:48:49,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:48:49,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:48:49,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:48:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:48:49,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:48:49,962 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 22:48:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:48:50,050 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-11-06 22:48:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:48:50,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-06 22:48:50,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:48:50,051 INFO L225 Difference]: With dead ends: 35 [2024-11-06 22:48:50,051 INFO L226 Difference]: Without dead ends: 33 [2024-11-06 22:48:50,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:48:50,052 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:48:50,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 78 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:48:50,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-06 22:48:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2024-11-06 22:48:50,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 22:48:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-06 22:48:50,058 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2024-11-06 22:48:50,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:48:50,058 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-06 22:48:50,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 22:48:50,059 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-06 22:48:50,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-06 22:48:50,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:48:50,059 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:48:50,071 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 22:48:50,261 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 22:48:50,261 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:48:50,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:48:50,262 INFO L85 PathProgramCache]: Analyzing trace with hash 602130797, now seen corresponding path program 1 times [2024-11-06 22:48:50,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:48:50,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814662328] [2024-11-06 22:48:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:50,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:48:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:50,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:48:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:50,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:48:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:50,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:48:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:48:50,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:48:50,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814662328] [2024-11-06 22:48:50,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814662328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:48:50,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348487117] [2024-11-06 22:48:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:50,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:48:50,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:48:50,491 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 22:48:50,492 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 22:48:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:50,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 22:48:50,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:48:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:48:50,625 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:48:50,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348487117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:48:50,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:48:50,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-06 22:48:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628293441] [2024-11-06 22:48:50,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:48:50,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:48:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:48:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:48:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:48:50,626 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 22:48:50,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:48:50,699 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-11-06 22:48:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:48:50,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-11-06 22:48:50,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:48:50,701 INFO L225 Difference]: With dead ends: 39 [2024-11-06 22:48:50,701 INFO L226 Difference]: Without dead ends: 31 [2024-11-06 22:48:50,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-06 22:48:50,702 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:48:50,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 78 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:48:50,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-06 22:48:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-06 22:48:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 22:48:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-06 22:48:50,709 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 26 [2024-11-06 22:48:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:48:50,709 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-06 22:48:50,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 22:48:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-06 22:48:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-06 22:48:50,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:48:50,710 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:48:50,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 22:48:50,914 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 22:48:50,915 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:48:50,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:48:50,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1522625704, now seen corresponding path program 1 times [2024-11-06 22:48:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:48:50,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891619605] [2024-11-06 22:48:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:50,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:48:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:48:50,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669126346] [2024-11-06 22:48:50,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:50,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:48:50,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:48:50,935 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 22:48:50,936 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 22:48:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:50,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-06 22:48:50,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:48:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:48:51,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:48:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:48:51,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:48:51,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891619605] [2024-11-06 22:48:51,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:48:51,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669126346] [2024-11-06 22:48:51,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669126346] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:48:51,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:48:51,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 22 [2024-11-06 22:48:51,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64883075] [2024-11-06 22:48:51,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:48:51,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 22:48:51,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:48:51,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 22:48:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-11-06 22:48:51,527 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 20 states have internal predecessors, (32), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-06 22:48:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:48:52,061 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2024-11-06 22:48:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-06 22:48:52,061 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 20 states have internal predecessors, (32), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2024-11-06 22:48:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:48:52,062 INFO L225 Difference]: With dead ends: 61 [2024-11-06 22:48:52,062 INFO L226 Difference]: Without dead ends: 33 [2024-11-06 22:48:52,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-11-06 22:48:52,063 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 41 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:48:52,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 169 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:48:52,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-06 22:48:52,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-06 22:48:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 22:48:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-11-06 22:48:52,069 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2024-11-06 22:48:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:48:52,070 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-11-06 22:48:52,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 20 states have internal predecessors, (32), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-06 22:48:52,070 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-11-06 22:48:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-06 22:48:52,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:48:52,071 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:48:52,083 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 22:48:52,275 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 22:48:52,276 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:48:52,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:48:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1035193378, now seen corresponding path program 1 times [2024-11-06 22:48:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:48:52,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147755863] [2024-11-06 22:48:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:52,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:48:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:48:52,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219949434] [2024-11-06 22:48:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:52,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:48:52,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:48:52,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:48:52,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 22:48:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:52,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-06 22:48:52,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:48:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-06 22:48:52,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:48:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 22:48:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:48:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147755863] [2024-11-06 22:48:53,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:48:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219949434] [2024-11-06 22:48:53,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219949434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:48:53,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:48:53,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2024-11-06 22:48:53,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208416148] [2024-11-06 22:48:53,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:48:53,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-06 22:48:53,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:48:53,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-06 22:48:53,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-11-06 22:48:53,214 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-06 22:48:54,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:48:54,392 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-06 22:48:54,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-06 22:48:54,393 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 35 [2024-11-06 22:48:54,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:48:54,394 INFO L225 Difference]: With dead ends: 51 [2024-11-06 22:48:54,394 INFO L226 Difference]: Without dead ends: 43 [2024-11-06 22:48:54,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 22:48:54,395 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 22:48:54,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 121 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 22:48:54,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-06 22:48:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-06 22:48:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-06 22:48:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-11-06 22:48:54,405 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 35 [2024-11-06 22:48:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:48:54,406 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-11-06 22:48:54,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-06 22:48:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-11-06 22:48:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-06 22:48:54,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:48:54,407 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:48:54,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 22:48:54,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:48:54,611 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:48:54,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:48:54,612 INFO L85 PathProgramCache]: Analyzing trace with hash 614391490, now seen corresponding path program 1 times [2024-11-06 22:48:54,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:48:54,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672606681] [2024-11-06 22:48:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:54,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:48:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:54,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:48:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:54,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:48:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:54,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:48:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:54,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:48:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:54,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 22:48:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:54,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:48:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 22:48:54,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:48:54,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672606681] [2024-11-06 22:48:54,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672606681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:48:54,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881643074] [2024-11-06 22:48:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:54,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:48:54,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:48:54,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:48:54,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 22:48:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:54,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 22:48:54,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:48:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 22:48:54,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:48:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 22:48:54,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881643074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:48:54,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:48:54,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-06 22:48:54,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7068222] [2024-11-06 22:48:54,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:48:54,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:48:54,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:48:54,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:48:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:48:54,838 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-06 22:48:54,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:48:54,892 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2024-11-06 22:48:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:48:54,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 53 [2024-11-06 22:48:54,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:48:54,894 INFO L225 Difference]: With dead ends: 77 [2024-11-06 22:48:54,894 INFO L226 Difference]: Without dead ends: 58 [2024-11-06 22:48:54,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:48:54,895 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:48:54,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 86 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:48:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-06 22:48:54,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-06 22:48:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-06 22:48:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-11-06 22:48:54,907 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 53 [2024-11-06 22:48:54,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:48:54,907 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-11-06 22:48:54,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-06 22:48:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-11-06 22:48:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-06 22:48:54,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:48:54,911 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:48:54,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 22:48:55,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:48:55,112 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:48:55,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:48:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1191046844, now seen corresponding path program 2 times [2024-11-06 22:48:55,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:48:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842606087] [2024-11-06 22:48:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:48:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:55,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:48:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:55,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:48:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:55,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:48:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:55,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:48:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:55,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 22:48:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:55,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:48:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 22:48:55,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:48:55,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842606087] [2024-11-06 22:48:55,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842606087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:48:55,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129133355] [2024-11-06 22:48:55,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:48:55,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:48:55,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:48:55,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:48:55,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 22:48:55,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:48:55,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:48:55,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 22:48:55,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:48:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 22:48:55,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:48:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 22:48:55,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129133355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:48:55,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:48:55,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-06 22:48:55,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988373188] [2024-11-06 22:48:55,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:48:55,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-06 22:48:55,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:48:55,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-06 22:48:55,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2024-11-06 22:48:55,714 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-06 22:48:56,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:48:56,198 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2024-11-06 22:48:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-06 22:48:56,199 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 53 [2024-11-06 22:48:56,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:48:56,200 INFO L225 Difference]: With dead ends: 81 [2024-11-06 22:48:56,200 INFO L226 Difference]: Without dead ends: 75 [2024-11-06 22:48:56,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=1195, Unknown=0, NotChecked=0, Total=1482 [2024-11-06 22:48:56,201 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:48:56,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 203 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:48:56,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-06 22:48:56,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2024-11-06 22:48:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-06 22:48:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-11-06 22:48:56,216 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 53 [2024-11-06 22:48:56,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:48:56,216 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-11-06 22:48:56,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-06 22:48:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-11-06 22:48:56,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-06 22:48:56,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:48:56,217 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:48:56,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 22:48:56,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-06 22:48:56,418 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:48:56,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:48:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash -760576591, now seen corresponding path program 3 times [2024-11-06 22:48:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:48:56,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651947086] [2024-11-06 22:48:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:48:56,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:48:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:56,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:48:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:56,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:48:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:56,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:48:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:56,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:48:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:56,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 22:48:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:56,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:48:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:56,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-06 22:48:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:48:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-06 22:48:56,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:48:56,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651947086] [2024-11-06 22:48:56,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651947086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:48:56,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146553299] [2024-11-06 22:48:56,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:48:56,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:48:56,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:48:56,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:48:56,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 22:48:56,755 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-06 22:48:56,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:48:56,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-06 22:48:56,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:48:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-06 22:48:57,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:49:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-06 22:49:11,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146553299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:49:11,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:49:11,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 12] total 36 [2024-11-06 22:49:11,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621440021] [2024-11-06 22:49:11,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:49:11,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-06 22:49:11,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:11,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-06 22:49:11,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1124, Unknown=3, NotChecked=0, Total=1260 [2024-11-06 22:49:11,228 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 36 states, 32 states have (on average 2.15625) internal successors, (69), 33 states have internal predecessors, (69), 13 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-06 22:49:14,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-06 22:49:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:28,896 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2024-11-06 22:49:28,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-06 22:49:28,896 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 2.15625) internal successors, (69), 33 states have internal predecessors, (69), 13 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) Word has length 62 [2024-11-06 22:49:28,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:28,897 INFO L225 Difference]: With dead ends: 90 [2024-11-06 22:49:28,897 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 22:49:28,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=563, Invalid=3592, Unknown=5, NotChecked=0, Total=4160 [2024-11-06 22:49:28,898 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:28,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 263 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-06 22:49:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 22:49:28,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 22:49:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:49:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 22:49:28,899 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2024-11-06 22:49:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:28,899 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 22:49:28,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 2.15625) internal successors, (69), 33 states have internal predecessors, (69), 13 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-06 22:49:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 22:49:28,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 22:49:28,901 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 22:49:28,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-06 22:49:29,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:29,103 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2024-11-06 22:49:29,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 22:49:31,417 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 22:49:31,429 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-06 22:49:31,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:49:31 BoogieIcfgContainer [2024-11-06 22:49:31,439 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 22:49:31,440 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 22:49:31,440 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 22:49:31,440 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 22:49:31,440 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:49" (3/4) ... [2024-11-06 22:49:31,442 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 22:49:31,445 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-06 22:49:31,445 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-06 22:49:31,447 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-06 22:49:31,447 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 22:49:31,447 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-06 22:49:31,447 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 22:49:31,495 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 22:49:31,495 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 22:49:31,496 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 22:49:31,496 INFO L158 Benchmark]: Toolchain (without parser) took 42332.63ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 117.0MB in the beginning and 85.2MB in the end (delta: 31.8MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. [2024-11-06 22:49:31,496 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:49:31,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.02ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 105.6MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:49:31,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.12ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 104.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:49:31,497 INFO L158 Benchmark]: Boogie Preprocessor took 29.94ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 103.2MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:49:31,497 INFO L158 Benchmark]: RCFGBuilder took 173.15ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 92.4MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:49:31,497 INFO L158 Benchmark]: TraceAbstraction took 41904.06ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 91.8MB in the beginning and 90.7MB in the end (delta: 1.1MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. [2024-11-06 22:49:31,497 INFO L158 Benchmark]: Witness Printer took 55.72ms. Allocated memory is still 176.2MB. Free memory was 90.7MB in the beginning and 85.2MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:49:31,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 145.02ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 105.6MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.12ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 104.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.94ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 103.2MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 173.15ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 92.4MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 41904.06ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 91.8MB in the beginning and 90.7MB in the end (delta: 1.1MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. * Witness Printer took 55.72ms. Allocated memory is still 176.2MB. Free memory was 90.7MB in the beginning and 85.2MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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 - PositiveResult [Line: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.5s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 20.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 1028 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 868 mSDsCounter, 132 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1768 IncrementalHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 132 mSolverCounterUnsat, 160 mSDtfsCounter, 1768 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 653 GetRequests, 467 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1504 ImplicationChecksByTransitivity, 29.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=7, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 571 NumberOfCodeBlocks, 544 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 703 ConstructedInterpolants, 3 QuantifiedInterpolants, 4253 SizeOfPredicates, 24 NumberOfNonLiveVariables, 683 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 543/714 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((((__int128) X * y) * 2) + X) + v) == ((((__int128) Y * x) * 2) + ((long long) 2 * Y))) && (X <= 2)) && (0 <= Y)) && (Y <= 2)) && (0 <= X)) - ProcedureContractResult [Line: 10]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-06 22:49:31,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE