./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound50.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/geo1-u_unwindbound50.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', '98369d9212fd3855c7312ce1f4a6a94601b6c04438d46f463a4c8e55ff4dc367'] 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/geo1-u_unwindbound50.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 98369d9212fd3855c7312ce1f4a6a94601b6c04438d46f463a4c8e55ff4dc367 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 23:00:50,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 23:00:50,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 23:00:50,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 23:00:50,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 23:00:50,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 23:00:50,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 23:00:50,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 23:00:50,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 23:00:50,165 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 23:00:50,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 23:00:50,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 23:00:50,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 23:00:50,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 23:00:50,166 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 23:00:50,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 23:00:50,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:00:50,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 23:00:50,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 23:00:50,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 23:00:50,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 23:00:50,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 23:00:50,168 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 23:00:50,168 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 23:00:50,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 23:00:50,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 23:00:50,168 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 -> 98369d9212fd3855c7312ce1f4a6a94601b6c04438d46f463a4c8e55ff4dc367 [2024-11-06 23:00:50,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 23:00:50,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 23:00:50,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 23:00:50,426 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 23:00:50,426 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 23:00:50,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound50.c [2024-11-06 23:00:51,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 23:00:51,819 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 23:00:51,820 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound50.c [2024-11-06 23:00:51,824 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/46060fe43/cbfd15b411734c11b7d142964cadf7f9/FLAG02fe92781 [2024-11-06 23:00:52,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/46060fe43/cbfd15b411734c11b7d142964cadf7f9 [2024-11-06 23:00:52,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 23:00:52,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 23:00:52,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 23:00:52,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 23:00:52,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 23:00:52,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3580cda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52, skipping insertion in model container [2024-11-06 23:00:52,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,210 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 23:00:52,292 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/geo1-u_unwindbound50.c[555,568] [2024-11-06 23:00:52,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:00:52,310 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 23:00:52,320 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/geo1-u_unwindbound50.c[555,568] [2024-11-06 23:00:52,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:00:52,331 INFO L204 MainTranslator]: Completed translation [2024-11-06 23:00:52,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52 WrapperNode [2024-11-06 23:00:52,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 23:00:52,332 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 23:00:52,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 23:00:52,332 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 23:00:52,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,347 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2024-11-06 23:00:52,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 23:00:52,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 23:00:52,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 23:00:52,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 23:00:52,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,363 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 23:00:52,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,363 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 23:00:52,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 23:00:52,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 23:00:52,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 23:00:52,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2024-11-06 23:00:52,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:00:52,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:00:52,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 23:00:52,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 23:00:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 23:00:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 23:00:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 23:00:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 23:00:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 23:00:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 23:00:52,453 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 23:00:52,458 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 23:00:52,571 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-06 23:00:52,572 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 23:00:52,581 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 23:00:52,582 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 23:00:52,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:52 BoogieIcfgContainer [2024-11-06 23:00:52,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 23:00:52,584 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 23:00:52,584 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 23:00:52,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 23:00:52,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:00:52" (1/3) ... [2024-11-06 23:00:52,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d78e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:52, skipping insertion in model container [2024-11-06 23:00:52,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (2/3) ... [2024-11-06 23:00:52,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d78e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:52, skipping insertion in model container [2024-11-06 23:00:52,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:52" (3/3) ... [2024-11-06 23:00:52,590 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound50.c [2024-11-06 23:00:52,601 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 23:00:52,601 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 23:00:52,642 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 23:00:52,652 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;@a81e23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 23:00:52,652 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 23:00:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 23:00:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-06 23:00:52,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:00:52,666 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:00:52,666 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:00:52,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:00:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash 561702714, now seen corresponding path program 1 times [2024-11-06 23:00:52,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:00:52,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405410037] [2024-11-06 23:00:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:00:52,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:00:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:00:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:00:52,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:00:52,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405410037] [2024-11-06 23:00:52,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405410037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:00:52,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:00:52,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 23:00:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928962755] [2024-11-06 23:00:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:00:52,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 23:00:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:00:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 23:00:52,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 23:00:52,806 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:00:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:00:52,817 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2024-11-06 23:00:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 23:00:52,818 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-06 23:00:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:00:52,823 INFO L225 Difference]: With dead ends: 34 [2024-11-06 23:00:52,823 INFO L226 Difference]: Without dead ends: 14 [2024-11-06 23:00:52,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 23:00:52,830 INFO L432 NwaCegarLoop]: 20 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, 20 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 23:00:52,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:00:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-06 23:00:52,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-06 23:00:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:00:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-06 23:00:52,855 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2024-11-06 23:00:52,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:00:52,856 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-06 23:00:52,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:00:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-06 23:00:52,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-06 23:00:52,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:00:52,856 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:00:52,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 23:00:52,857 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:00:52,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:00:52,857 INFO L85 PathProgramCache]: Analyzing trace with hash 180228959, now seen corresponding path program 1 times [2024-11-06 23:00:52,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:00:52,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227554162] [2024-11-06 23:00:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:00:52,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:00:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:00:52,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879239575] [2024-11-06 23:00:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:00:52,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:00:52,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:00:52,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:00:52,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 23:00:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:00:52,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 23:00:52,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:00:53,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:00:53,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 23:00:53,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:00:53,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227554162] [2024-11-06 23:00:53,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:00:53,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879239575] [2024-11-06 23:00:53,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879239575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:00:53,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:00:53,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:00:53,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2303010] [2024-11-06 23:00:53,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:00:53,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:00:53,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:00:53,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:00:53,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:00:53,008 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:00:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:00:53,045 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-06 23:00:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:00:53,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-06 23:00:53,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:00:53,047 INFO L225 Difference]: With dead ends: 25 [2024-11-06 23:00:53,047 INFO L226 Difference]: Without dead ends: 23 [2024-11-06 23:00:53,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:00:53,048 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:00:53,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:00:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-06 23:00:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-06 23:00:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 23:00:53,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-06 23:00:53,054 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 8 [2024-11-06 23:00:53,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:00:53,054 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-06 23:00:53,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:00:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-06 23:00:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-06 23:00:53,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:00:53,055 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:00:53,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 23:00:53,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:00:53,255 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:00:53,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:00:53,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1219556645, now seen corresponding path program 1 times [2024-11-06 23:00:53,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:00:53,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665093175] [2024-11-06 23:00:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:00:53,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:00:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:00:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:00:53,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:00:53,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665093175] [2024-11-06 23:00:53,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665093175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:00:53,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:00:53,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 23:00:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743299964] [2024-11-06 23:00:53,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:00:53,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 23:00:53,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:00:53,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 23:00:53,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 23:00:53,329 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:00:53,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:00:53,344 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-06 23:00:53,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 23:00:53,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-06 23:00:53,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:00:53,345 INFO L225 Difference]: With dead ends: 29 [2024-11-06 23:00:53,345 INFO L226 Difference]: Without dead ends: 21 [2024-11-06 23:00:53,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 23:00:53,346 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:00:53,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:00:53,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-06 23:00:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-06 23:00:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 23:00:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-06 23:00:53,351 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2024-11-06 23:00:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:00:53,351 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-06 23:00:53,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:00:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-06 23:00:53,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-06 23:00:53,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:00:53,351 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:00:53,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 23:00:53,352 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:00:53,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:00:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1817042812, now seen corresponding path program 1 times [2024-11-06 23:00:53,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:00:53,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715964132] [2024-11-06 23:00:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:00:53,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:00:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:00:53,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870500569] [2024-11-06 23:00:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:00:53,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:00:53,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:00:53,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:00:53,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 23:00:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-06 23:00:53,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-06 23:00:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-06 23:00:53,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-06 23:00:53,440 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-06 23:00:53,441 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 23:00:53,465 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 23:00:53,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:00:53,645 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-06 23:00:53,658 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 23:00:53,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:00:53 BoogieIcfgContainer [2024-11-06 23:00:53,660 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 23:00:53,662 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 23:00:53,662 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 23:00:53,662 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 23:00:53,663 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:52" (3/4) ... [2024-11-06 23:00:53,663 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-06 23:00:53,685 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 23:00:53,685 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 23:00:53,686 INFO L158 Benchmark]: Toolchain (without parser) took 1489.55ms. Allocated memory is still 117.4MB. Free memory was 94.3MB in the beginning and 82.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2024-11-06 23:00:53,686 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 83.9MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:00:53,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 134.57ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 83.0MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:00:53,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.55ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 82.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:00:53,687 INFO L158 Benchmark]: Boogie Preprocessor took 19.99ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 80.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:00:53,689 INFO L158 Benchmark]: RCFGBuilder took 214.44ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 71.1MB in the end (delta: 9.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-06 23:00:53,689 INFO L158 Benchmark]: TraceAbstraction took 1075.68ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 84.3MB in the end (delta: -13.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:00:53,689 INFO L158 Benchmark]: Witness Printer took 22.65ms. Allocated memory is still 117.4MB. Free memory was 84.3MB in the beginning and 82.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:00:53,690 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 83.9MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 134.57ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 83.0MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.55ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 82.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.99ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 80.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 214.44ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 71.1MB in the end (delta: 9.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1075.68ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 84.3MB in the end (delta: -13.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 22.65ms. Allocated memory is still 117.4MB. Free memory was 84.3MB in the beginning and 82.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int z, k; [L25] unsigned long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [c=1, counter=0, x=1, y=0, z=-4294967296] [L33] EXPR counter++ VAL [c=1, counter=1, x=1, y=0, z=-4294967296] [L33] COND TRUE counter++<50 [L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, counter=1, x=1, y=0, z=-4294967296] [L36] COND TRUE !(c < k) VAL [counter=1, x=1, y=0, z=-4294967296] [L45] x = x * (z - 1) VAL [counter=1, x=4294967295, y=0] [L47] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0, counter=1] [L16] COND TRUE !(cond) VAL [\old(cond)=0, counter=1] [L18] reach_error() VAL [\old(cond)=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 45 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 1 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-06 23:00:53,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE