./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '533002163507f0c639f96dad498aa5a77ce9293ee59501fe5d4faddfa0e552cb'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 533002163507f0c639f96dad498aa5a77ce9293ee59501fe5d4faddfa0e552cb --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 08:31:21,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 08:31:21,675 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 08:31:21,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 08:31:21,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 08:31:21,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 08:31:21,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 08:31:21,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 08:31:21,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 08:31:21,704 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 08:31:21,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 08:31:21,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 08:31:21,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 08:31:21,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 08:31:21,706 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 08:31:21,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 08:31:21,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 08:31:21,706 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 08:31:21,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 08:31:21,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 08:31:21,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 08:31:21,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 08:31:21,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 08:31:21,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 08:31:21,707 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 08:31:21,707 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 08:31:21,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 08:31:21,707 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 08:31:21,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 08:31:21,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 08:31:21,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 08:31:21,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 08:31:21,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 08:31:21,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 08:31:21,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 08:31:21,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 08:31:21,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 08:31:21,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 08:31:21,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 08:31:21,709 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 08:31:21,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 08:31:21,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 08:31:21,709 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 -> 533002163507f0c639f96dad498aa5a77ce9293ee59501fe5d4faddfa0e552cb [2024-11-07 08:31:21,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 08:31:21,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 08:31:21,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 08:31:21,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 08:31:21,965 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 08:31:21,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i [2024-11-07 08:31:23,134 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 08:31:23,373 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 08:31:23,375 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i [2024-11-07 08:31:23,382 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a09cc1558/1741bfede81b48c38050226fe99e3256/FLAGd35c9c932 [2024-11-07 08:31:23,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a09cc1558/1741bfede81b48c38050226fe99e3256 [2024-11-07 08:31:23,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 08:31:23,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 08:31:23,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 08:31:23,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 08:31:23,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 08:31:23,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@615147e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23, skipping insertion in model container [2024-11-07 08:31:23,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,729 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 08:31:23,816 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i[915,928] [2024-11-07 08:31:23,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 08:31:23,855 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 08:31:23,862 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i[915,928] [2024-11-07 08:31:23,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 08:31:23,889 INFO L204 MainTranslator]: Completed translation [2024-11-07 08:31:23,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23 WrapperNode [2024-11-07 08:31:23,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 08:31:23,892 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 08:31:23,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 08:31:23,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 08:31:23,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,932 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2024-11-07 08:31:23,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 08:31:23,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 08:31:23,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 08:31:23,939 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 08:31:23,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,948 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,959 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 08:31:23,959 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,960 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 08:31:23,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 08:31:23,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 08:31:23,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 08:31:23,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (1/1) ... [2024-11-07 08:31:23,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 08:31:23,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 08:31:24,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 08:31:24,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 08:31:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 08:31:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-07 08:31:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-07 08:31:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 08:31:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 08:31:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 08:31:24,082 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 08:31:24,085 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 08:31:24,262 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-07 08:31:24,263 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 08:31:24,269 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 08:31:24,269 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 08:31:24,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:31:24 BoogieIcfgContainer [2024-11-07 08:31:24,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 08:31:24,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 08:31:24,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 08:31:24,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 08:31:24,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:31:23" (1/3) ... [2024-11-07 08:31:24,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e752483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:31:24, skipping insertion in model container [2024-11-07 08:31:24,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:23" (2/3) ... [2024-11-07 08:31:24,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e752483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:31:24, skipping insertion in model container [2024-11-07 08:31:24,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:31:24" (3/3) ... [2024-11-07 08:31:24,277 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-42.i [2024-11-07 08:31:24,287 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 08:31:24,287 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 08:31:24,324 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 08:31:24,332 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;@5c10c666, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 08:31:24,332 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 08:31:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-07 08:31:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-07 08:31:24,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:31:24,345 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 08:31:24,345 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:31:24,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:31:24,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1995165226, now seen corresponding path program 1 times [2024-11-07 08:31:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:31:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555389365] [2024-11-07 08:31:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:31:24,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:31:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:31:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 08:31:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:31:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 08:31:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:31:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 08:31:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:31:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-07 08:31:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:31:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 08:31:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:31:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 08:31:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:31:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-07 08:31:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:31:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-07 08:31:24,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:31:24,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555389365] [2024-11-07 08:31:24,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555389365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:31:24,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:31:24,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 08:31:24,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106257984] [2024-11-07 08:31:24,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:31:24,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 08:31:24,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:31:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 08:31:24,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 08:31:24,638 INFO L87 Difference]: Start difference. First operand has 47 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-07 08:31:24,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:31:24,658 INFO L93 Difference]: Finished difference Result 87 states and 145 transitions. [2024-11-07 08:31:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 08:31:24,660 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 96 [2024-11-07 08:31:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:31:24,664 INFO L225 Difference]: With dead ends: 87 [2024-11-07 08:31:24,664 INFO L226 Difference]: Without dead ends: 43 [2024-11-07 08:31:24,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 08:31:24,670 INFO L432 NwaCegarLoop]: 61 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, 61 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 08:31:24,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 08:31:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-07 08:31:24,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-07 08:31:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-07 08:31:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 61 transitions. [2024-11-07 08:31:24,699 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 61 transitions. Word has length 96 [2024-11-07 08:31:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:31:24,700 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 61 transitions. [2024-11-07 08:31:24,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-07 08:31:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2024-11-07 08:31:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-07 08:31:24,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:31:24,704 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 08:31:24,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 08:31:24,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:31:24,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:31:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1979740120, now seen corresponding path program 1 times [2024-11-07 08:31:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:31:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090259822] [2024-11-07 08:31:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:31:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:31:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:31:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 08:31:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:31:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 08:31:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:31:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 08:31:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:31:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-07 08:31:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:31:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 08:31:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:31:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 08:31:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:31:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-07 08:31:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:31:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-07 08:31:24,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:31:24,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090259822] [2024-11-07 08:31:24,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090259822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:31:24,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:31:24,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 08:31:24,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681558140] [2024-11-07 08:31:24,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:31:24,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 08:31:24,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:31:24,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 08:31:24,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 08:31:24,916 INFO L87 Difference]: Start difference. First operand 43 states and 61 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-07 08:31:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:31:24,952 INFO L93 Difference]: Finished difference Result 114 states and 165 transitions. [2024-11-07 08:31:24,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 08:31:24,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 96 [2024-11-07 08:31:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:31:24,954 INFO L225 Difference]: With dead ends: 114 [2024-11-07 08:31:24,954 INFO L226 Difference]: Without dead ends: 74 [2024-11-07 08:31:24,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 08:31:24,956 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 54 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 147 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 [2024-11-07 08:31:24,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 147 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 08:31:24,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-07 08:31:24,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 43. [2024-11-07 08:31:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-07 08:31:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2024-11-07 08:31:24,967 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 96 [2024-11-07 08:31:24,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:31:24,970 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 60 transitions. [2024-11-07 08:31:24,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-07 08:31:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2024-11-07 08:31:24,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-07 08:31:24,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:31:24,975 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 08:31:24,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 08:31:24,975 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:31:24,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:31:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1977893078, now seen corresponding path program 1 times [2024-11-07 08:31:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:31:24,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976127944] [2024-11-07 08:31:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:31:24,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:31:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:31:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 08:31:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:31:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 08:31:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:31:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 08:31:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:31:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-07 08:31:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:31:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 08:31:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:31:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 08:31:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:31:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-07 08:31:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:31:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-07 08:31:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:31:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976127944] [2024-11-07 08:31:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976127944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 08:31:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968116674] [2024-11-07 08:31:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:31:27,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 08:31:27,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 08:31:27,233 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) [2024-11-07 08:31:27,234 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 [2024-11-07 08:31:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:31:27,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-07 08:31:27,337 INFO L278 TraceCheckSpWp]: Computing forward predicates...