./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/rule60_list.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/rule60_list.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 057ace51c51df31e3d76df060fee6a035219068ccdea21d39f1ea3a0064d5b3d --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 13:57:00,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 13:57:00,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 13:57:00,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 13:57:00,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 13:57:00,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 13:57:00,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 13:57:00,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 13:57:00,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 13:57:00,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 13:57:00,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 13:57:00,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 13:57:00,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 13:57:00,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 13:57:00,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 13:57:00,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 13:57:00,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 13:57:00,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 13:57:00,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 13:57:00,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 13:57:00,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 13:57:00,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 13:57:00,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 13:57:00,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 13:57:00,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 13:57:00,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 13:57:00,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 13:57:00,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 13:57:00,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 13:57:00,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 13:57:00,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 13:57:00,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 13:57:00,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 13:57:00,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 13:57:00,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 13:57:00,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 13:57:00,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 13:57:00,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 13:57:00,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 13:57:00,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 13:57:00,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 13:57:00,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 13:57:00,901 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 13:57:00,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 13:57:00,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 13:57:00,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 13:57:00,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 13:57:00,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 13:57:00,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 13:57:00,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 13:57:00,902 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 13:57:00,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 13:57:00,903 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 13:57:00,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 13:57:00,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 13:57:00,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 13:57:00,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 13:57:00,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 13:57:00,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 13:57:00,904 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 13:57:00,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 13:57:00,904 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 13:57:00,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 13:57:00,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 13:57:00,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 13:57:00,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 13:57:00,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:57:00,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 13:57:00,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 13:57:00,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 13:57:00,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 13:57:00,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 13:57:00,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 13:57:00,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 13:57:00,906 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 13:57:00,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 13:57:00,906 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 13:57:00,906 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 057ace51c51df31e3d76df060fee6a035219068ccdea21d39f1ea3a0064d5b3d [2023-02-18 13:57:01,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 13:57:01,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 13:57:01,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 13:57:01,109 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 13:57:01,109 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 13:57:01,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/rule60_list.i [2023-02-18 13:57:02,065 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 13:57:02,251 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 13:57:02,251 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list.i [2023-02-18 13:57:02,261 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ed8d779/567ea41344734f4f8aa043438d794b0b/FLAGe182bc804 [2023-02-18 13:57:02,270 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ed8d779/567ea41344734f4f8aa043438d794b0b [2023-02-18 13:57:02,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 13:57:02,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 13:57:02,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 13:57:02,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 13:57:02,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 13:57:02,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f3b5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02, skipping insertion in model container [2023-02-18 13:57:02,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 13:57:02,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 13:57:02,411 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list.i[291,304] [2023-02-18 13:57:02,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:57:02,507 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 13:57:02,515 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list.i[291,304] [2023-02-18 13:57:02,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:57:02,558 INFO L208 MainTranslator]: Completed translation [2023-02-18 13:57:02,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02 WrapperNode [2023-02-18 13:57:02,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 13:57:02,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 13:57:02,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 13:57:02,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 13:57:02,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,588 INFO L138 Inliner]: procedures = 124, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2023-02-18 13:57:02,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 13:57:02,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 13:57:02,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 13:57:02,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 13:57:02,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,605 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 13:57:02,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 13:57:02,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 13:57:02,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 13:57:02,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (1/1) ... [2023-02-18 13:57:02,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:57:02,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:57:02,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 13:57:02,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 13:57:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 13:57:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 13:57:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 13:57:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 13:57:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-02-18 13:57:02,659 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-02-18 13:57:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-18 13:57:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2023-02-18 13:57:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2023-02-18 13:57:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 13:57:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 13:57:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 13:57:02,736 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 13:57:02,741 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 13:57:02,828 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 13:57:02,832 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 13:57:02,832 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 13:57:02,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:57:02 BoogieIcfgContainer [2023-02-18 13:57:02,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 13:57:02,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 13:57:02,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 13:57:02,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 13:57:02,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:57:02" (1/3) ... [2023-02-18 13:57:02,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8fe8ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:57:02, skipping insertion in model container [2023-02-18 13:57:02,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:57:02" (2/3) ... [2023-02-18 13:57:02,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8fe8ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:57:02, skipping insertion in model container [2023-02-18 13:57:02,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:57:02" (3/3) ... [2023-02-18 13:57:02,840 INFO L112 eAbstractionObserver]: Analyzing ICFG rule60_list.i [2023-02-18 13:57:02,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 13:57:02,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 13:57:02,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 13:57:02,883 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6c351699, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 13:57:02,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 13:57:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.25) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 13:57:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 13:57:02,891 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:57:02,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:57:02,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:57:02,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:57:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash 355091842, now seen corresponding path program 1 times [2023-02-18 13:57:02,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:57:02,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770954118] [2023-02-18 13:57:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:57:02,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:57:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:57:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:57:03,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:57:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770954118] [2023-02-18 13:57:03,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770954118] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:57:03,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:57:03,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 13:57:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563119530] [2023-02-18 13:57:03,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:57:03,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 13:57:03,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:57:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 13:57:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-18 13:57:03,378 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.25) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:57:03,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:57:03,476 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2023-02-18 13:57:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 13:57:03,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-18 13:57:03,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:57:03,484 INFO L225 Difference]: With dead ends: 45 [2023-02-18 13:57:03,484 INFO L226 Difference]: Without dead ends: 20 [2023-02-18 13:57:03,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-02-18 13:57:03,489 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 13:57:03,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 51 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 13:57:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-18 13:57:03,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-18 13:57:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 13:57:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2023-02-18 13:57:03,510 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 8 [2023-02-18 13:57:03,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:57:03,511 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2023-02-18 13:57:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:57:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2023-02-18 13:57:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 13:57:03,511 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:57:03,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:57:03,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 13:57:03,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:57:03,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:57:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash -95432144, now seen corresponding path program 1 times [2023-02-18 13:57:03,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:57:03,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329510899] [2023-02-18 13:57:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:57:03,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:57:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:57:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 13:57:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:57:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:57:03,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:57:03,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329510899] [2023-02-18 13:57:03,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329510899] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:57:03,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:57:03,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 13:57:03,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139050125] [2023-02-18 13:57:03,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:57:03,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 13:57:03,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:57:03,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 13:57:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-02-18 13:57:03,736 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 13:57:03,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:57:03,824 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2023-02-18 13:57:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 13:57:03,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-18 13:57:03,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:57:03,826 INFO L225 Difference]: With dead ends: 22 [2023-02-18 13:57:03,826 INFO L226 Difference]: Without dead ends: 19 [2023-02-18 13:57:03,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-18 13:57:03,831 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 13:57:03,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 34 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:57:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-18 13:57:03,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-18 13:57:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 13:57:03,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2023-02-18 13:57:03,842 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 13 [2023-02-18 13:57:03,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:57:03,844 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2023-02-18 13:57:03,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 13:57:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2023-02-18 13:57:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 13:57:03,848 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:57:03,848 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:57:03,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 13:57:03,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:57:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:57:03,849 INFO L85 PathProgramCache]: Analyzing trace with hash 101146340, now seen corresponding path program 1 times [2023-02-18 13:57:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:57:03,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119209692] [2023-02-18 13:57:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:57:03,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:57:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:57:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 13:57:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:57:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:57:04,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:57:04,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119209692] [2023-02-18 13:57:04,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119209692] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 13:57:04,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222470416] [2023-02-18 13:57:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:57:04,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:57:04,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:57:04,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 13:57:04,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 13:57:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:57:04,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 13:57:04,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:57:04,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 13:57:04,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-02-18 13:57:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:57:04,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 13:57:04,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222470416] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:57:04,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 13:57:04,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2023-02-18 13:57:04,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698823595] [2023-02-18 13:57:04,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:57:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 13:57:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:57:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 13:57:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-02-18 13:57:04,201 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 13:57:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:57:04,232 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2023-02-18 13:57:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 13:57:04,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-18 13:57:04,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:57:04,233 INFO L225 Difference]: With dead ends: 19 [2023-02-18 13:57:04,233 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 13:57:04,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-02-18 13:57:04,235 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 13:57:04,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:57:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 13:57:04,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 13:57:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:57:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 13:57:04,238 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2023-02-18 13:57:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:57:04,238 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 13:57:04,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 13:57:04,239 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 13:57:04,239 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 13:57:04,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 13:57:04,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 13:57:04,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:57:04,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 13:57:04,459 INFO L899 garLoopResultBuilder]: For program point L523(line 523) no Hoare annotation was computed. [2023-02-18 13:57:04,459 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 522 525) the Hoare annotation is: (let ((.cse4 (<= |~#head~0.offset| 0)) (.cse3 (select |#memory_int| |list_add_#in~new.base|)) (.cse11 (select |old(#memory_int)| |list_add_#in~new.base|)) (.cse12 (+ 8 |list_add_#in~new.offset|)) (.cse7 (<= 0 |~#head~0.offset|))) (let ((.cse1 (not .cse7)) (.cse9 (not (= (select .cse11 .cse12) 0))) (.cse2 (= |#memory_int| |old(#memory_int)|)) (.cse5 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse6 (= (select .cse3 .cse12) 0)) (.cse8 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse10 (not .cse4))) (and (let ((.cse0 (= |list_add_#in~new.offset| 0))) (or (not .cse0) .cse1 (and .cse2 (= (select .cse3 8) 0) .cse4 .cse0 .cse5 .cse6 .cse7 .cse8) .cse9 .cse10 (not (= (select .cse11 8) 0)))) (or .cse1 .cse9 (and .cse2 .cse4 .cse5 .cse6 .cse7 .cse8) .cse10)))) [2023-02-18 13:57:04,459 INFO L895 garLoopResultBuilder]: At program point L523-2(line 523) the Hoare annotation is: (let ((.cse3 (select |old(#memory_int)| |list_add_#in~new.base|))) (let ((.cse0 (not (<= 0 |~#head~0.offset|))) (.cse1 (not (= (select .cse3 (+ 8 |list_add_#in~new.offset|)) 0))) (.cse2 (not (<= |~#head~0.offset| 0)))) (and (or (not (= |list_add_#in~new.offset| 0)) .cse0 .cse1 .cse2 (not (= (select .cse3 8) 0))) (or .cse0 .cse1 .cse2)))) [2023-02-18 13:57:04,460 INFO L899 garLoopResultBuilder]: For program point L523-3(line 523) no Hoare annotation was computed. [2023-02-18 13:57:04,460 INFO L899 garLoopResultBuilder]: For program point list_addFINAL(lines 522 525) no Hoare annotation was computed. [2023-02-18 13:57:04,460 INFO L899 garLoopResultBuilder]: For program point list_addEXIT(lines 522 525) no Hoare annotation was computed. [2023-02-18 13:57:04,460 INFO L899 garLoopResultBuilder]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2023-02-18 13:57:04,460 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 4 7) the Hoare annotation is: true [2023-02-18 13:57:04,460 INFO L899 garLoopResultBuilder]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2023-02-18 13:57:04,460 INFO L899 garLoopResultBuilder]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2023-02-18 13:57:04,460 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 13:57:04,460 INFO L899 garLoopResultBuilder]: For program point L527(line 527) no Hoare annotation was computed. [2023-02-18 13:57:04,460 INFO L895 garLoopResultBuilder]: At program point L527-2(line 527) the Hoare annotation is: false [2023-02-18 13:57:04,460 INFO L899 garLoopResultBuilder]: For program point L527-3(line 527) no Hoare annotation was computed. [2023-02-18 13:57:04,460 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 13:57:04,460 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 531 541) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~dev~0#1.offset| 0)) (.cse4 (<= |~#head~0.offset| 0)) (.cse3 (<= 0 |~#head~0.offset|)) (.cse6 (= (+ |~#head~0.offset| 8) (+ |ULTIMATE.start_main_~dev~0#1.offset| 8)))) (and (or (let ((.cse1 (* (- 1) |ULTIMATE.start_main_~dev~0#1.offset|))) (let ((.cse5 (+ |~#head~0.offset| .cse1))) (let ((.cse2 (<= .cse5 0))) (and .cse0 (or (not (<= (+ |~#head~0.offset| .cse1 1) 0)) (not .cse2) .cse3) (or .cse2 .cse4) (not (= .cse5 0)))))) .cse6) (or (and .cse0 .cse4 .cse3) (not .cse6)))) [2023-02-18 13:57:04,461 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 13:57:04,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 13:57:04,461 INFO L895 garLoopResultBuilder]: At program point L538(line 538) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~dev~0#1.offset| 0)) (.cse1 (<= |~#head~0.offset| 0)) (.cse4 (<= 0 |~#head~0.offset|)) (.cse6 (= (+ |~#head~0.offset| 8) (+ |ULTIMATE.start_main_~dev~0#1.offset| 8)))) (and .cse0 .cse1 (= (select (select |#memory_int| |ULTIMATE.start_main_~dev~0#1.base|) (+ 8 |ULTIMATE.start_main_~dev~0#1.offset|)) 0) (or (let ((.cse2 (* (- 1) |ULTIMATE.start_main_~dev~0#1.offset|))) (let ((.cse5 (+ |~#head~0.offset| .cse2))) (let ((.cse3 (<= .cse5 0))) (and .cse0 (or (not (<= (+ |~#head~0.offset| .cse2 1) 0)) (not .cse3) .cse4) (or .cse3 .cse1) (not (= .cse5 0)))))) .cse6) (= |ULTIMATE.start_list_del_~entry#1.offset| |ULTIMATE.start_main_~dev~0#1.offset|) .cse4 (or (and .cse0 .cse1 .cse4) (not .cse6)) (= |ULTIMATE.start_list_del_~entry#1.base| |ULTIMATE.start_main_~dev~0#1.base|))) [2023-02-18 13:57:04,461 INFO L895 garLoopResultBuilder]: At program point L536(line 536) the Hoare annotation is: (let ((.cse3 (+ |ULTIMATE.start_main_~dev~0#1.offset| 8))) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~dev~0#1.base|)) (.cse0 (= |ULTIMATE.start_main_~dev~0#1.offset| 0)) (.cse1 (<= |~#head~0.offset| 0)) (.cse5 (= (+ |~#head~0.offset| 8) .cse3)) (.cse4 (<= 0 |~#head~0.offset|))) (and .cse0 .cse1 (= (select .cse2 (+ 8 |ULTIMATE.start_main_~dev~0#1.offset|)) 0) (or (and .cse0 .cse1 (= (select .cse2 .cse3) 0) .cse4) (not .cse5)) (or (let ((.cse6 (* (- 1) |ULTIMATE.start_main_~dev~0#1.offset|))) (let ((.cse8 (+ |~#head~0.offset| .cse6))) (let ((.cse7 (<= .cse8 0))) (and .cse0 (or (not (<= (+ |~#head~0.offset| .cse6 1) 0)) (not .cse7) .cse4) (or .cse7 .cse1) (not (= .cse8 0)))))) .cse5) .cse4))) [2023-02-18 13:57:04,461 INFO L899 garLoopResultBuilder]: For program point L536-1(line 536) no Hoare annotation was computed. [2023-02-18 13:57:04,461 INFO L899 garLoopResultBuilder]: For program point L534(lines 534 539) no Hoare annotation was computed. [2023-02-18 13:57:04,461 INFO L899 garLoopResultBuilder]: For program point L534-1(lines 534 539) no Hoare annotation was computed. [2023-02-18 13:57:04,461 INFO L899 garLoopResultBuilder]: For program point L526(lines 526 529) no Hoare annotation was computed. [2023-02-18 13:57:04,463 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-18 13:57:04,464 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 13:57:04,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 01:57:04 BoogieIcfgContainer [2023-02-18 13:57:04,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 13:57:04,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 13:57:04,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 13:57:04,482 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 13:57:04,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:57:02" (3/4) ... [2023-02-18 13:57:04,485 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 13:57:04,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure list_add [2023-02-18 13:57:04,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __blast_assert [2023-02-18 13:57:04,492 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-18 13:57:04,492 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-02-18 13:57:04,492 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 13:57:04,492 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 13:57:04,518 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 13:57:04,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 13:57:04,519 INFO L158 Benchmark]: Toolchain (without parser) took 2246.10ms. Allocated memory was 144.7MB in the beginning and 195.0MB in the end (delta: 50.3MB). Free memory was 104.7MB in the beginning and 84.1MB in the end (delta: 20.6MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. [2023-02-18 13:57:04,519 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 13:57:04,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.63ms. Allocated memory is still 144.7MB. Free memory was 104.7MB in the beginning and 88.6MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-02-18 13:57:04,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.50ms. Allocated memory is still 144.7MB. Free memory was 87.9MB in the beginning and 86.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 13:57:04,519 INFO L158 Benchmark]: Boogie Preprocessor took 17.91ms. Allocated memory is still 144.7MB. Free memory was 86.5MB in the beginning and 85.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 13:57:04,519 INFO L158 Benchmark]: RCFGBuilder took 226.32ms. Allocated memory is still 144.7MB. Free memory was 85.1MB in the beginning and 73.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 13:57:04,519 INFO L158 Benchmark]: TraceAbstraction took 1645.73ms. Allocated memory was 144.7MB in the beginning and 195.0MB in the end (delta: 50.3MB). Free memory was 73.2MB in the beginning and 87.2MB in the end (delta: -14.0MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2023-02-18 13:57:04,520 INFO L158 Benchmark]: Witness Printer took 36.68ms. Allocated memory is still 195.0MB. Free memory was 87.2MB in the beginning and 84.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 13:57:04,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.63ms. Allocated memory is still 144.7MB. Free memory was 104.7MB in the beginning and 88.6MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.50ms. Allocated memory is still 144.7MB. Free memory was 87.9MB in the beginning and 86.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.91ms. Allocated memory is still 144.7MB. Free memory was 86.5MB in the beginning and 85.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 226.32ms. Allocated memory is still 144.7MB. Free memory was 85.1MB in the beginning and 73.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1645.73ms. Allocated memory was 144.7MB in the beginning and 195.0MB in the end (delta: 50.3MB). Free memory was 73.2MB in the beginning and 87.2MB in the end (delta: -14.0MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. * Witness Printer took 36.68ms. Allocated memory is still 195.0MB. Free memory was 87.2MB in the beginning and 84.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 6]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 112 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 131 IncrementalHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 35 mSDtfsCounter, 131 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 14 PreInvPairs, 16 NumberOfFragments, 431 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 615 SizeOfPredicates, 11 NumberOfNonLiveVariables, 162 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 531]: Loop Invariant Derived loop invariant: ((((dev == 0 && ((!(head + -1 * dev + 1 <= 0) || !(head + -1 * dev <= 0)) || 0 <= head)) && (head + -1 * dev <= 0 || head <= 0)) && !(head + -1 * dev == 0)) || head + 8 == dev + 8) && (((dev == 0 && head <= 0) && 0 <= head) || !(head + 8 == dev + 8)) RESULT: Ultimate proved your program to be correct! [2023-02-18 13:57:04,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE