./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/lcp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/verifythis/lcp.c -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 99469a4d9e5d9407366653a2d47248a07b3d0735 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/verifythis/lcp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 99469a4d9e5d9407366653a2d47248a07b3d0735 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 11:48:01,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:48:01,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:48:01,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:48:01,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:48:01,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:48:01,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:48:01,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:48:01,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:48:01,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:48:01,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:48:01,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:48:01,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:48:01,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:48:01,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:48:01,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:48:01,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:48:01,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:48:01,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:48:01,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:48:01,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:48:01,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:48:01,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:48:01,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:48:01,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:48:01,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:48:01,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:48:01,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:48:01,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:48:01,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:48:01,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:48:01,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:48:01,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:48:01,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:48:01,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:48:01,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:48:01,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:48:01,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:48:01,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:48:01,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:48:01,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:48:01,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 11:48:01,607 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:48:01,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:48:01,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:48:01,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:48:01,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:48:01,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:48:01,609 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:48:01,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:48:01,609 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:48:01,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 11:48:01,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:48:01,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:48:01,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:48:01,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:48:01,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:48:01,610 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:48:01,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:48:01,610 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:48:01,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:48:01,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:48:01,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:48:01,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:48:01,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:48:01,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:48:01,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:48:01,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:48:01,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 11:48:01,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 11:48:01,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:48:01,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:48:01,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99469a4d9e5d9407366653a2d47248a07b3d0735 [2021-08-29 11:48:01,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:48:01,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:48:01,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:48:01,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:48:01,968 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:48:01,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/lcp.c [2021-08-29 11:48:02,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af278f80b/c146791d588c43a1942663a1434c156e/FLAG13c988558 [2021-08-29 11:48:02,408 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:48:02,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c [2021-08-29 11:48:02,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af278f80b/c146791d588c43a1942663a1434c156e/FLAG13c988558 [2021-08-29 11:48:02,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af278f80b/c146791d588c43a1942663a1434c156e [2021-08-29 11:48:02,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:48:02,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:48:02,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:48:02,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:48:02,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:48:02,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a513a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02, skipping insertion in model container [2021-08-29 11:48:02,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:48:02,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:48:02,602 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c[515,528] [2021-08-29 11:48:02,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:48:02,700 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:48:02,730 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c[515,528] [2021-08-29 11:48:02,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:48:02,756 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:48:02,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02 WrapperNode [2021-08-29 11:48:02,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:48:02,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:48:02,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:48:02,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:48:02,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:48:02,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:48:02,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:48:02,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:48:02,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:48:02,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:48:02,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:48:02,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:48:02,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (1/1) ... [2021-08-29 11:48:02,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:48:02,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:02,889 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) [2021-08-29 11:48:02,906 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 [2021-08-29 11:48:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 11:48:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:48:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 11:48:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:48:02,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:48:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 11:48:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 11:48:03,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:48:03,136 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-08-29 11:48:03,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:48:03 BoogieIcfgContainer [2021-08-29 11:48:03,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:48:03,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:48:03,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:48:03,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:48:03,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:48:02" (1/3) ... [2021-08-29 11:48:03,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1314be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:48:03, skipping insertion in model container [2021-08-29 11:48:03,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:02" (2/3) ... [2021-08-29 11:48:03,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1314be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:48:03, skipping insertion in model container [2021-08-29 11:48:03,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:48:03" (3/3) ... [2021-08-29 11:48:03,149 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2021-08-29 11:48:03,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:48:03,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 11:48:03,206 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:48:03,210 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 11:48:03,211 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 11:48:03,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2021-08-29 11:48:03,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 11:48:03,248 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:03,249 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:03,249 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:03,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1579702917, now seen corresponding path program 1 times [2021-08-29 11:48:03,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:03,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314885751] [2021-08-29 11:48:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:03,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:03,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:03,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314885751] [2021-08-29 11:48:03,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314885751] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:48:03,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:48:03,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 11:48:03,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622391269] [2021-08-29 11:48:03,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 11:48:03,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:03,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 11:48:03,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:48:03,465 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2021-08-29 11:48:03,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:03,522 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-08-29 11:48:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 11:48:03,525 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) Word has length 14 [2021-08-29 11:48:03,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:03,529 INFO L225 Difference]: With dead ends: 51 [2021-08-29 11:48:03,529 INFO L226 Difference]: Without dead ends: 22 [2021-08-29 11:48:03,531 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:48:03,533 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.17ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:03,534 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.24ms Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 46.17ms Time] [2021-08-29 11:48:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-29 11:48:03,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-29 11:48:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2021-08-29 11:48:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-08-29 11:48:03,552 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-08-29 11:48:03,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:03,553 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-08-29 11:48:03,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2021-08-29 11:48:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-08-29 11:48:03,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 11:48:03,553 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:03,553 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:03,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 11:48:03,554 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:03,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:03,554 INFO L82 PathProgramCache]: Analyzing trace with hash 588290746, now seen corresponding path program 1 times [2021-08-29 11:48:03,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:03,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953937744] [2021-08-29 11:48:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:03,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:03,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:03,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953937744] [2021-08-29 11:48:03,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953937744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:48:03,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:48:03,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 11:48:03,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300103635] [2021-08-29 11:48:03,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 11:48:03,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:03,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 11:48:03,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 11:48:03,680 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-08-29 11:48:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:03,837 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2021-08-29 11:48:03,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 11:48:03,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) Word has length 16 [2021-08-29 11:48:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:03,841 INFO L225 Difference]: With dead ends: 50 [2021-08-29 11:48:03,841 INFO L226 Difference]: Without dead ends: 38 [2021-08-29 11:48:03,842 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.37ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 11:48:03,842 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.01ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.88ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:03,843 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 2.01ms Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 117.88ms Time] [2021-08-29 11:48:03,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-29 11:48:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2021-08-29 11:48:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 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) [2021-08-29 11:48:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-08-29 11:48:03,849 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2021-08-29 11:48:03,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:03,853 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-08-29 11:48:03,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-08-29 11:48:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-08-29 11:48:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 11:48:03,854 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:03,854 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:03,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 11:48:03,855 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:03,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:03,856 INFO L82 PathProgramCache]: Analyzing trace with hash -221055880, now seen corresponding path program 1 times [2021-08-29 11:48:03,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:03,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879288660] [2021-08-29 11:48:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:03,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:03,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:03,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879288660] [2021-08-29 11:48:03,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879288660] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:48:03,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:48:03,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 11:48:03,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496682637] [2021-08-29 11:48:03,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 11:48:03,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:03,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 11:48:03,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 11:48:03,954 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-08-29 11:48:04,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:04,052 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-08-29 11:48:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 11:48:04,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) Word has length 16 [2021-08-29 11:48:04,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:04,054 INFO L225 Difference]: With dead ends: 25 [2021-08-29 11:48:04,054 INFO L226 Difference]: Without dead ends: 23 [2021-08-29 11:48:04,055 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.13ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 11:48:04,057 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.29ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.01ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:04,057 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 62 Unknown, 0 Unchecked, 1.29ms Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 63.01ms Time] [2021-08-29 11:48:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-29 11:48:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-29 11:48:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-08-29 11:48:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-29 11:48:04,063 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 16 [2021-08-29 11:48:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:04,064 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-29 11:48:04,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-08-29 11:48:04,064 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-29 11:48:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 11:48:04,065 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:04,065 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:04,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 11:48:04,065 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:04,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1286954589, now seen corresponding path program 1 times [2021-08-29 11:48:04,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:04,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537042297] [2021-08-29 11:48:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:04,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:04,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:04,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537042297] [2021-08-29 11:48:04,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537042297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:48:04,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:48:04,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 11:48:04,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951930839] [2021-08-29 11:48:04,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 11:48:04,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:04,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 11:48:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-29 11:48:04,279 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-08-29 11:48:04,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:04,471 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-08-29 11:48:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 11:48:04,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) Word has length 19 [2021-08-29 11:48:04,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:04,473 INFO L225 Difference]: With dead ends: 34 [2021-08-29 11:48:04,473 INFO L226 Difference]: Without dead ends: 24 [2021-08-29 11:48:04,473 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 137.57ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-29 11:48:04,474 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.33ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.90ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:04,474 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 132 Unknown, 0 Unchecked, 3.33ms Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 79.90ms Time] [2021-08-29 11:48:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-29 11:48:04,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-08-29 11:48:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-08-29 11:48:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-29 11:48:04,477 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2021-08-29 11:48:04,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:04,477 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-29 11:48:04,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-08-29 11:48:04,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-29 11:48:04,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 11:48:04,477 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:04,477 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:04,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 11:48:04,478 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:04,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:04,478 INFO L82 PathProgramCache]: Analyzing trace with hash 873138096, now seen corresponding path program 1 times [2021-08-29 11:48:04,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:04,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335473830] [2021-08-29 11:48:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:04,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:04,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:04,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335473830] [2021-08-29 11:48:04,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335473830] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:48:04,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111367742] [2021-08-29 11:48:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:04,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:48:04,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:04,568 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) [2021-08-29 11:48:04,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 11:48:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:04,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-29 11:48:04,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:04,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 6 [2021-08-29 11:48:04,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 54 [2021-08-29 11:48:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 11:48:04,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:48:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 11:48:11,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111367742] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:48:11,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:48:11,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2021-08-29 11:48:11,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75148005] [2021-08-29 11:48:11,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-29 11:48:11,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-29 11:48:11,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=67, Unknown=2, NotChecked=0, Total=90 [2021-08-29 11:48:11,012 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-08-29 11:48:11,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:11,105 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-08-29 11:48:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 11:48:11,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) Word has length 22 [2021-08-29 11:48:11,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:11,106 INFO L225 Difference]: With dead ends: 49 [2021-08-29 11:48:11,107 INFO L226 Difference]: Without dead ends: 39 [2021-08-29 11:48:11,107 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6146.62ms TimeCoverageRelationStatistics Valid=56, Invalid=124, Unknown=2, NotChecked=0, Total=182 [2021-08-29 11:48:11,107 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 55.08ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:11,108 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 111 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 43 Unchecked, 55.08ms Time] [2021-08-29 11:48:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-29 11:48:11,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 23. [2021-08-29 11:48:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-08-29 11:48:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-29 11:48:11,111 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 22 [2021-08-29 11:48:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:11,111 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-29 11:48:11,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-08-29 11:48:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-29 11:48:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 11:48:11,112 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:11,112 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:11,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-29 11:48:11,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:48:11,321 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:11,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:11,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1574202674, now seen corresponding path program 1 times [2021-08-29 11:48:11,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:11,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534875913] [2021-08-29 11:48:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:11,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:48:11,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:11,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534875913] [2021-08-29 11:48:11,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534875913] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:48:11,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770246725] [2021-08-29 11:48:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:11,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:48:11,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:11,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:48:11,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 11:48:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:11,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-29 11:48:11,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:48:11,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:48:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:48:11,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770246725] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:48:11,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:48:11,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-08-29 11:48:11,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391725328] [2021-08-29 11:48:11,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 11:48:11,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:11,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 11:48:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-29 11:48:11,936 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-08-29 11:48:12,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:12,040 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-08-29 11:48:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 11:48:12,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) Word has length 22 [2021-08-29 11:48:12,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:12,041 INFO L225 Difference]: With dead ends: 26 [2021-08-29 11:48:12,041 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:48:12,042 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.01ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-08-29 11:48:12,042 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.94ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:12,042 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 49.94ms Time] [2021-08-29 11:48:12,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:48:12,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:48:12,043 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) [2021-08-29 11:48:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:48:12,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-08-29 11:48:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:12,043 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:48:12,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-08-29 11:48:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:48:12,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:48:12,047 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 11:48:12,047 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 11:48:12,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 11:48:12,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-29 11:48:12,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:48:12,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:48:12,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:48:12,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:48:12,299 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-08-29 11:48:12,299 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 11:48:12,300 INFO L861 garLoopResultBuilder]: At program point L48(lines 35 49) the Hoare annotation is: true [2021-08-29 11:48:12,300 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:48:12,300 INFO L858 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-08-29 11:48:12,300 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:48:12,302 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:48:12,302 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 11:48:12,302 INFO L858 garLoopResultBuilder]: For program point L24(lines 24 33) no Hoare annotation was computed. [2021-08-29 11:48:12,302 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 14) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L854 garLoopResultBuilder]: At program point L21(lines 16 22) the Hoare annotation is: (let ((.cse6 ((as const (Array Int Int)) 0))) (let ((.cse0 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_lcp_~n)) (.cse1 (= .cse6 (select |#memory_int| ULTIMATE.start_main_~a~0.base))) (.cse2 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_lcp_~y)) (.cse3 (= ULTIMATE.start_main_~x~0 ULTIMATE.start_lcp_~x)) (.cse4 (or (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_lcp_~l~0)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_lcp_~l~0)))) (.cse5 (= .cse6 (select |#memory_int| |ULTIMATE.start_main_#t~malloc18.base|)))) (or (and .cse0 (= 0 |ULTIMATE.start_lcp_#res|) (= 0 ULTIMATE.start_lcp_~l~0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= .cse6 (select |#memory_int| ULTIMATE.start_lcp_~a.base)) (or (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~x~0 |ULTIMATE.start_lcp_#res|)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~y~0 |ULTIMATE.start_lcp_#res|))) .cse1 .cse2 .cse3 .cse4 .cse5)))) [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L5(lines 5 7) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L5-1(lines 5 7) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L5-2(lines 5 7) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L854 garLoopResultBuilder]: At program point L18-5(lines 18 20) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= ULTIMATE.start_main_~n~0 ULTIMATE.start_lcp_~n) (= .cse0 (select |#memory_int| ULTIMATE.start_lcp_~a.base)) (= .cse0 (select |#memory_int| ULTIMATE.start_main_~a~0.base)) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_lcp_~y) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_lcp_~x) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc18.base|)))) [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-08-29 11:48:12,303 INFO L858 garLoopResultBuilder]: For program point L6-2(line 6) no Hoare annotation was computed. [2021-08-29 11:48:12,304 INFO L858 garLoopResultBuilder]: For program point L6-4(line 6) no Hoare annotation was computed. [2021-08-29 11:48:12,307 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:48:12,310 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-29 11:48:12,314 INFO L158 Benchmark]: Toolchain (without parser) took 9884.20ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 37.4MB in the beginning and 38.0MB in the end (delta: -635.8kB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-08-29 11:48:12,314 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 44.0MB. Free memory was 26.6MB in the beginning and 26.5MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:48:12,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.22ms. Allocated memory is still 54.5MB. Free memory was 37.3MB in the beginning and 36.9MB in the end (delta: 399.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 11:48:12,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.23ms. Allocated memory is still 54.5MB. Free memory was 36.9MB in the beginning and 35.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 11:48:12,314 INFO L158 Benchmark]: Boogie Preprocessor took 49.59ms. Allocated memory is still 54.5MB. Free memory was 34.9MB in the beginning and 33.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:48:12,315 INFO L158 Benchmark]: RCFGBuilder took 284.19ms. Allocated memory is still 54.5MB. Free memory was 33.5MB in the beginning and 34.3MB in the end (delta: -806.4kB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2021-08-29 11:48:12,315 INFO L158 Benchmark]: TraceAbstraction took 9173.28ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.9MB in the beginning and 38.0MB in the end (delta: -4.1MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-08-29 11:48:12,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 44.0MB. Free memory was 26.6MB in the beginning and 26.5MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.22ms. Allocated memory is still 54.5MB. Free memory was 37.3MB in the beginning and 36.9MB in the end (delta: 399.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.23ms. Allocated memory is still 54.5MB. Free memory was 36.9MB in the beginning and 35.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.59ms. Allocated memory is still 54.5MB. Free memory was 34.9MB in the beginning and 33.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.19ms. Allocated memory is still 54.5MB. Free memory was 33.5MB in the beginning and 34.3MB in the end (delta: -806.4kB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9173.28ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.9MB in the beginning and 38.0MB in the end (delta: -4.1MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 9103.30ms, OverallIterations: 6, TraceHistogramMax: 2, EmptinessCheckTime: 18.17ms, AutomataDifference: 760.86ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 50.25ms, InitialAbstractionConstructionTime: 21.33ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 255 SdHoareTripleChecker+Valid, 411.99ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 255 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 275.87ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 43 IncrementalHoareTripleChecker+Unchecked, 180 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 447 IncrementalHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 0 mSDtfsCounter, 447 mSolverCounterSat, 8.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 6471.75ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 23.99ms AutomataMinimizationTime, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 119 HoareAnnotationTreeSize, 3 FomulaSimplifications, 209 FormulaSimplificationTreeSizeReduction, 11.20ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 34.31ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 68.41ms SsaConstructionTime, 210.38ms SatisfiabilityAnalysisTime, 7290.93ms InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 187 ConstructedInterpolants, 8 QuantifiedInterpolants, 1263 SizeOfPredicates, 37 NumberOfNonLiveVariables, 371 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 7/18 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 2 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-08-29 11:48:12,352 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... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 11:48:14,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:48:14,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:48:14,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:48:14,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:48:14,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:48:14,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:48:14,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:48:14,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:48:14,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:48:14,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:48:14,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:48:14,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:48:14,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:48:14,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:48:14,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:48:14,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:48:14,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:48:14,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:48:14,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:48:14,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:48:14,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:48:14,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:48:14,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:48:14,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:48:14,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:48:14,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:48:14,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:48:14,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:48:14,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:48:14,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:48:14,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:48:14,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:48:14,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:48:14,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:48:14,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:48:14,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:48:14,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:48:14,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:48:14,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:48:14,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:48:14,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 11:48:14,843 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:48:14,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:48:14,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:48:14,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:48:14,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:48:14,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:48:14,846 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:48:14,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:48:14,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:48:14,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:48:14,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:48:14,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:48:14,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:48:14,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:48:14,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 11:48:14,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 11:48:14,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:48:14,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:48:14,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:48:14,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:48:14,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:48:14,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:48:14,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:48:14,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:48:14,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:48:14,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:48:14,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:48:14,849 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 11:48:14,850 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 11:48:14,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:48:14,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:48:14,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 11:48:14,850 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99469a4d9e5d9407366653a2d47248a07b3d0735 [2021-08-29 11:48:15,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:48:15,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:48:15,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:48:15,167 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:48:15,167 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:48:15,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/lcp.c [2021-08-29 11:48:15,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c81865c/2560496184174034a05034e9d48ccb64/FLAG0e9292e0f [2021-08-29 11:48:15,578 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:48:15,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c [2021-08-29 11:48:15,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c81865c/2560496184174034a05034e9d48ccb64/FLAG0e9292e0f [2021-08-29 11:48:15,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c81865c/2560496184174034a05034e9d48ccb64 [2021-08-29 11:48:15,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:48:15,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:48:16,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:48:16,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:48:16,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:48:16,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:48:15" (1/1) ... [2021-08-29 11:48:16,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84418de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16, skipping insertion in model container [2021-08-29 11:48:16,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:48:15" (1/1) ... [2021-08-29 11:48:16,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:48:16,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:48:16,110 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c[515,528] [2021-08-29 11:48:16,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:48:16,148 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:48:16,161 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c[515,528] [2021-08-29 11:48:16,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:48:16,224 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:48:16,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16 WrapperNode [2021-08-29 11:48:16,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:48:16,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:48:16,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:48:16,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:48:16,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (1/1) ... [2021-08-29 11:48:16,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (1/1) ... [2021-08-29 11:48:16,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:48:16,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:48:16,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:48:16,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:48:16,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (1/1) ... [2021-08-29 11:48:16,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (1/1) ... [2021-08-29 11:48:16,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (1/1) ... [2021-08-29 11:48:16,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (1/1) ... [2021-08-29 11:48:16,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (1/1) ... [2021-08-29 11:48:16,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (1/1) ... [2021-08-29 11:48:16,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (1/1) ... [2021-08-29 11:48:16,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:48:16,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:48:16,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:48:16,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:48:16,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (1/1) ... [2021-08-29 11:48:16,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:48:16,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:16,342 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) [2021-08-29 11:48:16,360 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 [2021-08-29 11:48:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 11:48:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:48:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 11:48:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-29 11:48:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:48:16,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:48:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 11:48:16,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:48:16,510 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-08-29 11:48:16,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:48:16 BoogieIcfgContainer [2021-08-29 11:48:16,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:48:16,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:48:16,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:48:16,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:48:16,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:48:15" (1/3) ... [2021-08-29 11:48:16,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe5bb45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:48:16, skipping insertion in model container [2021-08-29 11:48:16,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:16" (2/3) ... [2021-08-29 11:48:16,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe5bb45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:48:16, skipping insertion in model container [2021-08-29 11:48:16,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:48:16" (3/3) ... [2021-08-29 11:48:16,516 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2021-08-29 11:48:16,519 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:48:16,519 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 11:48:16,550 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:48:16,554 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 11:48:16,554 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 11:48:16,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2021-08-29 11:48:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 11:48:16,565 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:16,565 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:16,565 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:16,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:16,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1579702917, now seen corresponding path program 1 times [2021-08-29 11:48:16,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 11:48:16,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211143258] [2021-08-29 11:48:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:16,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 11:48:16,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 11:48:16,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 11:48:16,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 11:48:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:16,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 11:48:16,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:16,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:48:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:16,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 11:48:16,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211143258] [2021-08-29 11:48:16,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211143258] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 11:48:16,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:48:16,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 11:48:16,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543225065] [2021-08-29 11:48:16,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 11:48:16,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 11:48:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 11:48:16,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:48:16,833 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2021-08-29 11:48:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:16,904 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-08-29 11:48:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 11:48:16,906 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) Word has length 14 [2021-08-29 11:48:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:16,911 INFO L225 Difference]: With dead ends: 51 [2021-08-29 11:48:16,911 INFO L226 Difference]: Without dead ends: 22 [2021-08-29 11:48:16,913 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.08ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:48:16,917 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.22ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:16,917 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.29ms Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 57.22ms Time] [2021-08-29 11:48:16,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-29 11:48:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-29 11:48:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2021-08-29 11:48:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-08-29 11:48:16,935 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-08-29 11:48:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:16,936 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-08-29 11:48:16,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2021-08-29 11:48:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-08-29 11:48:16,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 11:48:16,936 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:16,936 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:16,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-29 11:48:17,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 11:48:17,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:17,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:17,142 INFO L82 PathProgramCache]: Analyzing trace with hash 588290746, now seen corresponding path program 1 times [2021-08-29 11:48:17,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 11:48:17,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888800721] [2021-08-29 11:48:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:17,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 11:48:17,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 11:48:17,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 11:48:17,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 11:48:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:17,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 11:48:17,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:17,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:48:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:17,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 11:48:17,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888800721] [2021-08-29 11:48:17,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888800721] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 11:48:17,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:48:17,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-08-29 11:48:17,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445854660] [2021-08-29 11:48:17,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 11:48:17,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 11:48:17,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 11:48:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-29 11:48:17,421 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-08-29 11:48:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:17,558 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-08-29 11:48:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 11:48:17,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) Word has length 16 [2021-08-29 11:48:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:17,559 INFO L225 Difference]: With dead ends: 37 [2021-08-29 11:48:17,559 INFO L226 Difference]: Without dead ends: 25 [2021-08-29 11:48:17,559 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.77ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 11:48:17,560 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.69ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:17,560 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 136 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 108.69ms Time] [2021-08-29 11:48:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-29 11:48:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-08-29 11:48:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 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) [2021-08-29 11:48:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-08-29 11:48:17,564 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2021-08-29 11:48:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:17,564 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-08-29 11:48:17,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-08-29 11:48:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-08-29 11:48:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 11:48:17,564 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:17,565 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:17,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 11:48:17,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 11:48:17,765 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:17,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:17,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1407848843, now seen corresponding path program 1 times [2021-08-29 11:48:17,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 11:48:17,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080766237] [2021-08-29 11:48:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:17,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 11:48:17,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 11:48:17,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 11:48:17,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 11:48:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:17,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-29 11:48:17,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:18,303 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-08-29 11:48:18,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 32 [2021-08-29 11:48:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:18,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:48:31,696 INFO L354 Elim1Store]: treesize reduction 37, result has 74.5 percent of original size [2021-08-29 11:48:31,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 125 [2021-08-29 11:48:31,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 11:48:31,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080766237] [2021-08-29 11:48:31,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-08-29 11:48:31,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [750409147] [2021-08-29 11:48:31,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:31,834 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-29 11:48:31,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-29 11:48:31,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-29 11:48:31,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-08-29 11:48:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:32,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 11:48:32,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:32,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 6 [2021-08-29 11:48:32,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 54 [2021-08-29 11:48:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 11:48:32,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:49:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 11:49:03,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [750409147] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:49:03,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 11:49:03,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-29 11:49:03,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541753713] [2021-08-29 11:49:03,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 11:49:03,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 11:49:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 11:49:03,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=473, Unknown=20, NotChecked=0, Total=552 [2021-08-29 11:49:03,676 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-08-29 11:49:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:49:03,856 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-08-29 11:49:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 11:49:03,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) Word has length 19 [2021-08-29 11:49:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:49:03,858 INFO L225 Difference]: With dead ends: 39 [2021-08-29 11:49:03,858 INFO L226 Difference]: Without dead ends: 27 [2021-08-29 11:49:03,859 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 43988.25ms TimeCoverageRelationStatistics Valid=117, Invalid=675, Unknown=20, NotChecked=0, Total=812 [2021-08-29 11:49:03,860 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 70.34ms IncrementalHoareTripleChecker+Time [2021-08-29 11:49:03,861 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 89 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 29 Unchecked, 70.34ms Time] [2021-08-29 11:49:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-29 11:49:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-08-29 11:49:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 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) [2021-08-29 11:49:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-08-29 11:49:03,866 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2021-08-29 11:49:03,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:49:03,866 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-08-29 11:49:03,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-08-29 11:49:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-08-29 11:49:03,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 11:49:03,867 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:49:03,867 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:49:03,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-08-29 11:49:04,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-29 11:49:04,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 11:49:04,270 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:49:04,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:49:04,271 INFO L82 PathProgramCache]: Analyzing trace with hash 598502217, now seen corresponding path program 1 times [2021-08-29 11:49:04,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 11:49:04,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124301542] [2021-08-29 11:49:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:49:04,271 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 11:49:04,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 11:49:04,272 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 11:49:04,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-29 11:49:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:49:04,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-29 11:49:04,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:49:04,801 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-08-29 11:49:04,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 32 [2021-08-29 11:49:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:49:04,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:49:17,995 INFO L354 Elim1Store]: treesize reduction 37, result has 74.5 percent of original size [2021-08-29 11:49:17,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 125 [2021-08-29 11:49:18,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 11:49:18,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124301542] [2021-08-29 11:49:18,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-08-29 11:49:18,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1597977151] [2021-08-29 11:49:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:49:18,149 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-29 11:49:18,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-29 11:49:18,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-29 11:49:18,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-08-29 11:49:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:49:19,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-29 11:49:19,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:49:19,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 6 [2021-08-29 11:49:19,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 57 [2021-08-29 11:49:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-29 11:49:19,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:49:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-29 11:49:43,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1597977151] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 11:49:43,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:49:43,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-29 11:49:43,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883504151] [2021-08-29 11:49:43,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-29 11:49:43,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 11:49:43,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-29 11:49:43,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=427, Unknown=18, NotChecked=0, Total=506 [2021-08-29 11:49:43,820 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-08-29 11:49:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:49:43,952 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-08-29 11:49:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 11:49:43,952 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) Word has length 19 [2021-08-29 11:49:43,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:49:43,953 INFO L225 Difference]: With dead ends: 25 [2021-08-29 11:49:43,953 INFO L226 Difference]: Without dead ends: 23 [2021-08-29 11:49:43,954 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 37468.98ms TimeCoverageRelationStatistics Valid=111, Invalid=573, Unknown=18, NotChecked=0, Total=702 [2021-08-29 11:49:43,954 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 70.51ms IncrementalHoareTripleChecker+Time [2021-08-29 11:49:43,954 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 98 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 23 Unchecked, 70.51ms Time] [2021-08-29 11:49:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-29 11:49:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-29 11:49:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-08-29 11:49:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-29 11:49:43,958 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2021-08-29 11:49:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:49:43,958 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-29 11:49:43,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-08-29 11:49:43,958 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-29 11:49:43,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 11:49:43,959 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:49:43,959 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:49:43,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-08-29 11:49:44,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-29 11:49:44,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 11:49:44,361 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:49:44,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:49:44,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1574202674, now seen corresponding path program 1 times [2021-08-29 11:49:44,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 11:49:44,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553837806] [2021-08-29 11:49:44,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:49:44,363 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 11:49:44,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 11:49:44,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 11:49:44,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-29 11:49:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:49:44,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-29 11:49:44,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:49:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:49:45,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:49:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:49:46,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 11:49:46,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553837806] [2021-08-29 11:49:46,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553837806] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:49:46,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 11:49:46,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2021-08-29 11:49:46,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603373819] [2021-08-29 11:49:46,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-29 11:49:46,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 11:49:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-29 11:49:46,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-08-29 11:49:46,955 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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) [2021-08-29 11:49:55,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 11:49:57,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:49:57,067 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2021-08-29 11:49:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-29 11:49:57,068 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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) Word has length 22 [2021-08-29 11:49:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:49:57,069 INFO L225 Difference]: With dead ends: 72 [2021-08-29 11:49:57,069 INFO L226 Difference]: Without dead ends: 35 [2021-08-29 11:49:57,070 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 8309.95ms TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2021-08-29 11:49:57,070 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 198 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 92 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3182.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.28ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3329.43ms IncrementalHoareTripleChecker+Time [2021-08-29 11:49:57,070 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 0 Invalid, 442 Unknown, 0 Unchecked, 4.28ms Time], IncrementalHoareTripleChecker [92 Valid, 349 Invalid, 1 Unknown, 0 Unchecked, 3329.43ms Time] [2021-08-29 11:49:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-29 11:49:57,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-08-29 11:49:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 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) [2021-08-29 11:49:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-08-29 11:49:57,074 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2021-08-29 11:49:57,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:49:57,074 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-08-29 11:49:57,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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) [2021-08-29 11:49:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-08-29 11:49:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-29 11:49:57,074 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:49:57,074 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:49:57,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-29 11:49:57,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 11:49:57,287 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:49:57,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:49:57,295 INFO L82 PathProgramCache]: Analyzing trace with hash -437965597, now seen corresponding path program 2 times [2021-08-29 11:49:57,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 11:49:57,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722297955] [2021-08-29 11:49:57,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 11:49:57,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 11:49:57,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 11:49:57,297 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 11:49:57,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-29 11:49:57,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-29 11:49:57,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 11:49:57,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-29 11:49:57,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:49:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-29 11:49:58,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:49:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-29 11:49:59,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 11:49:59,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722297955] [2021-08-29 11:49:59,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722297955] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:49:59,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 11:49:59,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2021-08-29 11:49:59,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876350323] [2021-08-29 11:49:59,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-29 11:49:59,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 11:49:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-29 11:49:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-08-29 11:49:59,886 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 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) [2021-08-29 11:50:01,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:50:01,558 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-08-29 11:50:01,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-29 11:50:01,559 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 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) Word has length 31 [2021-08-29 11:50:01,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:50:01,559 INFO L225 Difference]: With dead ends: 47 [2021-08-29 11:50:01,559 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:50:01,560 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2077.40ms TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2021-08-29 11:50:01,560 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 201.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.90ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 228.47ms IncrementalHoareTripleChecker+Time [2021-08-29 11:50:01,561 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 145 Unknown, 0 Unchecked, 0.90ms Time], IncrementalHoareTripleChecker [24 Valid, 108 Invalid, 0 Unknown, 13 Unchecked, 228.47ms Time] [2021-08-29 11:50:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:50:01,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:50:01,561 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) [2021-08-29 11:50:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:50:01,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-08-29 11:50:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:50:01,561 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:50:01,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 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) [2021-08-29 11:50:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:50:01,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:50:01,564 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 11:50:01,564 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 11:50:01,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-29 11:50:01,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 11:50:01,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:50:01,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:50:01,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:50:01,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:50:02,495 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-08-29 11:50:02,495 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 11:50:02,495 INFO L861 garLoopResultBuilder]: At program point L48(lines 35 49) the Hoare annotation is: true [2021-08-29 11:50:02,495 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:50:02,495 INFO L858 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-08-29 11:50:02,495 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:50:02,495 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:50:02,495 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L24(lines 24 33) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 14) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L854 garLoopResultBuilder]: At program point L21(lines 16 22) the Hoare annotation is: (or (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (bvslt ULTIMATE.start_main_~n~0 (_ bv1073741824 32)) (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32)) (= .cse0 (select |#memory_int| ULTIMATE.start_main_~a~0.base)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (or (not (bvslt (bvadd |ULTIMATE.start_lcp_#res| ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~n~0)) (not (bvslt (bvadd |ULTIMATE.start_lcp_#res| ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~n~0))) (bvsge ULTIMATE.start_main_~x~0 (_ bv0 32)) (= .cse0 (select |#memory_int| ULTIMATE.start_lcp_~a.base)) (bvsge ULTIMATE.start_main_~y~0 (_ bv0 32)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc18.base|)) (or (not (bvslt (bvadd ULTIMATE.start_lcp_~l~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~n~0)) (not (bvslt (bvadd ULTIMATE.start_lcp_~l~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~n~0))))) (and (= |ULTIMATE.start_lcp_#res| (_ bv0 32)) (= ULTIMATE.start_lcp_~l~0 (_ bv0 32)))) [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L5(lines 5 7) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L5-1(lines 5 7) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L5-2(lines 5 7) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L854 garLoopResultBuilder]: At program point L18-5(lines 18 20) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (bvslt ULTIMATE.start_main_~n~0 (_ bv1073741824 32)) (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32)) (= ULTIMATE.start_lcp_~y ULTIMATE.start_main_~y~0) (= .cse0 (select |#memory_int| ULTIMATE.start_main_~a~0.base)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= ULTIMATE.start_lcp_~n ULTIMATE.start_main_~n~0) (= ULTIMATE.start_lcp_~x ULTIMATE.start_main_~x~0) (bvsge ULTIMATE.start_main_~x~0 (_ bv0 32)) (= .cse0 (select |#memory_int| ULTIMATE.start_lcp_~a.base)) (bvsge ULTIMATE.start_main_~y~0 (_ bv0 32)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc18.base|)))) [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-08-29 11:50:02,496 INFO L858 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-08-29 11:50:02,497 INFO L858 garLoopResultBuilder]: For program point L6-2(line 6) no Hoare annotation was computed. [2021-08-29 11:50:02,497 INFO L858 garLoopResultBuilder]: For program point L6-4(line 6) no Hoare annotation was computed. [2021-08-29 11:50:02,500 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:50:02,514 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-29 11:50:02,517 INFO L158 Benchmark]: Toolchain (without parser) took 106519.94ms. Allocated memory was 54.5MB in the beginning and 81.8MB in the end (delta: 27.3MB). Free memory was 33.2MB in the beginning and 55.4MB in the end (delta: -22.2MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2021-08-29 11:50:02,517 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:50:02,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.75ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.1MB in the beginning and 51.1MB in the end (delta: -18.0MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-08-29 11:50:02,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.35ms. Allocated memory is still 67.1MB. Free memory was 51.1MB in the beginning and 49.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 11:50:02,519 INFO L158 Benchmark]: Boogie Preprocessor took 38.28ms. Allocated memory is still 67.1MB. Free memory was 49.0MB in the beginning and 47.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:50:02,520 INFO L158 Benchmark]: RCFGBuilder took 195.85ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 37.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 11:50:02,521 INFO L158 Benchmark]: TraceAbstraction took 106004.48ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 36.5MB in the beginning and 55.4MB in the end (delta: -19.0MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2021-08-29 11:50:02,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.75ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.1MB in the beginning and 51.1MB in the end (delta: -18.0MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.35ms. Allocated memory is still 67.1MB. Free memory was 51.1MB in the beginning and 49.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.28ms. Allocated memory is still 67.1MB. Free memory was 49.0MB in the beginning and 47.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 195.85ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 37.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 106004.48ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 36.5MB in the beginning and 55.4MB in the end (delta: -19.0MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 105950.84ms, OverallIterations: 6, TraceHistogramMax: 5, EmptinessCheckTime: 7.39ms, AutomataDifference: 12364.87ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 724.00ms, InitialAbstractionConstructionTime: 5.38ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 335 SdHoareTripleChecker+Valid, 3864.66ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 335 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3639.93ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 65 IncrementalHoareTripleChecker+Unchecked, 290 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 753 IncrementalHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 0 mSDtfsCounter, 753 mSolverCounterSat, 8.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 91881.44ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=5, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 21.95ms AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 13 NumberOfFragments, 112 HoareAnnotationTreeSize, 3 FomulaSimplifications, 283 FormulaSimplificationTreeSizeReduction, 127.92ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 590.59ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 73.09ms SsaConstructionTime, 690.68ms SatisfiabilityAnalysisTime, 60368.56ms InterpolantComputationTime, 121 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 230 ConstructedInterpolants, 34 QuantifiedInterpolants, 2736 SizeOfPredicates, 93 NumberOfNonLiveVariables, 563 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 54/78 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 2 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-08-29 11:50:02,661 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...