./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s1iff.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/array-fpi/s1iff.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 eec6b2d99ac9a557043cad5fb1ce9cac95211db3 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 02:28:44,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 02:28:44,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 02:28:44,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 02:28:44,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 02:28:44,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 02:28:44,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 02:28:44,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 02:28:44,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 02:28:44,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 02:28:44,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 02:28:44,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 02:28:44,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 02:28:44,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 02:28:44,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 02:28:44,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 02:28:44,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 02:28:44,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 02:28:44,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 02:28:44,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 02:28:44,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 02:28:44,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 02:28:44,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 02:28:44,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 02:28:44,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 02:28:44,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 02:28:44,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 02:28:44,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 02:28:44,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 02:28:44,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 02:28:44,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 02:28:44,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 02:28:44,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 02:28:44,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 02:28:44,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 02:28:44,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 02:28:44,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 02:28:44,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 02:28:44,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 02:28:44,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 02:28:44,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 02:28:44,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 02:28:44,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 02:28:44,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 02:28:44,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 02:28:44,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 02:28:44,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 02:28:44,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 02:28:44,467 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 02:28:44,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 02:28:44,468 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 02:28:44,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 02:28:44,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 02:28:44,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 02:28:44,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 02:28:44,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 02:28:44,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 02:28:44,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 02:28:44,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 02:28:44,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 02:28:44,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 02:28:44,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 02:28:44,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 02:28:44,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 02:28:44,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 02:28:44,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 02:28:44,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 02:28:44,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 02:28:44,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 02:28:44,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 02:28:44,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 02:28:44,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 02:28:44,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eec6b2d99ac9a557043cad5fb1ce9cac95211db3 [2021-08-29 02:28:44,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 02:28:44,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 02:28:44,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 02:28:44,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 02:28:44,714 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 02:28:44,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s1iff.c [2021-08-29 02:28:44,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d931717/e782c224ef7743b1a6b711ed88ad9530/FLAG2dec1c9a3 [2021-08-29 02:28:45,110 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 02:28:45,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s1iff.c [2021-08-29 02:28:45,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d931717/e782c224ef7743b1a6b711ed88ad9530/FLAG2dec1c9a3 [2021-08-29 02:28:45,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d931717/e782c224ef7743b1a6b711ed88ad9530 [2021-08-29 02:28:45,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 02:28:45,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 02:28:45,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 02:28:45,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 02:28:45,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 02:28:45,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73239599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45, skipping insertion in model container [2021-08-29 02:28:45,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 02:28:45,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 02:28:45,651 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/array-fpi/s1iff.c[588,601] [2021-08-29 02:28:45,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 02:28:45,667 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 02:28:45,674 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/array-fpi/s1iff.c[588,601] [2021-08-29 02:28:45,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 02:28:45,702 INFO L208 MainTranslator]: Completed translation [2021-08-29 02:28:45,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45 WrapperNode [2021-08-29 02:28:45,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 02:28:45,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 02:28:45,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 02:28:45,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 02:28:45,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 02:28:45,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 02:28:45,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 02:28:45,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 02:28:45,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 02:28:45,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 02:28:45,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 02:28:45,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 02:28:45,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (1/1) ... [2021-08-29 02:28:45,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 02:28:45,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:28:45,838 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 02:28:45,857 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 02:28:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 02:28:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 02:28:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 02:28:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 02:28:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 02:28:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 02:28:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 02:28:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 02:28:46,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 02:28:46,014 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-29 02:28:46,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:28:46 BoogieIcfgContainer [2021-08-29 02:28:46,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 02:28:46,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 02:28:46,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 02:28:46,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 02:28:46,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:28:45" (1/3) ... [2021-08-29 02:28:46,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dae3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:28:46, skipping insertion in model container [2021-08-29 02:28:46,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:28:45" (2/3) ... [2021-08-29 02:28:46,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dae3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:28:46, skipping insertion in model container [2021-08-29 02:28:46,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:28:46" (3/3) ... [2021-08-29 02:28:46,021 INFO L111 eAbstractionObserver]: Analyzing ICFG s1iff.c [2021-08-29 02:28:46,024 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 02:28:46,024 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 02:28:46,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 02:28:46,065 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 02:28:46,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 02:28:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 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 02:28:46,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 02:28:46,085 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:28:46,085 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:28:46,086 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:28:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:28:46,089 INFO L82 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2021-08-29 02:28:46,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:28:46,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320907329] [2021-08-29 02:28:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:28:46,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:28:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:28:46,208 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 02:28:46,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:28:46,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320907329] [2021-08-29 02:28:46,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320907329] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 02:28:46,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 02:28:46,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 02:28:46,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062171363] [2021-08-29 02:28:46,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 02:28:46,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:28:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 02:28:46,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 02:28:46,241 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 02:28:46,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:28:46,298 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-08-29 02:28:46,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 02:28:46,300 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-08-29 02:28:46,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:28:46,304 INFO L225 Difference]: With dead ends: 34 [2021-08-29 02:28:46,305 INFO L226 Difference]: Without dead ends: 15 [2021-08-29 02:28:46,306 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 02:28:46,309 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.20ms IncrementalHoareTripleChecker+Time [2021-08-29 02:28:46,309 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.25ms Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 47.20ms Time] [2021-08-29 02:28:46,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-29 02:28:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-29 02:28:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 02:28:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-08-29 02:28:46,328 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-08-29 02:28:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:28:46,328 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-08-29 02:28:46,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 02:28:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-08-29 02:28:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 02:28:46,329 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:28:46,329 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:28:46,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 02:28:46,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:28:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:28:46,331 INFO L82 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2021-08-29 02:28:46,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:28:46,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956030694] [2021-08-29 02:28:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:28:46,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:28:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:28:46,406 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 02:28:46,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:28:46,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956030694] [2021-08-29 02:28:46,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956030694] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 02:28:46,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 02:28:46,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 02:28:46,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292340156] [2021-08-29 02:28:46,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 02:28:46,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:28:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 02:28:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 02:28:46,409 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 02:28:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:28:46,446 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-08-29 02:28:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 02:28:46,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-08-29 02:28:46,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:28:46,447 INFO L225 Difference]: With dead ends: 28 [2021-08-29 02:28:46,447 INFO L226 Difference]: Without dead ends: 20 [2021-08-29 02:28:46,447 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.70ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 02:28:46,448 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.58ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.40ms IncrementalHoareTripleChecker+Time [2021-08-29 02:28:46,453 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.58ms Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 29.40ms Time] [2021-08-29 02:28:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-29 02:28:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-08-29 02:28:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 02:28:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-08-29 02:28:46,458 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-08-29 02:28:46,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:28:46,458 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-08-29 02:28:46,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 02:28:46,459 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-08-29 02:28:46,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 02:28:46,459 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:28:46,459 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:28:46,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 02:28:46,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:28:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:28:46,460 INFO L82 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2021-08-29 02:28:46,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:28:46,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204694047] [2021-08-29 02:28:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:28:46,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:28:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:28:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:46,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:28:46,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204694047] [2021-08-29 02:28:46,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204694047] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 02:28:46,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913320560] [2021-08-29 02:28:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:28:46,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:28:46,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:28:46,785 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 02:28:46,804 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 02:28:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:28:46,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-29 02:28:46,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 02:28:46,902 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 11 treesize of output 7 [2021-08-29 02:28:46,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-08-29 02:28:46,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-08-29 02:28:47,260 INFO L354 Elim1Store]: treesize reduction 124, result has 15.6 percent of original size [2021-08-29 02:28:47,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 53 [2021-08-29 02:28:47,497 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-08-29 02:28:47,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 48 [2021-08-29 02:28:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:47,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 02:28:50,370 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 02:28:50,371 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 90 [2021-08-29 02:28:50,377 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-29 02:28:50,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 82 [2021-08-29 02:28:50,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 133 treesize of output 115 [2021-08-29 02:28:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:50,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913320560] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 02:28:50,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 02:28:50,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2021-08-29 02:28:50,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246763791] [2021-08-29 02:28:50,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-29 02:28:50,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:28:50,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-29 02:28:50,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=365, Unknown=2, NotChecked=0, Total=462 [2021-08-29 02:28:50,425 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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 02:28:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:28:50,488 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-08-29 02:28:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 02:28:50,489 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) Word has length 16 [2021-08-29 02:28:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:28:50,491 INFO L225 Difference]: With dead ends: 28 [2021-08-29 02:28:50,491 INFO L226 Difference]: Without dead ends: 24 [2021-08-29 02:28:50,492 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2878.23ms TimeCoverageRelationStatistics Valid=106, Invalid=398, Unknown=2, NotChecked=0, Total=506 [2021-08-29 02:28:50,494 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 28.58ms IncrementalHoareTripleChecker+Time [2021-08-29 02:28:50,501 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 54 Unchecked, 28.58ms Time] [2021-08-29 02:28:50,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-29 02:28:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-08-29 02:28:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 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 02:28:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-08-29 02:28:50,507 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2021-08-29 02:28:50,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:28:50,508 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-08-29 02:28:50,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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 02:28:50,513 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-08-29 02:28:50,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 02:28:50,514 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:28:50,514 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:28:50,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 02:28:50,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:28:50,729 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:28:50,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:28:50,730 INFO L82 PathProgramCache]: Analyzing trace with hash 680869797, now seen corresponding path program 1 times [2021-08-29 02:28:50,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:28:50,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735815514] [2021-08-29 02:28:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:28:50,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:28:50,744 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 02:28:50,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735476471] [2021-08-29 02:28:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:28:50,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:28:50,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:28:50,746 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 02:28:50,748 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 02:28:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:28:50,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 02:28:50,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 02:28:50,803 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 11 treesize of output 7 [2021-08-29 02:28:50,838 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 15 treesize of output 7 [2021-08-29 02:28:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:50,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 02:28:50,880 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 14 treesize of output 12 [2021-08-29 02:28:50,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 20 [2021-08-29 02:28:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:50,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:28:50,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735815514] [2021-08-29 02:28:50,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 02:28:50,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735476471] [2021-08-29 02:28:50,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735476471] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 02:28:50,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 02:28:50,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-29 02:28:50,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28778874] [2021-08-29 02:28:50,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 02:28:50,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:28:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 02:28:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-29 02:28:50,898 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 02:28:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:28:50,962 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-08-29 02:28:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 02:28:50,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 02:28:50,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:28:50,964 INFO L225 Difference]: With dead ends: 33 [2021-08-29 02:28:50,964 INFO L226 Difference]: Without dead ends: 26 [2021-08-29 02:28:50,964 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 38.18ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-08-29 02:28:50,966 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.29ms IncrementalHoareTripleChecker+Time [2021-08-29 02:28:50,967 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [6 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 43.29ms Time] [2021-08-29 02:28:50,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-08-29 02:28:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-08-29 02:28:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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 02:28:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-08-29 02:28:50,974 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2021-08-29 02:28:50,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:28:50,974 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-08-29 02:28:50,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 02:28:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-08-29 02:28:50,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-29 02:28:50,975 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:28:50,976 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:28:50,993 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 02:28:51,188 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,SelfDestructingSolverStorable3 [2021-08-29 02:28:51,189 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:28:51,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:28:51,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1137819675, now seen corresponding path program 2 times [2021-08-29 02:28:51,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:28:51,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214504564] [2021-08-29 02:28:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:28:51,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:28:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:28:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:51,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:28:51,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214504564] [2021-08-29 02:28:51,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214504564] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 02:28:51,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054384763] [2021-08-29 02:28:51,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 02:28:51,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:28:51,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:28:51,264 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 02:28:51,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 02:28:51,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 02:28:51,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 02:28:51,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 02:28:51,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 02:28:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:51,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 02:28:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:51,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054384763] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 02:28:51,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 02:28:51,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-08-29 02:28:51,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913865067] [2021-08-29 02:28:51,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-29 02:28:51,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:28:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-29 02:28:51,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-29 02:28:51,400 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 02:28:51,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:28:51,502 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-08-29 02:28:51,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 02:28:51,503 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 18 [2021-08-29 02:28:51,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:28:51,504 INFO L225 Difference]: With dead ends: 33 [2021-08-29 02:28:51,504 INFO L226 Difference]: Without dead ends: 29 [2021-08-29 02:28:51,505 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 59.45ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-08-29 02:28:51,505 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.15ms IncrementalHoareTripleChecker+Time [2021-08-29 02:28:51,506 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 169 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [16 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 68.15ms Time] [2021-08-29 02:28:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-29 02:28:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2021-08-29 02:28:51,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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 02:28:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-08-29 02:28:51,513 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 18 [2021-08-29 02:28:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:28:51,513 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-08-29 02:28:51,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 02:28:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-08-29 02:28:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 02:28:51,514 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:28:51,514 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:28:51,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 02:28:51,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:28:51,729 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:28:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:28:51,729 INFO L82 PathProgramCache]: Analyzing trace with hash -479454913, now seen corresponding path program 3 times [2021-08-29 02:28:51,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:28:51,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538536325] [2021-08-29 02:28:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:28:51,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:28:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 02:28:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:51,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 02:28:51,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538536325] [2021-08-29 02:28:51,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538536325] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 02:28:51,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632242533] [2021-08-29 02:28:51,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 02:28:51,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:28:51,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 02:28:51,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 02:28:51,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 02:28:51,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-29 02:28:51,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 02:28:51,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 02:28:51,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 02:28:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:51,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 02:28:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 02:28:51,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632242533] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 02:28:51,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 02:28:51,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-08-29 02:28:51,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069475167] [2021-08-29 02:28:51,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-29 02:28:51,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 02:28:51,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-29 02:28:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-29 02:28:51,896 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 02:28:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 02:28:51,964 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-08-29 02:28:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 02:28:51,965 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 02:28:51,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 02:28:51,965 INFO L225 Difference]: With dead ends: 37 [2021-08-29 02:28:51,965 INFO L226 Difference]: Without dead ends: 25 [2021-08-29 02:28:51,966 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 38.81ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-08-29 02:28:51,966 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.41ms IncrementalHoareTripleChecker+Time [2021-08-29 02:28:51,967 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [10 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 47.41ms Time] [2021-08-29 02:28:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-29 02:28:51,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-08-29 02:28:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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 02:28:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-08-29 02:28:51,972 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-08-29 02:28:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 02:28:51,973 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-08-29 02:28:51,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 02:28:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-08-29 02:28:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 02:28:51,974 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 02:28:51,974 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 02:28:51,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 02:28:52,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 02:28:52,181 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 02:28:52,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 02:28:52,184 INFO L82 PathProgramCache]: Analyzing trace with hash 634982145, now seen corresponding path program 4 times [2021-08-29 02:28:52,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 02:28:52,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331981352] [2021-08-29 02:28:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 02:28:52,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 02:28:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 02:28:52,201 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 02:28:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 02:28:52,226 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 02:28:52,226 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 02:28:52,227 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 02:28:52,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 02:28:52,232 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 02:28:52,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 02:28:52 BoogieIcfgContainer [2021-08-29 02:28:52,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 02:28:52,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 02:28:52,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 02:28:52,266 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 02:28:52,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:28:46" (3/4) ... [2021-08-29 02:28:52,267 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 02:28:52,308 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 02:28:52,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 02:28:52,310 INFO L158 Benchmark]: Toolchain (without parser) took 6762.72ms. Allocated memory was 48.2MB in the beginning and 96.5MB in the end (delta: 48.2MB). Free memory was 24.0MB in the beginning and 67.4MB in the end (delta: -43.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-08-29 02:28:52,310 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 30.5MB in the beginning and 30.5MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 02:28:52,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.51ms. Allocated memory was 48.2MB in the beginning and 65.0MB in the end (delta: 16.8MB). Free memory was 23.8MB in the beginning and 49.7MB in the end (delta: -25.9MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-08-29 02:28:52,310 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.66ms. Allocated memory is still 65.0MB. Free memory was 49.7MB in the beginning and 48.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 02:28:52,310 INFO L158 Benchmark]: Boogie Preprocessor took 35.89ms. Allocated memory is still 65.0MB. Free memory was 48.1MB in the beginning and 46.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 02:28:52,311 INFO L158 Benchmark]: RCFGBuilder took 212.05ms. Allocated memory is still 65.0MB. Free memory was 46.8MB in the beginning and 37.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 02:28:52,311 INFO L158 Benchmark]: TraceAbstraction took 6247.64ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 37.1MB in the beginning and 70.8MB in the end (delta: -33.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 02:28:52,311 INFO L158 Benchmark]: Witness Printer took 44.27ms. Allocated memory is still 96.5MB. Free memory was 70.8MB in the beginning and 67.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 02:28:52,314 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 48.2MB. Free memory was 30.5MB in the beginning and 30.5MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.51ms. Allocated memory was 48.2MB in the beginning and 65.0MB in the end (delta: 16.8MB). Free memory was 23.8MB in the beginning and 49.7MB in the end (delta: -25.9MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.66ms. Allocated memory is still 65.0MB. Free memory was 49.7MB in the beginning and 48.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.89ms. Allocated memory is still 65.0MB. Free memory was 48.1MB in the beginning and 46.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 212.05ms. Allocated memory is still 65.0MB. Free memory was 46.8MB in the beginning and 37.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6247.64ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 37.1MB in the beginning and 70.8MB in the end (delta: -33.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.27ms. Allocated memory is still 96.5MB. Free memory was 70.8MB in the beginning and 67.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=2] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=2] [L32] COND TRUE i