./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/loop-industry-pattern/aiob_4.c.v+lh-reducer.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 289dd888f37cc0d6d55c6d2fce6d1543cb91b245 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 03:49:49,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:49:49,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:49:49,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:49:49,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:49:49,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:49:49,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:49:49,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:49:49,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:49:49,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:49:49,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:49:49,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:49:49,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:49:49,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:49:49,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:49:49,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:49:49,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:49:49,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:49:49,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:49:49,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:49:49,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:49:49,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:49:49,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:49:49,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:49:49,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:49:49,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:49:49,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:49:49,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:49:49,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:49:49,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:49:49,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:49:49,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:49:49,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:49:49,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:49:49,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:49:49,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:49:49,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:49:49,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:49:49,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:49:49,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:49:49,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:49:49,504 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:49:49,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:49:49,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:49:49,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:49:49,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:49:49,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:49:49,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:49:49,545 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:49:49,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:49:49,545 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:49:49,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:49:49,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:49:49,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:49:49,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:49:49,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:49:49,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:49:49,547 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:49:49,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:49:49,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:49:49,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:49:49,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:49:49,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:49:49,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:49:49,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:49:49,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:49:49,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:49:49,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:49:49,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:49:49,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:49:49,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:49:49,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:49:49,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 289dd888f37cc0d6d55c6d2fce6d1543cb91b245 [2021-08-26 03:49:49,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:49:49,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:49:49,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:49:49,883 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:49:49,884 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:49:49,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-08-26 03:49:49,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2782a367/a0f8ed4dc7154c27b7db0a49b46c23b3/FLAG0f8e0a895 [2021-08-26 03:49:50,477 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:49:50,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-08-26 03:49:50,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2782a367/a0f8ed4dc7154c27b7db0a49b46c23b3/FLAG0f8e0a895 [2021-08-26 03:49:50,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2782a367/a0f8ed4dc7154c27b7db0a49b46c23b3 [2021-08-26 03:49:50,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:49:50,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:49:50,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:49:50,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:49:50,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:49:50,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:49:50" (1/1) ... [2021-08-26 03:49:50,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14bcbc9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:50, skipping insertion in model container [2021-08-26 03:49:50,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:49:50" (1/1) ... [2021-08-26 03:49:50,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:49:51,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:49:51,288 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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-08-26 03:49:51,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:49:51,311 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:49:51,390 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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-08-26 03:49:51,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:49:51,413 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:49:51,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51 WrapperNode [2021-08-26 03:49:51,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:49:51,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:49:51,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:49:51,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:49:51,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (1/1) ... [2021-08-26 03:49:51,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (1/1) ... [2021-08-26 03:49:51,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:49:51,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:49:51,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:49:51,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:49:51,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (1/1) ... [2021-08-26 03:49:51,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (1/1) ... [2021-08-26 03:49:51,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (1/1) ... [2021-08-26 03:49:51,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (1/1) ... [2021-08-26 03:49:51,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (1/1) ... [2021-08-26 03:49:51,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (1/1) ... [2021-08-26 03:49:51,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (1/1) ... [2021-08-26 03:49:51,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:49:51,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:49:51,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:49:51,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:49:51,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (1/1) ... [2021-08-26 03:49:51,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:49:51,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:49:51,589 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) [2021-08-26 03:49:51,611 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 [2021-08-26 03:49:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 03:49:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-08-26 03:49:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:49:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:49:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:49:51,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:49:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 03:49:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 03:49:52,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:49:52,286 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-26 03:49:52,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:49:52 BoogieIcfgContainer [2021-08-26 03:49:52,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:49:52,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:49:52,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:49:52,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:49:52,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:49:50" (1/3) ... [2021-08-26 03:49:52,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d868ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:49:52, skipping insertion in model container [2021-08-26 03:49:52,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:51" (2/3) ... [2021-08-26 03:49:52,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d868ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:49:52, skipping insertion in model container [2021-08-26 03:49:52,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:49:52" (3/3) ... [2021-08-26 03:49:52,295 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2021-08-26 03:49:52,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:49:52,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:49:52,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:49:52,346 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 [2021-08-26 03:49:52,346 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:49:52,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 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) [2021-08-26 03:49:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 03:49:52,362 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:49:52,362 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:49:52,363 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:49:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:49:52,368 INFO L82 PathProgramCache]: Analyzing trace with hash 176653045, now seen corresponding path program 1 times [2021-08-26 03:49:52,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:49:52,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691171472] [2021-08-26 03:49:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:52,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:49:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:52,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:49:52,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691171472] [2021-08-26 03:49:52,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691171472] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:49:52,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:49:52,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:49:52,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758615358] [2021-08-26 03:49:52,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:49:52,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:49:52,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:49:52,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:49:52,754 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-08-26 03:49:52,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:49:52,815 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-08-26 03:49:52,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:49:52,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-08-26 03:49:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:49:52,823 INFO L225 Difference]: With dead ends: 32 [2021-08-26 03:49:52,823 INFO L226 Difference]: Without dead ends: 17 [2021-08-26 03:49:52,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:49:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-26 03:49:52,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-08-26 03:49:52,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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) [2021-08-26 03:49:52,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-08-26 03:49:52,848 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2021-08-26 03:49:52,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:49:52,849 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-08-26 03:49:52,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-08-26 03:49:52,849 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-08-26 03:49:52,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 03:49:52,850 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:49:52,850 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:49:52,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:49:52,850 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:49:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:49:52,853 INFO L82 PathProgramCache]: Analyzing trace with hash -314667186, now seen corresponding path program 1 times [2021-08-26 03:49:52,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:49:52,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910400037] [2021-08-26 03:49:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:52,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:49:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:53,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:49:53,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910400037] [2021-08-26 03:49:53,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910400037] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:53,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233023451] [2021-08-26 03:49:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:53,051 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:49:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:49:53,052 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) [2021-08-26 03:49:53,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 03:49:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:53,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 03:49:53,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:49:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:53,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233023451] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:53,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:49:53,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-08-26 03:49:53,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477142973] [2021-08-26 03:49:53,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 03:49:53,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:49:53,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 03:49:53,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 03:49:53,512 INFO L87 Difference]: Start difference. First operand 14 states and 14 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) [2021-08-26 03:49:53,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:49:53,642 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-08-26 03:49:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 03:49:53,643 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 13 [2021-08-26 03:49:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:49:53,645 INFO L225 Difference]: With dead ends: 25 [2021-08-26 03:49:53,646 INFO L226 Difference]: Without dead ends: 22 [2021-08-26 03:49:53,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-26 03:49:53,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-26 03:49:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2021-08-26 03:49:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 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) [2021-08-26 03:49:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-08-26 03:49:53,652 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2021-08-26 03:49:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:49:53,653 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-08-26 03:49:53,653 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) [2021-08-26 03:49:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-08-26 03:49:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 03:49:53,655 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:49:53,657 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 03:49:53,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 03:49:53,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:49:53,873 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:49:53,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:49:53,873 INFO L82 PathProgramCache]: Analyzing trace with hash 921588373, now seen corresponding path program 2 times [2021-08-26 03:49:53,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:49:53,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875525571] [2021-08-26 03:49:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:53,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:49:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:54,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:49:54,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875525571] [2021-08-26 03:49:54,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875525571] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:54,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139851624] [2021-08-26 03:49:54,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:49:54,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:49:54,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:49:54,017 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) [2021-08-26 03:49:54,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 03:49:54,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:49:54,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:49:54,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 03:49:54,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:49:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:54,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139851624] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:54,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:49:54,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-08-26 03:49:54,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079988836] [2021-08-26 03:49:54,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 03:49:54,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:49:54,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 03:49:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-26 03:49:54,541 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-08-26 03:49:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:49:54,717 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-08-26 03:49:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 03:49:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 [2021-08-26 03:49:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:49:54,719 INFO L225 Difference]: With dead ends: 30 [2021-08-26 03:49:54,719 INFO L226 Difference]: Without dead ends: 27 [2021-08-26 03:49:54,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.0ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-26 03:49:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-26 03:49:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-08-26 03:49:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 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) [2021-08-26 03:49:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-08-26 03:49:54,723 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 18 [2021-08-26 03:49:54,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:49:54,724 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-08-26 03:49:54,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-08-26 03:49:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-08-26 03:49:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 03:49:54,725 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:49:54,725 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-08-26 03:49:54,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 03:49:54,941 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,SelfDestructingSolverStorable2 [2021-08-26 03:49:54,941 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:49:54,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:49:54,942 INFO L82 PathProgramCache]: Analyzing trace with hash -590838866, now seen corresponding path program 3 times [2021-08-26 03:49:54,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:49:54,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714932311] [2021-08-26 03:49:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:54,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:49:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:55,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:49:55,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714932311] [2021-08-26 03:49:55,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714932311] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:55,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360301191] [2021-08-26 03:49:55,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:49:55,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:49:55,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:49:55,113 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) [2021-08-26 03:49:55,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 03:49:55,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 03:49:55,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:49:55,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 39 conjunts are in the unsatisfiable core [2021-08-26 03:49:55,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:49:57,691 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 03:49:57,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 55 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 89 treesize of output 169 [2021-08-26 03:50:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-26 03:50:00,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360301191] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:50:00,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:50:00,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-08-26 03:50:00,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983937776] [2021-08-26 03:50:00,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 03:50:00,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:50:00,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 03:50:00,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-08-26 03:50:00,908 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-08-26 03:50:03,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:50:03,257 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-08-26 03:50:03,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 03:50:03,258 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 23 [2021-08-26 03:50:03,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:50:03,259 INFO L225 Difference]: With dead ends: 35 [2021-08-26 03:50:03,259 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:50:03,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 2513.7ms TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2021-08-26 03:50:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:50:03,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:50:03,260 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) [2021-08-26 03:50:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:50:03,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-08-26 03:50:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:50:03,261 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:50:03,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-08-26 03:50:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:50:03,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:50:03,263 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:50:03,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 03:50:03,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:50:03,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:50:03,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:50:03,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:50:04,055 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 236) no Hoare annotation was computed. [2021-08-26 03:50:04,056 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:50:04,056 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 208) no Hoare annotation was computed. [2021-08-26 03:50:04,056 INFO L857 garLoopResultBuilder]: For program point L221(line 221) no Hoare annotation was computed. [2021-08-26 03:50:04,056 INFO L857 garLoopResultBuilder]: For program point L219(lines 219 227) no Hoare annotation was computed. [2021-08-26 03:50:04,056 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 229) no Hoare annotation was computed. [2021-08-26 03:50:04,056 INFO L857 garLoopResultBuilder]: For program point L180(lines 180 234) no Hoare annotation was computed. [2021-08-26 03:50:04,057 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 207) no Hoare annotation was computed. [2021-08-26 03:50:04,057 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:50:04,057 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:50:04,057 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:50:04,057 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 221) no Hoare annotation was computed. [2021-08-26 03:50:04,058 INFO L853 garLoopResultBuilder]: At program point L202(lines 167 235) the Hoare annotation is: (let ((.cse15 (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|))) (let ((.cse2 (= (select .cse15 (+ 408 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)) 24650)) (.cse3 (<= (select .cse15 (+ 456 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)) 24644)) (.cse4 (= 24647 (select .cse15 (+ 156 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)))) (.cse5 (= (select .cse15 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 420)) 24655)) (.cse6 (<= (select .cse15 (+ 468 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)) 24645)) (.cse7 (<= 24658 (select .cse15 (+ 480 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)))) (.cse8 (= (select .cse15 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 396)) 24650)) (.cse9 (= (select .cse15 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0)) (.cse10 (= |ULTIMATE.start_main_~#main__Id_MCDC_119~0.offset| 0)) (.cse11 (<= 24657 (select .cse15 (+ 444 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)))) (.cse12 (<= 24656 (select .cse15 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 432)))) (.cse13 (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse14 (<= (select .cse15 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 384)) 24649))) (or (let ((.cse0 (mod (+ 4294967295 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) 4294967296)) (.cse1 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (and (not (= (* 12 .cse0) 492)) (not (= (* 12 .cse1) 492)) .cse2 .cse3 (< .cse0 42) .cse4 (< .cse1 42) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14)) (and (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) .cse2 .cse3 .cse4 .cse5 .cse6 (<= ~Id_MCDC_93~0 1) .cse7 .cse8 .cse9 .cse10 (<= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 1) (<= 1 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) .cse11 .cse12 .cse13 .cse14) (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (= ~Id_MCDC_93~0 0) .cse12 .cse13 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse14)))) [2021-08-26 03:50:04,058 INFO L860 garLoopResultBuilder]: At program point L233(lines 133 237) the Hoare annotation is: true [2021-08-26 03:50:04,062 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:50:04,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:50:04 BoogieIcfgContainer [2021-08-26 03:50:04,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:50:04,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:50:04,082 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:50:04,083 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:50:04,083 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:49:52" (3/4) ... [2021-08-26 03:50:04,085 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:50:04,096 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-08-26 03:50:04,097 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 03:50:04,098 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-26 03:50:04,098 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:50:04,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:50:04,242 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:50:04,243 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:50:04,243 INFO L168 Benchmark]: Toolchain (without parser) took 13278.23 ms. Allocated memory was 50.3 MB in the beginning and 172.0 MB in the end (delta: 121.6 MB). Free memory was 26.6 MB in the beginning and 129.9 MB in the end (delta: -103.3 MB). Peak memory consumption was 102.3 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:04,244 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 32.3 MB in the beginning and 32.2 MB in the end (delta: 38.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:50:04,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.63 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.4 MB in the beginning and 41.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:04,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.87 ms. Allocated memory is still 62.9 MB. Free memory was 41.2 MB in the beginning and 38.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:04,245 INFO L168 Benchmark]: Boogie Preprocessor took 64.08 ms. Allocated memory is still 62.9 MB. Free memory was 38.0 MB in the beginning and 34.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:04,245 INFO L168 Benchmark]: RCFGBuilder took 723.27 ms. Allocated memory is still 62.9 MB. Free memory was 34.9 MB in the beginning and 27.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:04,245 INFO L168 Benchmark]: TraceAbstraction took 11792.34 ms. Allocated memory was 62.9 MB in the beginning and 172.0 MB in the end (delta: 109.1 MB). Free memory was 26.8 MB in the beginning and 94.1 MB in the end (delta: -67.3 MB). Peak memory consumption was 90.6 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:04,246 INFO L168 Benchmark]: Witness Printer took 160.39 ms. Allocated memory is still 172.0 MB. Free memory was 94.1 MB in the beginning and 129.9 MB in the end (delta: -35.8 MB). Peak memory consumption was 49.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:04,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 32.3 MB in the beginning and 32.2 MB in the end (delta: 38.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 446.63 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.4 MB in the beginning and 41.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.87 ms. Allocated memory is still 62.9 MB. Free memory was 41.2 MB in the beginning and 38.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.08 ms. Allocated memory is still 62.9 MB. Free memory was 38.0 MB in the beginning and 34.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 723.27 ms. Allocated memory is still 62.9 MB. Free memory was 34.9 MB in the beginning and 27.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11792.34 ms. Allocated memory was 62.9 MB in the beginning and 172.0 MB in the end (delta: 109.1 MB). Free memory was 26.8 MB in the beginning and 94.1 MB in the end (delta: -67.3 MB). Peak memory consumption was 90.6 MB. Max. memory is 16.1 GB. * Witness Printer took 160.39 ms. Allocated memory is still 172.0 MB. Free memory was 94.1 MB in the beginning and 129.9 MB in the end (delta: -35.8 MB). Peak memory consumption was 49.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 221]: 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11724.3ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 10.3ms, AutomataDifference: 2753.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 569.3ms, InitialAbstractionConstructionTime: 7.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 124 SDslu, 85 SDs, 0 SdLazy, 189 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 356.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2750.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 376 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 73.2ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 550 FormulaSimplificationTreeSizeReductionInter, 490.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 193.2ms SsaConstructionTime, 1144.6ms SatisfiabilityAnalysisTime, 5831.6ms InterpolantComputationTime, 116 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 2031 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1217 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: (((((((((((((((((!(12 * ((4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296) == 492) && !(12 * ((Id_MCDC_93 + 4294967295) % 4294967296) == 492)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][408 + Id_MCDC_89__Id_MCDC_95] == 24650) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][456 + Id_MCDC_89__Id_MCDC_95] <= 24644) && (4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296 < 42) && 24647 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][156 + Id_MCDC_89__Id_MCDC_95]) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 420] == 24655) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][468 + Id_MCDC_89__Id_MCDC_95] <= 24645) && 24658 <= unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][480 + Id_MCDC_89__Id_MCDC_95]) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 396] == 24650) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && main__Id_MCDC_119 == 0) && 24657 <= unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][444 + Id_MCDC_89__Id_MCDC_95]) && 24656 <= unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 432]) && Id_MCDC_89__Id_MCDC_95 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 384] <= 24649) || ((((((((((((((((0 < Id_MCDC_93 / 4294967296 + 1 && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][408 + Id_MCDC_89__Id_MCDC_95] == 24650) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][456 + Id_MCDC_89__Id_MCDC_95] <= 24644) && 24647 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][156 + Id_MCDC_89__Id_MCDC_95]) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 420] == 24655) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][468 + Id_MCDC_89__Id_MCDC_95] <= 24645) && Id_MCDC_93 <= 1) && 24658 <= unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][480 + Id_MCDC_89__Id_MCDC_95]) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 396] == 24650) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && main__Id_MCDC_119 == 0) && Id_MCDC_89__Id_MCDC_96 <= 1) && 1 <= Id_MCDC_89__Id_MCDC_96) && 24657 <= unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][444 + Id_MCDC_89__Id_MCDC_95]) && 24656 <= unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 432]) && Id_MCDC_89__Id_MCDC_95 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 384] <= 24649)) || ((((((((((((((unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][408 + Id_MCDC_89__Id_MCDC_95] == 24650 && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][456 + Id_MCDC_89__Id_MCDC_95] <= 24644) && 24647 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][156 + Id_MCDC_89__Id_MCDC_95]) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 420] == 24655) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][468 + Id_MCDC_89__Id_MCDC_95] <= 24645) && 24658 <= unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][480 + Id_MCDC_89__Id_MCDC_95]) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 396] == 24650) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && main__Id_MCDC_119 == 0) && 24657 <= unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][444 + Id_MCDC_89__Id_MCDC_95]) && Id_MCDC_93 == 0) && 24656 <= unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 432]) && Id_MCDC_89__Id_MCDC_95 == 0) && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 384] <= 24649) - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 03:50:04,276 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...