./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f560e32afd5a40adf4a98abbf810cb377947c4f4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:27:36,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:27:36,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:27:36,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:27:36,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:27:36,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:27:36,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:27:36,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:27:36,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:27:36,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:27:36,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:27:36,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:27:36,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:27:36,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:27:36,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:27:36,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:27:36,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:27:36,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:27:36,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:27:36,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:27:36,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:27:36,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:27:36,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:27:36,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:27:36,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:27:36,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:27:36,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:27:36,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:27:36,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:27:36,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:27:36,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:27:36,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:27:36,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:27:36,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:27:36,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:27:36,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:27:36,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:27:36,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:27:36,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:27:36,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:27:36,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:27:36,600 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-11 00:27:36,655 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:27:36,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:27:36,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:27:36,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:27:36,659 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:27:36,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:27:36,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:27:36,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:27:36,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:27:36,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:27:36,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:27:36,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:27:36,662 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:27:36,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:27:36,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:27:36,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:27:36,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:27:36,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:27:36,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:27:36,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:27:36,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:27:36,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:27:36,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:27:36,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:27:36,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:27:36,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:27:36,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:27:36,667 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f560e32afd5a40adf4a98abbf810cb377947c4f4 [2021-10-11 00:27:36,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:27:37,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:27:37,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:27:37,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:27:37,026 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:27:37,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2021-10-11 00:27:37,100 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/data/a1e300853/3aa1f4fd26e944468ac251aee1fd408a/FLAGb92b3c66f [2021-10-11 00:27:37,664 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:27:37,665 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2021-10-11 00:27:37,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/data/a1e300853/3aa1f4fd26e944468ac251aee1fd408a/FLAGb92b3c66f [2021-10-11 00:27:38,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/data/a1e300853/3aa1f4fd26e944468ac251aee1fd408a [2021-10-11 00:27:38,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:27:38,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:27:38,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:38,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:27:38,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:27:38,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d666c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38, skipping insertion in model container [2021-10-11 00:27:38,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:27:38,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:27:38,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:38,261 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:27:38,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:38,296 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:27:38,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38 WrapperNode [2021-10-11 00:27:38,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:38,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:38,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:27:38,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:27:38,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:38,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:27:38,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:27:38,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:27:38,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (1/1) ... [2021-10-11 00:27:38,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:27:38,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:27:38,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:27:38,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:27:38,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:27:38,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:27:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:27:38,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:27:38,675 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:27:38,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:38 BoogieIcfgContainer [2021-10-11 00:27:38,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:27:38,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:27:38,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:27:38,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:27:38,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:27:38" (1/3) ... [2021-10-11 00:27:38,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6297a90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:38, skipping insertion in model container [2021-10-11 00:27:38,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:38" (2/3) ... [2021-10-11 00:27:38,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6297a90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:38, skipping insertion in model container [2021-10-11 00:27:38,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:38" (3/3) ... [2021-10-11 00:27:38,701 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2021-10-11 00:27:38,730 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:27:38,733 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 00:27:38,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:27:38,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:27:38,770 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:27:38,770 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:27:38,770 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:27:38,771 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:27:38,771 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:27:38,771 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:27:38,771 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:27:38,787 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 00:27:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:27:38,793 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:38,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:27:38,795 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:27:38,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:38,801 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2021-10-11 00:27:38,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:38,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678941515] [2021-10-11 00:27:38,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:38,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678941515] [2021-10-11 00:27:38,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:38,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:27:38,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736399727] [2021-10-11 00:27:38,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:38,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:39,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:39,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:39,010 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2021-10-11 00:27:39,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:39,146 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-10-11 00:27:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:39,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 00:27:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:39,187 INFO L225 Difference]: With dead ends: 33 [2021-10-11 00:27:39,187 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 00:27:39,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:39,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 00:27:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2021-10-11 00:27:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 00:27:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-11 00:27:39,267 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 5 [2021-10-11 00:27:39,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:39,268 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-11 00:27:39,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:39,268 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-11 00:27:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:27:39,269 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:39,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:27:39,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:27:39,283 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:27:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:39,285 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2021-10-11 00:27:39,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:39,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304300656] [2021-10-11 00:27:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:39,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304300656] [2021-10-11 00:27:39,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:39,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:27:39,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159151003] [2021-10-11 00:27:39,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:39,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:39,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:39,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:39,347 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2021-10-11 00:27:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:39,428 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-10-11 00:27:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:39,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 00:27:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:39,430 INFO L225 Difference]: With dead ends: 21 [2021-10-11 00:27:39,430 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 00:27:39,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 00:27:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-10-11 00:27:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 00:27:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-11 00:27:39,437 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 5 [2021-10-11 00:27:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:39,438 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-11 00:27:39,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-11 00:27:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:27:39,439 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:39,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:27:39,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:27:39,439 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:27:39,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:39,440 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2021-10-11 00:27:39,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:39,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479944482] [2021-10-11 00:27:39,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:39,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479944482] [2021-10-11 00:27:39,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:39,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:27:39,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101450017] [2021-10-11 00:27:39,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:27:39,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:39,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:27:39,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:27:39,477 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2021-10-11 00:27:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:39,507 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-10-11 00:27:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:27:39,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 00:27:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:39,509 INFO L225 Difference]: With dead ends: 20 [2021-10-11 00:27:39,509 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 00:27:39,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:27:39,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 00:27:39,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-10-11 00:27:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 00:27:39,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-10-11 00:27:39,515 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 6 [2021-10-11 00:27:39,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:39,516 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-10-11 00:27:39,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:27:39,516 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-10-11 00:27:39,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:27:39,517 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:39,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:27:39,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:27:39,517 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:27:39,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:39,518 INFO L82 PathProgramCache]: Analyzing trace with hash 920236110, now seen corresponding path program 1 times [2021-10-11 00:27:39,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:39,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147454623] [2021-10-11 00:27:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:39,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147454623] [2021-10-11 00:27:39,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:39,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:27:39,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314009196] [2021-10-11 00:27:39,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:27:39,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:39,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:27:39,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:27:39,549 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 3 states. [2021-10-11 00:27:39,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:39,576 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2021-10-11 00:27:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:27:39,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 00:27:39,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:39,577 INFO L225 Difference]: With dead ends: 31 [2021-10-11 00:27:39,578 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 00:27:39,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:27:39,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 00:27:39,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 00:27:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 00:27:39,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-11 00:27:39,583 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2021-10-11 00:27:39,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:39,584 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-11 00:27:39,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:27:39,584 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-11 00:27:39,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:27:39,585 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:39,585 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:39,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:27:39,586 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:27:39,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:39,587 INFO L82 PathProgramCache]: Analyzing trace with hash -22254561, now seen corresponding path program 1 times [2021-10-11 00:27:39,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:39,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360100648] [2021-10-11 00:27:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:39,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360100648] [2021-10-11 00:27:39,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833102940] [2021-10-11 00:27:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:27:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:39,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:27:39,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:39,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:27:39,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-11 00:27:39,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137453278] [2021-10-11 00:27:39,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:27:39,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:39,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:27:39,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:27:39,862 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2021-10-11 00:27:39,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:39,969 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-11 00:27:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:27:39,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 00:27:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:39,971 INFO L225 Difference]: With dead ends: 17 [2021-10-11 00:27:39,971 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:27:39,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:27:39,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:27:39,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:27:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:27:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:27:39,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-11 00:27:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:39,977 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:27:39,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:27:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:27:39,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:27:40,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:27:40,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:27:40,286 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-10-11 00:27:40,286 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:27:40,286 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-11 00:27:40,287 INFO L258 CegarLoopResult]: At program point L27(lines 13 28) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2021-10-11 00:27:40,287 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-11 00:27:40,287 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-11 00:27:40,288 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-11 00:27:40,288 INFO L262 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-10-11 00:27:40,289 INFO L262 CegarLoopResult]: For program point L17(lines 17 26) no Hoare annotation was computed. [2021-10-11 00:27:40,289 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 26) no Hoare annotation was computed. [2021-10-11 00:27:40,289 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-10-11 00:27:40,290 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-11 00:27:40,291 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:27:40,291 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:27:40,291 INFO L262 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2021-10-11 00:27:40,292 INFO L258 CegarLoopResult]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse0 (< 0 ULTIMATE.start_main_~m~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and .cse0 (<= ULTIMATE.start_main_~i~0 2147483646) .cse1) (and .cse0 (<= ULTIMATE.start_main_~i~0 2147483647) .cse1 (<= ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~i~0)))) [2021-10-11 00:27:40,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:27:40 BoogieIcfgContainer [2021-10-11 00:27:40,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:27:40,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:27:40,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:27:40,318 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:27:40,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:38" (3/4) ... [2021-10-11 00:27:40,323 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:27:40,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 00:27:40,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:27:40,395 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de7297e-e419-4196-815d-1220e2de6382/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:27:40,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:27:40,398 INFO L168 Benchmark]: Toolchain (without parser) took 2377.84 ms. Allocated memory was 115.3 MB in the beginning and 140.5 MB in the end (delta: 25.2 MB). Free memory was 85.5 MB in the beginning and 106.6 MB in the end (delta: -21.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:40,399 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 115.3 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:40,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.26 ms. Allocated memory is still 115.3 MB. Free memory was 85.5 MB in the beginning and 91.5 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:40,400 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.83 ms. Allocated memory is still 115.3 MB. Free memory was 91.5 MB in the beginning and 90.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:40,401 INFO L168 Benchmark]: Boogie Preprocessor took 27.57 ms. Allocated memory is still 115.3 MB. Free memory was 90.3 MB in the beginning and 89.4 MB in the end (delta: 934.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:40,401 INFO L168 Benchmark]: RCFGBuilder took 321.93 ms. Allocated memory is still 115.3 MB. Free memory was 89.4 MB in the beginning and 79.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:40,402 INFO L168 Benchmark]: TraceAbstraction took 1626.40 ms. Allocated memory was 115.3 MB in the beginning and 140.5 MB in the end (delta: 25.2 MB). Free memory was 79.3 MB in the beginning and 108.7 MB in the end (delta: -29.4 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:40,403 INFO L168 Benchmark]: Witness Printer took 78.42 ms. Allocated memory is still 140.5 MB. Free memory was 108.7 MB in the beginning and 106.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:40,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 115.3 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.26 ms. Allocated memory is still 115.3 MB. Free memory was 85.5 MB in the beginning and 91.5 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.83 ms. Allocated memory is still 115.3 MB. Free memory was 91.5 MB in the beginning and 90.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.57 ms. Allocated memory is still 115.3 MB. Free memory was 90.3 MB in the beginning and 89.4 MB in the end (delta: 934.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 321.93 ms. Allocated memory is still 115.3 MB. Free memory was 89.4 MB in the beginning and 79.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1626.40 ms. Allocated memory was 115.3 MB in the beginning and 140.5 MB in the end (delta: 25.2 MB). Free memory was 79.3 MB in the beginning and 108.7 MB in the end (delta: -29.4 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. * Witness Printer took 78.42 ms. Allocated memory is still 140.5 MB. Free memory was 108.7 MB in the beginning and 106.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: n <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((0 < m && i <= 2147483646) && n <= 2147483647) || (((0 < m && i <= 2147483647) && n <= 2147483647) && m <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 78 SDslu, 3 SDs, 0 SdLazy, 85 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 27 HoareAnnotationTreeSize, 2 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 796 SizeOfPredicates, 2 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...