./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig8.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY --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 296e9988b55edbc54108eff44b47c089045df177e779a079877f1dfcae166da5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:22:21,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:22:21,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:22:21,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:22:21,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:22:21,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:22:21,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:22:21,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:22:21,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:22:21,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:22:21,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:22:21,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:22:21,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:22:21,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:22:21,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:22:21,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:22:22,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:22:22,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:22:22,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:22:22,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:22:22,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:22:22,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:22:22,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:22:22,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:22:22,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:22:22,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:22:22,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:22:22,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:22:22,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:22:22,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:22:22,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:22:22,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:22:22,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:22:22,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:22:22,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:22:22,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:22:22,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:22:22,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:22:22,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:22:22,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:22:22,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:22:22,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-07 08:22:22,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:22:22,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:22:22,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:22:22,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:22:22,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:22:22,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:22:22,077 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:22:22,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:22:22,078 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:22:22,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:22:22,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:22:22,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:22:22,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:22:22,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:22:22,080 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 08:22:22,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:22:22,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:22:22,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:22:22,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:22:22,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:22:22,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:22:22,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:22:22,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:22:22,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:22:22,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:22:22,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:22:22,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:22:22,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:22:22,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:22:22,085 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_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 296e9988b55edbc54108eff44b47c089045df177e779a079877f1dfcae166da5 [2021-11-07 08:22:22,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:22:22,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:22:22,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:22:22,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:22:22,430 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:22:22,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig8.c [2021-11-07 08:22:22,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/data/e0835717e/e6fbe9274ab84cc3a21fcbd2c65a3e2c/FLAG31a694212 [2021-11-07 08:22:23,018 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:22:23,018 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig8.c [2021-11-07 08:22:23,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/data/e0835717e/e6fbe9274ab84cc3a21fcbd2c65a3e2c/FLAG31a694212 [2021-11-07 08:22:23,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/data/e0835717e/e6fbe9274ab84cc3a21fcbd2c65a3e2c [2021-11-07 08:22:23,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:22:23,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:22:23,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:22:23,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:22:23,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:22:23,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c94045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23, skipping insertion in model container [2021-11-07 08:22:23,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:22:23,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:22:23,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:22:23,643 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:22:23,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:22:23,688 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:22:23,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23 WrapperNode [2021-11-07 08:22:23,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:22:23,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:22:23,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:22:23,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:22:23,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:22:23,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:22:23,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:22:23,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:22:23,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:22:23,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:22:23,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:22:23,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:22:23,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (1/1) ... [2021-11-07 08:22:23,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:22:23,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:22:23,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:22:23,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:22:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:22:23,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:22:24,127 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:22:24,128 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-07 08:22:24,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:22:24 BoogieIcfgContainer [2021-11-07 08:22:24,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:22:24,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:22:24,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:22:24,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:22:24,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:22:23" (1/3) ... [2021-11-07 08:22:24,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c23d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:22:24, skipping insertion in model container [2021-11-07 08:22:24,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:23" (2/3) ... [2021-11-07 08:22:24,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c23d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:22:24, skipping insertion in model container [2021-11-07 08:22:24,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:22:24" (3/3) ... [2021-11-07 08:22:24,144 INFO L111 eAbstractionObserver]: Analyzing ICFG NoriSharma-FSE2013-Fig8.c [2021-11-07 08:22:24,150 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:22:24,151 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-07 08:22:24,212 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:22:24,221 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, mAutomataTypeConcurrency=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 [2021-11-07 08:22:24,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-07 08:22:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:22:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 08:22:24,253 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:22:24,254 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 08:22:24,254 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-07 08:22:24,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:22:24,269 INFO L85 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-11-07 08:22:24,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:22:24,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164278555] [2021-11-07 08:22:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:22:24,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:22:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:22:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:22:24,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:22:24,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164278555] [2021-11-07 08:22:24,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164278555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:22:24,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:22:24,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 08:22:24,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441752736] [2021-11-07 08:22:24,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:22:24,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:22:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:22:24,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:22:24,491 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-07 08:22:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:22:24,528 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-11-07 08:22:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:22:24,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-07 08:22:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:22:24,541 INFO L225 Difference]: With dead ends: 35 [2021-11-07 08:22:24,541 INFO L226 Difference]: Without dead ends: 22 [2021-11-07 08:22:24,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:22:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-07 08:22:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-11-07 08:22:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:22:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-07 08:22:24,582 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 3 [2021-11-07 08:22:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:22:24,583 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-07 08:22:24,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-07 08:22:24,583 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-07 08:22:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 08:22:24,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:22:24,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 08:22:24,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:22:24,585 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-07 08:22:24,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:22:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-11-07 08:22:24,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:22:24,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849800040] [2021-11-07 08:22:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:22:24,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:22:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:22:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:22:24,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:22:24,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849800040] [2021-11-07 08:22:24,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849800040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:22:24,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:22:24,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 08:22:24,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163873245] [2021-11-07 08:22:24,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:22:24,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:22:24,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:22:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:22:24,627 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-07 08:22:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:22:24,654 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-07 08:22:24,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:22:24,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-07 08:22:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:22:24,656 INFO L225 Difference]: With dead ends: 21 [2021-11-07 08:22:24,656 INFO L226 Difference]: Without dead ends: 20 [2021-11-07 08:22:24,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:22:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-07 08:22:24,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-07 08:22:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 19 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) [2021-11-07 08:22:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-07 08:22:24,663 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 4 [2021-11-07 08:22:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:22:24,663 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-07 08:22:24,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-07 08:22:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-07 08:22:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 08:22:24,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:22:24,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 08:22:24,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:22:24,666 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-07 08:22:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:22:24,667 INFO L85 PathProgramCache]: Analyzing trace with hash 925739533, now seen corresponding path program 1 times [2021-11-07 08:22:24,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:22:24,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991322964] [2021-11-07 08:22:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:22:24,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:22:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:22:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:22:24,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:22:24,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991322964] [2021-11-07 08:22:24,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991322964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:22:24,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:22:24,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 08:22:24,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425441668] [2021-11-07 08:22:24,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:22:24,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:22:24,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:22:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:22:24,749 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-07 08:22:24,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:22:24,803 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-07 08:22:24,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:22:24,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-07 08:22:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:22:24,805 INFO L225 Difference]: With dead ends: 20 [2021-11-07 08:22:24,805 INFO L226 Difference]: Without dead ends: 19 [2021-11-07 08:22:24,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:22:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-07 08:22:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-07 08:22:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 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) [2021-11-07 08:22:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-07 08:22:24,811 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 6 [2021-11-07 08:22:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:22:24,811 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-07 08:22:24,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-07 08:22:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-07 08:22:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 08:22:24,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:22:24,813 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 08:22:24,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:22:24,814 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-07 08:22:24,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:22:24,815 INFO L85 PathProgramCache]: Analyzing trace with hash 925739853, now seen corresponding path program 1 times [2021-11-07 08:22:24,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:22:24,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504171165] [2021-11-07 08:22:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:22:24,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:22:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:22:24,871 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:22:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:22:24,923 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:22:24,924 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 08:22:24,925 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-07 08:22:24,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-07 08:22:24,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-07 08:22:24,929 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-07 08:22:24,929 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-07 08:22:24,930 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-07 08:22:24,930 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-07 08:22:24,931 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-07 08:22:24,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:22:24,936 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-07 08:22:24,940 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:22:24,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:22:24 BoogieIcfgContainer [2021-11-07 08:22:24,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:22:24,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:22:24,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:22:24,961 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:22:24,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:22:24" (3/4) ... [2021-11-07 08:22:24,964 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 08:22:25,010 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:22:25,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:22:25,014 INFO L168 Benchmark]: Toolchain (without parser) took 1613.59 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 65.3 MB in the beginning and 81.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-11-07 08:22:25,015 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 86.0 MB. Free memory is still 62.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:22:25,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.78 ms. Allocated memory is still 86.0 MB. Free memory was 65.0 MB in the beginning and 63.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:22:25,027 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.68 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 62.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:22:25,028 INFO L168 Benchmark]: Boogie Preprocessor took 46.64 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 61.0 MB in the end (delta: 973.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:22:25,029 INFO L168 Benchmark]: RCFGBuilder took 353.14 ms. Allocated memory is still 86.0 MB. Free memory was 61.0 MB in the beginning and 52.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:22:25,029 INFO L168 Benchmark]: TraceAbstraction took 827.26 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 52.0 MB in the beginning and 83.8 MB in the end (delta: -31.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:22:25,030 INFO L168 Benchmark]: Witness Printer took 51.16 ms. Allocated memory is still 113.2 MB. Free memory was 83.1 MB in the beginning and 81.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:22:25,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 86.0 MB. Free memory is still 62.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.78 ms. Allocated memory is still 86.0 MB. Free memory was 65.0 MB in the beginning and 63.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.68 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 62.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.64 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 61.0 MB in the end (delta: 973.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 353.14 ms. Allocated memory is still 86.0 MB. Free memory was 61.0 MB in the beginning and 52.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 827.26 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 52.0 MB in the beginning and 83.8 MB in the end (delta: -31.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 51.16 ms. Allocated memory is still 113.2 MB. Free memory was 83.1 MB in the beginning and 81.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int c, u, v, w, x, y, z; [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L19] u = x [L20] v = y [L21] w = z [L22] c = 0 [L23] COND TRUE x >= y [L24] EXPR c + 1 [L24] c = c + 1 [L25] COND FALSE !(z > 1) [L29] y + 1 - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 27]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 27]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 33 SDslu, 19 SDs, 0 SdLazy, 18 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 incorrect! [2021-11-07 08:22:25,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f209ced7-39bd-43e9-8615-59dba5bf7c79/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)