./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg --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 7fe3843d41a84d22889162aaa1c2b6d18f44faeeac702eea9c45f49a2c72d4bd ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:40:03,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:40:03,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:40:03,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:40:03,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:40:03,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:40:03,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:40:03,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:40:03,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:40:03,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:40:03,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:40:03,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:40:03,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:40:03,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:40:03,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:40:03,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:40:03,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:40:03,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:40:03,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:40:03,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:40:03,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:40:03,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:40:03,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:40:03,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:40:03,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:40:03,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:40:03,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:40:03,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:40:03,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:40:03,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:40:03,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:40:03,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:40:03,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:40:03,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:40:03,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:40:03,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:40:03,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:40:03,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:40:03,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:40:03,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:40:03,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:40:03,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-28 08:40:03,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:40:03,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:40:03,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:40:03,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:40:03,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:40:03,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:40:03,440 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:40:03,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:40:03,441 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:40:03,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:40:03,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:40:03,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:40:03,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:40:03,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:40:03,444 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-28 08:40:03,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:40:03,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:40:03,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:40:03,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:40:03,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:40:03,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:40:03,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:40:03,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:40:03,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:40:03,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:40:03,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:40:03,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:40:03,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:40:03,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:40:03,450 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_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fe3843d41a84d22889162aaa1c2b6d18f44faeeac702eea9c45f49a2c72d4bd [2021-10-28 08:40:03,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:40:03,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:40:03,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:40:03,883 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:40:03,885 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:40:03,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2021-10-28 08:40:03,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/data/a57714134/27533367e64d473b84aef4311c0dc580/FLAG8cb0215a5 [2021-10-28 08:40:04,479 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:40:04,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2021-10-28 08:40:04,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/data/a57714134/27533367e64d473b84aef4311c0dc580/FLAG8cb0215a5 [2021-10-28 08:40:04,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/data/a57714134/27533367e64d473b84aef4311c0dc580 [2021-10-28 08:40:04,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:40:04,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:40:04,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:40:04,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:40:04,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:40:04,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:40:04" (1/1) ... [2021-10-28 08:40:04,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc5cc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:04, skipping insertion in model container [2021-10-28 08:40:04,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:40:04" (1/1) ... [2021-10-28 08:40:04,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:40:04,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:40:05,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:40:05,034 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:40:05,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:40:05,060 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:40:05,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05 WrapperNode [2021-10-28 08:40:05,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:40:05,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:40:05,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:40:05,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:40:05,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (1/1) ... [2021-10-28 08:40:05,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (1/1) ... [2021-10-28 08:40:05,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:40:05,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:40:05,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:40:05,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:40:05,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (1/1) ... [2021-10-28 08:40:05,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (1/1) ... [2021-10-28 08:40:05,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (1/1) ... [2021-10-28 08:40:05,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (1/1) ... [2021-10-28 08:40:05,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (1/1) ... [2021-10-28 08:40:05,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (1/1) ... [2021-10-28 08:40:05,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (1/1) ... [2021-10-28 08:40:05,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:40:05,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:40:05,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:40:05,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:40:05,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (1/1) ... [2021-10-28 08:40:05,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:40:05,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:05,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:05,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:40:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:40:05,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:40:05,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:40:05,372 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 08:40:05,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:40:05 BoogieIcfgContainer [2021-10-28 08:40:05,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:40:05,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:40:05,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:40:05,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:40:05,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:40:04" (1/3) ... [2021-10-28 08:40:05,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a84b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:40:05, skipping insertion in model container [2021-10-28 08:40:05,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:05" (2/3) ... [2021-10-28 08:40:05,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a84b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:40:05, skipping insertion in model container [2021-10-28 08:40:05,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:40:05" (3/3) ... [2021-10-28 08:40:05,382 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4.c [2021-10-28 08:40:05,387 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:40:05,387 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-28 08:40:05,462 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:40:05,469 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 [2021-10-28 08:40:05,469 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 08:40:05,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.7) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:40:05,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 08:40:05,523 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:05,524 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 08:40:05,525 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-28 08:40:05,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-28 08:40:05,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:05,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694658480] [2021-10-28 08:40:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:05,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:05,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:40:05,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694658480] [2021-10-28 08:40:05,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694658480] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:05,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:05,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-28 08:40:05,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988111442] [2021-10-28 08:40:05,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:40:05,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:40:05,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:40:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:40:05,719 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.7) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-10-28 08:40:05,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:05,755 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 08:40:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:40:05,757 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 [2021-10-28 08:40:05,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:05,767 INFO L225 Difference]: With dead ends: 19 [2021-10-28 08:40:05,769 INFO L226 Difference]: Without dead ends: 10 [2021-10-28 08:40:05,773 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 [2021-10-28 08:40:05,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-28 08:40:05,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-28 08:40:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:40:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-28 08:40:05,804 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-10-28 08:40:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:05,805 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-28 08:40:05,805 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) [2021-10-28 08:40:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-28 08:40:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 08:40:05,806 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:05,806 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 08:40:05,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:40:05,807 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-28 08:40:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:05,808 INFO L85 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-28 08:40:05,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:05,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797526931] [2021-10-28 08:40:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:05,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:05,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:40:05,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797526931] [2021-10-28 08:40:05,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797526931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:05,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:05,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-28 08:40:05,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934437602] [2021-10-28 08:40:05,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:40:05,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:40:05,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:40:05,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:40:05,839 INFO L87 Difference]: Start difference. First operand 10 states and 11 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) [2021-10-28 08:40:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:05,848 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-28 08:40:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:40:05,849 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 [2021-10-28 08:40:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:05,850 INFO L225 Difference]: With dead ends: 10 [2021-10-28 08:40:05,850 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 08:40:05,851 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 [2021-10-28 08:40:05,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 08:40:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 08:40:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-10-28 08:40:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-28 08:40:05,858 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2021-10-28 08:40:05,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:05,858 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-28 08:40:05,859 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) [2021-10-28 08:40:05,859 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-28 08:40:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 08:40:05,859 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:05,859 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 08:40:05,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:40:05,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-28 08:40:05,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:05,861 INFO L85 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-28 08:40:05,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:05,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335163417] [2021-10-28 08:40:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:05,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:05,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:40:05,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335163417] [2021-10-28 08:40:05,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335163417] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:05,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:05,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:40:05,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781109114] [2021-10-28 08:40:05,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:40:05,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:40:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:40:05,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:40:05,914 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-28 08:40:05,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:05,939 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-28 08:40:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:40:05,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-28 08:40:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:05,945 INFO L225 Difference]: With dead ends: 9 [2021-10-28 08:40:05,945 INFO L226 Difference]: Without dead ends: 8 [2021-10-28 08:40:05,946 INFO L786 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 [2021-10-28 08:40:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-28 08:40:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 08:40:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2021-10-28 08:40:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-28 08:40:05,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-10-28 08:40:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:05,948 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-28 08:40:05,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-28 08:40:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-10-28 08:40:05,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 08:40:05,949 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:05,949 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 08:40:05,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:40:05,950 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-28 08:40:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:05,951 INFO L85 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-28 08:40:05,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:05,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233748414] [2021-10-28 08:40:05,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:05,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:06,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:40:06,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233748414] [2021-10-28 08:40:06,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233748414] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:06,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:06,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:40:06,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310149472] [2021-10-28 08:40:06,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:40:06,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:40:06,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:40:06,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:40:06,008 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-28 08:40:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:06,020 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-28 08:40:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:40:06,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-28 08:40:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:06,021 INFO L225 Difference]: With dead ends: 9 [2021-10-28 08:40:06,021 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:40:06,022 INFO L786 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 [2021-10-28 08:40:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:40:06,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:40:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:40:06,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:40:06,023 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-28 08:40:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:06,024 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:40:06,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-28 08:40:06,024 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:40:06,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:40:06,027 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:40:06,028 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:40:06,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:40:06,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:40:06,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:40:06,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 08:40:06,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:40:06,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:40:06,053 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-28 08:40:06,053 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 08:40:06,054 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-28 08:40:06,054 INFO L853 garLoopResultBuilder]: At program point L25(lines 13 26) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2021-10-28 08:40:06,054 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-28 08:40:06,055 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-28 08:40:06,055 INFO L857 garLoopResultBuilder]: For program point L17-2(lines 17 24) no Hoare annotation was computed. [2021-10-28 08:40:06,055 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-28 08:40:06,055 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-28 08:40:06,056 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 08:40:06,056 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 08:40:06,056 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-28 08:40:06,056 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-28 08:40:06,056 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 23) no Hoare annotation was computed. [2021-10-28 08:40:06,057 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 24) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 2147483647) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-10-28 08:40:06,061 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 08:40:06,062 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:40:06,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:40:06 BoogieIcfgContainer [2021-10-28 08:40:06,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:40:06,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:40:06,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:40:06,081 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:40:06,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:40:05" (3/4) ... [2021-10-28 08:40:06,090 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:40:06,101 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-28 08:40:06,101 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 08:40:06,140 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:40:06,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:40:06,142 INFO L168 Benchmark]: Toolchain (without parser) took 1282.98 ms. Allocated memory is still 113.2 MB. Free memory was 74.0 MB in the beginning and 46.3 MB in the end (delta: 27.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:06,143 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 113.2 MB. Free memory is still 90.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:40:06,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.19 ms. Allocated memory is still 113.2 MB. Free memory was 73.8 MB in the beginning and 89.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:06,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.58 ms. Allocated memory is still 113.2 MB. Free memory was 89.6 MB in the beginning and 88.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:06,145 INFO L168 Benchmark]: Boogie Preprocessor took 18.25 ms. Allocated memory is still 113.2 MB. Free memory was 88.2 MB in the beginning and 87.6 MB in the end (delta: 614.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:40:06,145 INFO L168 Benchmark]: RCFGBuilder took 237.88 ms. Allocated memory is still 113.2 MB. Free memory was 87.6 MB in the beginning and 79.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:06,146 INFO L168 Benchmark]: TraceAbstraction took 703.53 ms. Allocated memory is still 113.2 MB. Free memory was 78.7 MB in the beginning and 48.4 MB in the end (delta: 30.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:06,147 INFO L168 Benchmark]: Witness Printer took 60.33 ms. Allocated memory is still 113.2 MB. Free memory was 48.4 MB in the beginning and 46.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:06,150 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 113.2 MB. Free memory is still 90.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 199.19 ms. Allocated memory is still 113.2 MB. Free memory was 73.8 MB in the beginning and 89.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.58 ms. Allocated memory is still 113.2 MB. Free memory was 89.6 MB in the beginning and 88.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.25 ms. Allocated memory is still 113.2 MB. Free memory was 88.2 MB in the beginning and 87.6 MB in the end (delta: 614.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 237.88 ms. Allocated memory is still 113.2 MB. Free memory was 87.6 MB in the beginning and 79.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 703.53 ms. Allocated memory is still 113.2 MB. Free memory was 78.7 MB in the beginning and 48.4 MB in the end (delta: 30.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 60.33 ms. Allocated memory is still 113.2 MB. Free memory was 48.4 MB in the beginning and 46.3 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: - 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 - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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: 29 SDtfs, 22 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: y <= 2147483647 && x <= 2147483647 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: y <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-10-28 08:40:06,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6382cecd-0107-48aa-af64-02afd077ce30/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...