./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2-TACAS2011-Fig3.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_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2-TACAS2011-Fig3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD --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 d6984ce947edd44f0505e125be96f5769f9348f9c3acb95fd5f2e7ef0f2e794d ............................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:22:51,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:22:51,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:22:51,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:22:51,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:22:51,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:22:51,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:22:51,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:22:51,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:22:51,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:22:51,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:22:51,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:22:51,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:22:51,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:22:51,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:22:51,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:22:51,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:22:51,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:22:51,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:22:51,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:22:51,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:22:51,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:22:51,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:22:51,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:22:51,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:22:51,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:22:51,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:22:51,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:22:51,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:22:51,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:22:51,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:22:51,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:22:51,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:22:51,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:22:51,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:22:51,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:22:51,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:22:51,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:22:51,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:22:51,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:22:51,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:22:51,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-28 23:22:51,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:22:51,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:22:51,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:22:51,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:22:51,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:22:51,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:22:51,189 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:22:51,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:22:51,191 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:22:51,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:22:51,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:22:51,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:22:51,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:22:51,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:22:51,194 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-28 23:22:51,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:22:51,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:22:51,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:22:51,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:22:51,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:22:51,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:22:51,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:22:51,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:22:51,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:22:51,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:22:51,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:22:51,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:22:51,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:22:51,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:22:51,199 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_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6984ce947edd44f0505e125be96f5769f9348f9c3acb95fd5f2e7ef0f2e794d [2021-10-28 23:22:51,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:22:51,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:22:51,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:22:51,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:22:51,515 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:22:51,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2-TACAS2011-Fig3.c [2021-10-28 23:22:51,578 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/data/879e470e1/a08f260d7e3f48adb5ce3013c3d15be8/FLAG4b51b5b95 [2021-10-28 23:22:52,059 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:22:52,060 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2-TACAS2011-Fig3.c [2021-10-28 23:22:52,079 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/data/879e470e1/a08f260d7e3f48adb5ce3013c3d15be8/FLAG4b51b5b95 [2021-10-28 23:22:52,484 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/data/879e470e1/a08f260d7e3f48adb5ce3013c3d15be8 [2021-10-28 23:22:52,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:22:52,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:22:52,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:22:52,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:22:52,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:22:52,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43539602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52, skipping insertion in model container [2021-10-28 23:22:52,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:22:52,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:22:52,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:22:52,639 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:22:52,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:22:52,664 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:22:52,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52 WrapperNode [2021-10-28 23:22:52,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:22:52,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:22:52,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:22:52,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:22:52,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:22:52,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:22:52,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:22:52,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:22:52,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:22:52,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:22:52,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:22:52,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:22:52,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (1/1) ... [2021-10-28 23:22:52,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:22:52,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:52,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:52,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:22:52,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:22:52,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:22:53,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:22:53,018 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:22:53,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:53 BoogieIcfgContainer [2021-10-28 23:22:53,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:22:53,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:22:53,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:22:53,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:22:53,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:22:52" (1/3) ... [2021-10-28 23:22:53,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7e122a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:22:53, skipping insertion in model container [2021-10-28 23:22:53,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:52" (2/3) ... [2021-10-28 23:22:53,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7e122a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:22:53, skipping insertion in model container [2021-10-28 23:22:53,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:53" (3/3) ... [2021-10-28 23:22:53,049 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig2-TACAS2011-Fig3.c [2021-10-28 23:22:53,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:22:53,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-28 23:22:53,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:22:53,128 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 23:22:53,129 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-28 23:22:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.75) internal successors, (21), 18 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) [2021-10-28 23:22:53,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 23:22:53,148 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:53,148 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 23:22:53,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-28 23:22:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:53,155 INFO L85 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-28 23:22:53,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:53,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742885888] [2021-10-28 23:22:53,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:53,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:53,417 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 23:22:53,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:53,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742885888] [2021-10-28 23:22:53,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742885888] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:53,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:53,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:22:53,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038909947] [2021-10-28 23:22:53,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:22:53,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:53,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:22:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:22:53,465 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.75) internal successors, (21), 18 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 23:22:53,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:53,558 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-10-28 23:22:53,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:22:53,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 23:22:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:53,569 INFO L225 Difference]: With dead ends: 46 [2021-10-28 23:22:53,569 INFO L226 Difference]: Without dead ends: 29 [2021-10-28 23:22:53,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:22:53,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-28 23:22:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2021-10-28 23:22:53,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 17 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) [2021-10-28 23:22:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-28 23:22:53,602 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 4 [2021-10-28 23:22:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:53,602 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-28 23:22:53,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 23:22:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-28 23:22:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 23:22:53,603 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:53,604 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 23:22:53,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:22:53,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-28 23:22:53,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:53,606 INFO L85 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-28 23:22:53,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:53,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078140129] [2021-10-28 23:22:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:53,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:53,644 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 23:22:53,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:53,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078140129] [2021-10-28 23:22:53,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078140129] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:53,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:53,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:22:53,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805121127] [2021-10-28 23:22:53,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:22:53,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:53,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:22:53,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:22:53,649 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 23:22:53,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:53,698 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-10-28 23:22:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:22:53,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 23:22:53,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:53,700 INFO L225 Difference]: With dead ends: 31 [2021-10-28 23:22:53,700 INFO L226 Difference]: Without dead ends: 30 [2021-10-28 23:22:53,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:22:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-28 23:22:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2021-10-28 23:22:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.625) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-28 23:22:53,706 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2021-10-28 23:22:53,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:53,707 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-28 23:22:53,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 23:22:53,707 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-28 23:22:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 23:22:53,708 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:53,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 23:22:53,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:22:53,709 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-28 23:22:53,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:53,710 INFO L85 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-28 23:22:53,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:53,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996229963] [2021-10-28 23:22:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:53,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:53,741 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 23:22:53,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:53,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996229963] [2021-10-28 23:22:53,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996229963] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:53,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:53,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:22:53,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378211123] [2021-10-28 23:22:53,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:22:53,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:53,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:22:53,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:22:53,745 INFO L87 Difference]: Start difference. First operand 22 states and 26 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 23:22:53,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:53,755 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-10-28 23:22:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:22:53,755 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 23:22:53,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:53,756 INFO L225 Difference]: With dead ends: 22 [2021-10-28 23:22:53,756 INFO L226 Difference]: Without dead ends: 21 [2021-10-28 23:22:53,757 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 23:22:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-28 23:22:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-28 23:22:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.5625) internal successors, (25), 20 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) [2021-10-28 23:22:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-28 23:22:53,762 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 5 [2021-10-28 23:22:53,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:53,762 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-28 23:22:53,762 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 23:22:53,763 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-28 23:22:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 23:22:53,763 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:53,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 23:22:53,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:22:53,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-28 23:22:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:53,765 INFO L85 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-28 23:22:53,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:53,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056378533] [2021-10-28 23:22:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:53,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:53,818 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 23:22:53,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:53,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056378533] [2021-10-28 23:22:53,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056378533] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:53,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:53,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:22:53,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823331293] [2021-10-28 23:22:53,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:22:53,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:53,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:22:53,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:22:53,821 INFO L87 Difference]: Start difference. First operand 21 states and 25 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 23:22:53,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:53,836 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-28 23:22:53,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:22:53,836 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 23:22:53,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:53,837 INFO L225 Difference]: With dead ends: 21 [2021-10-28 23:22:53,837 INFO L226 Difference]: Without dead ends: 19 [2021-10-28 23:22:53,838 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 23:22:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-28 23:22:53,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-28 23:22:53,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.375) internal successors, (22), 18 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) [2021-10-28 23:22:53,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-10-28 23:22:53,842 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 5 [2021-10-28 23:22:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:53,843 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-10-28 23:22:53,843 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 23:22:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-10-28 23:22:53,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:22:53,843 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:53,844 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:22:53,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:22:53,844 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-28 23:22:53,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash 925954989, now seen corresponding path program 1 times [2021-10-28 23:22:53,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:53,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584115797] [2021-10-28 23:22:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:53,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:53,857 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:53,899 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:53,899 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:22:53,900 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 23:22:53,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 23:22:53,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 23:22:53,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 23:22:53,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 23:22:53,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 23:22:53,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:22:53,907 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-10-28 23:22:53,911 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:22:53,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:22:53 BoogieIcfgContainer [2021-10-28 23:22:53,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:22:53,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:22:53,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:22:53,926 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:22:53,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:53" (3/4) ... [2021-10-28 23:22:53,928 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:22:53,963 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:22:53,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:22:53,966 INFO L168 Benchmark]: Toolchain (without parser) took 1475.38 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 50.0 MB in the beginning and 44.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:53,966 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 66.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:22:53,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.00 ms. Allocated memory is still 88.1 MB. Free memory was 49.8 MB in the beginning and 41.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:53,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.48 ms. Allocated memory is still 111.1 MB. Free memory was 91.0 MB in the beginning and 89.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:53,968 INFO L168 Benchmark]: Boogie Preprocessor took 17.72 ms. Allocated memory is still 111.1 MB. Free memory was 89.7 MB in the beginning and 89.1 MB in the end (delta: 625.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:22:53,968 INFO L168 Benchmark]: RCFGBuilder took 258.48 ms. Allocated memory is still 111.1 MB. Free memory was 89.1 MB in the beginning and 80.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:53,969 INFO L168 Benchmark]: TraceAbstraction took 883.26 ms. Allocated memory is still 111.1 MB. Free memory was 80.1 MB in the beginning and 45.9 MB in the end (delta: 34.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:53,970 INFO L168 Benchmark]: Witness Printer took 37.96 ms. Allocated memory is still 111.1 MB. Free memory was 45.9 MB in the beginning and 44.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:53,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 66.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 174.00 ms. Allocated memory is still 88.1 MB. Free memory was 49.8 MB in the beginning and 41.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.48 ms. Allocated memory is still 111.1 MB. Free memory was 91.0 MB in the beginning and 89.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.72 ms. Allocated memory is still 111.1 MB. Free memory was 89.7 MB in the beginning and 89.1 MB in the end (delta: 625.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 258.48 ms. Allocated memory is still 111.1 MB. Free memory was 89.1 MB in the beginning and 80.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 883.26 ms. Allocated memory is still 111.1 MB. Free memory was 80.1 MB in the beginning and 45.9 MB in the end (delta: 34.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Witness Printer took 37.96 ms. Allocated memory is still 111.1 MB. Free memory was 45.9 MB in the beginning and 44.5 MB in the end (delta: 1.5 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: [L18] int x, y, oldx, oldy; [L19] x = __VERIFIER_nondet_int() [L20] y = __VERIFIER_nondet_int() [L21] COND TRUE x > 0 && y > 0 [L22] oldx = x [L23] oldy = y [L24] COND FALSE !(__VERIFIER_nondet_int() != 0) [L28] EXPR oldy - 2 [L28] x = oldy - 2 [L29] oldx + 1 - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: 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, 19 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 71 SDslu, 42 SDs, 0 SdLazy, 48 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, InterpolantAutomatonStates: 16, 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, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 5 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:22:54,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2732d3-2c51-4210-9726-850688c54988/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...