./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3 --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 c49ca63b076bdfdfd4da2b39429bac3c0da8332d ............................................................................................................................................................................................................................................................................................................................................................................................................................. 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-5709675 [2021-10-15 20:27:55,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:27:55,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:27:55,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:27:55,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:27:55,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:27:55,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:27:55,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:27:55,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:27:55,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:27:55,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:27:55,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:27:55,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:27:55,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:27:55,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:27:55,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:27:55,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:27:55,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:27:55,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:27:55,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:27:55,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:27:55,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:27:55,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:27:55,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:27:55,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:27:55,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:27:55,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:27:55,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:27:55,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:27:55,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:27:55,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:27:55,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:27:55,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:27:55,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:27:55,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:27:55,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:27:55,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:27:55,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:27:55,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:27:55,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:27:55,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:27:55,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-15 20:27:55,256 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:27:55,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:27:55,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:27:55,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:27:55,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:27:55,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:27:55,277 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:27:55,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:27:55,278 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 20:27:55,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:27:55,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:27:55,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:27:55,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:27:55,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:27:55,281 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-15 20:27:55,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:27:55,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:27:55,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:27:55,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:27:55,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:27:55,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:27:55,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:27:55,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:27:55,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:27:55,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:27:55,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:27:55,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:27:55,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:27:55,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:27:55,288 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_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c49ca63b076bdfdfd4da2b39429bac3c0da8332d [2021-10-15 20:27:55,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:27:55,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:27:55,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:27:55,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:27:55,660 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:27:55,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c [2021-10-15 20:27:55,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/data/33535d974/51088078612642568491447f49553641/FLAG5d727e3df [2021-10-15 20:27:56,313 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:27:56,314 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c [2021-10-15 20:27:56,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/data/33535d974/51088078612642568491447f49553641/FLAG5d727e3df [2021-10-15 20:27:56,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/data/33535d974/51088078612642568491447f49553641 [2021-10-15 20:27:56,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:27:56,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:27:56,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:27:56,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:27:56,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:27:56,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:56,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553f7ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56, skipping insertion in model container [2021-10-15 20:27:56,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:56,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:27:56,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:27:56,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:27:56,894 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:27:56,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:27:56,949 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:27:56,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56 WrapperNode [2021-10-15 20:27:56,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:27:56,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:27:56,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:27:56,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:27:56,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:56,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:56,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:27:56,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:27:56,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:27:56,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:27:57,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:57,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:57,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:57,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:57,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:57,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:57,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:57,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:27:57,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:27:57,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:27:57,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:27:57,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (1/1) ... [2021-10-15 20:27:57,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:27:57,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:27:57,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:27:57,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:27:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:27:57,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:27:57,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:27:57,336 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-15 20:27:57,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:27:57 BoogieIcfgContainer [2021-10-15 20:27:57,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:27:57,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:27:57,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:27:57,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:27:57,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:27:56" (1/3) ... [2021-10-15 20:27:57,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b9ad9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:27:57, skipping insertion in model container [2021-10-15 20:27:57,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:27:56" (2/3) ... [2021-10-15 20:27:57,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b9ad9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:27:57, skipping insertion in model container [2021-10-15 20:27:57,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:27:57" (3/3) ... [2021-10-15 20:27:57,349 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig3.c [2021-10-15 20:27:57,355 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:27:57,355 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-15 20:27:57,415 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:27:57,424 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:27:57,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-15 20:27:57,440 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) [2021-10-15 20:27:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-15 20:27:57,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:27:57,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-15 20:27:57,447 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)] === [2021-10-15 20:27:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:27:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-15 20:27:57,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:27:57,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946455450] [2021-10-15 20:27:57,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:27:57,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:27:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:27:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:27:57,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:27:57,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946455450] [2021-10-15 20:27:57,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946455450] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:27:57,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:27:57,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:27:57,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754612098] [2021-10-15 20:27:57,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:27:57,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:27:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:27:57,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:27:57,779 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) [2021-10-15 20:27:57,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:27:57,903 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-10-15 20:27:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:27:57,926 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 [2021-10-15 20:27:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:27:57,951 INFO L225 Difference]: With dead ends: 46 [2021-10-15 20:27:57,951 INFO L226 Difference]: Without dead ends: 29 [2021-10-15 20:27:57,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:27:57,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-15 20:27:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2021-10-15 20:27:58,003 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) [2021-10-15 20:27:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-15 20:27:58,006 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 4 [2021-10-15 20:27:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:27:58,007 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-15 20:27:58,007 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) [2021-10-15 20:27:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-15 20:27:58,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-15 20:27:58,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:27:58,008 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-15 20:27:58,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:27:58,009 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)] === [2021-10-15 20:27:58,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:27:58,010 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-15 20:27:58,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:27:58,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335203024] [2021-10-15 20:27:58,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:27:58,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:27:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:27:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:27:58,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:27:58,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335203024] [2021-10-15 20:27:58,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335203024] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:27:58,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:27:58,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:27:58,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739057615] [2021-10-15 20:27:58,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:27:58,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:27:58,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:27:58,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:27:58,067 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) [2021-10-15 20:27:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:27:58,161 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-10-15 20:27:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:27:58,163 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 [2021-10-15 20:27:58,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:27:58,166 INFO L225 Difference]: With dead ends: 31 [2021-10-15 20:27:58,167 INFO L226 Difference]: Without dead ends: 30 [2021-10-15 20:27:58,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:27:58,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-15 20:27:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2021-10-15 20:27:58,177 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) [2021-10-15 20:27:58,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-15 20:27:58,179 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2021-10-15 20:27:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:27:58,181 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-15 20:27:58,182 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) [2021-10-15 20:27:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-15 20:27:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-15 20:27:58,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:27:58,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-15 20:27:58,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:27:58,185 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)] === [2021-10-15 20:27:58,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:27:58,189 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-15 20:27:58,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:27:58,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939191133] [2021-10-15 20:27:58,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:27:58,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:27:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:27:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:27:58,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:27:58,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939191133] [2021-10-15 20:27:58,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939191133] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:27:58,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:27:58,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:27:58,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231927038] [2021-10-15 20:27:58,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:27:58,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:27:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:27:58,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:27:58,246 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) [2021-10-15 20:27:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:27:58,258 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-10-15 20:27:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:27:58,259 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 [2021-10-15 20:27:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:27:58,261 INFO L225 Difference]: With dead ends: 22 [2021-10-15 20:27:58,261 INFO L226 Difference]: Without dead ends: 21 [2021-10-15 20:27:58,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:27:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-15 20:27:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-15 20:27:58,267 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) [2021-10-15 20:27:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-15 20:27:58,268 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 5 [2021-10-15 20:27:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:27:58,269 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-15 20:27:58,269 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) [2021-10-15 20:27:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-15 20:27:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-15 20:27:58,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:27:58,270 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-15 20:27:58,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:27:58,271 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)] === [2021-10-15 20:27:58,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:27:58,272 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-15 20:27:58,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:27:58,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927917848] [2021-10-15 20:27:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:27:58,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:27:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:27:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:27:58,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:27:58,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927917848] [2021-10-15 20:27:58,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927917848] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:27:58,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:27:58,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:27:58,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081999549] [2021-10-15 20:27:58,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:27:58,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:27:58,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:27:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:27:58,318 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) [2021-10-15 20:27:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:27:58,337 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-15 20:27:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:27:58,338 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 [2021-10-15 20:27:58,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:27:58,339 INFO L225 Difference]: With dead ends: 21 [2021-10-15 20:27:58,339 INFO L226 Difference]: Without dead ends: 19 [2021-10-15 20:27:58,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:27:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-15 20:27:58,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-15 20:27:58,344 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) [2021-10-15 20:27:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-10-15 20:27:58,346 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 5 [2021-10-15 20:27:58,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:27:58,346 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-10-15 20:27:58,347 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) [2021-10-15 20:27:58,347 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-10-15 20:27:58,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-15 20:27:58,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:27:58,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-15 20:27:58,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 20:27:58,349 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)] === [2021-10-15 20:27:58,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:27:58,350 INFO L82 PathProgramCache]: Analyzing trace with hash 925954989, now seen corresponding path program 1 times [2021-10-15 20:27:58,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:27:58,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667301209] [2021-10-15 20:27:58,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:27:58,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:27:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:27:58,364 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:27:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:27:58,393 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:27:58,393 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:27:58,395 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:27:58,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:27:58,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:27:58,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:27:58,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:27:58,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:27:58,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 20:27:58,411 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:27:58,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:27:58 BoogieIcfgContainer [2021-10-15 20:27:58,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:27:58,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:27:58,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:27:58,437 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:27:58,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:27:57" (3/4) ... [2021-10-15 20:27:58,440 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 20:27:58,516 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:27:58,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:27:58,521 INFO L168 Benchmark]: Toolchain (without parser) took 1849.23 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 61.7 MB in the beginning and 101.7 MB in the end (delta: -40.0 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:58,522 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory is still 77.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:27:58,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.00 ms. Allocated memory is still 104.9 MB. Free memory was 61.5 MB in the beginning and 81.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:58,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.18 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 79.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:27:58,524 INFO L168 Benchmark]: Boogie Preprocessor took 29.91 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.9 MB in the end (delta: 822.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:58,529 INFO L168 Benchmark]: RCFGBuilder took 309.07 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 70.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:58,535 INFO L168 Benchmark]: TraceAbstraction took 1093.86 ms. Allocated memory is still 104.9 MB. Free memory was 69.8 MB in the beginning and 35.8 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:58,536 INFO L168 Benchmark]: Witness Printer took 80.38 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 35.8 MB in the beginning and 101.7 MB in the end (delta: -65.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:27:58,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory is still 77.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.00 ms. Allocated memory is still 104.9 MB. Free memory was 61.5 MB in the beginning and 81.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.18 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 79.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.91 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.9 MB in the end (delta: 822.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 309.07 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 70.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1093.86 ms. Allocated memory is still 104.9 MB. Free memory was 69.8 MB in the beginning and 35.8 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Witness Printer took 80.38 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 35.8 MB in the beginning and 101.7 MB in the end (delta: -65.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x = __VERIFIER_nondet_int(); [L13] int y = __VERIFIER_nondet_int(); [L14] COND TRUE x > 0 && y > 0 [L15] int old_x = x; [L16] int old_y = y; [L17] COND FALSE !(__VERIFIER_nondet_int()) [L21] EXPR old_y - 2 [L21] x = old_y - 2 [L22] old_x + 1 - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 22]: 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: 995.9ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 12.4ms, AutomataDifference: 368.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 49 SDtfs, 71 SDslu, 42 SDs, 0 SdLazy, 48 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 140.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.6ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.5ms SsaConstructionTime, 66.3ms SatisfiabilityAnalysisTime, 235.3ms 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! [2021-10-15 20:27:58,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652217fc-d184-4c0c-9192-511de7f121ab/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...