./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer --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 85017c4a5a64f245bd703090448e8d5785d54b75 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:44,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:44,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:44,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:44,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:44,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:44,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:44,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:44,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:44,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:44,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:44,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:44,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:44,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:44,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:44,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:44,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:44,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:44,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:44,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:44,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:44,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:44,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:44,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:44,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:44,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:44,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:44,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:44,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:44,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:44,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:44,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:44,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:44,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:44,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:44,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:44,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:44,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:44,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:44,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:44,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:44,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 02:56:44,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:44,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:44,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:44,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:44,422 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:44,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:44,422 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:44,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:44,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:44,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:44,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:44,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:44,425 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 02:56:44,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:44,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:44,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:44,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:44,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:44,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:44,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:44,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:44,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:44,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:44,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:44,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:44,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:44,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:44,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:44,430 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-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85017c4a5a64f245bd703090448e8d5785d54b75 [2020-11-28 02:56:44,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:44,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:44,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:44,761 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:44,762 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:44,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2020-11-28 02:56:44,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/data/92e7dbf95/45965660ba894586ae913a6de0558b83/FLAG0f68beb02 [2020-11-28 02:56:45,348 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:45,349 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2020-11-28 02:56:45,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/data/92e7dbf95/45965660ba894586ae913a6de0558b83/FLAG0f68beb02 [2020-11-28 02:56:45,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/data/92e7dbf95/45965660ba894586ae913a6de0558b83 [2020-11-28 02:56:45,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:45,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:45,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:45,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:45,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:45,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:45,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cfd43cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45, skipping insertion in model container [2020-11-28 02:56:45,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:45,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:45,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:45,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:45,878 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:45,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:45,931 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:45,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45 WrapperNode [2020-11-28 02:56:45,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:45,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:45,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:45,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:45,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:45,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:45,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:45,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:45,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:45,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:45,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:45,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:45,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:45,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:45,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:45,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:45,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (1/1) ... [2020-11-28 02:56:46,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:46,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:46,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:46,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:46,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:46,238 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:46,239 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 02:56:46,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:46 BoogieIcfgContainer [2020-11-28 02:56:46,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:46,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:46,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:46,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:46,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:45" (1/3) ... [2020-11-28 02:56:46,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61628c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:46, skipping insertion in model container [2020-11-28 02:56:46,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:45" (2/3) ... [2020-11-28 02:56:46,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61628c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:46, skipping insertion in model container [2020-11-28 02:56:46,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:46" (3/3) ... [2020-11-28 02:56:46,250 INFO L111 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction.c [2020-11-28 02:56:46,262 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:46,266 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 02:56:46,279 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 02:56:46,321 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:46,321 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:46,321 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:46,322 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:46,322 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:46,322 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:46,322 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:46,323 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 02:56:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 02:56:46,345 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:46,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 02:56:46,347 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:46,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:46,357 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-28 02:56:46,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:46,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876924040] [2020-11-28 02:56:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:46,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876924040] [2020-11-28 02:56:46,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:46,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:56:46,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205535372] [2020-11-28 02:56:46,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:46,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:46,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:46,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:46,576 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-11-28 02:56:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:46,680 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-11-28 02:56:46,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:46,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-28 02:56:46,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:46,696 INFO L225 Difference]: With dead ends: 26 [2020-11-28 02:56:46,697 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 02:56:46,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:46,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 02:56:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-28 02:56:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 02:56:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 02:56:46,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2020-11-28 02:56:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:46,734 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 02:56:46,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 02:56:46,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 02:56:46,735 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:46,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 02:56:46,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:46,736 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:46,737 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-11-28 02:56:46,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:46,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072473075] [2020-11-28 02:56:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:46,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072473075] [2020-11-28 02:56:46,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:46,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:46,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533233691] [2020-11-28 02:56:46,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:46,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:46,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:46,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:46,773 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-11-28 02:56:46,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:46,888 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-11-28 02:56:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:46,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 02:56:46,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:46,890 INFO L225 Difference]: With dead ends: 17 [2020-11-28 02:56:46,890 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 02:56:46,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 02:56:46,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-11-28 02:56:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 02:56:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-28 02:56:46,894 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2020-11-28 02:56:46,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:46,895 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-28 02:56:46,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:46,895 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-28 02:56:46,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 02:56:46,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:46,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:56:46,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:46,896 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:46,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:46,897 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-11-28 02:56:46,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:46,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002365558] [2020-11-28 02:56:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:46,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002365558] [2020-11-28 02:56:46,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:46,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:56:46,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059478263] [2020-11-28 02:56:46,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:46,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:46,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:46,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:46,953 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2020-11-28 02:56:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:46,971 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-28 02:56:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:46,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 02:56:46,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:46,973 INFO L225 Difference]: With dead ends: 14 [2020-11-28 02:56:46,973 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 02:56:46,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 02:56:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 02:56:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 02:56:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-28 02:56:46,977 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2020-11-28 02:56:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:46,985 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-28 02:56:46,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-28 02:56:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:56:46,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:46,987 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:46,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:46,987 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:46,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:46,988 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2020-11-28 02:56:46,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:46,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649070699] [2020-11-28 02:56:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:47,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649070699] [2020-11-28 02:56:47,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770198043] [2020-11-28 02:56:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 02:56:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:47,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:47,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:56:47,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2020-11-28 02:56:47,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609314836] [2020-11-28 02:56:47,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:47,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:47,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:47,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:47,285 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-11-28 02:56:47,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:47,476 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-28 02:56:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:47,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 02:56:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:47,478 INFO L225 Difference]: With dead ends: 14 [2020-11-28 02:56:47,478 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 02:56:47,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:56:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 02:56:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-28 02:56:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 02:56:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 02:56:47,482 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2020-11-28 02:56:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:47,483 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 02:56:47,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 02:56:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:56:47,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:47,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-28 02:56:47,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:47,700 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:47,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:47,701 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2020-11-28 02:56:47,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:47,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942133689] [2020-11-28 02:56:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:47,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942133689] [2020-11-28 02:56:47,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028625771] [2020-11-28 02:56:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:47,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:47,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:47,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-11-28 02:56:47,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539633078] [2020-11-28 02:56:47,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:47,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:47,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:47,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:47,800 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2020-11-28 02:56:47,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:47,906 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-28 02:56:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:47,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-28 02:56:47,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:47,908 INFO L225 Difference]: With dead ends: 20 [2020-11-28 02:56:47,908 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 02:56:47,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:47,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 02:56:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-28 02:56:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 02:56:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-28 02:56:47,913 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2020-11-28 02:56:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:47,913 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-28 02:56:47,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-28 02:56:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:56:47,914 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:47,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1] [2020-11-28 02:56:48,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:48,132 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:48,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:48,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1635256875, now seen corresponding path program 2 times [2020-11-28 02:56:48,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:48,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45956091] [2020-11-28 02:56:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:48,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45956091] [2020-11-28 02:56:48,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634567768] [2020-11-28 02:56:48,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 02:56:48,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:56:48,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:48,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:56:48,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:48,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:48,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-28 02:56:48,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246004572] [2020-11-28 02:56:48,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:48,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:48,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:48,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:48,314 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 7 states. [2020-11-28 02:56:48,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:48,425 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-28 02:56:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:56:48,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-28 02:56:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:48,426 INFO L225 Difference]: With dead ends: 25 [2020-11-28 02:56:48,426 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 02:56:48,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:56:48,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 02:56:48,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-28 02:56:48,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 02:56:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-28 02:56:48,432 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 14 [2020-11-28 02:56:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:48,432 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-28 02:56:48,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:48,433 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-28 02:56:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:56:48,433 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:48,433 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1] [2020-11-28 02:56:48,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:48,648 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash 637353757, now seen corresponding path program 3 times [2020-11-28 02:56:48,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:48,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278418182] [2020-11-28 02:56:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:48,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278418182] [2020-11-28 02:56:48,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621114249] [2020-11-28 02:56:48,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:48,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 02:56:48,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:48,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:48,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-28 02:56:48,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:56:48,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2020-11-28 02:56:48,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758421778] [2020-11-28 02:56:48,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:48,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:48,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:48,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:56:48,822 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 5 states. [2020-11-28 02:56:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:48,870 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-28 02:56:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:48,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-28 02:56:48,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:48,871 INFO L225 Difference]: With dead ends: 22 [2020-11-28 02:56:48,871 INFO L226 Difference]: Without dead ends: 21 [2020-11-28 02:56:48,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:56:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-28 02:56:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-28 02:56:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 02:56:48,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-11-28 02:56:48,876 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2020-11-28 02:56:48,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:48,877 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-11-28 02:56:48,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:48,877 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-11-28 02:56:48,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:56:48,878 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:48,878 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2020-11-28 02:56:49,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:49,079 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:49,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:49,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 1 times [2020-11-28 02:56:49,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:49,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060332643] [2020-11-28 02:56:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:49,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060332643] [2020-11-28 02:56:49,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858047319] [2020-11-28 02:56:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:49,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:56:49,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:49,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:49,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-28 02:56:49,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966424045] [2020-11-28 02:56:49,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:49,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:49,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:49,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:49,256 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2020-11-28 02:56:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:49,317 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-11-28 02:56:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:49,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-28 02:56:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:49,319 INFO L225 Difference]: With dead ends: 28 [2020-11-28 02:56:49,319 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 02:56:49,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 02:56:49,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-11-28 02:56:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 02:56:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-28 02:56:49,324 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2020-11-28 02:56:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:49,325 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-28 02:56:49,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-28 02:56:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:56:49,326 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:49,326 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-11-28 02:56:49,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:49,548 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:49,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:49,548 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2020-11-28 02:56:49,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:49,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143790999] [2020-11-28 02:56:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:49,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143790999] [2020-11-28 02:56:49,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347370257] [2020-11-28 02:56:49,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:49,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:56:49,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:49,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:56:49,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:49,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:49,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-28 02:56:49,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769359254] [2020-11-28 02:56:49,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:49,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:49,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:49,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:49,710 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 7 states. [2020-11-28 02:56:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:49,765 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-11-28 02:56:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:49,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-28 02:56:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:49,766 INFO L225 Difference]: With dead ends: 33 [2020-11-28 02:56:49,766 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 02:56:49,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 02:56:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-11-28 02:56:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 02:56:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-28 02:56:49,771 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-11-28 02:56:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:49,778 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-28 02:56:49,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-28 02:56:49,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:56:49,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:49,780 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2020-11-28 02:56:49,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:50,000 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:50,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:50,000 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 3 times [2020-11-28 02:56:50,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:50,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570294924] [2020-11-28 02:56:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:50,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570294924] [2020-11-28 02:56:50,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060673533] [2020-11-28 02:56:50,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:50,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-28 02:56:50,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:50,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:56:50,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 02:56:50,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:50,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2020-11-28 02:56:50,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812772399] [2020-11-28 02:56:50,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 02:56:50,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:50,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 02:56:50,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-11-28 02:56:50,332 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 15 states. [2020-11-28 02:56:51,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:51,172 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-11-28 02:56:51,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-28 02:56:51,172 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2020-11-28 02:56:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:51,173 INFO L225 Difference]: With dead ends: 38 [2020-11-28 02:56:51,173 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:56:51,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2020-11-28 02:56:51,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:56:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:56:51,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:56:51,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:56:51,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-11-28 02:56:51,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:51,175 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:51,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 02:56:51,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:51,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:56:51,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 02:56:51,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:56:51,472 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-11-28 02:56:51,472 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:56:51,472 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 02:56:51,472 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-28 02:56:51,473 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-28 02:56:51,473 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-11-28 02:56:51,473 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 02:56:51,473 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:56:51,473 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:56:51,473 INFO L277 CegarLoopResult]: At program point L22(lines 14 23) the Hoare annotation is: true [2020-11-28 02:56:51,473 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-28 02:56:51,473 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-28 02:56:51,473 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 21) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483648) 2) 1)) (<= 2 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 2147483647)) (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 1) (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) 2147483648))) [2020-11-28 02:56:51,474 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2020-11-28 02:56:51,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:51 BoogieIcfgContainer [2020-11-28 02:56:51,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:51,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:51,499 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:51,499 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:51,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:46" (3/4) ... [2020-11-28 02:56:51,503 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:56:51,516 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 02:56:51,516 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 02:56:51,555 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e02ad9e6-4b68-492f-8899-bd42cae4ccb6/bin/uautomizer/witness.graphml [2020-11-28 02:56:51,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:51,558 INFO L168 Benchmark]: Toolchain (without parser) took 5837.04 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 51.9 MB in the beginning and 50.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:51,558 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:51,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.77 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 51.6 MB in the beginning and 80.8 MB in the end (delta: -29.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:51,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.26 ms. Allocated memory is still 102.8 MB. Free memory was 80.8 MB in the beginning and 79.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:51,560 INFO L168 Benchmark]: Boogie Preprocessor took 21.93 ms. Allocated memory is still 102.8 MB. Free memory was 79.4 MB in the beginning and 78.9 MB in the end (delta: 467.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:51,560 INFO L168 Benchmark]: RCFGBuilder took 238.15 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 69.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:51,561 INFO L168 Benchmark]: TraceAbstraction took 5255.68 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 69.3 MB in the beginning and 52.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:51,561 INFO L168 Benchmark]: Witness Printer took 56.91 ms. Allocated memory is still 123.7 MB. Free memory was 52.6 MB in the beginning and 50.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:51,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 216.77 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 51.6 MB in the beginning and 80.8 MB in the end (delta: -29.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.26 ms. Allocated memory is still 102.8 MB. Free memory was 80.8 MB in the beginning and 79.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.93 ms. Allocated memory is still 102.8 MB. Free memory was 79.4 MB in the beginning and 78.9 MB in the end (delta: 467.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 238.15 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 69.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5255.68 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 69.3 MB in the beginning and 52.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. * Witness Printer took 56.91 ms. Allocated memory is still 123.7 MB. Free memory was 52.6 MB in the beginning and 50.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((y <= (x * -1 + 2147483648) / 2 + 1 && 2 <= y) && y <= 2147483647) || ((1 <= y && y <= 1) && x + y <= 2147483648) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 97 SDslu, 19 SDs, 0 SdLazy, 252 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 32 HoareAnnotationTreeSize, 2 FomulaSimplifications, 180 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 263 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 14870 SizeOfPredicates, 2 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 75/366 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...