./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/TwoWay.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_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/TwoWay.c -s /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/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 dd635190a9aa277670265f46b90ecce0c321a2a9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:39:36,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:39:36,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:39:36,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:39:36,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:39:36,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:39:36,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:39:36,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:39:36,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:39:36,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:39:36,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:39:36,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:39:36,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:39:36,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:39:36,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:39:36,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:39:36,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:39:36,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:39:36,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:39:36,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:39:36,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:39:36,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:39:36,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:39:36,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:39:36,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:39:36,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:39:36,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:39:36,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:39:36,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:39:36,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:39:36,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:39:36,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:39:36,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:39:36,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:39:36,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:39:36,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:39:36,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:39:36,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:39:36,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:39:36,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:39:36,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:39:36,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 18:39:36,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:39:36,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:39:36,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:39:36,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:39:36,431 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:39:36,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:39:36,432 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:39:36,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:39:36,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:39:36,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:39:36,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:39:36,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:39:36,434 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 18:39:36,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:39:36,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:39:36,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:39:36,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:39:36,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:39:36,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:39:36,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:39:36,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:39:36,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:39:36,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:39:36,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:39:36,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:39:36,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:39:36,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:39:36,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:39:36,439 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_99e08532-8925-4a09-9f33-a9a94e33a098/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd635190a9aa277670265f46b90ecce0c321a2a9 [2020-11-29 18:39:36,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:39:36,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:39:36,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:39:36,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:39:36,801 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:39:36,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/TwoWay.c [2020-11-29 18:39:36,915 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/data/d8bee8612/29cdc50bb7c34daa984412b668434949/FLAG3bdf24b0a [2020-11-29 18:39:37,412 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:39:37,413 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/sv-benchmarks/c/termination-numeric/TwoWay.c [2020-11-29 18:39:37,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/data/d8bee8612/29cdc50bb7c34daa984412b668434949/FLAG3bdf24b0a [2020-11-29 18:39:37,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/data/d8bee8612/29cdc50bb7c34daa984412b668434949 [2020-11-29 18:39:37,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:39:37,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:39:37,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:39:37,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:39:37,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:39:37,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:39:37" (1/1) ... [2020-11-29 18:39:37,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b635620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:37, skipping insertion in model container [2020-11-29 18:39:37,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:39:37" (1/1) ... [2020-11-29 18:39:37,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:39:37,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:39:37,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:39:38,002 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:39:38,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:39:38,068 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:39:38,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38 WrapperNode [2020-11-29 18:39:38,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:39:38,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:39:38,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:39:38,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:39:38,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (1/1) ... [2020-11-29 18:39:38,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (1/1) ... [2020-11-29 18:39:38,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:39:38,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:39:38,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:39:38,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:39:38,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (1/1) ... [2020-11-29 18:39:38,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (1/1) ... [2020-11-29 18:39:38,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (1/1) ... [2020-11-29 18:39:38,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (1/1) ... [2020-11-29 18:39:38,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (1/1) ... [2020-11-29 18:39:38,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (1/1) ... [2020-11-29 18:39:38,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (1/1) ... [2020-11-29 18:39:38,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:39:38,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:39:38,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:39:38,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:39:38,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/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 [2020-11-29 18:39:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2020-11-29 18:39:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2020-11-29 18:39:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:39:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:39:38,581 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:39:38,582 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-29 18:39:38,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:39:38 BoogieIcfgContainer [2020-11-29 18:39:38,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:39:38,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:39:38,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:39:38,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:39:38,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:39:37" (1/3) ... [2020-11-29 18:39:38,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baaaed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:39:38, skipping insertion in model container [2020-11-29 18:39:38,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:38" (2/3) ... [2020-11-29 18:39:38,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baaaed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:39:38, skipping insertion in model container [2020-11-29 18:39:38,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:39:38" (3/3) ... [2020-11-29 18:39:38,620 INFO L111 eAbstractionObserver]: Analyzing ICFG TwoWay.c [2020-11-29 18:39:38,633 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:39:38,638 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 18:39:38,653 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 18:39:38,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:39:38,716 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:39:38,716 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:39:38,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:39:38,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:39:38,717 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:39:38,717 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:39:38,717 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:39:38,753 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-29 18:39:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 18:39:38,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:39:38,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:39:38,761 INFO L429 AbstractCegarLoop]: === Iteration 1 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:39:38,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:38,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939443, now seen corresponding path program 1 times [2020-11-29 18:39:38,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:38,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204889086] [2020-11-29 18:39:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:39:39,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204889086] [2020-11-29 18:39:39,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:39:39,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:39:39,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656222792] [2020-11-29 18:39:39,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:39:39,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:39:39,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:39:39,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:39:39,163 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2020-11-29 18:39:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:39:39,535 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-11-29 18:39:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:39:39,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-11-29 18:39:39,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:39:39,556 INFO L225 Difference]: With dead ends: 56 [2020-11-29 18:39:39,556 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 18:39:39,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:39:39,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 18:39:39,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2020-11-29 18:39:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 18:39:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2020-11-29 18:39:39,637 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 8 [2020-11-29 18:39:39,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:39:39,638 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2020-11-29 18:39:39,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:39:39,638 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2020-11-29 18:39:39,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 18:39:39,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:39:39,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:39:39,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:39:39,640 INFO L429 AbstractCegarLoop]: === Iteration 2 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:39:39,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:39,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939635, now seen corresponding path program 1 times [2020-11-29 18:39:39,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:39,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319158258] [2020-11-29 18:39:39,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:39:39,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319158258] [2020-11-29 18:39:39,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:39:39,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:39:39,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825485406] [2020-11-29 18:39:39,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:39:39,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:39:39,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:39:39,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:39:39,721 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2020-11-29 18:39:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:39:39,764 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2020-11-29 18:39:39,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:39:39,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 18:39:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:39:39,767 INFO L225 Difference]: With dead ends: 45 [2020-11-29 18:39:39,767 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 18:39:39,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:39:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 18:39:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 18:39:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 18:39:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-29 18:39:39,775 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2020-11-29 18:39:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:39:39,776 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-29 18:39:39,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:39:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-29 18:39:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 18:39:39,777 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:39:39,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:39:39,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:39:39,778 INFO L429 AbstractCegarLoop]: === Iteration 3 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:39:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:39,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2051452074, now seen corresponding path program 1 times [2020-11-29 18:39:39,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:39,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012051238] [2020-11-29 18:39:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:39:39,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012051238] [2020-11-29 18:39:39,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:39:39,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:39:39,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564987472] [2020-11-29 18:39:39,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:39:39,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:39:39,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:39:39,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:39:39,825 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-11-29 18:39:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:39:39,873 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-11-29 18:39:39,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:39:39,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 18:39:39,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:39:39,875 INFO L225 Difference]: With dead ends: 18 [2020-11-29 18:39:39,875 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 18:39:39,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:39:39,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 18:39:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 18:39:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 18:39:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-29 18:39:39,890 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-11-29 18:39:39,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:39:39,890 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-29 18:39:39,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:39:39,891 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-29 18:39:39,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 18:39:39,892 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:39:39,892 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:39:39,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:39:39,893 INFO L429 AbstractCegarLoop]: === Iteration 4 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:39:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:39,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2048642091, now seen corresponding path program 1 times [2020-11-29 18:39:39,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:39,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626365567] [2020-11-29 18:39:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:39,911 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:39:39,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31849185] [2020-11-29 18:39:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:39:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:39,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:39:39,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 18:39:40,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626365567] [2020-11-29 18:39:40,057 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:39:40,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31849185] [2020-11-29 18:39:40,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:39:40,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:39:40,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540046273] [2020-11-29 18:39:40,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:39:40,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:39:40,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:39:40,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:39:40,060 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-11-29 18:39:40,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:39:40,181 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-11-29 18:39:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:39:40,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 18:39:40,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:39:40,186 INFO L225 Difference]: With dead ends: 24 [2020-11-29 18:39:40,186 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 18:39:40,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:39:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 18:39:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-11-29 18:39:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 18:39:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-29 18:39:40,193 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2020-11-29 18:39:40,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:39:40,193 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-29 18:39:40,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:39:40,194 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-29 18:39:40,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 18:39:40,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:39:40,195 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:39:40,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:39:40,396 INFO L429 AbstractCegarLoop]: === Iteration 5 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:39:40,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:40,397 INFO L82 PathProgramCache]: Analyzing trace with hash -916604565, now seen corresponding path program 1 times [2020-11-29 18:39:40,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:40,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917641534] [2020-11-29 18:39:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:40,412 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:39:40,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903105624] [2020-11-29 18:39:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/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 [2020-11-29 18:39:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:40,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 18:39:40,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 18:39:40,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917641534] [2020-11-29 18:39:40,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:39:40,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903105624] [2020-11-29 18:39:40,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:39:40,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 18:39:40,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959273661] [2020-11-29 18:39:40,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 18:39:40,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:39:40,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 18:39:40,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-29 18:39:40,625 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 8 states. [2020-11-29 18:39:40,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:39:40,941 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-11-29 18:39:40,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:39:40,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-29 18:39:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:39:40,943 INFO L225 Difference]: With dead ends: 23 [2020-11-29 18:39:40,943 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 18:39:40,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:39:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 18:39:40,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-29 18:39:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 18:39:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-11-29 18:39:40,949 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2020-11-29 18:39:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:39:40,950 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-11-29 18:39:40,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 18:39:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-11-29 18:39:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 18:39:40,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:39:40,951 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:39:41,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:39:41,169 INFO L429 AbstractCegarLoop]: === Iteration 6 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:39:41,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:41,170 INFO L82 PathProgramCache]: Analyzing trace with hash 37921722, now seen corresponding path program 1 times [2020-11-29 18:39:41,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:41,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245374829] [2020-11-29 18:39:41,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:41,188 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:39:41,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108578764] [2020-11-29 18:39:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:39:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:41,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 18:39:41,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 18:39:41,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245374829] [2020-11-29 18:39:41,595 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:39:41,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108578764] [2020-11-29 18:39:41,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:39:41,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 18:39:41,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54456080] [2020-11-29 18:39:41,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 18:39:41,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:39:41,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 18:39:41,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:39:41,600 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2020-11-29 18:39:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:39:41,926 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-11-29 18:39:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:39:41,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-11-29 18:39:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:39:41,931 INFO L225 Difference]: With dead ends: 29 [2020-11-29 18:39:41,931 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 18:39:41,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:39:41,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 18:39:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-11-29 18:39:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 18:39:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-11-29 18:39:41,942 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 27 [2020-11-29 18:39:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:39:41,943 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-11-29 18:39:41,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 18:39:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-11-29 18:39:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 18:39:41,945 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:39:41,945 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:39:42,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:39:42,146 INFO L429 AbstractCegarLoop]: === Iteration 7 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:39:42,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:42,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1175573436, now seen corresponding path program 1 times [2020-11-29 18:39:42,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:42,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781435784] [2020-11-29 18:39:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:42,161 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:39:42,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612510137] [2020-11-29 18:39:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/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 [2020-11-29 18:39:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:39:42,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 18:39:42,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 18:39:42,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781435784] [2020-11-29 18:39:42,579 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:39:42,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612510137] [2020-11-29 18:39:42,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:39:42,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 18:39:42,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064074845] [2020-11-29 18:39:42,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:39:42,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:39:42,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:39:42,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:39:42,582 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states. [2020-11-29 18:39:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:39:44,310 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-11-29 18:39:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 18:39:44,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-11-29 18:39:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:39:44,325 INFO L225 Difference]: With dead ends: 28 [2020-11-29 18:39:44,326 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 18:39:44,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-11-29 18:39:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 18:39:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-29 18:39:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:39:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-29 18:39:44,331 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 28 [2020-11-29 18:39:44,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:39:44,331 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-29 18:39:44,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:39:44,331 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-29 18:39:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 18:39:44,333 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:39:44,333 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 18:39:44,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:39:44,553 INFO L429 AbstractCegarLoop]: === Iteration 8 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:39:44,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:44,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1826938493, now seen corresponding path program 2 times [2020-11-29 18:39:44,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:44,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033581270] [2020-11-29 18:39:44,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:44,590 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:39:44,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816061063] [2020-11-29 18:39:44,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/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 [2020-11-29 18:39:44,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:39:44,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:39:44,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 18:39:44,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-29 18:39:45,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033581270] [2020-11-29 18:39:45,048 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:39:45,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816061063] [2020-11-29 18:39:45,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:39:45,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-29 18:39:45,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812594869] [2020-11-29 18:39:45,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 18:39:45,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:39:45,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 18:39:45,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:39:45,050 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 16 states. [2020-11-29 18:39:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:39:47,686 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-11-29 18:39:47,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 18:39:47,693 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-11-29 18:39:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:39:47,695 INFO L225 Difference]: With dead ends: 29 [2020-11-29 18:39:47,695 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 18:39:47,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-11-29 18:39:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 18:39:47,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-11-29 18:39:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 18:39:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-11-29 18:39:47,701 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 44 [2020-11-29 18:39:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:39:47,702 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-11-29 18:39:47,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 18:39:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-11-29 18:39:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 18:39:47,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:39:47,704 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 18:39:47,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:39:47,904 INFO L429 AbstractCegarLoop]: === Iteration 9 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:39:47,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:39:47,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1355949953, now seen corresponding path program 2 times [2020-11-29 18:39:47,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:39:47,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440923342] [2020-11-29 18:39:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:39:47,925 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:39:47,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041188350] [2020-11-29 18:39:47,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/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 [2020-11-29 18:39:48,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:39:48,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:39:48,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 18:39:48,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:39:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-29 18:39:51,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440923342] [2020-11-29 18:39:51,912 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:39:51,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041188350] [2020-11-29 18:39:51,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:39:51,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-29 18:39:51,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57530707] [2020-11-29 18:39:51,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 18:39:51,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:39:51,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 18:39:51,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=230, Unknown=2, NotChecked=0, Total=272 [2020-11-29 18:39:51,917 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 17 states. [2020-11-29 18:39:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:39:52,608 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-11-29 18:39:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 18:39:52,609 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2020-11-29 18:39:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:39:52,610 INFO L225 Difference]: With dead ends: 26 [2020-11-29 18:39:52,610 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:39:52,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=123, Invalid=525, Unknown=2, NotChecked=0, Total=650 [2020-11-29 18:39:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:39:52,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:39:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:39:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:39:52,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-11-29 18:39:52,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:39:52,612 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:39:52,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 18:39:52,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:39:52,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:39:52,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:39:52,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 18:39:52,941 INFO L274 CegarLoopResult]: For program point L31(lines 31 35) no Hoare annotation was computed. [2020-11-29 18:39:52,941 INFO L270 CegarLoopResult]: At program point L31-2(lines 31 35) the Hoare annotation is: (or (not (<= |twoWay_#in~n| 2147483647)) (let ((.cse0 (+ twoWay_~m~0 1))) (and (<= .cse0 |twoWay_#in~n|) (<= 1 twoWay_~terminate) (<= |twoWay_#in~n| twoWay_~n) (<= 0 |twoWay_#in~n|) (<= |twoWay_#in~n| .cse0) (<= twoWay_~n |twoWay_#in~n|))) (not (<= 1 |twoWay_#in~terminate|))) [2020-11-29 18:39:52,941 INFO L274 CegarLoopResult]: For program point L27(lines 27 37) no Hoare annotation was computed. [2020-11-29 18:39:52,941 INFO L274 CegarLoopResult]: For program point twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2020-11-29 18:39:52,941 INFO L274 CegarLoopResult]: For program point twoWayFINAL(lines 26 38) no Hoare annotation was computed. [2020-11-29 18:39:52,941 INFO L274 CegarLoopResult]: For program point twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2020-11-29 18:39:52,941 INFO L274 CegarLoopResult]: For program point twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L277 CegarLoopResult]: At program point twoWayENTRY(lines 26 38) the Hoare annotation is: true [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point twoWayEXIT(lines 26 38) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 18:39:52,942 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-29 18:39:52,943 INFO L274 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-11-29 18:39:52,943 INFO L274 CegarLoopResult]: For program point L45(lines 45 46) no Hoare annotation was computed. [2020-11-29 18:39:52,943 INFO L274 CegarLoopResult]: For program point L42(lines 42 43) no Hoare annotation was computed. [2020-11-29 18:39:52,943 INFO L270 CegarLoopResult]: At program point L40(lines 40 50) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-29 18:39:52,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:39:52 BoogieIcfgContainer [2020-11-29 18:39:52,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:39:52,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:39:52,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:39:52,954 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:39:52,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:39:38" (3/4) ... [2020-11-29 18:39:52,958 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:39:52,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure twoWay [2020-11-29 18:39:52,968 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 18:39:52,969 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-29 18:39:53,013 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_99e08532-8925-4a09-9f33-a9a94e33a098/bin/uautomizer/witness.graphml [2020-11-29 18:39:53,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:39:53,015 INFO L168 Benchmark]: Toolchain (without parser) took 15214.78 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 50.0 MB in the beginning and 37.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:39:53,015 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 81.8 MB. Free memory was 55.2 MB in the beginning and 55.2 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:39:53,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.49 ms. Allocated memory is still 81.8 MB. Free memory was 49.6 MB in the beginning and 61.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:39:53,016 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.68 ms. Allocated memory is still 81.8 MB. Free memory was 61.4 MB in the beginning and 60.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:39:53,017 INFO L168 Benchmark]: Boogie Preprocessor took 37.78 ms. Allocated memory is still 81.8 MB. Free memory was 60.1 MB in the beginning and 59.1 MB in the end (delta: 994.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:39:53,017 INFO L168 Benchmark]: RCFGBuilder took 427.60 ms. Allocated memory is still 81.8 MB. Free memory was 59.1 MB in the beginning and 47.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:39:53,018 INFO L168 Benchmark]: TraceAbstraction took 14367.14 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 47.6 MB in the beginning and 39.8 MB in the end (delta: 7.7 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:39:53,018 INFO L168 Benchmark]: Witness Printer took 59.11 ms. Allocated memory is still 119.5 MB. Free memory was 39.8 MB in the beginning and 37.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:39:53,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 81.8 MB. Free memory was 55.2 MB in the beginning and 55.2 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.49 ms. Allocated memory is still 81.8 MB. Free memory was 49.6 MB in the beginning and 61.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.68 ms. Allocated memory is still 81.8 MB. Free memory was 61.4 MB in the beginning and 60.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.78 ms. Allocated memory is still 81.8 MB. Free memory was 60.1 MB in the beginning and 59.1 MB in the end (delta: 994.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 427.60 ms. Allocated memory is still 81.8 MB. Free memory was 59.1 MB in the beginning and 47.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14367.14 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 47.6 MB in the beginning and 39.8 MB in the end (delta: 7.7 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. * Witness Printer took 59.11 ms. Allocated memory is still 119.5 MB. Free memory was 39.8 MB in the beginning and 37.7 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: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.1s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 320 SDslu, 389 SDs, 0 SdLazy, 688 SolverSat, 103 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=1, 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, 9 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 39 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 187 ConstructedInterpolants, 19 QuantifiedInterpolants, 32648 SizeOfPredicates, 25 NumberOfNonLiveVariables, 527 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 79/129 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...