./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2.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_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/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 5155088d89d02424835a418b2f1dfc7cb44efefa ............................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:14:38,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:14:38,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:14:38,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:14:38,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:14:38,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:14:38,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:14:38,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:14:38,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:14:38,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:14:38,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:14:38,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:14:38,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:14:38,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:14:38,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:14:38,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:14:38,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:14:38,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:14:38,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:14:38,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:14:38,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:14:38,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:14:38,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:14:38,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:14:38,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:14:38,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:14:38,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:14:38,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:14:38,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:14:38,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:14:38,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:14:38,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:14:38,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:14:38,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:14:38,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:14:38,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:14:38,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:14:38,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:14:38,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:14:38,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:14:38,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:14:38,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:14:38,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:14:38,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:14:38,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:14:38,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:14:38,865 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:14:38,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:14:38,866 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:14:38,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:14:38,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:14:38,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:14:38,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:14:38,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:14:38,868 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:14:38,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:14:38,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:14:38,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:14:38,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:14:38,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:14:38,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:14:38,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:14:38,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:14:38,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:14:38,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:14:38,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:14:38,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:14:38,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:14:38,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:14:38,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:14:38,873 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_ddae6fac-3b87-42ed-8317-48fc38cae3e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5155088d89d02424835a418b2f1dfc7cb44efefa [2020-11-28 03:14:39,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:14:39,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:14:39,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:14:39,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:14:39,279 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:14:39,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2.c [2020-11-28 03:14:39,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/data/3053bc75e/3407d94552f84b66ad523e81ad3d6eb1/FLAG8cee39ff8 [2020-11-28 03:14:39,957 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:14:39,958 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2.c [2020-11-28 03:14:39,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/data/3053bc75e/3407d94552f84b66ad523e81ad3d6eb1/FLAG8cee39ff8 [2020-11-28 03:14:40,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/data/3053bc75e/3407d94552f84b66ad523e81ad3d6eb1 [2020-11-28 03:14:40,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:14:40,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:14:40,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:40,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:14:40,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:14:40,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ff7aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40, skipping insertion in model container [2020-11-28 03:14:40,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:14:40,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:14:40,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:40,533 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:14:40,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:40,582 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:14:40,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40 WrapperNode [2020-11-28 03:14:40,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:40,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:40,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:14:40,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:14:40,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:40,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:14:40,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:14:40,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:14:40,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:14:40,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:14:40,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:14:40,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:14:40,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/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 03:14:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:14:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:14:41,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:14:41,069 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:14:41,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:41 BoogieIcfgContainer [2020-11-28 03:14:41,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:14:41,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:14:41,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:14:41,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:14:41,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:14:40" (1/3) ... [2020-11-28 03:14:41,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f244c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:41, skipping insertion in model container [2020-11-28 03:14:41,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40" (2/3) ... [2020-11-28 03:14:41,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f244c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:41, skipping insertion in model container [2020-11-28 03:14:41,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:41" (3/3) ... [2020-11-28 03:14:41,090 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig2.c [2020-11-28 03:14:41,130 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:14:41,135 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 03:14:41,159 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 03:14:41,229 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:14:41,230 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:14:41,230 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:14:41,230 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:14:41,231 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:14:41,231 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:14:41,231 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:14:41,231 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:14:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-28 03:14:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 03:14:41,268 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:41,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 03:14:41,270 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:14:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:41,278 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-11-28 03:14:41,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:41,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551550516] [2020-11-28 03:14:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:41,486 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 03:14:41,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551550516] [2020-11-28 03:14:41,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:41,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:14:41,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920235736] [2020-11-28 03:14:41,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:14:41,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:41,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:14:41,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:41,512 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2020-11-28 03:14:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:41,674 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-11-28 03:14:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:14:41,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 03:14:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:41,685 INFO L225 Difference]: With dead ends: 46 [2020-11-28 03:14:41,685 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:14:41,688 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 03:14:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:14:41,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2020-11-28 03:14:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:14:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-28 03:14:41,750 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 4 [2020-11-28 03:14:41,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:41,751 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-28 03:14:41,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:14:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-28 03:14:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 03:14:41,752 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:41,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 03:14:41,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:14:41,753 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:14:41,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:41,755 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-11-28 03:14:41,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:41,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981522996] [2020-11-28 03:14:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:41,830 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 03:14:41,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981522996] [2020-11-28 03:14:41,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:41,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:14:41,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803717264] [2020-11-28 03:14:41,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:14:41,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:41,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:14:41,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:41,835 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-11-28 03:14:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:41,943 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-11-28 03:14:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:14:41,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 03:14:41,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:41,945 INFO L225 Difference]: With dead ends: 31 [2020-11-28 03:14:41,946 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 03:14:41,947 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 03:14:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 03:14:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2020-11-28 03:14:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:14:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-11-28 03:14:41,958 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2020-11-28 03:14:41,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:41,959 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-28 03:14:41,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:14:41,959 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-11-28 03:14:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 03:14:41,959 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:41,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 03:14:41,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:14:41,960 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:14:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:41,962 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-11-28 03:14:41,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:41,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223325456] [2020-11-28 03:14:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:42,026 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 03:14:42,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223325456] [2020-11-28 03:14:42,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:42,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:14:42,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11114363] [2020-11-28 03:14:42,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:42,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:42,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:42,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:42,030 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2020-11-28 03:14:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:42,051 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-11-28 03:14:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:42,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 03:14:42,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:42,054 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:14:42,054 INFO L226 Difference]: Without dead ends: 21 [2020-11-28 03:14:42,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-28 03:14:42,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-28 03:14:42,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 03:14:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-11-28 03:14:42,067 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 5 [2020-11-28 03:14:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:42,068 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-11-28 03:14:42,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-11-28 03:14:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 03:14:42,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:42,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 03:14:42,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:14:42,072 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:14:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-11-28 03:14:42,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:42,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090959328] [2020-11-28 03:14:42,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:42,133 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 03:14:42,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090959328] [2020-11-28 03:14:42,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:42,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:14:42,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065466170] [2020-11-28 03:14:42,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:42,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:42,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:42,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:42,136 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2020-11-28 03:14:42,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:42,158 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-11-28 03:14:42,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:42,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 03:14:42,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:42,159 INFO L225 Difference]: With dead ends: 21 [2020-11-28 03:14:42,159 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 03:14:42,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:42,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 03:14:42,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-28 03:14:42,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:14:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-11-28 03:14:42,166 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 5 [2020-11-28 03:14:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:42,166 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-28 03:14:42,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-11-28 03:14:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:14:42,167 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:42,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:14:42,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:14:42,168 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:14:42,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:42,169 INFO L82 PathProgramCache]: Analyzing trace with hash 925954989, now seen corresponding path program 1 times [2020-11-28 03:14:42,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:42,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791566262] [2020-11-28 03:14:42,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:42,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:42,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:42,216 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:42,216 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:14:42,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:14:42,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:14:42 BoogieIcfgContainer [2020-11-28 03:14:42,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:14:42,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:14:42,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:14:42,237 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:14:42,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:41" (3/4) ... [2020-11-28 03:14:42,240 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:14:42,280 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ddae6fac-3b87-42ed-8317-48fc38cae3e5/bin/uautomizer/witness.graphml [2020-11-28 03:14:42,281 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:14:42,283 INFO L168 Benchmark]: Toolchain (without parser) took 1962.41 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 65.6 MB in the beginning and 70.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:42,284 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 94.4 MB. Free memory was 53.4 MB in the beginning and 53.3 MB in the end (delta: 43.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:42,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.96 ms. Allocated memory is still 94.4 MB. Free memory was 65.6 MB in the beginning and 73.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:42,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.88 ms. Allocated memory is still 94.4 MB. Free memory was 73.9 MB in the beginning and 72.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:42,286 INFO L168 Benchmark]: Boogie Preprocessor took 32.60 ms. Allocated memory is still 94.4 MB. Free memory was 72.5 MB in the beginning and 71.7 MB in the end (delta: 774.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:42,287 INFO L168 Benchmark]: RCFGBuilder took 406.42 ms. Allocated memory is still 94.4 MB. Free memory was 71.7 MB in the beginning and 62.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:42,288 INFO L168 Benchmark]: TraceAbstraction took 1154.08 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.6 MB in the beginning and 71.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:42,288 INFO L168 Benchmark]: Witness Printer took 43.72 ms. Allocated memory is still 113.2 MB. Free memory was 71.7 MB in the beginning and 70.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:42,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 94.4 MB. Free memory was 53.4 MB in the beginning and 53.3 MB in the end (delta: 43.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.96 ms. Allocated memory is still 94.4 MB. Free memory was 65.6 MB in the beginning and 73.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.88 ms. Allocated memory is still 94.4 MB. Free memory was 73.9 MB in the beginning and 72.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.60 ms. Allocated memory is still 94.4 MB. Free memory was 72.5 MB in the beginning and 71.7 MB in the end (delta: 774.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 406.42 ms. Allocated memory is still 94.4 MB. Free memory was 71.7 MB in the beginning and 62.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1154.08 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.6 MB in the beginning and 71.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 43.72 ms. Allocated memory is still 113.2 MB. Free memory was 71.7 MB in the beginning and 70.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x = __VERIFIER_nondet_int(); [L13] int y = __VERIFIER_nondet_int(); [L14] COND TRUE x > 0 && y > 0 [L15] int old_x = x; [L16] int old_y = y; [L17] COND FALSE !(__VERIFIER_nondet_int()) [L21] EXPR old_y - 2 [L21] x = old_y - 2 [L22] old_x + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 71 SDslu, 42 SDs, 0 SdLazy, 48 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...