./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c -s /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d28857c86a3c83fc75b1b8cf8125f1c52a370911 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:30:50,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:30:50,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:30:50,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:30:50,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:30:50,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:30:50,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:30:50,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:30:50,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:30:50,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:30:50,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:30:50,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:30:50,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:30:50,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:30:50,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:30:50,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:30:50,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:30:50,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:30:50,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:30:50,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:30:50,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:30:50,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:30:50,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:30:50,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:30:50,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:30:50,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:30:50,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:30:50,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:30:50,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:30:50,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:30:50,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:30:50,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:30:50,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:30:50,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:30:50,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:30:50,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:30:50,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:30:50,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:30:50,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:30:50,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:30:50,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:30:50,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-03 12:30:50,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:30:50,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:30:50,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:30:50,274 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:30:50,274 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:30:50,274 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:30:50,275 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:30:50,275 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:30:50,275 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:30:50,275 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:30:50,275 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:30:50,276 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:30:50,276 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:30:50,276 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:30:50,277 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:30:50,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:30:50,278 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:30:50,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:30:50,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:30:50,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:30:50,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:30:50,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:30:50,279 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:30:50,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:30:50,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:30:50,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:30:50,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:30:50,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:30:50,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:30:50,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:30:50,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:30:50,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:30:50,281 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:30:50,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:30:50,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:30:50,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:30:50,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:30:50,283 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2020-12-03 12:30:50,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:30:50,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:30:50,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:30:50,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:30:50,597 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:30:50,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2020-12-03 12:30:50,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/data/d8ff255de/3732d9d3dba24733a2e1512bd183e8ce/FLAGb2f338f45 [2020-12-03 12:30:51,124 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:30:51,124 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2020-12-03 12:30:51,130 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/data/d8ff255de/3732d9d3dba24733a2e1512bd183e8ce/FLAGb2f338f45 [2020-12-03 12:30:51,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/data/d8ff255de/3732d9d3dba24733a2e1512bd183e8ce [2020-12-03 12:30:51,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:30:51,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:30:51,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:30:51,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:30:51,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:30:51,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1006e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51, skipping insertion in model container [2020-12-03 12:30:51,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:30:51,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:30:51,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:30:51,747 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:30:51,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:30:51,784 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:30:51,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51 WrapperNode [2020-12-03 12:30:51,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:30:51,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:30:51,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:30:51,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:30:51,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:30:51,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:30:51,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:30:51,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:30:51,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (1/1) ... [2020-12-03 12:30:51,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:30:51,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:30:51,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:30:51,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:30:51,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/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 [2020-12-03 12:30:51,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:30:51,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:30:52,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:30:52,134 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-03 12:30:52,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:52 BoogieIcfgContainer [2020-12-03 12:30:52,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:30:52,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:30:52,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:30:52,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:30:52,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:30:51" (1/3) ... [2020-12-03 12:30:52,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304e7ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:30:52, skipping insertion in model container [2020-12-03 12:30:52,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:51" (2/3) ... [2020-12-03 12:30:52,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304e7ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:30:52, skipping insertion in model container [2020-12-03 12:30:52,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:52" (3/3) ... [2020-12-03 12:30:52,145 INFO L111 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn.c [2020-12-03 12:30:52,159 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:30:52,163 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-03 12:30:52,179 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-03 12:30:52,203 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:30:52,203 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:30:52,204 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:30:52,204 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:30:52,204 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:30:52,204 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:30:52,204 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:30:52,204 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:30:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-03 12:30:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-03 12:30:52,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:52,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-03 12:30:52,223 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:52,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:52,229 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-12-03 12:30:52,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:52,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282955631] [2020-12-03 12:30:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:52,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282955631] [2020-12-03 12:30:52,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:52,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:30:52,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765467393] [2020-12-03 12:30:52,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:52,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:52,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:52,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:52,484 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-12-03 12:30:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:52,551 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-12-03 12:30:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:30:52,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-12-03 12:30:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:52,561 INFO L225 Difference]: With dead ends: 11 [2020-12-03 12:30:52,562 INFO L226 Difference]: Without dead ends: 8 [2020-12-03 12:30:52,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:52,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-03 12:30:52,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-03 12:30:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-03 12:30:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-03 12:30:52,636 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2020-12-03 12:30:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:52,636 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-03 12:30:52,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-03 12:30:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 12:30:52,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:52,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-03 12:30:52,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:30:52,638 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:52,639 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-12-03 12:30:52,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:52,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209220102] [2020-12-03 12:30:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:52,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209220102] [2020-12-03 12:30:52,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:52,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:30:52,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88180529] [2020-12-03 12:30:52,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:52,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:52,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:52,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:52,722 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2020-12-03 12:30:52,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:52,791 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-12-03 12:30:52,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:52,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-03 12:30:52,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:52,793 INFO L225 Difference]: With dead ends: 15 [2020-12-03 12:30:52,793 INFO L226 Difference]: Without dead ends: 14 [2020-12-03 12:30:52,794 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 [2020-12-03 12:30:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-03 12:30:52,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-12-03 12:30:52,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-03 12:30:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-03 12:30:52,798 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2020-12-03 12:30:52,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:52,799 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-03 12:30:52,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:52,799 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-03 12:30:52,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 12:30:52,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:52,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 12:30:52,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:30:52,800 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:52,801 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-12-03 12:30:52,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:52,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851046528] [2020-12-03 12:30:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:52,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851046528] [2020-12-03 12:30:52,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:52,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:30:52,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873881811] [2020-12-03 12:30:52,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:52,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:52,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:52,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:52,838 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-12-03 12:30:52,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:52,858 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-12-03 12:30:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:30:52,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-03 12:30:52,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:52,860 INFO L225 Difference]: With dead ends: 12 [2020-12-03 12:30:52,860 INFO L226 Difference]: Without dead ends: 11 [2020-12-03 12:30:52,860 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 [2020-12-03 12:30:52,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-03 12:30:52,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-03 12:30:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-03 12:30:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-03 12:30:52,864 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2020-12-03 12:30:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:52,864 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-03 12:30:52,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-03 12:30:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 12:30:52,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:52,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-12-03 12:30:52,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:30:52,866 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:52,867 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2020-12-03 12:30:52,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:52,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222910530] [2020-12-03 12:30:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:52,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222910530] [2020-12-03 12:30:52,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847761] [2020-12-03 12:30:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/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 [2020-12-03 12:30:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:52,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-03 12:30:53,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:53,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:53,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [326000585] [2020-12-03 12:30:53,152 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-03 12:30:53,152 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:30:53,157 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:30:53,163 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:30:53,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:30:55,383 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:30:55,670 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 22 [2020-12-03 12:30:56,312 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 31 [2020-12-03 12:30:56,341 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:56,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:30:56,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2020-12-03 12:30:56,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751868108] [2020-12-03 12:30:56,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-03 12:30:56,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:56,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-03 12:30:56,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-12-03 12:30:56,344 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2020-12-03 12:30:56,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:56,435 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-12-03 12:30:56,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-03 12:30:56,435 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-12-03 12:30:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:56,436 INFO L225 Difference]: With dead ends: 28 [2020-12-03 12:30:56,437 INFO L226 Difference]: Without dead ends: 27 [2020-12-03 12:30:56,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-12-03 12:30:56,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-03 12:30:56,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-12-03 12:30:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-03 12:30:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-12-03 12:30:56,448 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2020-12-03 12:30:56,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:56,448 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-12-03 12:30:56,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-03 12:30:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-12-03 12:30:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-03 12:30:56,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:56,450 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-12-03 12:30:56,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2020-12-03 12:30:56,667 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2020-12-03 12:30:56,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:56,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709251396] [2020-12-03 12:30:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:56,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709251396] [2020-12-03 12:30:56,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893278459] [2020-12-03 12:30:56,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/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 [2020-12-03 12:30:56,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-03 12:30:56,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 12:30:56,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-03 12:30:56,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:56,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:57,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1476427360] [2020-12-03 12:30:57,212 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-03 12:30:57,213 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:30:57,214 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:30:57,214 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:30:57,214 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:30:58,330 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:30:58,617 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 22 [2020-12-03 12:30:58,983 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-12-03 12:30:59,324 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 31 [2020-12-03 12:30:59,364 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:59,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:30:59,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2020-12-03 12:30:59,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666872688] [2020-12-03 12:30:59,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-03 12:30:59,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:59,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-03 12:30:59,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-12-03 12:30:59,367 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 22 states. [2020-12-03 12:30:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:59,659 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-12-03 12:30:59,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-03 12:30:59,660 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-12-03 12:30:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:59,661 INFO L225 Difference]: With dead ends: 58 [2020-12-03 12:30:59,661 INFO L226 Difference]: Without dead ends: 57 [2020-12-03 12:30:59,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=325, Invalid=1081, Unknown=0, NotChecked=0, Total=1406 [2020-12-03 12:30:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-03 12:30:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-12-03 12:30:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-03 12:30:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-12-03 12:30:59,670 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 25 [2020-12-03 12:30:59,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:59,670 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-12-03 12:30:59,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-03 12:30:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-12-03 12:30:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-03 12:30:59,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:59,680 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2020-12-03 12:30:59,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-03 12:30:59,903 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:59,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 3 times [2020-12-03 12:30:59,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:59,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933835932] [2020-12-03 12:30:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:00,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933835932] [2020-12-03 12:31:00,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434808819] [2020-12-03 12:31:00,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/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 [2020-12-03 12:31:00,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-03 12:31:00,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 12:31:00,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-03 12:31:00,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:00,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:31:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:01,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [982463074] [2020-12-03 12:31:01,273 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-03 12:31:01,273 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:31:01,273 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:31:01,274 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:31:01,274 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:31:02,324 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:31:02,630 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 22 [2020-12-03 12:31:03,273 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 31 [2020-12-03 12:31:03,304 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:31:03,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:31:03,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2020-12-03 12:31:03,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173026089] [2020-12-03 12:31:03,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-03 12:31:03,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:31:03,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-03 12:31:03,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2020-12-03 12:31:03,308 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 46 states. [2020-12-03 12:31:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:04,078 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-12-03 12:31:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-03 12:31:04,079 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 55 [2020-12-03 12:31:04,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:04,082 INFO L225 Difference]: With dead ends: 118 [2020-12-03 12:31:04,083 INFO L226 Difference]: Without dead ends: 117 [2020-12-03 12:31:04,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1351, Invalid=4051, Unknown=0, NotChecked=0, Total=5402 [2020-12-03 12:31:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-03 12:31:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-12-03 12:31:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-03 12:31:04,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2020-12-03 12:31:04,097 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 55 [2020-12-03 12:31:04,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:04,097 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2020-12-03 12:31:04,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-03 12:31:04,097 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2020-12-03 12:31:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-03 12:31:04,102 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:04,102 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2020-12-03 12:31:04,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-12-03 12:31:04,327 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:31:04,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:04,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 4 times [2020-12-03 12:31:04,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:31:04,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101426147] [2020-12-03 12:31:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:31:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:05,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101426147] [2020-12-03 12:31:05,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505759445] [2020-12-03 12:31:05,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/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 [2020-12-03 12:31:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:05,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-03 12:31:05,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:05,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:31:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:08,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [495491915] [2020-12-03 12:31:08,209 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-03 12:31:08,209 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:31:08,210 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:31:08,210 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:31:08,210 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:31:09,522 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:31:10,256 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:31:10,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:31:10,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 92 [2020-12-03 12:31:10,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440010109] [2020-12-03 12:31:10,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-12-03 12:31:10,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:31:10,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-12-03 12:31:10,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2274, Invalid=7626, Unknown=0, NotChecked=0, Total=9900 [2020-12-03 12:31:10,264 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 94 states. [2020-12-03 12:31:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:12,414 INFO L93 Difference]: Finished difference Result 238 states and 261 transitions. [2020-12-03 12:31:12,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-12-03 12:31:12,414 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 115 [2020-12-03 12:31:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:12,417 INFO L225 Difference]: With dead ends: 238 [2020-12-03 12:31:12,417 INFO L226 Difference]: Without dead ends: 237 [2020-12-03 12:31:12,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4908 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=5563, Invalid=15607, Unknown=0, NotChecked=0, Total=21170 [2020-12-03 12:31:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-03 12:31:12,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2020-12-03 12:31:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-12-03 12:31:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2020-12-03 12:31:12,442 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 115 [2020-12-03 12:31:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:12,443 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2020-12-03 12:31:12,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-12-03 12:31:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2020-12-03 12:31:12,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-03 12:31:12,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:12,448 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1] [2020-12-03 12:31:12,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:31:12,663 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:31:12,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:12,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1923709923, now seen corresponding path program 5 times [2020-12-03 12:31:12,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:31:12,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956707295] [2020-12-03 12:31:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:31:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 4711 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-12-03 12:31:16,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956707295] [2020-12-03 12:31:16,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:31:16,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2020-12-03 12:31:16,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856478596] [2020-12-03 12:31:16,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-12-03 12:31:16,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:31:16,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-12-03 12:31:16,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-12-03 12:31:16,340 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 63 states. [2020-12-03 12:31:16,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:16,580 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2020-12-03 12:31:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-12-03 12:31:16,581 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 235 [2020-12-03 12:31:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:16,581 INFO L225 Difference]: With dead ends: 236 [2020-12-03 12:31:16,582 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:31:16,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-12-03 12:31:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:31:16,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:31:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:31:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:31:16,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 235 [2020-12-03 12:31:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:16,585 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:31:16,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-12-03 12:31:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:31:16,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:31:16,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-12-03 12:31:16,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:31:17,059 WARN L197 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 155 [2020-12-03 12:31:17,061 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2020-12-03 12:31:17,061 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:31:17,061 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-12-03 12:31:17,061 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-03 12:31:17,062 INFO L262 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-12-03 12:31:17,062 INFO L258 CegarLoopResult]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_mlog_~res~0))) (or (and (<= ULTIMATE.start_mlog_~x 1048575) .cse0 (<= ULTIMATE.start_mlog_~res~0 11)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 9) (<= ULTIMATE.start_mlog_~x 4194303)) (and .cse0 (<= ULTIMATE.start_mlog_~x 7) (<= ULTIMATE.start_mlog_~res~0 2147483629)) (and (<= ULTIMATE.start_mlog_~x 536870911) .cse0 (<= ULTIMATE.start_mlog_~res~0 2)) (and .cse0 (<= ULTIMATE.start_mlog_~x 8388607) (<= ULTIMATE.start_mlog_~res~0 8)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 2147483630) (<= ULTIMATE.start_mlog_~x 3)) (and (<= ULTIMATE.start_mlog_~res~0 14) (<= ULTIMATE.start_mlog_~x 131071) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~x 1) (<= ULTIMATE.start_mlog_~res~0 2147483631)) (and .cse0 (<= ULTIMATE.start_mlog_~x 31) (<= ULTIMATE.start_mlog_~res~0 2147483627)) (and .cse0 (<= ULTIMATE.start_mlog_~x 67108863) (<= ULTIMATE.start_mlog_~res~0 5)) (and (<= ULTIMATE.start_mlog_~res~0 1) .cse0 (<= ULTIMATE.start_mlog_~x 1073741823)) (and .cse0 (<= ULTIMATE.start_mlog_~x 268435455) (<= ULTIMATE.start_mlog_~res~0 3)) (and (<= ULTIMATE.start_mlog_~x 2097151) (<= ULTIMATE.start_mlog_~res~0 10) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 17) (<= ULTIMATE.start_mlog_~x 16383)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 2147483628) (<= ULTIMATE.start_mlog_~x 15)) (and (<= ULTIMATE.start_mlog_~res~0 22) .cse0 (<= ULTIMATE.start_mlog_~x 511)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 6) (<= ULTIMATE.start_mlog_~x 33554431)) (and (<= ULTIMATE.start_mlog_~x 262143) .cse0 (<= ULTIMATE.start_mlog_~res~0 13)) (and (<= ULTIMATE.start_mlog_~res~0 21) .cse0 (<= ULTIMATE.start_mlog_~x 1023)) (and (<= ULTIMATE.start_mlog_~res~0 19) .cse0 (<= ULTIMATE.start_mlog_~x 4095)) (and (<= ULTIMATE.start_mlog_~res~0 2147483625) .cse0 (<= ULTIMATE.start_mlog_~x 127)) (and (<= ULTIMATE.start_mlog_~res~0 2147483624) .cse0 (<= ULTIMATE.start_mlog_~x 255)) (and .cse0 (<= ULTIMATE.start_mlog_~x 2147483647) (<= ULTIMATE.start_mlog_~res~0 0)) (and (<= ULTIMATE.start_mlog_~res~0 2147483626) (<= ULTIMATE.start_mlog_~x 63) .cse0) (and (<= ULTIMATE.start_mlog_~res~0 7) .cse0 (<= ULTIMATE.start_mlog_~x 16777215)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 12) (<= ULTIMATE.start_mlog_~x 524287)) (and (<= ULTIMATE.start_mlog_~res~0 15) .cse0 (<= ULTIMATE.start_mlog_~x 65535)) (and (<= ULTIMATE.start_mlog_~res~0 16) .cse0 (<= ULTIMATE.start_mlog_~x 32767)) (and (<= ULTIMATE.start_mlog_~x 8191) .cse0 (<= ULTIMATE.start_mlog_~res~0 18)) (and (<= ULTIMATE.start_mlog_~res~0 20) .cse0 (<= ULTIMATE.start_mlog_~x 2047)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 4) (<= ULTIMATE.start_mlog_~x 134217727)))) [2020-12-03 12:31:17,062 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2020-12-03 12:31:17,062 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-12-03 12:31:17,062 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:31:17,062 INFO L262 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-12-03 12:31:17,063 INFO L262 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-12-03 12:31:17,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:31:17 BoogieIcfgContainer [2020-12-03 12:31:17,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:31:17,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:31:17,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:31:17,087 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:31:17,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:52" (3/4) ... [2020-12-03 12:31:17,090 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:31:17,098 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-03 12:31:17,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-03 12:31:17,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:31:17,134 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_21e63bae-4ac2-47e3-99b2-cd0b817bce63/bin/utaipan/witness.graphml [2020-12-03 12:31:17,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:31:17,136 INFO L168 Benchmark]: Toolchain (without parser) took 25598.89 ms. Allocated memory was 94.4 MB in the beginning and 360.7 MB in the end (delta: 266.3 MB). Free memory was 66.3 MB in the beginning and 187.7 MB in the end (delta: -121.5 MB). Peak memory consumption was 145.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:17,136 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 94.4 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:17,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.67 ms. Allocated memory is still 94.4 MB. Free memory was 66.0 MB in the beginning and 71.6 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:17,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.72 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:17,137 INFO L168 Benchmark]: Boogie Preprocessor took 28.58 ms. Allocated memory is still 94.4 MB. Free memory was 70.4 MB in the beginning and 69.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:17,138 INFO L168 Benchmark]: RCFGBuilder took 276.60 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 58.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:17,139 INFO L168 Benchmark]: TraceAbstraction took 24948.06 ms. Allocated memory was 94.4 MB in the beginning and 360.7 MB in the end (delta: 266.3 MB). Free memory was 57.8 MB in the beginning and 189.8 MB in the end (delta: -132.1 MB). Peak memory consumption was 136.3 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:17,139 INFO L168 Benchmark]: Witness Printer took 48.49 ms. Allocated memory is still 360.7 MB. Free memory was 189.8 MB in the beginning and 187.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:17,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 94.4 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.67 ms. Allocated memory is still 94.4 MB. Free memory was 66.0 MB in the beginning and 71.6 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.72 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.58 ms. Allocated memory is still 94.4 MB. Free memory was 70.4 MB in the beginning and 69.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 276.60 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 58.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24948.06 ms. Allocated memory was 94.4 MB in the beginning and 360.7 MB in the end (delta: 266.3 MB). Free memory was 57.8 MB in the beginning and 189.8 MB in the end (delta: -132.1 MB). Peak memory consumption was 136.3 MB. Max. memory is 16.1 GB. * Witness Printer took 48.49 ms. Allocated memory is still 360.7 MB. Free memory was 189.8 MB in the beginning and 187.7 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: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((x <= 1048575 && 0 <= res) && res <= 11) || ((0 <= res && res <= 9) && x <= 4194303)) || ((0 <= res && x <= 7) && res <= 2147483629)) || ((x <= 536870911 && 0 <= res) && res <= 2)) || ((0 <= res && x <= 8388607) && res <= 8)) || ((0 <= res && res <= 2147483630) && x <= 3)) || ((res <= 14 && x <= 131071) && 0 <= res)) || ((0 <= res && x <= 1) && res <= 2147483631)) || ((0 <= res && x <= 31) && res <= 2147483627)) || ((0 <= res && x <= 67108863) && res <= 5)) || ((res <= 1 && 0 <= res) && x <= 1073741823)) || ((0 <= res && x <= 268435455) && res <= 3)) || ((x <= 2097151 && res <= 10) && 0 <= res)) || ((0 <= res && res <= 17) && x <= 16383)) || ((0 <= res && res <= 2147483628) && x <= 15)) || ((res <= 22 && 0 <= res) && x <= 511)) || ((0 <= res && res <= 6) && x <= 33554431)) || ((x <= 262143 && 0 <= res) && res <= 13)) || ((res <= 21 && 0 <= res) && x <= 1023)) || ((res <= 19 && 0 <= res) && x <= 4095)) || ((res <= 2147483625 && 0 <= res) && x <= 127)) || ((res <= 2147483624 && 0 <= res) && x <= 255)) || ((0 <= res && x <= 2147483647) && res <= 0)) || ((res <= 2147483626 && x <= 63) && 0 <= res)) || ((res <= 7 && 0 <= res) && x <= 16777215)) || ((0 <= res && res <= 12) && x <= 524287)) || ((res <= 15 && 0 <= res) && x <= 65535)) || ((res <= 16 && 0 <= res) && x <= 32767)) || ((x <= 8191 && 0 <= res) && res <= 18)) || ((res <= 20 && 0 <= res) && x <= 2047)) || ((0 <= res && res <= 4) && x <= 134217727) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.3s, OverallIterations: 8, TraceHistogramMax: 47, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 679 SDslu, 331 SDs, 0 SdLazy, 679 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 871 GetRequests, 502 SyntacticMatches, 30 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7041 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=7, 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, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 32 NumberOfFragments, 311 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 659 NumberOfCodeBlocks, 659 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 848 ConstructedInterpolants, 0 QuantifiedInterpolants, 330848 SizeOfPredicates, 41 NumberOfNonLiveVariables, 479 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 5359/10033 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...