./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.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_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/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 9072a9376e1e28de1ef4dc11b7134f6f175023b7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:33:05,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:33:05,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:33:05,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:33:05,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:33:05,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:33:05,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:33:05,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:33:05,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:33:05,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:33:05,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:33:05,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:33:05,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:33:05,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:33:05,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:33:05,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:33:05,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:33:05,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:33:05,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:33:05,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:33:05,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:33:05,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:33:05,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:33:05,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:33:05,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:33:05,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:33:05,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:33:05,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:33:05,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:33:05,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:33:05,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:33:05,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:33:05,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:33:05,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:33:05,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:33:05,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:33:05,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:33:05,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:33:05,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:33:05,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:33:05,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:33:05,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-03 12:33:05,319 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:33:05,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:33:05,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:33:05,320 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:33:05,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:33:05,320 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:33:05,320 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:33:05,320 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:33:05,320 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:33:05,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:33:05,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:33:05,321 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:33:05,321 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:33:05,321 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:33:05,321 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:33:05,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:33:05,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:33:05,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:33:05,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:33:05,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:33:05,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:33:05,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:33:05,323 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:33:05,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:33:05,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:33:05,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:33:05,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:33:05,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:33:05,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:33:05,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:33:05,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:33:05,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:33:05,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:33:05,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:33:05,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:33:05,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:33:05,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:33:05,326 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_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9072a9376e1e28de1ef4dc11b7134f6f175023b7 [2020-12-03 12:33:05,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:33:05,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:33:05,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:33:05,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:33:05,644 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:33:05,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2020-12-03 12:33:05,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/data/57fa152f1/6d7901aa7b3c416cbef49bbf2ab9ee3b/FLAG7b4b0fcec [2020-12-03 12:33:06,203 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:33:06,204 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2020-12-03 12:33:06,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/data/57fa152f1/6d7901aa7b3c416cbef49bbf2ab9ee3b/FLAG7b4b0fcec [2020-12-03 12:33:06,590 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/data/57fa152f1/6d7901aa7b3c416cbef49bbf2ab9ee3b [2020-12-03 12:33:06,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:33:06,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:33:06,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:33:06,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:33:06,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:33:06,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145857ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06, skipping insertion in model container [2020-12-03 12:33:06,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:33:06,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:33:06,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:33:06,775 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:33:06,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:33:06,800 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:33:06,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06 WrapperNode [2020-12-03 12:33:06,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:33:06,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:33:06,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:33:06,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:33:06,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:33:06,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:33:06,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:33:06,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:33:06,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (1/1) ... [2020-12-03 12:33:06,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:33:06,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:33:06,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:33:06,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:33:06,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/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 12:33:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-12-03 12:33:06,961 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-12-03 12:33:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-12-03 12:33:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-12-03 12:33:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:33:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:33:07,226 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:33:07,226 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-03 12:33:07,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:07 BoogieIcfgContainer [2020-12-03 12:33:07,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:33:07,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:33:07,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:33:07,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:33:07,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:33:06" (1/3) ... [2020-12-03 12:33:07,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb39f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:33:07, skipping insertion in model container [2020-12-03 12:33:07,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:06" (2/3) ... [2020-12-03 12:33:07,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb39f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:33:07, skipping insertion in model container [2020-12-03 12:33:07,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:07" (3/3) ... [2020-12-03 12:33:07,268 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1b.c [2020-12-03 12:33:07,285 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:33:07,288 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-03 12:33:07,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-03 12:33:07,340 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:33:07,340 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:33:07,340 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:33:07,340 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:33:07,340 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:33:07,354 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:33:07,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:33:07,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:33:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-12-03 12:33:07,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 12:33:07,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:07,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-03 12:33:07,395 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:33:07,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:07,406 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2020-12-03 12:33:07,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:07,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374687858] [2020-12-03 12:33:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:07,564 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 12:33:07,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374687858] [2020-12-03 12:33:07,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:07,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:33:07,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528515059] [2020-12-03 12:33:07,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:33:07,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:07,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:33:07,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:33:07,586 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2020-12-03 12:33:07,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:07,704 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-03 12:33:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:33:07,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-12-03 12:33:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:07,721 INFO L225 Difference]: With dead ends: 62 [2020-12-03 12:33:07,722 INFO L226 Difference]: Without dead ends: 56 [2020-12-03 12:33:07,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:33:07,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-03 12:33:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-03 12:33:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-03 12:33:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-12-03 12:33:07,772 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2020-12-03 12:33:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:07,773 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-12-03 12:33:07,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:33:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-12-03 12:33:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 12:33:07,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:07,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 12:33:07,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:33:07,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:33:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:07,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2020-12-03 12:33:07,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:07,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365744042] [2020-12-03 12:33:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:07,797 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 12:33:07,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365744042] [2020-12-03 12:33:07,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:07,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:33:07,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217590786] [2020-12-03 12:33:07,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:33:07,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:33:07,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:33:07,802 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2020-12-03 12:33:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:07,828 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-12-03 12:33:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:33:07,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-03 12:33:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:07,831 INFO L225 Difference]: With dead ends: 52 [2020-12-03 12:33:07,831 INFO L226 Difference]: Without dead ends: 50 [2020-12-03 12:33:07,832 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 [2020-12-03 12:33:07,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-03 12:33:07,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-12-03 12:33:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-03 12:33:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-12-03 12:33:07,845 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2020-12-03 12:33:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:07,846 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-12-03 12:33:07,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:33:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-12-03 12:33:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:33:07,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:07,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:07,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:33:07,848 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:33:07,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:07,849 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2020-12-03 12:33:07,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:07,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2415392] [2020-12-03 12:33:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:07,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2415392] [2020-12-03 12:33:07,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:07,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-03 12:33:07,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279672447] [2020-12-03 12:33:07,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-03 12:33:07,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:07,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-03 12:33:07,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:33:07,978 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2020-12-03 12:33:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:08,271 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-12-03 12:33:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-03 12:33:08,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-03 12:33:08,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:08,280 INFO L225 Difference]: With dead ends: 66 [2020-12-03 12:33:08,280 INFO L226 Difference]: Without dead ends: 63 [2020-12-03 12:33:08,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-03 12:33:08,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-03 12:33:08,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-12-03 12:33:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-03 12:33:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-12-03 12:33:08,306 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2020-12-03 12:33:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:08,307 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-12-03 12:33:08,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-03 12:33:08,308 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-12-03 12:33:08,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-03 12:33:08,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:08,309 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:08,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:33:08,313 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:33:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:08,314 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2020-12-03 12:33:08,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:08,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413245119] [2020-12-03 12:33:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:33:08,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413245119] [2020-12-03 12:33:08,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:08,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:33:08,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22612894] [2020-12-03 12:33:08,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:33:08,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:08,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:33:08,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:33:08,393 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2020-12-03 12:33:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:08,404 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-12-03 12:33:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:33:08,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-03 12:33:08,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:08,417 INFO L225 Difference]: With dead ends: 61 [2020-12-03 12:33:08,417 INFO L226 Difference]: Without dead ends: 60 [2020-12-03 12:33:08,418 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 [2020-12-03 12:33:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-03 12:33:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-12-03 12:33:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-03 12:33:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-12-03 12:33:08,429 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2020-12-03 12:33:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:08,429 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-12-03 12:33:08,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:33:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-12-03 12:33:08,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-03 12:33:08,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:08,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:08,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-03 12:33:08,435 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:33:08,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:08,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2020-12-03 12:33:08,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:08,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877919179] [2020-12-03 12:33:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:33:08,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877919179] [2020-12-03 12:33:08,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:08,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:33:08,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706631711] [2020-12-03 12:33:08,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:33:08,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:08,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:33:08,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:33:08,519 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-12-03 12:33:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:08,595 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2020-12-03 12:33:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:33:08,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-03 12:33:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:08,604 INFO L225 Difference]: With dead ends: 93 [2020-12-03 12:33:08,604 INFO L226 Difference]: Without dead ends: 92 [2020-12-03 12:33:08,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:33:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-03 12:33:08,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2020-12-03 12:33:08,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-03 12:33:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-12-03 12:33:08,624 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2020-12-03 12:33:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:08,624 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-12-03 12:33:08,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:33:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-12-03 12:33:08,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-03 12:33:08,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:08,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:08,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-03 12:33:08,626 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:33:08,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:08,627 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2020-12-03 12:33:08,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:08,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520830499] [2020-12-03 12:33:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:33:08,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520830499] [2020-12-03 12:33:08,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:08,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:33:08,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153813106] [2020-12-03 12:33:08,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:33:08,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:08,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:33:08,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:33:08,673 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2020-12-03 12:33:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:08,773 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-12-03 12:33:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:33:08,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-03 12:33:08,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:08,776 INFO L225 Difference]: With dead ends: 93 [2020-12-03 12:33:08,779 INFO L226 Difference]: Without dead ends: 89 [2020-12-03 12:33:08,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:33:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-03 12:33:08,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-12-03 12:33:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-03 12:33:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-12-03 12:33:08,806 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2020-12-03 12:33:08,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:08,806 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-12-03 12:33:08,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:33:08,810 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-12-03 12:33:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-03 12:33:08,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:08,813 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:08,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-03 12:33:08,814 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:33:08,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:08,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102097, now seen corresponding path program 1 times [2020-12-03 12:33:08,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:08,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2533396] [2020-12-03 12:33:08,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:33:08,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2533396] [2020-12-03 12:33:08,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651772462] [2020-12-03 12:33:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/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 12:33:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:08,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-03 12:33:08,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:33:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-03 12:33:09,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:33:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:33:09,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-03 12:33:09,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2020-12-03 12:33:09,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124145807] [2020-12-03 12:33:09,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:33:09,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:09,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:33:09,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:33:09,209 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 5 states. [2020-12-03 12:33:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:09,312 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2020-12-03 12:33:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:33:09,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-12-03 12:33:09,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:09,315 INFO L225 Difference]: With dead ends: 149 [2020-12-03 12:33:09,315 INFO L226 Difference]: Without dead ends: 78 [2020-12-03 12:33:09,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:33:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-03 12:33:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-03 12:33:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-03 12:33:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2020-12-03 12:33:09,341 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 24 [2020-12-03 12:33:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:09,342 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2020-12-03 12:33:09,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:33:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2020-12-03 12:33:09,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-03 12:33:09,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:09,345 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:09,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-03 12:33:09,546 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:33:09,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:09,547 INFO L82 PathProgramCache]: Analyzing trace with hash 407346927, now seen corresponding path program 1 times [2020-12-03 12:33:09,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:09,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540481136] [2020-12-03 12:33:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-03 12:33:09,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540481136] [2020-12-03 12:33:09,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:09,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-03 12:33:09,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868199501] [2020-12-03 12:33:09,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 12:33:09,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:09,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 12:33:09,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-03 12:33:09,705 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 8 states. [2020-12-03 12:33:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:09,781 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-12-03 12:33:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:33:09,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-12-03 12:33:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:09,783 INFO L225 Difference]: With dead ends: 78 [2020-12-03 12:33:09,784 INFO L226 Difference]: Without dead ends: 76 [2020-12-03 12:33:09,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-03 12:33:09,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-03 12:33:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-03 12:33:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-03 12:33:09,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2020-12-03 12:33:09,794 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 60 [2020-12-03 12:33:09,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:09,795 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2020-12-03 12:33:09,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 12:33:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2020-12-03 12:33:09,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-03 12:33:09,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:09,800 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:09,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-03 12:33:09,801 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:33:09,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:09,801 INFO L82 PathProgramCache]: Analyzing trace with hash -476747241, now seen corresponding path program 1 times [2020-12-03 12:33:09,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:09,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722706515] [2020-12-03 12:33:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-12-03 12:33:10,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722706515] [2020-12-03 12:33:10,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:10,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-03 12:33:10,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477024270] [2020-12-03 12:33:10,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 12:33:10,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:10,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 12:33:10,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-03 12:33:10,050 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 8 states. [2020-12-03 12:33:10,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:10,119 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2020-12-03 12:33:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:33:10,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-03 12:33:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:10,124 INFO L225 Difference]: With dead ends: 76 [2020-12-03 12:33:10,124 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:33:10,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-03 12:33:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:33:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:33:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:33:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:33:10,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2020-12-03 12:33:10,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:10,131 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:33:10,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 12:33:10,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:33:10,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:33:10,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-03 12:33:10,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:33:10,400 INFO L262 CegarLoopResult]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2020-12-03 12:33:10,401 INFO L258 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483645)) (and (<= f_~x 2147483645) (<= 1 f_~x))) [2020-12-03 12:33:10,402 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-03 12:33:10,402 INFO L262 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-12-03 12:33:10,402 INFO L262 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-12-03 12:33:10,402 INFO L262 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-12-03 12:33:10,402 INFO L258 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483645)) (and (<= f_~x 2147483645) (<= |f_#t~ret0| 0) (<= 1 f_~x) (<= 0 |f_#t~ret0|))) [2020-12-03 12:33:10,403 INFO L262 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-12-03 12:33:10,403 INFO L262 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-03 12:33:10,403 INFO L262 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-03 12:33:10,403 INFO L262 CegarLoopResult]: For program point L14-6(line 14) no Hoare annotation was computed. [2020-12-03 12:33:10,403 INFO L262 CegarLoopResult]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2020-12-03 12:33:10,403 INFO L262 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2020-12-03 12:33:10,403 INFO L265 CegarLoopResult]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2020-12-03 12:33:10,404 INFO L262 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-03 12:33:10,404 INFO L262 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-03 12:33:10,404 INFO L262 CegarLoopResult]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2020-12-03 12:33:10,404 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,404 INFO L262 CegarLoopResult]: For program point L19(lines 19 20) no Hoare annotation was computed. [2020-12-03 12:33:10,404 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,404 INFO L258 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (or (not (<= |g_#in~x| 2147483645)) (and (<= 1 g_~x) (<= g_~x 2147483645))) (or (and (<= |g_#in~x| g_~x) (<= g_~x 2147483647)) (not (<= |g_#in~x| 2147483647)))) [2020-12-03 12:33:10,405 INFO L262 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,405 INFO L262 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,405 INFO L262 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,405 INFO L258 CegarLoopResult]: At program point L20-6(line 20) the Hoare annotation is: (and (or (and (<= |g_#in~x| g_~x) (<= 0 |g_#t~ret2|) (<= g_~x 2147483647) (<= |g_#t~ret2| 0)) (not (<= |g_#in~x| 2147483647))) (or (not (<= |g_#in~x| 2147483645)) (and (<= 1 g_~x) (<= g_~x 2147483645)))) [2020-12-03 12:33:10,405 INFO L262 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,406 INFO L262 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,406 INFO L262 CegarLoopResult]: For program point L20-9(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,406 INFO L262 CegarLoopResult]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,406 INFO L262 CegarLoopResult]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2020-12-03 12:33:10,406 INFO L262 CegarLoopResult]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,406 INFO L265 CegarLoopResult]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2020-12-03 12:33:10,407 INFO L262 CegarLoopResult]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,407 INFO L262 CegarLoopResult]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,407 INFO L262 CegarLoopResult]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,407 INFO L262 CegarLoopResult]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-03 12:33:10,407 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:33:10,407 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:33:10,407 INFO L258 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-12-03 12:33:10,407 INFO L262 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-12-03 12:33:10,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:33:10 BoogieIcfgContainer [2020-12-03 12:33:10,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:33:10,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:33:10,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:33:10,415 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:33:10,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:07" (3/4) ... [2020-12-03 12:33:10,418 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:33:10,424 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-12-03 12:33:10,424 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2020-12-03 12:33:10,434 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-03 12:33:10,434 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-03 12:33:10,434 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:33:10,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e89ba8fb-539b-42cb-88a4-bcedbf3a725a/bin/utaipan/witness.graphml [2020-12-03 12:33:10,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:33:10,483 INFO L168 Benchmark]: Toolchain (without parser) took 3881.75 ms. Allocated memory was 81.8 MB in the beginning and 125.8 MB in the end (delta: 44.0 MB). Free memory was 60.7 MB in the beginning and 94.8 MB in the end (delta: -34.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:10,483 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 81.8 MB. Free memory was 57.0 MB in the beginning and 56.9 MB in the end (delta: 59.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:33:10,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.66 ms. Allocated memory is still 81.8 MB. Free memory was 60.5 MB in the beginning and 54.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:10,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.09 ms. Allocated memory is still 81.8 MB. Free memory was 54.9 MB in the beginning and 53.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:10,485 INFO L168 Benchmark]: Boogie Preprocessor took 16.84 ms. Allocated memory is still 81.8 MB. Free memory was 53.7 MB in the beginning and 52.8 MB in the end (delta: 878.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:33:10,486 INFO L168 Benchmark]: RCFGBuilder took 394.67 ms. Allocated memory is still 81.8 MB. Free memory was 52.6 MB in the beginning and 55.5 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:10,486 INFO L168 Benchmark]: TraceAbstraction took 3169.08 ms. Allocated memory was 81.8 MB in the beginning and 125.8 MB in the end (delta: 44.0 MB). Free memory was 55.1 MB in the beginning and 96.9 MB in the end (delta: -41.8 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:10,487 INFO L168 Benchmark]: Witness Printer took 66.37 ms. Allocated memory is still 125.8 MB. Free memory was 96.9 MB in the beginning and 94.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:10,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 81.8 MB. Free memory was 57.0 MB in the beginning and 56.9 MB in the end (delta: 59.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 199.66 ms. Allocated memory is still 81.8 MB. Free memory was 60.5 MB in the beginning and 54.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.09 ms. Allocated memory is still 81.8 MB. Free memory was 54.9 MB in the beginning and 53.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.84 ms. Allocated memory is still 81.8 MB. Free memory was 53.7 MB in the beginning and 52.8 MB in the end (delta: 878.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 394.67 ms. Allocated memory is still 81.8 MB. Free memory was 52.6 MB in the beginning and 55.5 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3169.08 ms. Allocated memory was 81.8 MB in the beginning and 125.8 MB in the end (delta: 44.0 MB). Free memory was 55.1 MB in the beginning and 96.9 MB in the end (delta: -41.8 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. * Witness Printer took 66.37 ms. Allocated memory is still 125.8 MB. Free memory was 96.9 MB in the beginning and 94.8 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: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 40 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 10, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 280 SDtfs, 184 SDslu, 740 SDs, 0 SdLazy, 365 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 64 PreInvPairs, 76 NumberOfFragments, 91 HoareAnnotationTreeSize, 64 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 303 NumberOfCodeBlocks, 303 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 34590 SizeOfPredicates, 3 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 343/349 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...