./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs --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 c8c2842840d9df2fd19d5532fbc3700c74bea362cad75e31db6c666eb38ff4df --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:19:07,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:19:07,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:19:07,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:19:07,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:19:07,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:19:07,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:19:07,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:19:07,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:19:07,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:19:07,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:19:07,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:19:07,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:19:07,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:19:07,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:19:07,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:19:07,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:19:07,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:19:07,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:19:07,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:19:07,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:19:07,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:19:07,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:19:07,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:19:07,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:19:07,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:19:07,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:19:07,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:19:07,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:19:07,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:19:07,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:19:07,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:19:07,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:19:07,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:19:07,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:19:07,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:19:07,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:19:07,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:19:07,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:19:07,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:19:07,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:19:07,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-19 13:19:07,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:19:07,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:19:07,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:19:07,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:19:07,315 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:19:07,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:19:07,315 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:19:07,315 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:19:07,316 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:19:07,316 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:19:07,316 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:19:07,316 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:19:07,317 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:19:07,317 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:19:07,317 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:19:07,317 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:19:07,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:19:07,319 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:19:07,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:19:07,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:19:07,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:19:07,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:19:07,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:19:07,320 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-19 13:19:07,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:19:07,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:19:07,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:19:07,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:19:07,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:19:07,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:07,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:19:07,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:19:07,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:19:07,323 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:19:07,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:19:07,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:19:07,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:19:07,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:19:07,324 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_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8c2842840d9df2fd19d5532fbc3700c74bea362cad75e31db6c666eb38ff4df [2021-11-19 13:19:07,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:19:07,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:19:07,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:19:07,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:19:07,701 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:19:07,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2021-11-19 13:19:07,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/data/7d1dfe173/2c933585a48748d8bf61c55d928e409a/FLAGb2cb7fbb6 [2021-11-19 13:19:08,330 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:19:08,331 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2021-11-19 13:19:08,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/data/7d1dfe173/2c933585a48748d8bf61c55d928e409a/FLAGb2cb7fbb6 [2021-11-19 13:19:08,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/data/7d1dfe173/2c933585a48748d8bf61c55d928e409a [2021-11-19 13:19:08,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:19:08,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:19:08,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:08,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:19:08,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:19:08,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c8e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08, skipping insertion in model container [2021-11-19 13:19:08,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:19:08,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:19:08,894 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:08,903 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:19:08,916 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:08,927 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:19:08,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08 WrapperNode [2021-11-19 13:19:08,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:08,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:19:08,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:19:08,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:19:08,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,960 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-11-19 13:19:08,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:19:08,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:19:08,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:19:08,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:19:08,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:08,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:19:08,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:19:08,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:19:08,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:19:08,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (1/1) ... [2021-11-19 13:19:09,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:09,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:09,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:19:09,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:19:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:19:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:19:09,161 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:19:09,162 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:19:09,265 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:19:09,283 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:19:09,283 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:19:09,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:19:09 BoogieIcfgContainer [2021-11-19 13:19:09,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:19:09,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:19:09,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:19:09,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:19:09,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:19:08" (1/3) ... [2021-11-19 13:19:09,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751eb0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:19:09, skipping insertion in model container [2021-11-19 13:19:09,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:08" (2/3) ... [2021-11-19 13:19:09,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751eb0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:19:09, skipping insertion in model container [2021-11-19 13:19:09,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:19:09" (3/3) ... [2021-11-19 13:19:09,297 INFO L111 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified.c [2021-11-19 13:19:09,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:19:09,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-19 13:19:09,365 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:19:09,374 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:19:09,375 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 13:19:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 13:19:09,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:09,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 13:19:09,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 13:19:09,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:09,405 INFO L85 PathProgramCache]: Analyzing trace with hash 65732945, now seen corresponding path program 1 times [2021-11-19 13:19:09,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:09,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118878719] [2021-11-19 13:19:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:09,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:09,636 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:09,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118878719] [2021-11-19 13:19:09,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118878719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:09,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:09,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:19:09,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228710344] [2021-11-19 13:19:09,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:09,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:19:09,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:09,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:19:09,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:09,735 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:09,828 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-11-19 13:19:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:19:09,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 13:19:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:09,841 INFO L225 Difference]: With dead ends: 20 [2021-11-19 13:19:09,841 INFO L226 Difference]: Without dead ends: 14 [2021-11-19 13:19:09,845 INFO L932 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 [2021-11-19 13:19:09,851 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:09,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-19 13:19:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-19 13:19:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-19 13:19:09,927 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-11-19 13:19:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:09,927 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-19 13:19:09,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:09,928 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-19 13:19:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 13:19:09,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:09,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 13:19:09,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:19:09,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 13:19:09,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash 65733137, now seen corresponding path program 1 times [2021-11-19 13:19:09,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:09,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555391542] [2021-11-19 13:19:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:09,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:09,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:09,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555391542] [2021-11-19 13:19:09,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555391542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:09,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:09,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:19:09,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012301225] [2021-11-19 13:19:09,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:09,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:19:09,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:19:09,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:09,997 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:10,077 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-11-19 13:19:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:19:10,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 13:19:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:10,079 INFO L225 Difference]: With dead ends: 16 [2021-11-19 13:19:10,079 INFO L226 Difference]: Without dead ends: 14 [2021-11-19 13:19:10,080 INFO L932 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 [2021-11-19 13:19:10,082 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:10,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:10,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-19 13:19:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-19 13:19:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-19 13:19:10,090 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-11-19 13:19:10,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:10,091 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-19 13:19:10,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-19 13:19:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 13:19:10,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:10,100 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-11-19 13:19:10,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:19:10,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 13:19:10,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:10,101 INFO L85 PathProgramCache]: Analyzing trace with hash 688900812, now seen corresponding path program 1 times [2021-11-19 13:19:10,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:10,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549610553] [2021-11-19 13:19:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:10,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:10,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:10,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549610553] [2021-11-19 13:19:10,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549610553] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:19:10,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785069653] [2021-11-19 13:19:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:10,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:10,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:10,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:19:10,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:19:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:10,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:19:10,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:10,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:10,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785069653] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:19:10,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:19:10,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2021-11-19 13:19:10,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194377466] [2021-11-19 13:19:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:10,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:19:10,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:19:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:19:10,701 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:10,796 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-11-19 13:19:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:19:10,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 13:19:10,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:10,799 INFO L225 Difference]: With dead ends: 32 [2021-11-19 13:19:10,799 INFO L226 Difference]: Without dead ends: 31 [2021-11-19 13:19:10,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:19:10,805 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:10,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-19 13:19:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2021-11-19 13:19:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-19 13:19:10,821 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2021-11-19 13:19:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:10,821 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-19 13:19:10,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-19 13:19:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 13:19:10,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:10,823 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:10,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-19 13:19:11,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:11,040 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 13:19:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash 688901004, now seen corresponding path program 1 times [2021-11-19 13:19:11,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:11,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055691374] [2021-11-19 13:19:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:11,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:11,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:11,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055691374] [2021-11-19 13:19:11,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055691374] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:19:11,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748275108] [2021-11-19 13:19:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:11,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:11,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:11,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:19:11,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 13:19:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:11,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:19:11,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:11,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:11,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748275108] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:19:11,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:19:11,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2021-11-19 13:19:11,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767724602] [2021-11-19 13:19:11,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:11,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:19:11,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:19:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:19:11,343 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:11,432 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-19 13:19:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:19:11,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 13:19:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:11,436 INFO L225 Difference]: With dead ends: 28 [2021-11-19 13:19:11,436 INFO L226 Difference]: Without dead ends: 27 [2021-11-19 13:19:11,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:19:11,447 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:11,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-19 13:19:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-11-19 13:19:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-19 13:19:11,464 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 9 [2021-11-19 13:19:11,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:11,465 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-19 13:19:11,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-19 13:19:11,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 13:19:11,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:11,467 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:11,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:11,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:11,682 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 13:19:11,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:11,682 INFO L85 PathProgramCache]: Analyzing trace with hash 866395590, now seen corresponding path program 1 times [2021-11-19 13:19:11,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:19:11,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377487947] [2021-11-19 13:19:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:11,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:19:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:11,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:19:11,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377487947] [2021-11-19 13:19:11,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377487947] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:19:11,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669380743] [2021-11-19 13:19:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:11,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:11,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:11,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:19:11,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 13:19:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:11,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:19:11,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:11,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:11,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669380743] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:19:11,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [366658923] [2021-11-19 13:19:11,934 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 13:19:11,934 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:19:11,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:19:11,949 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:19:11,949 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:19:11,991 INFO L180 QuantifierPusher]: treesize reduction 18, result has 63.3 percent of original size [2021-11-19 13:19:11,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 13:19:12,005 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:19:12,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [366658923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:12,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:19:12,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 11 [2021-11-19 13:19:12,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733565712] [2021-11-19 13:19:12,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:12,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:19:12,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:19:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:19:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:19:12,196 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:12,235 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-11-19 13:19:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:19:12,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 13:19:12,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:12,237 INFO L225 Difference]: With dead ends: 23 [2021-11-19 13:19:12,237 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 13:19:12,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:19:12,238 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:12,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:19:12,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 13:19:12,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 13:19:12,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 13:19:12,240 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-11-19 13:19:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:12,240 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 13:19:12,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 13:19:12,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 13:19:12,245 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-11-19 13:19:12,245 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-11-19 13:19:12,246 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-11-19 13:19:12,246 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-11-19 13:19:12,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:12,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:19:12,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 13:19:12,516 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-11-19 13:19:12,516 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 13:19:12,516 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-11-19 13:19:12,516 INFO L858 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-11-19 13:19:12,517 INFO L858 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-11-19 13:19:12,517 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-11-19 13:19:12,517 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-19 13:19:12,517 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-11-19 13:19:12,517 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-11-19 13:19:12,518 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 13:19:12,518 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2021-11-19 13:19:12,518 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 28) no Hoare annotation was computed. [2021-11-19 13:19:12,518 INFO L854 garLoopResultBuilder]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= 0 |ULTIMATE.start_main_~y2~0#1|) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647)) [2021-11-19 13:19:12,519 INFO L854 garLoopResultBuilder]: At program point L20-1(lines 20 28) the Hoare annotation is: (<= |ULTIMATE.start_main_~y1~0#1| 2147483647) [2021-11-19 13:19:12,522 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-19 13:19:12,524 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 13:19:12,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:19:12 BoogieIcfgContainer [2021-11-19 13:19:12,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 13:19:12,541 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 13:19:12,542 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 13:19:12,542 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 13:19:12,542 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:19:09" (3/4) ... [2021-11-19 13:19:12,545 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 13:19:12,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-19 13:19:12,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-19 13:19:12,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 13:19:12,588 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 13:19:12,589 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 13:19:12,590 INFO L158 Benchmark]: Toolchain (without parser) took 3880.73ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 73.8MB in the beginning and 101.6MB in the end (delta: -27.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:19:12,590 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 113.2MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:19:12,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.39ms. Allocated memory is still 113.2MB. Free memory was 73.6MB in the beginning and 89.7MB in the end (delta: -16.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:19:12,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.70ms. Allocated memory is still 113.2MB. Free memory was 89.7MB in the beginning and 88.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:19:12,591 INFO L158 Benchmark]: Boogie Preprocessor took 22.67ms. Allocated memory is still 113.2MB. Free memory was 88.4MB in the beginning and 87.6MB in the end (delta: 873.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:19:12,592 INFO L158 Benchmark]: RCFGBuilder took 301.06ms. Allocated memory is still 113.2MB. Free memory was 87.6MB in the beginning and 78.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:19:12,592 INFO L158 Benchmark]: TraceAbstraction took 3252.98ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 78.0MB in the beginning and 103.7MB in the end (delta: -25.7MB). Peak memory consumption was 456.3kB. Max. memory is 16.1GB. [2021-11-19 13:19:12,593 INFO L158 Benchmark]: Witness Printer took 47.58ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:19:12,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 113.2MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.39ms. Allocated memory is still 113.2MB. Free memory was 73.6MB in the beginning and 89.7MB in the end (delta: -16.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.70ms. Allocated memory is still 113.2MB. Free memory was 89.7MB in the beginning and 88.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.67ms. Allocated memory is still 113.2MB. Free memory was 88.4MB in the beginning and 87.6MB in the end (delta: 873.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 301.06ms. Allocated memory is still 113.2MB. Free memory was 87.6MB in the beginning and 78.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3252.98ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 78.0MB in the beginning and 103.7MB in the end (delta: -25.7MB). Peak memory consumption was 456.3kB. Max. memory is 16.1GB. * Witness Printer took 47.58ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 157 IncrementalHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 2 mSDtfsCounter, 157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, InterpolantAutomatonStates: 26, 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, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 426 SizeOfPredicates, 3 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 5/21 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: OVERALL_TIME: 0.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 6, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 11, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 11, TOOLS_QUANTIFIERELIM_TIME: 0.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 23, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 6, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 49, DAG_COMPRESSION_RETAINED_NODES: 25, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: y1 <= 2147483647 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((y2 <= 2147483647 && 0 <= y1) && 0 <= y2) && y1 <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-11-19 13:19:12,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158dabad-b68f-4991-ac26-2645d2d31a40/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE