./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Piecewise.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Piecewise.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH --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 ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:55:08,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:55:08,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:55:08,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:55:08,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:55:08,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:55:08,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:55:08,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:55:08,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:55:08,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:55:08,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:55:08,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:55:08,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:55:08,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:55:08,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:55:08,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:55:08,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:55:08,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:55:08,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:55:08,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:55:08,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:55:08,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:55:08,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:55:08,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:55:08,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:55:08,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:55:08,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:55:08,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:55:08,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:55:08,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:55:08,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:55:08,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:55:08,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:55:08,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:55:08,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:55:08,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:55:08,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:55:08,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:55:08,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:55:08,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:55:08,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:55:08,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 03:55:08,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:55:08,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:55:08,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:55:08,336 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:55:08,336 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:55:08,337 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:55:08,337 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:55:08,337 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:55:08,337 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:55:08,338 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:55:08,339 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:55:08,340 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:55:08,340 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:55:08,340 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:55:08,341 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:55:08,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:55:08,342 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:55:08,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:55:08,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:55:08,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:55:08,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:55:08,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:55:08,344 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 03:55:08,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:55:08,344 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:55:08,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:55:08,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:55:08,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:55:08,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:55:08,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:55:08,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:55:08,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:55:08,350 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:55:08,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:55:08,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:55:08,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:55:08,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:55:08,351 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_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 [2021-11-03 03:55:08,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:55:08,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:55:08,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:55:08,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:55:08,726 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:55:08,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted/Piecewise.c [2021-11-03 03:55:08,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/data/69de21163/5a5d1d1ed0bc44dfb379d45dc9813396/FLAGb7c6a039f [2021-11-03 03:55:09,393 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:55:09,393 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/sv-benchmarks/c/termination-crafted/Piecewise.c [2021-11-03 03:55:09,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/data/69de21163/5a5d1d1ed0bc44dfb379d45dc9813396/FLAGb7c6a039f [2021-11-03 03:55:09,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/data/69de21163/5a5d1d1ed0bc44dfb379d45dc9813396 [2021-11-03 03:55:09,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:55:09,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:55:09,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:55:09,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:55:09,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:55:09,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:55:09" (1/1) ... [2021-11-03 03:55:09,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a908b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:09, skipping insertion in model container [2021-11-03 03:55:09,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:55:09" (1/1) ... [2021-11-03 03:55:09,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:55:09,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:55:10,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:55:10,041 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:55:10,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:55:10,080 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:55:10,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10 WrapperNode [2021-11-03 03:55:10,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:55:10,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:55:10,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:55:10,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:55:10,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (1/1) ... [2021-11-03 03:55:10,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (1/1) ... [2021-11-03 03:55:10,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:55:10,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:55:10,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:55:10,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:55:10,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (1/1) ... [2021-11-03 03:55:10,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (1/1) ... [2021-11-03 03:55:10,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (1/1) ... [2021-11-03 03:55:10,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (1/1) ... [2021-11-03 03:55:10,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (1/1) ... [2021-11-03 03:55:10,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (1/1) ... [2021-11-03 03:55:10,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (1/1) ... [2021-11-03 03:55:10,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:55:10,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:55:10,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:55:10,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:55:10,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (1/1) ... [2021-11-03 03:55:10,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:55:10,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:55:10,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:55:10,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:55:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:55:10,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:55:10,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:55:10,464 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-03 03:55:10,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:55:10 BoogieIcfgContainer [2021-11-03 03:55:10,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:55:10,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:55:10,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:55:10,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:55:10,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:55:09" (1/3) ... [2021-11-03 03:55:10,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22173dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:55:10, skipping insertion in model container [2021-11-03 03:55:10,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:10" (2/3) ... [2021-11-03 03:55:10,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22173dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:55:10, skipping insertion in model container [2021-11-03 03:55:10,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:55:10" (3/3) ... [2021-11-03 03:55:10,503 INFO L111 eAbstractionObserver]: Analyzing ICFG Piecewise.c [2021-11-03 03:55:10,510 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:55:10,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 03:55:10,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:55:10,600 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 [2021-11-03 03:55:10,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 03:55:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.875) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-11-03 03:55:10,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 03:55:10,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:10,659 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 03:55:10,659 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)] === [2021-11-03 03:55:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:10,667 INFO L85 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-11-03 03:55:10,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:10,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011355626] [2021-11-03 03:55:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:10,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:10,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:10,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011355626] [2021-11-03 03:55:10,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011355626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:10,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:10,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 03:55:10,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255562028] [2021-11-03 03:55:10,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:55:10,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:10,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:55:10,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:55:10,921 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.875) internal successors, (15), 12 states have internal predecessors, (15), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-03 03:55:11,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:11,003 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-11-03 03:55:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:55:11,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-03 03:55:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:11,019 INFO L225 Difference]: With dead ends: 13 [2021-11-03 03:55:11,019 INFO L226 Difference]: Without dead ends: 11 [2021-11-03 03:55:11,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:55:11,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-03 03:55:11,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-03 03:55:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-11-03 03:55:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-03 03:55:11,065 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2021-11-03 03:55:11,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:11,068 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-03 03:55:11,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-03 03:55:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-03 03:55:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 03:55:11,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:11,070 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 03:55:11,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:55:11,071 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)] === [2021-11-03 03:55:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash 29869546, now seen corresponding path program 1 times [2021-11-03 03:55:11,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:11,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175925987] [2021-11-03 03:55:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:11,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:11,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:11,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175925987] [2021-11-03 03:55:11,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175925987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:11,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:11,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 03:55:11,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526475521] [2021-11-03 03:55:11,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:55:11,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:11,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:55:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:55:11,151 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-03 03:55:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:11,197 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-11-03 03:55:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:55:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2021-11-03 03:55:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:11,199 INFO L225 Difference]: With dead ends: 11 [2021-11-03 03:55:11,199 INFO L226 Difference]: Without dead ends: 10 [2021-11-03 03:55:11,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:55:11,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-03 03:55:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-03 03:55:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-11-03 03:55:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-03 03:55:11,204 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2021-11-03 03:55:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:11,204 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-03 03:55:11,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-03 03:55:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-03 03:55:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 03:55:11,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:11,206 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 03:55:11,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:55:11,206 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 03:55:11,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:11,207 INFO L85 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-11-03 03:55:11,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:11,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327368893] [2021-11-03 03:55:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:11,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:11,266 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:11,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327368893] [2021-11-03 03:55:11,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327368893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:11,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:11,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:55:11,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241946448] [2021-11-03 03:55:11,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:55:11,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:11,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:55:11,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:55:11,283 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2021-11-03 03:55:11,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:11,323 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-11-03 03:55:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:55:11,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2021-11-03 03:55:11,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:11,326 INFO L225 Difference]: With dead ends: 11 [2021-11-03 03:55:11,326 INFO L226 Difference]: Without dead ends: 10 [2021-11-03 03:55:11,327 INFO L786 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 [2021-11-03 03:55:11,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-03 03:55:11,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-11-03 03:55:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-11-03 03:55:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-03 03:55:11,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2021-11-03 03:55:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:11,334 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-03 03:55:11,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2021-11-03 03:55:11,335 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-03 03:55:11,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 03:55:11,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:11,337 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 03:55:11,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:55:11,338 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 03:55:11,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 925955982, now seen corresponding path program 1 times [2021-11-03 03:55:11,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:11,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478396248] [2021-11-03 03:55:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:11,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:11,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:11,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478396248] [2021-11-03 03:55:11,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478396248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:11,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:11,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:55:11,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417750739] [2021-11-03 03:55:11,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:55:11,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:11,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:55:11,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:55:11,414 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-03 03:55:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:11,440 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2021-11-03 03:55:11,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:55:11,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-11-03 03:55:11,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:11,443 INFO L225 Difference]: With dead ends: 10 [2021-11-03 03:55:11,443 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 03:55:11,444 INFO L786 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 [2021-11-03 03:55:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 03:55:11,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 03:55:11,445 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) [2021-11-03 03:55:11,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 03:55:11,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-11-03 03:55:11,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:11,446 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 03:55:11,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-03 03:55:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 03:55:11,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 03:55:11,452 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:55:11,453 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:55:11,453 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:55:11,454 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:55:11,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 03:55:11,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 03:55:11,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:55:11,513 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-11-03 03:55:11,519 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 03:55:11,519 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2021-11-03 03:55:11,519 INFO L857 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2021-11-03 03:55:11,520 INFO L857 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-11-03 03:55:11,520 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 29) no Hoare annotation was computed. [2021-11-03 03:55:11,520 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-11-03 03:55:11,521 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2021-11-03 03:55:11,521 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 03:55:11,522 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 29) no Hoare annotation was computed. [2021-11-03 03:55:11,522 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-11-03 03:55:11,523 INFO L853 garLoopResultBuilder]: At program point L26-2(lines 22 30) the Hoare annotation is: (and (<= ULTIMATE.start_main_~q~0 2147483647) (<= ULTIMATE.start_main_~p~0 2147483647)) [2021-11-03 03:55:11,523 INFO L857 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-11-03 03:55:11,527 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-03 03:55:11,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:55:11,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:55:11 BoogieIcfgContainer [2021-11-03 03:55:11,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:55:11,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:55:11,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:55:11,548 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:55:11,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:55:10" (3/4) ... [2021-11-03 03:55:11,553 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 03:55:11,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-03 03:55:11,566 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-03 03:55:11,567 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 03:55:11,628 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 03:55:11,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:55:11,631 INFO L168 Benchmark]: Toolchain (without parser) took 1808.88 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 59.0 MB in the beginning and 92.5 MB in the end (delta: -33.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:55:11,632 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:55:11,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.49 ms. Allocated memory is still 94.4 MB. Free memory was 58.7 MB in the beginning and 71.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:55:11,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.57 ms. Allocated memory is still 94.4 MB. Free memory was 71.0 MB in the beginning and 69.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:55:11,635 INFO L168 Benchmark]: Boogie Preprocessor took 20.81 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:55:11,638 INFO L168 Benchmark]: RCFGBuilder took 338.95 ms. Allocated memory is still 94.4 MB. Free memory was 68.6 MB in the beginning and 59.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:55:11,639 INFO L168 Benchmark]: TraceAbstraction took 1063.49 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 59.4 MB in the beginning and 95.3 MB in the end (delta: -35.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:55:11,640 INFO L168 Benchmark]: Witness Printer took 81.52 ms. Allocated memory is still 125.8 MB. Free memory was 95.3 MB in the beginning and 92.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:55:11,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.49 ms. Allocated memory is still 94.4 MB. Free memory was 58.7 MB in the beginning and 71.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.57 ms. Allocated memory is still 94.4 MB. Free memory was 71.0 MB in the beginning and 69.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.81 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 338.95 ms. Allocated memory is still 94.4 MB. Free memory was 68.6 MB in the beginning and 59.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1063.49 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 59.4 MB in the beginning and 95.3 MB in the end (delta: -35.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 81.52 ms. Allocated memory is still 125.8 MB. Free memory was 95.3 MB in the beginning and 92.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: 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, 13 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 23 SDslu, 0 SDs, 0 SdLazy, 37 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: q <= 2147483647 && p <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-11-03 03:55:11,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e275e51-9e8e-4435-bd37-49151a462cd5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE