./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8 --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 df3ddc93bc6339292c9158119f1fdb949bb8842d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:53:32,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:53:32,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:53:32,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:53:32,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:53:32,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:53:32,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:53:32,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:53:32,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:53:32,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:53:32,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:53:32,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:53:32,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:53:32,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:53:32,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:53:32,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:53:32,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:53:32,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:53:32,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:53:32,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:53:32,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:53:32,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:53:32,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:53:32,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:53:32,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:53:32,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:53:32,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:53:32,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:53:32,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:53:32,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:53:32,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:53:32,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:53:32,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:53:32,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:53:32,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:53:32,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:53:32,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:53:32,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:53:32,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:53:32,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:53:32,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:53:32,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-13 06:53:32,249 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:53:32,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:53:32,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:53:32,251 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:53:32,252 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:53:32,252 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:53:32,252 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:53:32,252 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:53:32,253 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:53:32,253 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:53:32,260 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:53:32,260 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:53:32,261 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:53:32,261 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:53:32,261 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:53:32,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:53:32,262 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 06:53:32,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:53:32,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:53:32,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:53:32,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:53:32,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:53:32,264 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 06:53:32,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:53:32,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:53:32,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:53:32,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:53:32,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:53:32,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:53:32,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:53:32,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:53:32,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:53:32,268 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:53:32,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:53:32,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:53:32,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:53:32,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:53:32,269 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_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df3ddc93bc6339292c9158119f1fdb949bb8842d [2021-10-13 06:53:32,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:53:32,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:53:32,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:53:32,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:53:32,546 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:53:32,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2021-10-13 06:53:32,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/data/9001c8e11/41ca86451b4945b18041a73d66f63d2c/FLAG8687ca378 [2021-10-13 06:53:33,027 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:53:33,028 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2021-10-13 06:53:33,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/data/9001c8e11/41ca86451b4945b18041a73d66f63d2c/FLAG8687ca378 [2021-10-13 06:53:33,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/data/9001c8e11/41ca86451b4945b18041a73d66f63d2c [2021-10-13 06:53:33,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:53:33,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:53:33,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:53:33,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:53:33,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:53:33,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ec6b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33, skipping insertion in model container [2021-10-13 06:53:33,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:53:33,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:53:33,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:53:33,622 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:53:33,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:53:33,677 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:53:33,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33 WrapperNode [2021-10-13 06:53:33,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:53:33,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:53:33,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:53:33,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:53:33,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:53:33,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:53:33,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:53:33,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:53:33,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:53:33,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:53:33,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:53:33,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:53:33,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (1/1) ... [2021-10-13 06:53:33,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:53:33,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:53:33,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:53:33,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:53:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:53:33,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:53:33,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:53:33,959 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 06:53:33,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:53:33 BoogieIcfgContainer [2021-10-13 06:53:33,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:53:33,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:53:33,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:53:33,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:53:33,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:53:33" (1/3) ... [2021-10-13 06:53:33,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8c08cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:53:33, skipping insertion in model container [2021-10-13 06:53:33,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:33" (2/3) ... [2021-10-13 06:53:33,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8c08cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:53:33, skipping insertion in model container [2021-10-13 06:53:33,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:53:33" (3/3) ... [2021-10-13 06:53:33,977 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2021-10-13 06:53:33,982 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:53:33,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-13 06:53:34,029 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:53:34,038 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, mConcurrency=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 [2021-10-13 06:53:34,038 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 06:53:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 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) [2021-10-13 06:53:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 06:53:34,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:53:34,058 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 06:53:34,058 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 06:53:34,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:53:34,064 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-13 06:53:34,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:53:34,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966155854] [2021-10-13 06:53:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:34,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:53:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:53:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:53:34,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:53:34,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966155854] [2021-10-13 06:53:34,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966155854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:53:34,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:53:34,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:53:34,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803188333] [2021-10-13 06:53:34,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:53:34,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:53:34,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:53:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:53:34,219 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2021-10-13 06:53:34,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:53:34,254 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-13 06:53:34,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:53:34,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2021-10-13 06:53:34,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:53:34,263 INFO L225 Difference]: With dead ends: 12 [2021-10-13 06:53:34,264 INFO L226 Difference]: Without dead ends: 10 [2021-10-13 06:53:34,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:53:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-13 06:53:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 06:53:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 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) [2021-10-13 06:53:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-13 06:53:34,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-10-13 06:53:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:53:34,328 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-13 06:53:34,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2021-10-13 06:53:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-13 06:53:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 06:53:34,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:53:34,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 06:53:34,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:53:34,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 06:53:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:53:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-13 06:53:34,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:53:34,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24026929] [2021-10-13 06:53:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:34,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:53:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:53:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:53:34,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:53:34,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24026929] [2021-10-13 06:53:34,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24026929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:53:34,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:53:34,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 06:53:34,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210487166] [2021-10-13 06:53:34,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:53:34,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:53:34,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:53:34,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:53:34,388 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. 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) [2021-10-13 06:53:34,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:53:34,432 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-13 06:53:34,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:53:34,432 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 [2021-10-13 06:53:34,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:53:34,433 INFO L225 Difference]: With dead ends: 15 [2021-10-13 06:53:34,433 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 06:53:34,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:53:34,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 06:53:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 06:53:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-10-13 06:53:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-13 06:53:34,455 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 4 [2021-10-13 06:53:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:53:34,455 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-13 06:53:34,455 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) [2021-10-13 06:53:34,455 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-13 06:53:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 06:53:34,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:53:34,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 06:53:34,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:53:34,457 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 06:53:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:53:34,457 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-13 06:53:34,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:53:34,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371033441] [2021-10-13 06:53:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:34,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:53:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:53:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:53:34,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:53:34,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371033441] [2021-10-13 06:53:34,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371033441] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:53:34,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:53:34,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 06:53:34,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779124850] [2021-10-13 06:53:34,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:53:34,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:53:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:53:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:53:34,484 INFO L87 Difference]: Start difference. First operand 14 states and 17 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) [2021-10-13 06:53:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:53:34,502 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2021-10-13 06:53:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:53:34,502 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 [2021-10-13 06:53:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:53:34,503 INFO L225 Difference]: With dead ends: 14 [2021-10-13 06:53:34,503 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 06:53:34,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:53:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 06:53:34,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 06:53:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 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) [2021-10-13 06:53:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-10-13 06:53:34,507 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 5 [2021-10-13 06:53:34,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:53:34,508 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-10-13 06:53:34,508 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) [2021-10-13 06:53:34,508 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-10-13 06:53:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 06:53:34,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:53:34,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 06:53:34,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 06:53:34,509 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 06:53:34,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:53:34,510 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-13 06:53:34,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:53:34,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218392636] [2021-10-13 06:53:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:34,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:53:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:53:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:53:34,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:53:34,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218392636] [2021-10-13 06:53:34,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218392636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:53:34,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:53:34,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:53:34,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244259653] [2021-10-13 06:53:34,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:53:34,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:53:34,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:53:34,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:53:34,537 INFO L87 Difference]: Start difference. First operand 13 states and 16 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) [2021-10-13 06:53:34,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:53:34,552 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2021-10-13 06:53:34,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:53:34,553 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 [2021-10-13 06:53:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:53:34,554 INFO L225 Difference]: With dead ends: 13 [2021-10-13 06:53:34,554 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 06:53:34,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:53:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 06:53:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 06:53:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-10-13 06:53:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-13 06:53:34,558 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2021-10-13 06:53:34,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:53:34,558 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-13 06:53:34,558 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) [2021-10-13 06:53:34,559 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-10-13 06:53:34,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:53:34,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:53:34,559 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 06:53:34,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 06:53:34,560 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)] === [2021-10-13 06:53:34,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:53:34,561 INFO L82 PathProgramCache]: Analyzing trace with hash 784501120, now seen corresponding path program 1 times [2021-10-13 06:53:34,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:53:34,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744474561] [2021-10-13 06:53:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:34,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:53:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:53:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:53:34,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:53:34,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744474561] [2021-10-13 06:53:34,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744474561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:53:34,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266782819] [2021-10-13 06:53:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:34,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:53:34,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:53:34,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:53:34,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:53:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:53:34,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:53:34,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:53:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:53:34,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:53:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:53:34,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266782819] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:53:34,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 06:53:34,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2021-10-13 06:53:34,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548314022] [2021-10-13 06:53:34,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:53:34,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:53:34,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:53:34,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:53:34,876 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-13 06:53:34,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:53:34,928 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2021-10-13 06:53:34,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:53:34,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 8 [2021-10-13 06:53:34,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:53:34,930 INFO L225 Difference]: With dead ends: 20 [2021-10-13 06:53:34,930 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:53:34,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:53:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:53:34,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:53:34,931 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) [2021-10-13 06:53:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:53:34,932 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-13 06:53:34,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:53:34,932 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:53:34,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-13 06:53:34,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:53:34,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:53:34,935 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 06:53:34,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 06:53:34,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 06:53:34,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 06:53:34,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:53:35,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:53:35,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:53:35,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:53:35,194 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-13 06:53:35,195 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:53:35,195 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 06:53:35,195 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 21) no Hoare annotation was computed. [2021-10-13 06:53:35,199 INFO L853 garLoopResultBuilder]: At program point L17-2(lines 16 22) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2021-10-13 06:53:35,200 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-13 06:53:35,200 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 06:53:35,200 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:53:35,201 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-13 06:53:35,201 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-13 06:53:35,201 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-13 06:53:35,201 INFO L857 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-10-13 06:53:35,206 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:53:35,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:53:35 BoogieIcfgContainer [2021-10-13 06:53:35,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:53:35,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:53:35,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:53:35,221 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:53:35,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:53:33" (3/4) ... [2021-10-13 06:53:35,231 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:53:35,239 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-13 06:53:35,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 06:53:35,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:53:35,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:53:35,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:53:35,276 INFO L168 Benchmark]: Toolchain (without parser) took 1838.71 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 56.0 MB in the beginning and 78.9 MB in the end (delta: -22.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:35,277 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 62.3 MB in the beginning and 62.3 MB in the end (delta: 21.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:53:35,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.09 ms. Allocated memory is still 90.2 MB. Free memory was 55.8 MB in the beginning and 67.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:35,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.81 ms. Allocated memory is still 90.2 MB. Free memory was 67.5 MB in the beginning and 66.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:53:35,279 INFO L168 Benchmark]: Boogie Preprocessor took 17.69 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 65.4 MB in the end (delta: 947.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:35,279 INFO L168 Benchmark]: RCFGBuilder took 229.00 ms. Allocated memory is still 90.2 MB. Free memory was 65.4 MB in the beginning and 57.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:35,280 INFO L168 Benchmark]: TraceAbstraction took 1252.66 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 56.7 MB in the beginning and 81.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:35,289 INFO L168 Benchmark]: Witness Printer took 54.22 ms. Allocated memory is still 125.8 MB. Free memory was 81.0 MB in the beginning and 78.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:35,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 62.3 MB in the beginning and 62.3 MB in the end (delta: 21.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.09 ms. Allocated memory is still 90.2 MB. Free memory was 55.8 MB in the beginning and 67.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.81 ms. Allocated memory is still 90.2 MB. Free memory was 67.5 MB in the beginning and 66.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.69 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 65.4 MB in the end (delta: 947.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 229.00 ms. Allocated memory is still 90.2 MB. Free memory was 65.4 MB in the beginning and 57.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1252.66 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 56.7 MB in the beginning and 81.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Witness Printer took 54.22 ms. Allocated memory is still 125.8 MB. Free memory was 81.0 MB in the beginning and 78.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1179.1ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 11.3ms, AutomataDifference: 208.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 28.6ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19 SDtfs, 18 SDslu, 0 SDs, 0 SdLazy, 66 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 53.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 9 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 9.4ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 13.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 13.6ms SsaConstructionTime, 34.4ms SatisfiabilityAnalysisTime, 374.1ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 15 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 5/6 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: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && 0 <= x + 2147483648 RESULT: Ultimate proved your program to be correct! [2021-10-13 06:53:35,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80645bd0-bcf4-4f38-90eb-279530c66ba2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...