./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:31:00,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:31:00,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:31:00,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:31:00,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:31:00,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:31:00,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:31:00,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:31:00,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:31:00,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:31:00,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:31:00,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:31:00,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:31:00,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:31:00,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:31:00,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:31:00,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:31:00,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:31:00,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:31:00,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:31:00,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:31:00,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:31:00,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:31:00,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:31:00,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:31:00,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:31:00,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:31:00,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:31:00,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:31:00,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:31:00,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:31:00,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:31:00,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:31:00,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:31:00,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:31:00,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:31:00,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:31:00,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:31:00,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:31:00,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:31:00,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:31:00,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:31:00,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:31:00,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:31:00,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:31:00,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:31:00,362 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:31:00,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:31:00,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:31:00,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:31:00,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:31:00,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:31:00,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:31:00,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:31:00,364 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:31:00,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:31:00,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:31:00,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:31:00,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:31:00,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:31:00,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:31:00,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:31:00,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:31:00,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:31:00,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:31:00,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:31:00,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:31:00,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:31:00,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:31:00,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:31:00,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2020-10-19 18:31:00,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:31:00,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:31:00,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:31:00,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:31:00,687 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:31:00,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2020-10-19 18:31:00,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed059106/8a939d9cc74e473a9b7c84b1e3d30e1c/FLAG6e11eaab9 [2020-10-19 18:31:01,164 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:31:01,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2020-10-19 18:31:01,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed059106/8a939d9cc74e473a9b7c84b1e3d30e1c/FLAG6e11eaab9 [2020-10-19 18:31:01,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed059106/8a939d9cc74e473a9b7c84b1e3d30e1c [2020-10-19 18:31:01,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:31:01,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:31:01,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:31:01,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:31:01,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:31:01,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ec8743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01, skipping insertion in model container [2020-10-19 18:31:01,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:31:01,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:31:01,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:31:01,790 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:31:01,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:31:01,816 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:31:01,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01 WrapperNode [2020-10-19 18:31:01,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:31:01,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:31:01,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:31:01,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:31:01,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:31:01,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:31:01,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:31:01,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:31:01,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (1/1) ... [2020-10-19 18:31:01,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:31:01,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:31:01,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:31:01,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:31:01,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:31:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:31:01,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:31:02,177 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:31:02,178 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:31:02,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:31:02 BoogieIcfgContainer [2020-10-19 18:31:02,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:31:02,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:31:02,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:31:02,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:31:02,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:31:01" (1/3) ... [2020-10-19 18:31:02,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fc16ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:31:02, skipping insertion in model container [2020-10-19 18:31:02,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:31:01" (2/3) ... [2020-10-19 18:31:02,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fc16ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:31:02, skipping insertion in model container [2020-10-19 18:31:02,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:31:02" (3/3) ... [2020-10-19 18:31:02,201 INFO L111 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1.c [2020-10-19 18:31:02,231 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:31:02,240 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-19 18:31:02,266 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-19 18:31:02,295 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:31:02,295 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:31:02,296 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:31:02,296 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:31:02,296 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:31:02,297 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:31:02,297 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:31:02,297 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:31:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-19 18:31:02,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-19 18:31:02,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:31:02,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-19 18:31:02,319 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:31:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:31:02,325 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2020-10-19 18:31:02,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:31:02,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580004285] [2020-10-19 18:31:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:31:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:02,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580004285] [2020-10-19 18:31:02,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:31:02,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:31:02,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022625216] [2020-10-19 18:31:02,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:31:02,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:31:02,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:31:02,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:31:02,520 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-10-19 18:31:02,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:31:02,637 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-10-19 18:31:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:31:02,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-19 18:31:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:31:02,651 INFO L225 Difference]: With dead ends: 42 [2020-10-19 18:31:02,651 INFO L226 Difference]: Without dead ends: 24 [2020-10-19 18:31:02,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:31:02,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-19 18:31:02,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2020-10-19 18:31:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-19 18:31:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-19 18:31:02,694 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2020-10-19 18:31:02,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:31:02,695 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-19 18:31:02,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:31:02,695 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-19 18:31:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-19 18:31:02,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:31:02,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-19 18:31:02,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:31:02,696 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:31:02,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:31:02,697 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-10-19 18:31:02,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:31:02,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854909594] [2020-10-19 18:31:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:31:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:02,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854909594] [2020-10-19 18:31:02,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:31:02,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:31:02,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942899585] [2020-10-19 18:31:02,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:31:02,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:31:02,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:31:02,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:31:02,736 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-10-19 18:31:02,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:31:02,802 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-10-19 18:31:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:31:02,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-19 18:31:02,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:31:02,804 INFO L225 Difference]: With dead ends: 25 [2020-10-19 18:31:02,804 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 18:31:02,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:31:02,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 18:31:02,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2020-10-19 18:31:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-19 18:31:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-19 18:31:02,809 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2020-10-19 18:31:02,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:31:02,810 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-19 18:31:02,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:31:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-19 18:31:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:31:02,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:31:02,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-19 18:31:02,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:31:02,812 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:31:02,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:31:02,812 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2020-10-19 18:31:02,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:31:02,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692245799] [2020-10-19 18:31:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:31:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:02,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692245799] [2020-10-19 18:31:02,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346549480] [2020-10-19 18:31:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-19 18:31:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:31:02,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:31:02,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:31:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:02,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:31:02,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-19 18:31:02,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402947428] [2020-10-19 18:31:02,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:31:02,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:31:02,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:31:02,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:31:02,976 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2020-10-19 18:31:03,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:31:03,047 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-19 18:31:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:31:03,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-19 18:31:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:31:03,048 INFO L225 Difference]: With dead ends: 32 [2020-10-19 18:31:03,049 INFO L226 Difference]: Without dead ends: 31 [2020-10-19 18:31:03,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:31:03,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-19 18:31:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2020-10-19 18:31:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-19 18:31:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-10-19 18:31:03,055 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2020-10-19 18:31:03,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:31:03,055 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-10-19 18:31:03,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:31:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2020-10-19 18:31:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:31:03,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:31:03,057 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:31:03,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-19 18:31:03,268 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:31:03,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:31:03,269 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2020-10-19 18:31:03,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:31:03,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254414580] [2020-10-19 18:31:03,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:31:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:03,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254414580] [2020-10-19 18:31:03,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232804199] [2020-10-19 18:31:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-19 18:31:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:03,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:31:03,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:31:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:03,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:31:03,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-19 18:31:03,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840007187] [2020-10-19 18:31:03,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:31:03,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:31:03,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:31:03,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:31:03,415 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 8 states. [2020-10-19 18:31:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:31:03,631 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-10-19 18:31:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:31:03,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-19 18:31:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:31:03,633 INFO L225 Difference]: With dead ends: 48 [2020-10-19 18:31:03,633 INFO L226 Difference]: Without dead ends: 47 [2020-10-19 18:31:03,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:31:03,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-19 18:31:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2020-10-19 18:31:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 18:31:03,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2020-10-19 18:31:03,648 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 9 [2020-10-19 18:31:03,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:31:03,648 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2020-10-19 18:31:03,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:31:03,648 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2020-10-19 18:31:03,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:31:03,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:31:03,651 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:31:03,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:31:03,854 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:31:03,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:31:03,855 INFO L82 PathProgramCache]: Analyzing trace with hash -22254561, now seen corresponding path program 1 times [2020-10-19 18:31:03,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:31:03,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62269131] [2020-10-19 18:31:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:31:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:03,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62269131] [2020-10-19 18:31:03,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677209255] [2020-10-19 18:31:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:31:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:03,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:31:03,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:31:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:03,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:31:03,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-19 18:31:03,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465377831] [2020-10-19 18:31:03,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:31:03,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:31:03,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:31:03,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:31:03,974 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 5 states. [2020-10-19 18:31:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:31:04,011 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2020-10-19 18:31:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:31:04,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-19 18:31:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:31:04,013 INFO L225 Difference]: With dead ends: 31 [2020-10-19 18:31:04,013 INFO L226 Difference]: Without dead ends: 30 [2020-10-19 18:31:04,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:31:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-19 18:31:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2020-10-19 18:31:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 18:31:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-10-19 18:31:04,020 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 9 [2020-10-19 18:31:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:31:04,021 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-10-19 18:31:04,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:31:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-10-19 18:31:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:31:04,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:31:04,022 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-19 18:31:04,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:31:04,236 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:31:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:31:04,236 INFO L82 PathProgramCache]: Analyzing trace with hash -22254369, now seen corresponding path program 1 times [2020-10-19 18:31:04,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:31:04,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525088064] [2020-10-19 18:31:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:31:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:04,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525088064] [2020-10-19 18:31:04,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155224952] [2020-10-19 18:31:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:31:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:04,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:31:04,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:31:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:04,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:31:04,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-19 18:31:04,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812571185] [2020-10-19 18:31:04,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:31:04,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:31:04,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:31:04,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:31:04,339 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 5 states. [2020-10-19 18:31:04,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:31:04,399 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2020-10-19 18:31:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:31:04,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-19 18:31:04,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:31:04,400 INFO L225 Difference]: With dead ends: 43 [2020-10-19 18:31:04,400 INFO L226 Difference]: Without dead ends: 42 [2020-10-19 18:31:04,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:31:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-19 18:31:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 20. [2020-10-19 18:31:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 18:31:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-10-19 18:31:04,406 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2020-10-19 18:31:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:31:04,406 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-10-19 18:31:04,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:31:04,406 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-10-19 18:31:04,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:31:04,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:31:04,407 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-19 18:31:04,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:31:04,619 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:31:04,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:31:04,620 INFO L82 PathProgramCache]: Analyzing trace with hash -573512235, now seen corresponding path program 1 times [2020-10-19 18:31:04,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:31:04,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891817040] [2020-10-19 18:31:04,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:31:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:04,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891817040] [2020-10-19 18:31:04,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777209130] [2020-10-19 18:31:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:31:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:31:04,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:31:04,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:31:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:31:04,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:31:04,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-10-19 18:31:04,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998167627] [2020-10-19 18:31:04,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:31:04,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:31:04,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:31:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:31:04,824 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 10 states. [2020-10-19 18:31:05,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:31:05,142 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-10-19 18:31:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:31:05,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-19 18:31:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:31:05,144 INFO L225 Difference]: With dead ends: 35 [2020-10-19 18:31:05,144 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:31:05,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:31:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:31:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:31:05,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:31:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:31:05,146 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-19 18:31:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:31:05,147 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:31:05,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:31:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:31:05,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:31:05,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-19 18:31:05,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 18:31:05,496 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-10-19 18:31:05,497 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 18:31:05,497 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-10-19 18:31:05,497 INFO L270 CegarLoopResult]: At program point L27(lines 14 28) the Hoare annotation is: (or (<= ULTIMATE.start_main_~y1~0 (+ ULTIMATE.start_main_~y2~0 2147483646)) (<= ULTIMATE.start_main_~y1~0 2147483647)) [2020-10-19 18:31:05,497 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-19 18:31:05,497 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-19 18:31:05,498 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-19 18:31:05,498 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-10-19 18:31:05,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-10-19 18:31:05,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-10-19 18:31:05,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 18:31:05,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 18:31:05,499 INFO L274 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-10-19 18:31:05,499 INFO L274 CegarLoopResult]: For program point L18(lines 18 26) no Hoare annotation was computed. [2020-10-19 18:31:05,499 INFO L270 CegarLoopResult]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~y1~0 2147483647))) (or (and (< 0 ULTIMATE.start_main_~y1~0) (<= ULTIMATE.start_main_~y2~0 2147483647) .cse0 (< 0 ULTIMATE.start_main_~y2~0)) (and (<= 0 ULTIMATE.start_main_~y2~0) (<= ULTIMATE.start_main_~y2~0 2147483646) .cse0 (<= 1 ULTIMATE.start_main_~y1~0)))) [2020-10-19 18:31:05,499 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 26) no Hoare annotation was computed. [2020-10-19 18:31:05,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:31:05 BoogieIcfgContainer [2020-10-19 18:31:05,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:31:05,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:31:05,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:31:05,516 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:31:05,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:31:02" (3/4) ... [2020-10-19 18:31:05,520 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:31:05,531 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-19 18:31:05,531 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:31:05,575 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:31:05,575 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:31:05,578 INFO L168 Benchmark]: Toolchain (without parser) took 4006.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 960.0 MB in the beginning and 873.3 MB in the end (delta: 86.6 MB). Peak memory consumption was 218.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:31:05,578 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:31:05,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.45 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:31:05,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -178.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:31:05,581 INFO L168 Benchmark]: Boogie Preprocessor took 19.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:31:05,581 INFO L168 Benchmark]: RCFGBuilder took 256.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:31:05,582 INFO L168 Benchmark]: TraceAbstraction took 3334.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 873.3 MB in the end (delta: 234.4 MB). Peak memory consumption was 234.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:31:05,582 INFO L168 Benchmark]: Witness Printer took 59.62 ms. Allocated memory is still 1.2 GB. Free memory is still 873.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:31:05,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 239.45 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -178.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 256.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3334.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 873.3 MB in the end (delta: 234.4 MB). Peak memory consumption was 234.4 MB. Max. memory is 11.5 GB. * Witness Printer took 59.62 ms. Allocated memory is still 1.2 GB. Free memory is still 873.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: y1 <= y2 + 2147483646 || y1 <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((0 < y1 && y2 <= 2147483647) && y1 <= 2147483647) && 0 < y2) || (((0 <= y2 && y2 <= 2147483646) && y1 <= 2147483647) && 1 <= y1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 161 SDslu, 6 SDs, 0 SdLazy, 366 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, 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, 7 MinimizatonAttempts, 79 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 36 HoareAnnotationTreeSize, 2 FomulaSimplifications, 355 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 71 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 6192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 13/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...