./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/HeizmannHoenickeLeikePodelski-ATVA2013-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 0564e568992a96ba006237c1af458e049de52506 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:05:41,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:05:41,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:05:41,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:05:41,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:05:41,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:05:41,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:05:41,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:05:41,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:05:41,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:05:41,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:05:41,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:05:41,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:05:41,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:05:41,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:05:41,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:05:41,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:05:41,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:05:41,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:05:41,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:05:41,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:05:41,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:05:41,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:05:41,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:05:41,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:05:41,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:05:41,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:05:41,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:05:41,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:05:41,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:05:41,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:05:41,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:05:41,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:05:41,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:05:41,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:05:41,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:05:41,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:05:41,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:05:41,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:05:41,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:05:41,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:05:41,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-26 04:05:41,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:05:41,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:05:41,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:05:41,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:05:41,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:05:41,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:05:41,640 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:05:41,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:05:41,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:05:41,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:05:41,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:05:41,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:05:41,642 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:05:41,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:05:41,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:05:41,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:05:41,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:05:41,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:05:41,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:05:41,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:05:41,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:05:41,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:05:41,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:05:41,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:05:41,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:05:41,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:05:41,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:05:41,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:05:41,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0564e568992a96ba006237c1af458e049de52506 [2020-10-26 04:05:42,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:05:42,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:05:42,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:05:42,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:05:42,118 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:05:42,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2020-10-26 04:05:42,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d78257e9a/87e796b500b5413680675bfff3eb155d/FLAGe86380055 [2020-10-26 04:05:42,730 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:05:42,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2020-10-26 04:05:42,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d78257e9a/87e796b500b5413680675bfff3eb155d/FLAGe86380055 [2020-10-26 04:05:43,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d78257e9a/87e796b500b5413680675bfff3eb155d [2020-10-26 04:05:43,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:05:43,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:05:43,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:05:43,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:05:43,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:05:43,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769e11ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43, skipping insertion in model container [2020-10-26 04:05:43,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:05:43,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:05:43,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:05:43,397 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:05:43,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:05:43,431 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:05:43,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43 WrapperNode [2020-10-26 04:05:43,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:05:43,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:05:43,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:05:43,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:05:43,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:05:43,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:05:43,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:05:43,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:05:43,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (1/1) ... [2020-10-26 04:05:43,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:05:43,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:05:43,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:05:43,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:05:43,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (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 [2020-10-26 04:05:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:05:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:05:43,765 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:05:43,766 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:05:43,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:05:43 BoogieIcfgContainer [2020-10-26 04:05:43,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:05:43,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:05:43,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:05:43,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:05:43,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:05:43" (1/3) ... [2020-10-26 04:05:43,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1317579a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:05:43, skipping insertion in model container [2020-10-26 04:05:43,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:05:43" (2/3) ... [2020-10-26 04:05:43,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1317579a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:05:43, skipping insertion in model container [2020-10-26 04:05:43,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:05:43" (3/3) ... [2020-10-26 04:05:43,779 INFO L111 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2020-10-26 04:05:43,794 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:05:43,800 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-26 04:05:43,816 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 04:05:43,850 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:05:43,850 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:05:43,851 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:05:43,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:05:43,852 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:05:43,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:05:43,853 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:05:43,853 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:05:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-26 04:05:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-26 04:05:43,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:43,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-26 04:05:43,887 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:43,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:43,897 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-26 04:05:43,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:43,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679542471] [2020-10-26 04:05:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:44,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679542471] [2020-10-26 04:05:44,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:05:44,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 04:05:44,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779116976] [2020-10-26 04:05:44,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:05:44,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:05:44,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:05:44,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:05:44,210 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-10-26 04:05:44,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:05:44,347 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-10-26 04:05:44,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:05:44,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-26 04:05:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:05:44,359 INFO L225 Difference]: With dead ends: 26 [2020-10-26 04:05:44,359 INFO L226 Difference]: Without dead ends: 13 [2020-10-26 04:05:44,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:05:44,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-26 04:05:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-10-26 04:05:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 04:05:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-26 04:05:44,402 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2020-10-26 04:05:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:05:44,403 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-26 04:05:44,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:05:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-26 04:05:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-26 04:05:44,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:44,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-26 04:05:44,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:05:44,405 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:44,406 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-10-26 04:05:44,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:44,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290835855] [2020-10-26 04:05:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:44,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290835855] [2020-10-26 04:05:44,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:05:44,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:05:44,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480911259] [2020-10-26 04:05:44,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:05:44,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:05:44,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:05:44,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:05:44,459 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-10-26 04:05:44,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:05:44,557 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-10-26 04:05:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 04:05:44,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-10-26 04:05:44,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:05:44,559 INFO L225 Difference]: With dead ends: 17 [2020-10-26 04:05:44,559 INFO L226 Difference]: Without dead ends: 15 [2020-10-26 04:05:44,560 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 [2020-10-26 04:05:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-26 04:05:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-10-26 04:05:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-26 04:05:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-26 04:05:44,565 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2020-10-26 04:05:44,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:05:44,566 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-26 04:05:44,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:05:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-26 04:05:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 04:05:44,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:44,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:05:44,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 04:05:44,568 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:44,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:44,569 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-10-26 04:05:44,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:44,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641714088] [2020-10-26 04:05:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:44,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641714088] [2020-10-26 04:05:44,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:05:44,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 04:05:44,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332350756] [2020-10-26 04:05:44,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:05:44,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:05:44,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:05:44,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:05:44,599 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2020-10-26 04:05:44,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:05:44,616 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-26 04:05:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:05:44,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-26 04:05:44,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:05:44,618 INFO L225 Difference]: With dead ends: 14 [2020-10-26 04:05:44,618 INFO L226 Difference]: Without dead ends: 13 [2020-10-26 04:05:44,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:05:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-26 04:05:44,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-26 04:05:44,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-26 04:05:44,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-26 04:05:44,623 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2020-10-26 04:05:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:05:44,624 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-26 04:05:44,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:05:44,624 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-26 04:05:44,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 04:05:44,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:44,625 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-26 04:05:44,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 04:05:44,626 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:44,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:44,626 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2020-10-26 04:05:44,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:44,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073315208] [2020-10-26 04:05:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:44,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073315208] [2020-10-26 04:05:44,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012123244] [2020-10-26 04:05:44,682 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:44,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 04:05:44,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:05:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:44,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 04:05:44,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2020-10-26 04:05:44,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731156735] [2020-10-26 04:05:44,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:05:44,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:05:44,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:05:44,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 04:05:44,841 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-10-26 04:05:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:05:44,899 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-26 04:05:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:05:44,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-26 04:05:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:05:44,901 INFO L225 Difference]: With dead ends: 14 [2020-10-26 04:05:44,901 INFO L226 Difference]: Without dead ends: 13 [2020-10-26 04:05:44,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-26 04:05:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-26 04:05:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-10-26 04:05:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 04:05:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-26 04:05:44,905 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2020-10-26 04:05:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:05:44,906 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-26 04:05:44,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:05:44,906 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-26 04:05:44,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 04:05:44,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:44,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-26 04:05:45,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:45,117 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:45,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:45,118 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2020-10-26 04:05:45,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:45,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134804120] [2020-10-26 04:05:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:45,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134804120] [2020-10-26 04:05:45,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022901615] [2020-10-26 04:05:45,183 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:45,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:05:45,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:05:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:45,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:05:45,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-10-26 04:05:45,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842459742] [2020-10-26 04:05:45,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 04:05:45,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:05:45,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 04:05:45,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:05:45,248 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2020-10-26 04:05:45,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:05:45,308 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-26 04:05:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:05:45,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-26 04:05:45,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:05:45,309 INFO L225 Difference]: With dead ends: 20 [2020-10-26 04:05:45,309 INFO L226 Difference]: Without dead ends: 18 [2020-10-26 04:05:45,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:05:45,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-26 04:05:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-26 04:05:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-26 04:05:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-26 04:05:45,315 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2020-10-26 04:05:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:05:45,315 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-26 04:05:45,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 04:05:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-26 04:05:45,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 04:05:45,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:45,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1] [2020-10-26 04:05:45,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:45,518 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:45,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:45,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1635256875, now seen corresponding path program 2 times [2020-10-26 04:05:45,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:45,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210828056] [2020-10-26 04:05:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:45,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210828056] [2020-10-26 04:05:45,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004586805] [2020-10-26 04:05:45,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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) [2020-10-26 04:05:45,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 04:05:45,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:45,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:05:45,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:05:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:45,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:05:45,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-26 04:05:45,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722286550] [2020-10-26 04:05:45,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 04:05:45,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:05:45,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 04:05:45,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:05:45,644 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 7 states. [2020-10-26 04:05:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:05:45,729 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-26 04:05:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 04:05:45,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-26 04:05:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:05:45,730 INFO L225 Difference]: With dead ends: 25 [2020-10-26 04:05:45,731 INFO L226 Difference]: Without dead ends: 23 [2020-10-26 04:05:45,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-26 04:05:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-26 04:05:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-26 04:05:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-26 04:05:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-26 04:05:45,736 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 14 [2020-10-26 04:05:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:05:45,737 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-26 04:05:45,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 04:05:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-26 04:05:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 04:05:45,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:45,738 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1] [2020-10-26 04:05:45,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:45,950 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:45,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:45,951 INFO L82 PathProgramCache]: Analyzing trace with hash 637353757, now seen corresponding path program 3 times [2020-10-26 04:05:45,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:45,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900605709] [2020-10-26 04:05:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:46,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900605709] [2020-10-26 04:05:46,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738876190] [2020-10-26 04:05:46,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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) [2020-10-26 04:05:46,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-26 04:05:46,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 04:05:46,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:05:46,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-26 04:05:46,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 04:05:46,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2020-10-26 04:05:46,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114715373] [2020-10-26 04:05:46,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:05:46,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:05:46,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:05:46,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-26 04:05:46,108 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 5 states. [2020-10-26 04:05:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:05:46,147 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-26 04:05:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:05:46,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-26 04:05:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:05:46,148 INFO L225 Difference]: With dead ends: 22 [2020-10-26 04:05:46,148 INFO L226 Difference]: Without dead ends: 21 [2020-10-26 04:05:46,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 04:05:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-26 04:05:46,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-26 04:05:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-26 04:05:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-26 04:05:46,154 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2020-10-26 04:05:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:05:46,154 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-26 04:05:46,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:05:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-26 04:05:46,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 04:05:46,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:46,155 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2020-10-26 04:05:46,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:46,366 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:46,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:46,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 1 times [2020-10-26 04:05:46,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:46,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964760604] [2020-10-26 04:05:46,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:46,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964760604] [2020-10-26 04:05:46,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036355652] [2020-10-26 04:05:46,465 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) [2020-10-26 04:05:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:46,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:05:46,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:46,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:05:46,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-26 04:05:46,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446571406] [2020-10-26 04:05:46,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 04:05:46,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:05:46,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 04:05:46,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:05:46,530 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2020-10-26 04:05:46,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:05:46,575 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-26 04:05:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:05:46,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-26 04:05:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:05:46,577 INFO L225 Difference]: With dead ends: 28 [2020-10-26 04:05:46,577 INFO L226 Difference]: Without dead ends: 27 [2020-10-26 04:05:46,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:05:46,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-26 04:05:46,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-26 04:05:46,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-26 04:05:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-10-26 04:05:46,583 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2020-10-26 04:05:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:05:46,584 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-10-26 04:05:46,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 04:05:46,584 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-10-26 04:05:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 04:05:46,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:46,585 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-10-26 04:05:46,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:46,798 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:46,799 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2020-10-26 04:05:46,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:46,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565864717] [2020-10-26 04:05:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:46,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565864717] [2020-10-26 04:05:46,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795181230] [2020-10-26 04:05:46,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-26 04:05:46,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 04:05:46,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 04:05:46,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 04:05:46,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:46,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:05:46,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-26 04:05:46,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248397377] [2020-10-26 04:05:46,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 04:05:46,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:05:46,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 04:05:46,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:05:46,985 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 7 states. [2020-10-26 04:05:47,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:05:47,041 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-26 04:05:47,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 04:05:47,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-26 04:05:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:05:47,045 INFO L225 Difference]: With dead ends: 33 [2020-10-26 04:05:47,045 INFO L226 Difference]: Without dead ends: 32 [2020-10-26 04:05:47,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:05:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-26 04:05:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-26 04:05:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-26 04:05:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-26 04:05:47,054 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-10-26 04:05:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:05:47,054 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-26 04:05:47,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 04:05:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-26 04:05:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 04:05:47,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:05:47,056 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2020-10-26 04:05:47,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:47,269 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:05:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:05:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 3 times [2020-10-26 04:05:47,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:05:47,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433331393] [2020-10-26 04:05:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:05:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:05:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:05:47,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433331393] [2020-10-26 04:05:47,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705477145] [2020-10-26 04:05:47,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:05:47,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-26 04:05:47,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 04:05:47,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:05:47,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:05:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 04:05:47,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:05:47,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2020-10-26 04:05:47,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471429253] [2020-10-26 04:05:47,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 04:05:47,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:05:47,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 04:05:47,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-26 04:05:47,629 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 15 states. [2020-10-26 04:05:48,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:05:48,444 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-10-26 04:05:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 04:05:48,444 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2020-10-26 04:05:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:05:48,445 INFO L225 Difference]: With dead ends: 38 [2020-10-26 04:05:48,445 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 04:05:48,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=336, Invalid=924, Unknown=0, NotChecked=0, Total=1260 [2020-10-26 04:05:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 04:05:48,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 04:05:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 04:05:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 04:05:48,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-10-26 04:05:48,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:05:48,448 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:05:48,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 04:05:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:05:48,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 04:05:48,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-26 04:05:48,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-26 04:05:48,784 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2020-10-26 04:05:48,789 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-26 04:05:48,789 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-26 04:05:48,789 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-26 04:05:48,789 INFO L277 CegarLoopResult]: At program point L21(lines 13 22) the Hoare annotation is: true [2020-10-26 04:05:48,789 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-26 04:05:48,789 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-26 04:05:48,790 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse0 (<= 24 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~y~0 24) (<= ULTIMATE.start_main_~x~0 2147483624) .cse0) (and (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483648) 2) 1)) (<= ULTIMATE.start_main_~y~0 2147483647) .cse0) (and (<= 23 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 2147483624)) (<= ULTIMATE.start_main_~y~0 23)))) [2020-10-26 04:05:48,790 INFO L274 CegarLoopResult]: For program point L17-3(lines 17 20) no Hoare annotation was computed. [2020-10-26 04:05:48,790 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-26 04:05:48,790 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-26 04:05:48,790 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-26 04:05:48,790 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-26 04:05:48,790 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-26 04:05:48,790 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-26 04:05:48,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:05:48 BoogieIcfgContainer [2020-10-26 04:05:48,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:05:48,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:05:48,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:05:48,808 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:05:48,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:05:43" (3/4) ... [2020-10-26 04:05:48,813 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 04:05:48,824 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-26 04:05:48,824 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-26 04:05:48,863 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:05:48,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:05:48,865 INFO L168 Benchmark]: Toolchain (without parser) took 5763.12 ms. Allocated memory was 44.0 MB in the beginning and 69.2 MB in the end (delta: 25.2 MB). Free memory was 21.3 MB in the beginning and 40.1 MB in the end (delta: -18.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:05:48,865 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 44.0 MB. Free memory is still 28.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:05:48,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.33 ms. Allocated memory is still 44.0 MB. Free memory was 20.7 MB in the beginning and 23.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:05:48,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.01 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 22.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:05:48,867 INFO L168 Benchmark]: Boogie Preprocessor took 21.95 ms. Allocated memory is still 44.0 MB. Free memory was 22.4 MB in the beginning and 21.6 MB in the end (delta: 797.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:05:48,868 INFO L168 Benchmark]: RCFGBuilder took 275.59 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 21.5 MB in the beginning and 35.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:05:48,869 INFO L168 Benchmark]: TraceAbstraction took 5037.17 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.7 MB in the beginning and 42.9 MB in the end (delta: -8.1 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:05:48,869 INFO L168 Benchmark]: Witness Printer took 55.13 ms. Allocated memory is still 69.2 MB. Free memory was 42.2 MB in the beginning and 40.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:05:48,873 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 44.0 MB. Free memory is still 28.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.33 ms. Allocated memory is still 44.0 MB. Free memory was 20.7 MB in the beginning and 23.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.01 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 22.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.95 ms. Allocated memory is still 44.0 MB. Free memory was 22.4 MB in the beginning and 21.6 MB in the end (delta: 797.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 275.59 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 21.5 MB in the beginning and 35.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5037.17 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.7 MB in the beginning and 42.9 MB in the end (delta: -8.1 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * Witness Printer took 55.13 ms. Allocated memory is still 69.2 MB. Free memory was 42.2 MB in the beginning and 40.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 19]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((y <= 24 && x <= 2147483624) && 24 <= y) || ((y <= (x * -1 + 2147483648) / 2 + 1 && y <= 2147483647) && 24 <= y)) || ((23 <= y && x <= y + 2147483624) && y <= 23) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 92 SDslu, 19 SDs, 0 SdLazy, 284 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, 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, 10 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 42 HoareAnnotationTreeSize, 2 FomulaSimplifications, 150 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 263 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 14882 SizeOfPredicates, 2 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 75/366 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...