./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Copenhagen.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/Copenhagen.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 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:02:16,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:02:16,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:02:16,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:02:16,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:02:16,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:02:16,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:02:16,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:02:16,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:02:16,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:02:16,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:02:16,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:02:16,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:02:16,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:02:16,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:02:16,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:02:16,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:02:16,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:02:16,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:02:16,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:02:16,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:02:16,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:02:16,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:02:16,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:02:16,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:02:16,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:02:16,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:02:16,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:02:16,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:02:16,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:02:16,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:02:16,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:02:16,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:02:16,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:02:16,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:02:16,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:02:16,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:02:16,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:02:16,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:02:16,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:02:16,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:02:16,404 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-26 04:02:16,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:02:16,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:02:16,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:02:16,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:02:16,466 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:02:16,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:02:16,467 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:02:16,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:02:16,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:02:16,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:02:16,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:02:16,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:02:16,469 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:02:16,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:02:16,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:02:16,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:02:16,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:02:16,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:02:16,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:02:16,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:02:16,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:02:16,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:02:16,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:02:16,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:02:16,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:02:16,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:02:16,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:02:16,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:02:16,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e [2020-10-26 04:02:16,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:02:16,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:02:16,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:02:16,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:02:16,943 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:02:16,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Copenhagen.c [2020-10-26 04:02:17,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce943b3da/b74197a77b814df3995a87415bee723c/FLAG183df7dec [2020-10-26 04:02:17,665 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:02:17,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Copenhagen.c [2020-10-26 04:02:17,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce943b3da/b74197a77b814df3995a87415bee723c/FLAG183df7dec [2020-10-26 04:02:18,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce943b3da/b74197a77b814df3995a87415bee723c [2020-10-26 04:02:18,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:02:18,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:02:18,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:02:18,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:02:18,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:02:18,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cee492e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18, skipping insertion in model container [2020-10-26 04:02:18,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:02:18,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:02:18,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:02:18,340 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:02:18,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:02:18,376 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:02:18,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18 WrapperNode [2020-10-26 04:02:18,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:02:18,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:02:18,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:02:18,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:02:18,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:02:18,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:02:18,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:02:18,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:02:18,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (1/1) ... [2020-10-26 04:02:18,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:02:18,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:02:18,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:02:18,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:02:18,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (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 04:02:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:02:18,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:02:18,737 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:02:18,737 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:02:18,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:18 BoogieIcfgContainer [2020-10-26 04:02:18,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:02:18,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:02:18,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:02:18,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:02:18,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:02:18" (1/3) ... [2020-10-26 04:02:18,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c64a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:02:18, skipping insertion in model container [2020-10-26 04:02:18,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:18" (2/3) ... [2020-10-26 04:02:18,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c64a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:02:18, skipping insertion in model container [2020-10-26 04:02:18,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:18" (3/3) ... [2020-10-26 04:02:18,755 INFO L111 eAbstractionObserver]: Analyzing ICFG Copenhagen.c [2020-10-26 04:02:18,769 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:02:18,774 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-26 04:02:18,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 04:02:18,831 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:02:18,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:02:18,832 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:02:18,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:02:18,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:02:18,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:02:18,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:02:18,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:02:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-26 04:02:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-26 04:02:18,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:18,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-26 04:02:18,867 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:18,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:18,876 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-26 04:02:18,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:18,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296699014] [2020-10-26 04:02:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:19,157 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 04:02:19,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296699014] [2020-10-26 04:02:19,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:19,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 04:02:19,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027400998] [2020-10-26 04:02:19,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:02:19,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:19,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:02:19,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:02:19,214 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-10-26 04:02:19,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:19,370 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-10-26 04:02:19,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:02:19,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-26 04:02:19,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:19,382 INFO L225 Difference]: With dead ends: 30 [2020-10-26 04:02:19,382 INFO L226 Difference]: Without dead ends: 17 [2020-10-26 04:02:19,386 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 04:02:19,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-26 04:02:19,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2020-10-26 04:02:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 04:02:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-26 04:02:19,423 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2020-10-26 04:02:19,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:19,424 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-26 04:02:19,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:02:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-26 04:02:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-26 04:02:19,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:19,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-26 04:02:19,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:02:19,429 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:19,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:19,431 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-10-26 04:02:19,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:19,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316037097] [2020-10-26 04:02:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:19,459 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 04:02:19,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316037097] [2020-10-26 04:02:19,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:19,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:02:19,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875834208] [2020-10-26 04:02:19,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:02:19,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:19,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:02:19,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:02:19,464 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-10-26 04:02:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:19,486 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-10-26 04:02:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:02:19,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-26 04:02:19,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:19,487 INFO L225 Difference]: With dead ends: 12 [2020-10-26 04:02:19,488 INFO L226 Difference]: Without dead ends: 11 [2020-10-26 04:02:19,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:02:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-26 04:02:19,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-26 04:02:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-26 04:02:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-26 04:02:19,492 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2020-10-26 04:02:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:19,493 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-26 04:02:19,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:02:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-26 04:02:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-26 04:02:19,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:19,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-26 04:02:19,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 04:02:19,495 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:19,496 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-10-26 04:02:19,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:19,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120589962] [2020-10-26 04:02:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:19,538 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 04:02:19,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120589962] [2020-10-26 04:02:19,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:19,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:02:19,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112305944] [2020-10-26 04:02:19,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:02:19,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:19,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:02:19,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:02:19,542 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2020-10-26 04:02:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:19,586 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-10-26 04:02:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 04:02:19,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-26 04:02:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:19,588 INFO L225 Difference]: With dead ends: 16 [2020-10-26 04:02:19,588 INFO L226 Difference]: Without dead ends: 15 [2020-10-26 04:02:19,589 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 04:02:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-26 04:02:19,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-10-26 04:02:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-26 04:02:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-26 04:02:19,593 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2020-10-26 04:02:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:19,593 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-26 04:02:19,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:02:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-26 04:02:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 04:02:19,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:19,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:02:19,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 04:02:19,595 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:19,596 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-10-26 04:02:19,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:19,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886665098] [2020-10-26 04:02:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:19,622 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 04:02:19,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886665098] [2020-10-26 04:02:19,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:19,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:02:19,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611708430] [2020-10-26 04:02:19,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:02:19,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:19,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:02:19,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:02:19,625 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-10-26 04:02:19,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:19,646 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-10-26 04:02:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:02:19,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-26 04:02:19,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:19,648 INFO L225 Difference]: With dead ends: 13 [2020-10-26 04:02:19,648 INFO L226 Difference]: Without dead ends: 12 [2020-10-26 04:02:19,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:02:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-26 04:02:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-26 04:02:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 04:02:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-26 04:02:19,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2020-10-26 04:02:19,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:19,659 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-26 04:02:19,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:02:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-26 04:02:19,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 04:02:19,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:19,660 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-26 04:02:19,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 04:02:19,661 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:19,661 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2020-10-26 04:02:19,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:19,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292430556] [2020-10-26 04:02:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:19,695 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 04:02:19,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292430556] [2020-10-26 04:02:19,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:19,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:02:19,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445190605] [2020-10-26 04:02:19,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:02:19,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:19,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:02:19,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:02:19,698 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-10-26 04:02:19,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:19,725 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-10-26 04:02:19,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:02:19,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-26 04:02:19,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:19,727 INFO L225 Difference]: With dead ends: 12 [2020-10-26 04:02:19,727 INFO L226 Difference]: Without dead ends: 11 [2020-10-26 04:02:19,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 04:02:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-26 04:02:19,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-26 04:02:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-26 04:02:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-26 04:02:19,731 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-10-26 04:02:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:19,731 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-26 04:02:19,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:02:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-26 04:02:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 04:02:19,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:19,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-10-26 04:02:19,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 04:02:19,732 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:19,733 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2020-10-26 04:02:19,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:19,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790626729] [2020-10-26 04:02:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:19,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790626729] [2020-10-26 04:02:19,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491860706] [2020-10-26 04:02:19,805 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 04:02:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:19,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:02:19,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:02:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:19,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:02:19,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-26 04:02:19,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128922621] [2020-10-26 04:02:19,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:02:19,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:19,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:02:19,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:02:19,925 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 5 states. [2020-10-26 04:02:20,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:20,055 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-26 04:02:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 04:02:20,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-26 04:02:20,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:20,058 INFO L225 Difference]: With dead ends: 17 [2020-10-26 04:02:20,058 INFO L226 Difference]: Without dead ends: 16 [2020-10-26 04:02:20,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 04:02:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-26 04:02:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-26 04:02:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-26 04:02:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-26 04:02:20,068 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2020-10-26 04:02:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:20,069 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-26 04:02:20,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:02:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-26 04:02:20,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 04:02:20,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:20,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2020-10-26 04:02:20,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-26 04:02:20,282 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:20,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2020-10-26 04:02:20,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:20,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953286641] [2020-10-26 04:02:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:20,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953286641] [2020-10-26 04:02:20,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299541596] [2020-10-26 04:02:20,442 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 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 04:02:20,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 04:02:20,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 04:02:20,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 04:02:20,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:02:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:20,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:02:20,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-26 04:02:20,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035507553] [2020-10-26 04:02:20,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 04:02:20,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:20,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 04:02:20,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:02:20,508 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-10-26 04:02:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:20,720 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-26 04:02:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 04:02:20,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-26 04:02:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:20,722 INFO L225 Difference]: With dead ends: 18 [2020-10-26 04:02:20,722 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 04:02:20,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-26 04:02:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 04:02:20,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 04:02:20,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 04:02:20,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 04:02:20,724 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-26 04:02:20,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:20,724 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:02:20,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 04:02:20,725 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:02:20,725 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 04:02:20,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:02:20,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-26 04:02:21,020 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-26 04:02:21,020 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-26 04:02:21,021 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-26 04:02:21,021 INFO L277 CegarLoopResult]: At program point L21(lines 11 22) the Hoare annotation is: true [2020-10-26 04:02:21,022 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-26 04:02:21,022 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-26 04:02:21,022 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-26 04:02:21,022 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-26 04:02:21,022 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-26 04:02:21,023 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-26 04:02:21,023 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-26 04:02:21,023 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-26 04:02:21,023 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-10-26 04:02:21,024 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2020-10-26 04:02:21,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:02:21 BoogieIcfgContainer [2020-10-26 04:02:21,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:02:21,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:02:21,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:02:21,043 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:02:21,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:18" (3/4) ... [2020-10-26 04:02:21,047 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 04:02:21,059 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-26 04:02:21,059 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-26 04:02:21,102 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:02:21,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:02:21,105 INFO L168 Benchmark]: Toolchain (without parser) took 3045.18 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 19.5 MB in the beginning and 39.5 MB in the end (delta: -20.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:21,106 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 41.9 MB. Free memory was 22.4 MB in the beginning and 22.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:21,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.67 ms. Allocated memory is still 41.9 MB. Free memory was 18.9 MB in the beginning and 21.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:21,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 41.9 MB. Free memory was 21.9 MB in the beginning and 20.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:21,108 INFO L168 Benchmark]: Boogie Preprocessor took 20.79 ms. Allocated memory is still 41.9 MB. Free memory was 20.6 MB in the beginning and 19.7 MB in the end (delta: 901.2 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:21,109 INFO L168 Benchmark]: RCFGBuilder took 305.92 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.7 MB in the beginning and 29.1 MB in the end (delta: -9.4 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:21,110 INFO L168 Benchmark]: TraceAbstraction took 2297.07 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.8 MB in the beginning and 42.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:21,111 INFO L168 Benchmark]: Witness Printer took 60.73 ms. Allocated memory is still 60.8 MB. Free memory was 42.1 MB in the beginning and 39.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:21,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 41.9 MB. Free memory was 22.4 MB in the beginning and 22.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.67 ms. Allocated memory is still 41.9 MB. Free memory was 18.9 MB in the beginning and 21.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 41.9 MB. Free memory was 21.9 MB in the beginning and 20.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.79 ms. Allocated memory is still 41.9 MB. Free memory was 20.6 MB in the beginning and 19.7 MB in the end (delta: 901.2 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 305.92 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.7 MB in the beginning and 29.1 MB in the end (delta: -9.4 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2297.07 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.8 MB in the beginning and 42.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.73 ms. Allocated memory is still 60.8 MB. Free memory was 42.1 MB in the beginning and 39.5 MB in the end (delta: 2.5 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: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 46 SDslu, 15 SDs, 0 SdLazy, 113 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=6, 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, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 1899 SizeOfPredicates, 6 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 10/36 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...