./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.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 b51d3ff9a76866bd9c6637bca261a8433dd4524e .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:30:05,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:30:05,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:30:05,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:30:05,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:30:05,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:30:05,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:30:05,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:30:05,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:30:05,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:30:05,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:30:05,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:30:05,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:30:05,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:30:05,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:30:05,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:30:05,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:30:05,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:30:05,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:30:05,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:30:05,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:30:05,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:30:05,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:30:05,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:30:05,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:30:05,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:30:05,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:30:05,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:30:05,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:30:05,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:30:05,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:30:05,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:30:05,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:30:05,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:30:05,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:30:05,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:30:05,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:30:05,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:30:05,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:30:05,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:30:05,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:30:05,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:30:05,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:30:05,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:30:05,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:30:05,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:30:05,388 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:30:05,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:30:05,389 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:30:05,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:30:05,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:30:05,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:30:05,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:30:05,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:30:05,391 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:30:05,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:30:05,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:30:05,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:30:05,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:30:05,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:30:05,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:30:05,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:30:05,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:30:05,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:30:05,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:30:05,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:30:05,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:30:05,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:30:05,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:30:05,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:30:05,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51d3ff9a76866bd9c6637bca261a8433dd4524e [2020-10-19 18:30:05,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:30:05,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:30:05,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:30:05,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:30:05,754 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:30:05,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2020-10-19 18:30:05,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6446c3fde/29f4dc50835042c491885d3f2d63b405/FLAGb5dde8c6e [2020-10-19 18:30:06,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:30:06,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2020-10-19 18:30:06,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6446c3fde/29f4dc50835042c491885d3f2d63b405/FLAGb5dde8c6e [2020-10-19 18:30:06,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6446c3fde/29f4dc50835042c491885d3f2d63b405 [2020-10-19 18:30:06,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:30:06,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:30:06,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:30:06,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:30:06,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:30:06,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:06,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a506185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06, skipping insertion in model container [2020-10-19 18:30:06,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:06,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:30:06,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:30:06,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:30:06,929 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:30:06,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:30:06,960 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:30:06,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06 WrapperNode [2020-10-19 18:30:06,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:30:06,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:30:06,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:30:06,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:30:06,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:06,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:06,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:30:06,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:30:06,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:30:06,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:30:07,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:07,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:07,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:07,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:07,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:07,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:07,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (1/1) ... [2020-10-19 18:30:07,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:30:07,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:30:07,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:30:07,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:30:07,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:30:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:30:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:30:07,375 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:30:07,377 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-19 18:30:07,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:30:07 BoogieIcfgContainer [2020-10-19 18:30:07,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:30:07,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:30:07,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:30:07,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:30:07,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:30:06" (1/3) ... [2020-10-19 18:30:07,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481ac202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:30:07, skipping insertion in model container [2020-10-19 18:30:07,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:06" (2/3) ... [2020-10-19 18:30:07,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481ac202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:30:07, skipping insertion in model container [2020-10-19 18:30:07,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:30:07" (3/3) ... [2020-10-19 18:30:07,405 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2020-10-19 18:30:07,418 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:30:07,431 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-19 18:30:07,456 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-19 18:30:07,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:30:07,478 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:30:07,478 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:30:07,479 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:30:07,479 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:30:07,479 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:30:07,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:30:07,479 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:30:07,495 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-19 18:30:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:30:07,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:07,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:30:07,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:07,509 INFO L82 PathProgramCache]: Analyzing trace with hash 963948, now seen corresponding path program 1 times [2020-10-19 18:30:07,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:07,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670810311] [2020-10-19 18:30:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:30:07,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670810311] [2020-10-19 18:30:07,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:07,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:30:07,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378079024] [2020-10-19 18:30:07,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 18:30:07,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:07,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 18:30:07,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 18:30:07,659 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-10-19 18:30:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:07,678 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2020-10-19 18:30:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 18:30:07,680 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-19 18:30:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:07,689 INFO L225 Difference]: With dead ends: 47 [2020-10-19 18:30:07,689 INFO L226 Difference]: Without dead ends: 20 [2020-10-19 18:30:07,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 18:30:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-19 18:30:07,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-19 18:30:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 18:30:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-10-19 18:30:07,730 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 4 [2020-10-19 18:30:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:07,730 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-10-19 18:30:07,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 18:30:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-10-19 18:30:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 18:30:07,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:07,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 18:30:07,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:30:07,733 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:07,734 INFO L82 PathProgramCache]: Analyzing trace with hash 925832983, now seen corresponding path program 1 times [2020-10-19 18:30:07,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:07,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557430930] [2020-10-19 18:30:07,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:30:07,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557430930] [2020-10-19 18:30:07,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:07,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 18:30:07,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215101659] [2020-10-19 18:30:07,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:30:07,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:07,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:30:07,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:30:07,790 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2020-10-19 18:30:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:07,810 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-10-19 18:30:07,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:30:07,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-19 18:30:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:07,812 INFO L225 Difference]: With dead ends: 20 [2020-10-19 18:30:07,812 INFO L226 Difference]: Without dead ends: 19 [2020-10-19 18:30:07,813 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 [2020-10-19 18:30:07,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-19 18:30:07,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-19 18:30:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-19 18:30:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-10-19 18:30:07,819 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 6 [2020-10-19 18:30:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:07,820 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-10-19 18:30:07,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:30:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-10-19 18:30:07,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 18:30:07,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:07,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 18:30:07,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:30:07,821 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:07,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:07,822 INFO L82 PathProgramCache]: Analyzing trace with hash 925833038, now seen corresponding path program 1 times [2020-10-19 18:30:07,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:07,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143191070] [2020-10-19 18:30:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:30:07,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143191070] [2020-10-19 18:30:07,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:07,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 18:30:07,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665585221] [2020-10-19 18:30:07,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:30:07,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:30:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:30:07,852 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2020-10-19 18:30:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:07,907 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2020-10-19 18:30:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:30:07,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-19 18:30:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:07,909 INFO L225 Difference]: With dead ends: 34 [2020-10-19 18:30:07,909 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 18:30:07,910 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 [2020-10-19 18:30:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 18:30:07,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-19 18:30:07,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-19 18:30:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-10-19 18:30:07,919 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 6 [2020-10-19 18:30:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:07,919 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-10-19 18:30:07,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:30:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-10-19 18:30:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:30:07,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:07,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:30:07,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:30:07,921 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:07,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1363948532, now seen corresponding path program 1 times [2020-10-19 18:30:07,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:07,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995422625] [2020-10-19 18:30:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:30:07,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995422625] [2020-10-19 18:30:07,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:07,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:30:07,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484253424] [2020-10-19 18:30:07,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:30:07,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:07,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:30:07,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:30:07,952 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 3 states. [2020-10-19 18:30:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:07,964 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2020-10-19 18:30:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:30:07,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-19 18:30:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:07,966 INFO L225 Difference]: With dead ends: 30 [2020-10-19 18:30:07,967 INFO L226 Difference]: Without dead ends: 29 [2020-10-19 18:30:07,968 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 [2020-10-19 18:30:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-19 18:30:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-19 18:30:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 18:30:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2020-10-19 18:30:07,975 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 7 [2020-10-19 18:30:07,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:07,975 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2020-10-19 18:30:07,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:30:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2020-10-19 18:30:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:30:07,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:07,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:30:07,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:30:07,977 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:07,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1363946834, now seen corresponding path program 1 times [2020-10-19 18:30:07,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:07,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199148707] [2020-10-19 18:30:07,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:30:08,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199148707] [2020-10-19 18:30:08,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:08,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:30:08,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788292383] [2020-10-19 18:30:08,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:30:08,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:08,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:30:08,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:30:08,017 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 4 states. [2020-10-19 18:30:08,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:08,077 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2020-10-19 18:30:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:30:08,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:30:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:08,079 INFO L225 Difference]: With dead ends: 50 [2020-10-19 18:30:08,079 INFO L226 Difference]: Without dead ends: 48 [2020-10-19 18:30:08,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:30:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-19 18:30:08,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-19 18:30:08,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-19 18:30:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-10-19 18:30:08,092 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 7 [2020-10-19 18:30:08,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:08,093 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-10-19 18:30:08,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:30:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-10-19 18:30:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:30:08,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:08,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:30:08,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:30:08,095 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:08,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:08,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1488503985, now seen corresponding path program 1 times [2020-10-19 18:30:08,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:08,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39867783] [2020-10-19 18:30:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:30:08,113 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:30:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:30:08,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:30:08,150 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:30:08,151 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:30:08,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:30:08,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:30:08 BoogieIcfgContainer [2020-10-19 18:30:08,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:30:08,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:30:08,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:30:08,172 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:30:08,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:30:07" (3/4) ... [2020-10-19 18:30:08,175 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:30:08,220 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:30:08,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:30:08,223 INFO L168 Benchmark]: Toolchain (without parser) took 1566.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 958.6 MB in the beginning and 1.0 GB in the end (delta: -82.8 MB). Peak memory consumption was 36.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:08,223 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:30:08,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.95 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:08,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.46 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:30:08,226 INFO L168 Benchmark]: Boogie Preprocessor took 76.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -167.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:08,226 INFO L168 Benchmark]: RCFGBuilder took 313.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:08,227 INFO L168 Benchmark]: TraceAbstraction took 787.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:08,228 INFO L168 Benchmark]: Witness Printer took 48.22 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:30:08,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 297.95 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.46 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -167.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 313.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 787.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. * Witness Printer took 48.22 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, y, n; [L15] n = __VERIFIER_nondet_int() [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] COND TRUE x >= 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] COND FALSE !(y >= 0 && __VERIFIER_nondet_int() != 0) [L22] EXPR x - 1 [L22] x = x - 1 [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] COND TRUE y <= n && __VERIFIER_nondet_int() != 0 [L24] y + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 67 SDslu, 28 SDs, 0 SdLazy, 43 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=5, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 357 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...