./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c 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/bitvector/gcd_4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-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 32bit --witnessprinter.graph.data.programhash 9918b49e0d76e4ce36b6a6760021b33460a8ae9b ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:26:47,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:26:47,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:26:47,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:26:47,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:26:47,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:26:47,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:26:47,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:26:47,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:26:47,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:26:47,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:26:47,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:26:47,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:26:47,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:26:47,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:26:47,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:26:47,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:26:47,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:26:47,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:26:47,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:26:47,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:26:47,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:26:47,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:26:47,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:26:47,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:26:47,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:26:47,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:26:47,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:26:47,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:26:47,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:26:47,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:26:47,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:26:47,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:26:47,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:26:47,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:26:47,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:26:47,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:26:47,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:26:47,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:26:47,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:26:47,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:26:47,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-28 20:26:47,547 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:26:47,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:26:47,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:26:47,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:26:47,550 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:26:47,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:26:47,550 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:26:47,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:26:47,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:26:47,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:26:47,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:26:47,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:26:47,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:26:47,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:26:47,553 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:26:47,553 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:26:47,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:26:47,553 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:26:47,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:26:47,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:26:47,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:26:47,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:26:47,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:26:47,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:26:47,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:26:47,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:26:47,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:26:47,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:26:47,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:26:47,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:26:47,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:26:47,557 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2019-11-28 20:26:47,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:26:47,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:26:47,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:26:47,896 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:26:47,897 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:26:47,898 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_4.c [2019-11-28 20:26:47,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cd102dee/c6a1b74e9c364e46ad4b5970426ca79f/FLAG5ce54aa08 [2019-11-28 20:26:48,415 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:26:48,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c [2019-11-28 20:26:48,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cd102dee/c6a1b74e9c364e46ad4b5970426ca79f/FLAG5ce54aa08 [2019-11-28 20:26:48,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cd102dee/c6a1b74e9c364e46ad4b5970426ca79f [2019-11-28 20:26:48,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:26:48,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:26:48,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:26:48,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:26:48,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:26:48,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:26:48" (1/1) ... [2019-11-28 20:26:48,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5778aac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:48, skipping insertion in model container [2019-11-28 20:26:48,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:26:48" (1/1) ... [2019-11-28 20:26:48,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:26:48,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:26:49,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:26:49,051 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:26:49,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:26:49,088 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:26:49,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49 WrapperNode [2019-11-28 20:26:49,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:26:49,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:26:49,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:26:49,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:26:49,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (1/1) ... [2019-11-28 20:26:49,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (1/1) ... [2019-11-28 20:26:49,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:26:49,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:26:49,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:26:49,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:26:49,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (1/1) ... [2019-11-28 20:26:49,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (1/1) ... [2019-11-28 20:26:49,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (1/1) ... [2019-11-28 20:26:49,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (1/1) ... [2019-11-28 20:26:49,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (1/1) ... [2019-11-28 20:26:49,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (1/1) ... [2019-11-28 20:26:49,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (1/1) ... [2019-11-28 20:26:49,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:26:49,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:26:49,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:26:49,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:26:49,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (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 [2019-11-28 20:26:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:26:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:26:49,539 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:26:49,540 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-28 20:26:49,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:26:49 BoogieIcfgContainer [2019-11-28 20:26:49,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:26:49,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:26:49,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:26:49,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:26:49,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:26:48" (1/3) ... [2019-11-28 20:26:49,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c78d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:26:49, skipping insertion in model container [2019-11-28 20:26:49,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:49" (2/3) ... [2019-11-28 20:26:49,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c78d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:26:49, skipping insertion in model container [2019-11-28 20:26:49,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:26:49" (3/3) ... [2019-11-28 20:26:49,559 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2019-11-28 20:26:49,582 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:26:49,596 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-28 20:26:49,616 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-28 20:26:49,641 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:26:49,641 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:26:49,641 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:26:49,641 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:26:49,641 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:26:49,642 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:26:49,642 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:26:49,642 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:26:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-28 20:26:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 20:26:49,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:49,664 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 20:26:49,665 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:26:49,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:49,671 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-28 20:26:49,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:49,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505571930] [2019-11-28 20:26:49,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:49,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505571930] [2019-11-28 20:26:49,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:26:49,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:26:49,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561812657] [2019-11-28 20:26:49,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:26:49,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:49,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:26:49,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:26:49,830 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2019-11-28 20:26:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:49,932 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2019-11-28 20:26:49,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:26:49,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-28 20:26:49,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:49,942 INFO L225 Difference]: With dead ends: 90 [2019-11-28 20:26:49,942 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 20:26:49,946 INFO L630 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 [2019-11-28 20:26:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 20:26:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2019-11-28 20:26:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 20:26:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-28 20:26:49,977 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 3 [2019-11-28 20:26:49,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:49,977 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-28 20:26:49,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:26:49,978 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-28 20:26:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:26:49,978 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:49,978 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:26:49,979 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:26:49,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:49,980 INFO L82 PathProgramCache]: Analyzing trace with hash 963371, now seen corresponding path program 1 times [2019-11-28 20:26:49,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:49,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564439102] [2019-11-28 20:26:49,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:50,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564439102] [2019-11-28 20:26:50,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:26:50,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:26:50,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548604820] [2019-11-28 20:26:50,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:26:50,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:50,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:26:50,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:26:50,018 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2019-11-28 20:26:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:50,086 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-11-28 20:26:50,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:26:50,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:26:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:50,090 INFO L225 Difference]: With dead ends: 39 [2019-11-28 20:26:50,090 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 20:26:50,091 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:26:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 20:26:50,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2019-11-28 20:26:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 20:26:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-28 20:26:50,095 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2019-11-28 20:26:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:50,095 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-28 20:26:50,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:26:50,096 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-28 20:26:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:26:50,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:50,096 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:26:50,097 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:26:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:50,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1359081932, now seen corresponding path program 1 times [2019-11-28 20:26:50,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:50,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935628794] [2019-11-28 20:26:50,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:50,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:50,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935628794] [2019-11-28 20:26:50,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:26:50,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:26:50,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803048181] [2019-11-28 20:26:50,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:26:50,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:50,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:26:50,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:26:50,146 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2019-11-28 20:26:50,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:50,204 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-11-28 20:26:50,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:26:50,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 20:26:50,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:50,207 INFO L225 Difference]: With dead ends: 28 [2019-11-28 20:26:50,207 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 20:26:50,207 INFO L630 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 [2019-11-28 20:26:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 20:26:50,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-28 20:26:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 20:26:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-28 20:26:50,212 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7 [2019-11-28 20:26:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:50,212 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-28 20:26:50,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:26:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-28 20:26:50,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:26:50,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:50,213 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:26:50,214 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:26:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:50,214 INFO L82 PathProgramCache]: Analyzing trace with hash -934966417, now seen corresponding path program 1 times [2019-11-28 20:26:50,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:50,215 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675637317] [2019-11-28 20:26:50,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:50,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675637317] [2019-11-28 20:26:50,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313419960] [2019-11-28 20:26:50,270 INFO L94 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 [2019-11-28 20:26:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:50,303 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 20:26:50,308 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:26:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:50,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:26:50,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2019-11-28 20:26:50,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121786707] [2019-11-28 20:26:50,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:26:50,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:50,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:26:50,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:26:50,355 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2019-11-28 20:26:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:50,411 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-11-28 20:26:50,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:26:50,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 20:26:50,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:50,413 INFO L225 Difference]: With dead ends: 28 [2019-11-28 20:26:50,413 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 20:26:50,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:26:50,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 20:26:50,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-28 20:26:50,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 20:26:50,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-28 20:26:50,420 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2019-11-28 20:26:50,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:50,420 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-28 20:26:50,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:26:50,421 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-28 20:26:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:26:50,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:50,421 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:26:50,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:50,628 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:26:50,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:50,629 INFO L82 PathProgramCache]: Analyzing trace with hash -934966225, now seen corresponding path program 1 times [2019-11-28 20:26:50,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:50,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438765219] [2019-11-28 20:26:50,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:50,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438765219] [2019-11-28 20:26:50,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799024476] [2019-11-28 20:26:50,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:50,727 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 20:26:50,729 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:26:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:50,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:26:50,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2019-11-28 20:26:50,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869927979] [2019-11-28 20:26:50,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:26:50,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:50,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:26:50,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:26:50,764 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2019-11-28 20:26:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:50,820 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2019-11-28 20:26:50,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:26:50,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 20:26:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:50,822 INFO L225 Difference]: With dead ends: 40 [2019-11-28 20:26:50,822 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 20:26:50,823 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:26:50,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 20:26:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-28 20:26:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 20:26:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-28 20:26:50,828 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 11 [2019-11-28 20:26:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:50,829 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-28 20:26:50,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:26:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-28 20:26:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 20:26:50,830 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:50,830 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 20:26:51,034 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:51,035 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:26:51,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:51,036 INFO L82 PathProgramCache]: Analyzing trace with hash -892996630, now seen corresponding path program 2 times [2019-11-28 20:26:51,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:51,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686697861] [2019-11-28 20:26:51,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:51,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686697861] [2019-11-28 20:26:51,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569678247] [2019-11-28 20:26:51,127 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:51,167 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:26:51,168 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:26:51,173 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 20:26:51,175 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:26:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:51,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:26:51,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2019-11-28 20:26:51,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4771357] [2019-11-28 20:26:51,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:26:51,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:51,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:26:51,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:26:51,245 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2019-11-28 20:26:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:51,315 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-11-28 20:26:51,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:26:51,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-28 20:26:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:51,317 INFO L225 Difference]: With dead ends: 44 [2019-11-28 20:26:51,317 INFO L226 Difference]: Without dead ends: 32 [2019-11-28 20:26:51,318 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:26:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-28 20:26:51,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-28 20:26:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-28 20:26:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-28 20:26:51,333 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 15 [2019-11-28 20:26:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:51,333 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-28 20:26:51,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:26:51,334 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-28 20:26:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 20:26:51,334 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:51,334 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-28 20:26:51,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:51,536 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:26:51,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:51,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1124468261, now seen corresponding path program 3 times [2019-11-28 20:26:51,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:51,537 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292926948] [2019-11-28 20:26:51,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:51,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292926948] [2019-11-28 20:26:51,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434859250] [2019-11-28 20:26:51,611 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:51,634 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-28 20:26:51,635 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:26:51,636 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:26:51,637 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:26:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-28 20:26:51,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:26:51,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2019-11-28 20:26:51,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785428558] [2019-11-28 20:26:51,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:26:51,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:51,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:26:51,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:26:51,696 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2019-11-28 20:26:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:51,741 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-28 20:26:51,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:26:51,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-28 20:26:51,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:51,743 INFO L225 Difference]: With dead ends: 32 [2019-11-28 20:26:51,743 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 20:26:51,743 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:26:51,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 20:26:51,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-11-28 20:26:51,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 20:26:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-28 20:26:51,749 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2019-11-28 20:26:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:51,750 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-28 20:26:51,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:26:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-28 20:26:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 20:26:51,751 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:51,751 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:26:51,960 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:51,961 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:26:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:51,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1497309926, now seen corresponding path program 1 times [2019-11-28 20:26:51,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:51,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771808516] [2019-11-28 20:26:51,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:52,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771808516] [2019-11-28 20:26:52,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727396383] [2019-11-28 20:26:52,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:52,131 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 20:26:52,133 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:26:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:52,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:26:52,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2019-11-28 20:26:52,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972577040] [2019-11-28 20:26:52,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 20:26:52,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:52,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 20:26:52,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:26:52,238 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 13 states. [2019-11-28 20:26:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:52,357 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-11-28 20:26:52,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:26:52,357 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2019-11-28 20:26:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:52,358 INFO L225 Difference]: With dead ends: 49 [2019-11-28 20:26:52,358 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 20:26:52,359 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:26:52,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 20:26:52,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-28 20:26:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 20:26:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-11-28 20:26:52,365 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2019-11-28 20:26:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:52,365 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-11-28 20:26:52,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 20:26:52,366 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-11-28 20:26:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-28 20:26:52,366 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:52,367 INFO L410 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-28 20:26:52,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:52,568 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:26:52,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:52,569 INFO L82 PathProgramCache]: Analyzing trace with hash -906966518, now seen corresponding path program 2 times [2019-11-28 20:26:52,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:52,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407191861] [2019-11-28 20:26:52,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:52,756 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407191861] [2019-11-28 20:26:52,756 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235682527] [2019-11-28 20:26:52,757 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:52,801 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:26:52,801 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:26:52,802 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 20:26:52,805 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:26:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:53,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:26:53,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2019-11-28 20:26:53,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419842187] [2019-11-28 20:26:53,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 20:26:53,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:53,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 20:26:53,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2019-11-28 20:26:53,005 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 17 states. [2019-11-28 20:26:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:53,818 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2019-11-28 20:26:53,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-28 20:26:53,818 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2019-11-28 20:26:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:53,821 INFO L225 Difference]: With dead ends: 61 [2019-11-28 20:26:53,821 INFO L226 Difference]: Without dead ends: 60 [2019-11-28 20:26:53,822 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2019-11-28 20:26:53,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-28 20:26:53,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2019-11-28 20:26:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-28 20:26:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2019-11-28 20:26:53,830 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 31 [2019-11-28 20:26:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:53,830 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-11-28 20:26:53,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 20:26:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2019-11-28 20:26:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-28 20:26:53,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:53,832 INFO L410 BasicCegarLoop]: trace histogram [9, 6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1] [2019-11-28 20:26:54,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:54,044 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:26:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash -764331526, now seen corresponding path program 3 times [2019-11-28 20:26:54,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:54,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681857262] [2019-11-28 20:26:54,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:26:54,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681857262] [2019-11-28 20:26:54,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11610876] [2019-11-28 20:26:54,257 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:54,290 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-28 20:26:54,290 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:26:54,291 INFO L264 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:26:54,293 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:26:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-28 20:26:54,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:26:54,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2019-11-28 20:26:54,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155152700] [2019-11-28 20:26:54,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:26:54,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:54,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:26:54,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-11-28 20:26:54,383 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 6 states. [2019-11-28 20:26:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:54,422 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2019-11-28 20:26:54,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:26:54,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-11-28 20:26:54,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:54,423 INFO L225 Difference]: With dead ends: 47 [2019-11-28 20:26:54,424 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:26:54,424 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-11-28 20:26:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:26:54,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:26:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:26:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:26:54,425 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-11-28 20:26:54,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:54,425 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:26:54,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:26:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:26:54,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:26:54,629 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:26:54,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 20:26:54,675 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-11-28 20:26:54,675 INFO L246 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-28 20:26:54,675 INFO L246 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-28 20:26:54,675 INFO L246 CegarLoopResult]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2019-11-28 20:26:54,675 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-28 20:26:54,676 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 12) no Hoare annotation was computed. [2019-11-28 20:26:54,676 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 20:26:54,676 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-28 20:26:54,676 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 20:26:54,676 INFO L246 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2019-11-28 20:26:54,676 INFO L242 CegarLoopResult]: At program point L20-2(lines 19 25) the Hoare annotation is: (and (<= ULTIMATE.start_gcd_test_~a 2147483647) (<= 0 ULTIMATE.start_gcd_test_~b) (<= 1 ULTIMATE.start_gcd_test_~a) (<= ULTIMATE.start_gcd_test_~b 18)) [2019-11-28 20:26:54,676 INFO L249 CegarLoopResult]: At program point L45(lines 30 46) the Hoare annotation is: true [2019-11-28 20:26:54,676 INFO L246 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2019-11-28 20:26:54,676 INFO L246 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point L12-4(lines 11 27) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 12) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point L13-3(lines 11 27) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-28 20:26:54,677 INFO L249 CegarLoopResult]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2019-11-28 20:26:54,677 INFO L246 CegarLoopResult]: For program point L5-3(lines 5 7) no Hoare annotation was computed. [2019-11-28 20:26:54,678 INFO L249 CegarLoopResult]: At program point L5-5(lines 4 9) the Hoare annotation is: true [2019-11-28 20:26:54,678 INFO L246 CegarLoopResult]: For program point L5-6(lines 5 7) no Hoare annotation was computed. [2019-11-28 20:26:54,678 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-11-28 20:26:54,679 INFO L249 CegarLoopResult]: At program point L5-8(lines 4 9) the Hoare annotation is: true [2019-11-28 20:26:54,679 INFO L249 CegarLoopResult]: At program point L26(lines 10 27) the Hoare annotation is: true [2019-11-28 20:26:54,679 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-28 20:26:54,679 INFO L246 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-28 20:26:54,679 INFO L246 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-11-28 20:26:54,679 INFO L246 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2019-11-28 20:26:54,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:26:54 BoogieIcfgContainer [2019-11-28 20:26:54,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:26:54,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:26:54,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:26:54,693 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:26:54,693 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:26:49" (3/4) ... [2019-11-28 20:26:54,696 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:26:54,706 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-28 20:26:54,706 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 20:26:54,753 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:26:54,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:26:54,755 INFO L168 Benchmark]: Toolchain (without parser) took 5948.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:54,756 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:26:54,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.89 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:54,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:54,758 INFO L168 Benchmark]: Boogie Preprocessor took 21.17 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:54,758 INFO L168 Benchmark]: RCFGBuilder took 325.64 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:54,759 INFO L168 Benchmark]: TraceAbstraction took 5143.84 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -47.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:54,760 INFO L168 Benchmark]: Witness Printer took 60.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:26:54,763 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 279.89 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 104.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.17 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 325.64 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5143.84 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -47.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Witness Printer took 60.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((a <= 2147483647 && 0 <= b) && 1 <= a) && b <= 18 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 8 error locations. Result: SAFE, OverallTime: 4.9s, OverallIterations: 10, TraceHistogramMax: 9, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 188 SDslu, 14 SDs, 0 SdLazy, 642 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 38 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 26 NumberOfFragments, 18 HoareAnnotationTreeSize, 6 FomulaSimplifications, 278 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 312 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 295 ConstructedInterpolants, 3 QuantifiedInterpolants, 52695 SizeOfPredicates, 25 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 176/446 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...