./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/gcd_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.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_2.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 09113822ff1f24d8cc0fc226021f8d226800fb83 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:29:20,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:29:20,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:29:20,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:29:20,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:29:20,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:29:20,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:29:20,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:29:20,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:29:20,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:29:20,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:29:20,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:29:20,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:29:20,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:29:20,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:29:20,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:29:20,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:29:20,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:29:20,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:29:20,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:29:20,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:29:20,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:29:20,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:29:20,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:29:20,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:29:20,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:29:20,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:29:20,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:29:20,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:29:20,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:29:20,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:29:20,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:29:20,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:29:20,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:29:20,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:29:20,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:29:20,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:29:20,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:29:20,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:29:20,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:29:20,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:29:20,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-10-20 06:29:20,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:29:20,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:29:20,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:29:20,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:29:20,826 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:29:20,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:29:20,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:29:20,827 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:29:20,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:29:20,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:29:20,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:29:20,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:29:20,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:29:20,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:29:20,829 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:29:20,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:29:20,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:29:20,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:29:20,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:29:20,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:29:20,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:29:20,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:29:20,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:29:20,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:29:20,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:29:20,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:29:20,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:29:20,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:29:20,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:29:20,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:29:20,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:29:20,832 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 -> 09113822ff1f24d8cc0fc226021f8d226800fb83 [2020-10-20 06:29:21,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:29:21,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:29:21,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:29:21,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:29:21,061 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:29:21,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_2.c [2020-10-20 06:29:21,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/757110100/9e226a594adc44b8be00a1d2fe1580de/FLAGa7ef47ebc [2020-10-20 06:29:21,695 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:29:21,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_2.c [2020-10-20 06:29:21,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/757110100/9e226a594adc44b8be00a1d2fe1580de/FLAGa7ef47ebc [2020-10-20 06:29:21,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/757110100/9e226a594adc44b8be00a1d2fe1580de [2020-10-20 06:29:21,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:29:21,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:29:21,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:29:21,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:29:21,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:29:21,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:29:21" (1/1) ... [2020-10-20 06:29:21,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f8d579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:21, skipping insertion in model container [2020-10-20 06:29:21,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:29:21" (1/1) ... [2020-10-20 06:29:21,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:29:22,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:29:22,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:29:22,251 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:29:22,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:29:22,320 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:29:22,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22 WrapperNode [2020-10-20 06:29:22,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:29:22,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:29:22,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:29:22,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:29:22,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (1/1) ... [2020-10-20 06:29:22,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (1/1) ... [2020-10-20 06:29:22,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:29:22,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:29:22,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:29:22,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:29:22,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (1/1) ... [2020-10-20 06:29:22,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (1/1) ... [2020-10-20 06:29:22,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (1/1) ... [2020-10-20 06:29:22,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (1/1) ... [2020-10-20 06:29:22,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (1/1) ... [2020-10-20 06:29:22,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (1/1) ... [2020-10-20 06:29:22,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (1/1) ... [2020-10-20 06:29:22,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:29:22,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:29:22,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:29:22,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:29:22,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (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 [2020-10-20 06:29:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:29:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:29:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:29:22,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:29:22,777 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:29:22,777 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-20 06:29:22,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:29:22 BoogieIcfgContainer [2020-10-20 06:29:22,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:29:22,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:29:22,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:29:22,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:29:22,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:29:21" (1/3) ... [2020-10-20 06:29:22,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0646dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:29:22, skipping insertion in model container [2020-10-20 06:29:22,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:22" (2/3) ... [2020-10-20 06:29:22,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0646dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:29:22, skipping insertion in model container [2020-10-20 06:29:22,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:29:22" (3/3) ... [2020-10-20 06:29:22,788 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2.c [2020-10-20 06:29:22,800 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:29:22,808 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:29:22,822 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:29:22,847 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:29:22,847 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:29:22,847 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:29:22,847 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:29:22,848 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:29:22,848 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:29:22,848 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:29:22,848 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:29:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-20 06:29:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:29:22,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:29:22,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:29:22,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:29:22,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:29:22,876 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-20 06:29:22,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:29:22,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452279607] [2020-10-20 06:29:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:29:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:29:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:29:23,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452279607] [2020-10-20 06:29:23,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:29:23,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:29:23,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79397126] [2020-10-20 06:29:23,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:29:23,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:29:23,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:29:23,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:29:23,102 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-10-20 06:29:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:29:23,189 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-10-20 06:29:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:29:23,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-20 06:29:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:29:23,204 INFO L225 Difference]: With dead ends: 42 [2020-10-20 06:29:23,204 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 06:29:23,209 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 [2020-10-20 06:29:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 06:29:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 06:29:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 06:29:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 06:29:23,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2020-10-20 06:29:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:29:23,252 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 06:29:23,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:29:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 06:29:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:29:23,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:29:23,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:29:23,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:29:23,254 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:29:23,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:29:23,255 INFO L82 PathProgramCache]: Analyzing trace with hash 28693763, now seen corresponding path program 1 times [2020-10-20 06:29:23,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:29:23,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002396401] [2020-10-20 06:29:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:29:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:29:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:29:23,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002396401] [2020-10-20 06:29:23,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:29:23,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:29:23,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772921165] [2020-10-20 06:29:23,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:29:23,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:29:23,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:29:23,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:29:23,296 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2020-10-20 06:29:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:29:23,310 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-10-20 06:29:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:29:23,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 06:29:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:29:23,312 INFO L225 Difference]: With dead ends: 11 [2020-10-20 06:29:23,312 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 06:29:23,313 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 [2020-10-20 06:29:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 06:29:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 06:29:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 06:29:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-20 06:29:23,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2020-10-20 06:29:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:29:23,317 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-20 06:29:23,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:29:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-20 06:29:23,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:29:23,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:29:23,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:29:23,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:29:23,318 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:29:23,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:29:23,319 INFO L82 PathProgramCache]: Analyzing trace with hash 28699785, now seen corresponding path program 1 times [2020-10-20 06:29:23,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:29:23,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639545666] [2020-10-20 06:29:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:29:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:29:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:29:23,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639545666] [2020-10-20 06:29:23,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:29:23,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:29:23,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99766688] [2020-10-20 06:29:23,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:29:23,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:29:23,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:29:23,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:29:23,403 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-10-20 06:29:23,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:29:23,416 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-10-20 06:29:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:29:23,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 06:29:23,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:29:23,418 INFO L225 Difference]: With dead ends: 10 [2020-10-20 06:29:23,418 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 06:29:23,418 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 [2020-10-20 06:29:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 06:29:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 06:29:23,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 06:29:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-20 06:29:23,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-10-20 06:29:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:29:23,422 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 06:29:23,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:29:23,423 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-20 06:29:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:29:23,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:29:23,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:29:23,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:29:23,424 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:29:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:29:23,424 INFO L82 PathProgramCache]: Analyzing trace with hash 889693384, now seen corresponding path program 1 times [2020-10-20 06:29:23,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:29:23,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796990856] [2020-10-20 06:29:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:29:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:29:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:29:23,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796990856] [2020-10-20 06:29:23,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:29:23,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:29:23,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000614332] [2020-10-20 06:29:23,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:29:23,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:29:23,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:29:23,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:29:23,461 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2020-10-20 06:29:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:29:23,467 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-10-20 06:29:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:29:23,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 06:29:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:29:23,469 INFO L225 Difference]: With dead ends: 9 [2020-10-20 06:29:23,469 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:29:23,470 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 [2020-10-20 06:29:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:29:23,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:29:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:29:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:29:23,471 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-10-20 06:29:23,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:29:23,471 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:29:23,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:29:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:29:23,471 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:29:23,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:29:23,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:29:23,492 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-10-20 06:29:23,492 INFO L274 CegarLoopResult]: For program point L19-1(lines 13 25) no Hoare annotation was computed. [2020-10-20 06:29:23,492 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2020-10-20 06:29:23,493 INFO L277 CegarLoopResult]: At program point L40(lines 28 41) the Hoare annotation is: true [2020-10-20 06:29:23,493 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-20 06:29:23,493 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-20 06:29:23,493 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 06:29:23,493 INFO L277 CegarLoopResult]: At program point L36-1(lines 36 38) the Hoare annotation is: true [2020-10-20 06:29:23,493 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 06:29:23,493 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2020-10-20 06:29:23,494 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:29:23,494 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:29:23,494 INFO L277 CegarLoopResult]: At program point L24(lines 12 25) the Hoare annotation is: true [2020-10-20 06:29:23,494 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-20 06:29:23,494 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-20 06:29:23,494 INFO L274 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-10-20 06:29:23,494 INFO L274 CegarLoopResult]: For program point L16-4(lines 13 25) no Hoare annotation was computed. [2020-10-20 06:29:23,495 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-20 06:29:23,495 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2020-10-20 06:29:23,495 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:29:23,495 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-10-20 06:29:23,495 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-10-20 06:29:23,495 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-10-20 06:29:23,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:29:23 BoogieIcfgContainer [2020-10-20 06:29:23,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:29:23,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:29:23,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:29:23,507 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:29:23,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:29:22" (3/4) ... [2020-10-20 06:29:23,512 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:29:23,525 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 06:29:23,525 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 06:29:23,525 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:29:23,526 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:29:23,574 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:29:23,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:29:23,576 INFO L168 Benchmark]: Toolchain (without parser) took 1602.55 ms. Allocated memory was 43.0 MB in the beginning and 48.2 MB in the end (delta: 5.2 MB). Free memory was 23.4 MB in the beginning and 18.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:23,577 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 31.5 MB. Free memory was 9.1 MB in the beginning and 9.1 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:29:23,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.70 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 22.6 MB in the beginning and 24.5 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:23,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.23 ms. Allocated memory is still 43.5 MB. Free memory was 24.3 MB in the beginning and 22.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:23,579 INFO L168 Benchmark]: Boogie Preprocessor took 52.24 ms. Allocated memory is still 43.5 MB. Free memory was 22.6 MB in the beginning and 21.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:23,580 INFO L168 Benchmark]: RCFGBuilder took 335.86 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 21.3 MB in the beginning and 23.7 MB in the end (delta: -2.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:23,581 INFO L168 Benchmark]: TraceAbstraction took 725.98 ms. Allocated memory was 45.1 MB in the beginning and 48.2 MB in the end (delta: 3.1 MB). Free memory was 23.2 MB in the beginning and 21.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:23,582 INFO L168 Benchmark]: Witness Printer took 66.84 ms. Allocated memory is still 48.2 MB. Free memory was 21.5 MB in the beginning and 18.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:23,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 31.5 MB. Free memory was 9.1 MB in the beginning and 9.1 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 341.70 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 22.6 MB in the beginning and 24.5 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 62.23 ms. Allocated memory is still 43.5 MB. Free memory was 24.3 MB in the beginning and 22.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 52.24 ms. Allocated memory is still 43.5 MB. Free memory was 22.6 MB in the beginning and 21.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 335.86 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 21.3 MB in the beginning and 23.7 MB in the end (delta: -2.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 725.98 ms. Allocated memory was 45.1 MB in the beginning and 48.2 MB in the end (delta: 3.1 MB). Free memory was 23.2 MB in the beginning and 21.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. * Witness Printer took 66.84 ms. Allocated memory is still 48.2 MB. Free memory was 21.5 MB in the beginning and 18.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 24 SDslu, 21 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 correct! Received shutdown request...