./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/gcd_1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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_1.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 d5d419a3a7f083f15010050e5cf28b10f30a132d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:24:33,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:24:33,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:24:33,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:24:33,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:24:33,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:24:33,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:24:33,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:24:33,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:24:33,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:24:33,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:24:33,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:24:33,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:24:33,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:24:33,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:24:33,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:24:33,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:24:33,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:24:33,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:24:33,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:24:33,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:24:33,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:24:33,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:24:33,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:24:33,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:24:33,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:24:33,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:24:33,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:24:33,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:24:33,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:24:33,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:24:33,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:24:33,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:24:33,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:24:33,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:24:33,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:24:33,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:24:33,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:24:33,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:24:33,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:24:33,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:24:33,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-07-29 01:24:33,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:24:33,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:24:33,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:24:33,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:24:33,148 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:24:33,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:24:33,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 01:24:33,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:24:33,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:24:33,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 01:24:33,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:24:33,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:24:33,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:24:33,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:24:33,151 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:24:33,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 01:24:33,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:24:33,151 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:24:33,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:24:33,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:24:33,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:24:33,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:24:33,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:24:33,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:24:33,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:24:33,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:24:33,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:24:33,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:24:33,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:24:33,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:24:33,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:24:33,155 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 -> d5d419a3a7f083f15010050e5cf28b10f30a132d [2020-07-29 01:24:33,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:24:33,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:24:33,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:24:33,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:24:33,507 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:24:33,507 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_1.c [2020-07-29 01:24:33,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6e0572e/f8b566032b86473e8c5f0e0cd4e2e127/FLAG09ff306f6 [2020-07-29 01:24:33,984 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:24:33,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_1.c [2020-07-29 01:24:33,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6e0572e/f8b566032b86473e8c5f0e0cd4e2e127/FLAG09ff306f6 [2020-07-29 01:24:34,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6e0572e/f8b566032b86473e8c5f0e0cd4e2e127 [2020-07-29 01:24:34,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:24:34,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:24:34,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:34,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:24:34,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:24:34,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3264ec97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34, skipping insertion in model container [2020-07-29 01:24:34,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:24:34,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:24:34,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:34,542 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:24:34,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:34,578 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:24:34,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34 WrapperNode [2020-07-29 01:24:34,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:34,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:34,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:24:34,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:24:34,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:34,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:24:34,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:24:34,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:24:34,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (1/1) ... [2020-07-29 01:24:34,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:24:34,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:24:34,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:24:34,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:24:34,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (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 [2020-07-29 01:24:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:24:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:24:35,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:24:35,292 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-29 01:24:35,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:35 BoogieIcfgContainer [2020-07-29 01:24:35,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:24:35,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:24:35,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:24:35,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:24:35,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:24:34" (1/3) ... [2020-07-29 01:24:35,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec8fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:35, skipping insertion in model container [2020-07-29 01:24:35,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:34" (2/3) ... [2020-07-29 01:24:35,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec8fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:35, skipping insertion in model container [2020-07-29 01:24:35,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:35" (3/3) ... [2020-07-29 01:24:35,304 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_1.c [2020-07-29 01:24:35,313 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:24:35,320 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-29 01:24:35,333 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-29 01:24:35,356 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:24:35,356 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:24:35,356 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:24:35,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:24:35,357 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:24:35,357 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:24:35,357 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:24:35,357 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:24:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-29 01:24:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-29 01:24:35,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:35,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-29 01:24:35,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:35,389 INFO L82 PathProgramCache]: Analyzing trace with hash 957381, now seen corresponding path program 1 times [2020-07-29 01:24:35,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:35,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629628775] [2020-07-29 01:24:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:35,477 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-29 01:24:35,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136259307] [2020-07-29 01:24:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-29 01:24:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:35,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-29 01:24:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:35,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:24:35,738 INFO L280 TraceCheckUtils]: 0: Hoare triple {24#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~ret2, main_~x~0, main_~y~0, main_~g~0;assume -128 <= main_#t~nondet0 && main_#t~nondet0 <= 127;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume -128 <= main_#t~nondet1 && main_#t~nondet1 <= 127;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~g~0; {29#(<= 0 (+ ULTIMATE.start_main_~x~0 128))} is VALID [2020-07-29 01:24:35,740 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#(<= 0 (+ ULTIMATE.start_main_~x~0 128))} assume main_~y~0 > 0 && 0 == (if main_~x~0 < 0 && 0 != main_~x~0 % main_~y~0 then (if main_~y~0 < 0 then main_~x~0 % main_~y~0 + main_~y~0 else main_~x~0 % main_~y~0 - main_~y~0) else main_~x~0 % main_~y~0);gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b, gcd_test_~t~0;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b;havoc gcd_test_~t~0; {33#(<= 0 (+ ULTIMATE.start_gcd_test_~a 128))} is VALID [2020-07-29 01:24:35,741 INFO L280 TraceCheckUtils]: 2: Hoare triple {33#(<= 0 (+ ULTIMATE.start_gcd_test_~a 128))} assume gcd_test_~a < 0; {33#(<= 0 (+ ULTIMATE.start_gcd_test_~a 128))} is VALID [2020-07-29 01:24:35,743 INFO L280 TraceCheckUtils]: 3: Hoare triple {33#(<= 0 (+ ULTIMATE.start_gcd_test_~a 128))} assume !(-gcd_test_~a <= 2147483647); {25#false} is VALID [2020-07-29 01:24:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:24:35,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629628775] [2020-07-29 01:24:35,746 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-29 01:24:35,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136259307] [2020-07-29 01:24:35,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:35,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-29 01:24:35,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434421730] [2020-07-29 01:24:35,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-29 01:24:35,758 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:35,762 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 01:24:35,774 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:35,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-29 01:24:35,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:35,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-29 01:24:35,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-29 01:24:35,789 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2020-07-29 01:24:35,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:35,983 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-07-29 01:24:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-29 01:24:35,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-29 01:24:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:35,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:24:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2020-07-29 01:24:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:24:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2020-07-29 01:24:35,996 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 45 transitions. [2020-07-29 01:24:36,090 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:36,101 INFO L225 Difference]: With dead ends: 38 [2020-07-29 01:24:36,101 INFO L226 Difference]: Without dead ends: 11 [2020-07-29 01:24:36,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-29 01:24:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-07-29 01:24:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-07-29 01:24:36,138 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:36,139 INFO L82 GeneralOperation]: Start isEquivalent. First operand 11 states. Second operand 11 states. [2020-07-29 01:24:36,140 INFO L74 IsIncluded]: Start isIncluded. First operand 11 states. Second operand 11 states. [2020-07-29 01:24:36,141 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 11 states. [2020-07-29 01:24:36,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:36,143 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-07-29 01:24:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-07-29 01:24:36,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:36,145 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:36,145 INFO L74 IsIncluded]: Start isIncluded. First operand 11 states. Second operand 11 states. [2020-07-29 01:24:36,145 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 11 states. [2020-07-29 01:24:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:36,147 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-07-29 01:24:36,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-07-29 01:24:36,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:36,149 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:36,149 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:36,149 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-29 01:24:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-07-29 01:24:36,153 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2020-07-29 01:24:36,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:36,154 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-07-29 01:24:36,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-29 01:24:36,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-07-29 01:24:36,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-29 01:24:36,155 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:36,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-29 01:24:36,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-29 01:24:36,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:36,373 INFO L82 PathProgramCache]: Analyzing trace with hash 29678852, now seen corresponding path program 1 times [2020-07-29 01:24:36,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:36,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483463721] [2020-07-29 01:24:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:36,380 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-29 01:24:36,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470935711] [2020-07-29 01:24:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-29 01:24:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:36,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-29 01:24:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:36,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:24:36,428 INFO L280 TraceCheckUtils]: 0: Hoare triple {121#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~ret2, main_~x~0, main_~y~0, main_~g~0;assume -128 <= main_#t~nondet0 && main_#t~nondet0 <= 127;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume -128 <= main_#t~nondet1 && main_#t~nondet1 <= 127;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~g~0; {121#true} is VALID [2020-07-29 01:24:36,429 INFO L280 TraceCheckUtils]: 1: Hoare triple {121#true} assume main_~y~0 > 0 && 0 == (if main_~x~0 < 0 && 0 != main_~x~0 % main_~y~0 then (if main_~y~0 < 0 then main_~x~0 % main_~y~0 + main_~y~0 else main_~x~0 % main_~y~0 - main_~y~0) else main_~x~0 % main_~y~0);gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b, gcd_test_~t~0;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b;havoc gcd_test_~t~0; {121#true} is VALID [2020-07-29 01:24:36,430 INFO L280 TraceCheckUtils]: 2: Hoare triple {121#true} assume gcd_test_~a < 0; {132#(< ULTIMATE.start_gcd_test_~a 0)} is VALID [2020-07-29 01:24:36,433 INFO L280 TraceCheckUtils]: 3: Hoare triple {132#(< ULTIMATE.start_gcd_test_~a 0)} assume -gcd_test_~a <= 2147483647; {132#(< ULTIMATE.start_gcd_test_~a 0)} is VALID [2020-07-29 01:24:36,434 INFO L280 TraceCheckUtils]: 4: Hoare triple {132#(< ULTIMATE.start_gcd_test_~a 0)} assume !(-gcd_test_~a >= -2147483648); {122#false} is VALID [2020-07-29 01:24:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:24:36,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483463721] [2020-07-29 01:24:36,435 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-29 01:24:36,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470935711] [2020-07-29 01:24:36,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:36,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-29 01:24:36,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638909459] [2020-07-29 01:24:36,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-29 01:24:36,437 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:36,438 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 01:24:36,446 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:36,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-29 01:24:36,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:36,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 01:24:36,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:24:36,448 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2020-07-29 01:24:36,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:36,477 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-07-29 01:24:36,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 01:24:36,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-29 01:24:36,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:36,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:24:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-29 01:24:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:24:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-29 01:24:36,480 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 11 transitions. [2020-07-29 01:24:36,497 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:36,498 INFO L225 Difference]: With dead ends: 11 [2020-07-29 01:24:36,498 INFO L226 Difference]: Without dead ends: 10 [2020-07-29 01:24:36,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:24:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-29 01:24:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-29 01:24:36,501 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:36,501 INFO L82 GeneralOperation]: Start isEquivalent. First operand 10 states. Second operand 10 states. [2020-07-29 01:24:36,502 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 10 states. [2020-07-29 01:24:36,502 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 10 states. [2020-07-29 01:24:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:36,503 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-07-29 01:24:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-07-29 01:24:36,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:36,504 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:36,504 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 10 states. [2020-07-29 01:24:36,505 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 10 states. [2020-07-29 01:24:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:36,506 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-07-29 01:24:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-07-29 01:24:36,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:36,507 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:36,507 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:36,507 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-29 01:24:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-07-29 01:24:36,508 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2020-07-29 01:24:36,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:36,509 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-07-29 01:24:36,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-29 01:24:36,509 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-07-29 01:24:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-29 01:24:36,510 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:36,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-29 01:24:36,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-29 01:24:36,711 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:36,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:36,711 INFO L82 PathProgramCache]: Analyzing trace with hash 29684874, now seen corresponding path program 1 times [2020-07-29 01:24:36,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:36,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711011912] [2020-07-29 01:24:36,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:36,717 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-29 01:24:36,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771976001] [2020-07-29 01:24:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-29 01:24:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:36,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-29 01:24:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:36,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:24:36,815 INFO L280 TraceCheckUtils]: 0: Hoare triple {179#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~ret2, main_~x~0, main_~y~0, main_~g~0;assume -128 <= main_#t~nondet0 && main_#t~nondet0 <= 127;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume -128 <= main_#t~nondet1 && main_#t~nondet1 <= 127;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~g~0; {179#true} is VALID [2020-07-29 01:24:36,817 INFO L280 TraceCheckUtils]: 1: Hoare triple {179#true} assume main_~y~0 > 0 && 0 == (if main_~x~0 < 0 && 0 != main_~x~0 % main_~y~0 then (if main_~y~0 < 0 then main_~x~0 % main_~y~0 + main_~y~0 else main_~x~0 % main_~y~0 - main_~y~0) else main_~x~0 % main_~y~0);gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b, gcd_test_~t~0;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b;havoc gcd_test_~t~0; {187#(<= 1 ULTIMATE.start_gcd_test_~b)} is VALID [2020-07-29 01:24:36,818 INFO L280 TraceCheckUtils]: 2: Hoare triple {187#(<= 1 ULTIMATE.start_gcd_test_~b)} assume !(gcd_test_~a < 0); {187#(<= 1 ULTIMATE.start_gcd_test_~b)} is VALID [2020-07-29 01:24:36,819 INFO L280 TraceCheckUtils]: 3: Hoare triple {187#(<= 1 ULTIMATE.start_gcd_test_~b)} assume gcd_test_~b < 0; {187#(<= 1 ULTIMATE.start_gcd_test_~b)} is VALID [2020-07-29 01:24:36,820 INFO L280 TraceCheckUtils]: 4: Hoare triple {187#(<= 1 ULTIMATE.start_gcd_test_~b)} assume !(-gcd_test_~b <= 2147483647); {180#false} is VALID [2020-07-29 01:24:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:24:36,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711011912] [2020-07-29 01:24:36,821 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-29 01:24:36,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771976001] [2020-07-29 01:24:36,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:36,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-29 01:24:36,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373466275] [2020-07-29 01:24:36,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-29 01:24:36,823 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:36,823 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 01:24:36,831 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:36,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-29 01:24:36,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:36,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 01:24:36,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:24:36,832 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-07-29 01:24:36,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:36,843 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-07-29 01:24:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 01:24:36,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-29 01:24:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:24:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-07-29 01:24:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:24:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-07-29 01:24:36,846 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 10 transitions. [2020-07-29 01:24:36,862 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:36,863 INFO L225 Difference]: With dead ends: 10 [2020-07-29 01:24:36,863 INFO L226 Difference]: Without dead ends: 0 [2020-07-29 01:24:36,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:24:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-29 01:24:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-29 01:24:36,864 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:36,865 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-29 01:24:36,865 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-29 01:24:36,865 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-29 01:24:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:36,866 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-29 01:24:36,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-29 01:24:36,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:36,867 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:36,867 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-29 01:24:36,867 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-29 01:24:36,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:36,867 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-29 01:24:36,868 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-29 01:24:36,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:36,868 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:36,868 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:36,868 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-29 01:24:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-29 01:24:36,869 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-07-29 01:24:36,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:36,870 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 01:24:36,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-29 01:24:36,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-29 01:24:36,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:37,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-29 01:24:37,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-29 01:24:37,117 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-07-29 01:24:37,118 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-29 01:24:37,118 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-07-29 01:24:37,118 INFO L268 CegarLoopResult]: For program point L32(lines 32 36) no Hoare annotation was computed. [2020-07-29 01:24:37,118 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-07-29 01:24:37,119 INFO L264 CegarLoopResult]: At program point L32-1(lines 32 36) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x~0 128)) [2020-07-29 01:24:37,119 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-29 01:24:37,119 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-29 01:24:37,119 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-07-29 01:24:37,119 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-29 01:24:37,119 INFO L268 CegarLoopResult]: For program point L17-1(lines 11 23) no Hoare annotation was computed. [2020-07-29 01:24:37,119 INFO L268 CegarLoopResult]: For program point L17-2(lines 17 21) no Hoare annotation was computed. [2020-07-29 01:24:37,120 INFO L264 CegarLoopResult]: At program point L38(lines 26 39) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x~0 128)) [2020-07-29 01:24:37,120 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-29 01:24:37,120 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-07-29 01:24:37,120 INFO L264 CegarLoopResult]: At program point L22(lines 10 23) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x~0 128)) [2020-07-29 01:24:37,120 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-07-29 01:24:37,121 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-07-29 01:24:37,121 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-07-29 01:24:37,121 INFO L268 CegarLoopResult]: For program point L14-4(lines 11 23) no Hoare annotation was computed. [2020-07-29 01:24:37,121 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-29 01:24:37,126 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-29 01:24:37,126 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-29 01:24:37,126 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-29 01:24:37,126 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-29 01:24:37,126 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-29 01:24:37,127 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-29 01:24:37,128 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-29 01:24:37,128 WARN L170 areAnnotationChecker]: L14-4 has no Hoare annotation [2020-07-29 01:24:37,128 WARN L170 areAnnotationChecker]: L14-4 has no Hoare annotation [2020-07-29 01:24:37,128 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-29 01:24:37,128 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-29 01:24:37,128 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-29 01:24:37,128 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-29 01:24:37,129 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-29 01:24:37,129 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-29 01:24:37,129 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-29 01:24:37,129 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-29 01:24:37,129 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-29 01:24:37,129 WARN L170 areAnnotationChecker]: L15-1 has no Hoare annotation [2020-07-29 01:24:37,130 WARN L170 areAnnotationChecker]: L15-1 has no Hoare annotation [2020-07-29 01:24:37,130 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-29 01:24:37,130 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-29 01:24:37,130 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-29 01:24:37,130 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-29 01:24:37,130 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-29 01:24:37,130 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-29 01:24:37,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 01:24:37 BoogieIcfgContainer [2020-07-29 01:24:37,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 01:24:37,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:24:37,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:24:37,142 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:24:37,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:35" (3/4) ... [2020-07-29 01:24:37,147 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-29 01:24:37,158 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-29 01:24:37,159 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-29 01:24:37,212 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 01:24:37,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:24:37,215 INFO L168 Benchmark]: Toolchain (without parser) took 2905.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 957.5 MB in the beginning and 989.2 MB in the end (delta: -31.6 MB). Peak memory consumption was 113.1 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:37,216 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:37,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.37 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:37,218 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -194.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:37,218 INFO L168 Benchmark]: Boogie Preprocessor took 23.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:37,219 INFO L168 Benchmark]: RCFGBuilder took 584.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:37,220 INFO L168 Benchmark]: TraceAbstraction took 1844.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.2 MB in the end (delta: 119.7 MB). Peak memory consumption was 119.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:37,220 INFO L168 Benchmark]: Witness Printer took 70.29 ms. Allocated memory is still 1.2 GB. Free memory is still 989.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:37,224 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 265.37 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 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 107.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -194.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 584.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1844.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.2 MB in the end (delta: 119.7 MB). Peak memory consumption was 119.7 MB. Max. memory is 11.5 GB. * Witness Printer took 70.29 ms. Allocated memory is still 1.2 GB. Free memory is still 989.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: 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: 32]: Loop Invariant Derived loop invariant: 0 <= x + 128 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 <= x + 128 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 <= x + 128 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 46 SDslu, 14 SDs, 0 SdLazy, 17 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 15 HoareAnnotationTreeSize, 3 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 4 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...