./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/termination-crafted/McCarthy91_Recursion.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 871be16186d4378aec884efd2352a47ca4eb57bc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 06:22:02,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:22:02,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:22:02,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:22:02,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:22:02,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:22:02,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:22:02,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:22:02,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:22:02,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:22:02,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:22:02,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:22:02,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:22:02,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:22:02,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:22:02,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:22:02,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:22:02,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:22:02,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:22:02,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:22:02,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:22:02,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:22:02,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:22:02,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:22:02,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:22:02,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:22:02,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:22:02,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:22:02,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:22:02,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:22:02,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:22:02,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:22:02,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:22:02,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:22:02,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:22:02,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:22:02,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:22:02,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:22:02,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:22:02,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:22:02,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:22:02,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:22:02,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:22:02,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:22:02,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:22:02,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:22:02,251 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:22:02,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:22:02,251 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:22:02,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:22:02,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:22:02,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:22:02,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:22:02,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:22:02,253 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:22:02,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:22:02,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:22:02,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:22:02,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:22:02,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:22:02,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:22:02,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:22:02,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:22:02,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:22:02,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:22:02,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:22:02,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:22:02,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:22:02,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:22:02,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:22:02,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 871be16186d4378aec884efd2352a47ca4eb57bc [2020-10-20 06:22:02,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:22:02,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:22:02,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:22:02,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:22:02,470 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:22:02,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2020-10-20 06:22:02,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ef6b4981/7e20c838fb114cb18dd1523f6c6853b0/FLAG6c3a5b01a [2020-10-20 06:22:02,992 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:22:02,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2020-10-20 06:22:02,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ef6b4981/7e20c838fb114cb18dd1523f6c6853b0/FLAG6c3a5b01a [2020-10-20 06:22:03,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ef6b4981/7e20c838fb114cb18dd1523f6c6853b0 [2020-10-20 06:22:03,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:22:03,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:22:03,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:03,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:22:03,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:22:03,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ef12d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03, skipping insertion in model container [2020-10-20 06:22:03,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:22:03,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:22:03,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:03,617 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:22:03,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:03,650 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:22:03,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03 WrapperNode [2020-10-20 06:22:03,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:03,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:03,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:22:03,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:22:03,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:03,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:22:03,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:22:03,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:22:03,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (1/1) ... [2020-10-20 06:22:03,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:22:03,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:22:03,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:22:03,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:22:03,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (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 06:22:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:22:03,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:22:03,785 INFO L130 BoogieDeclarations]: Found specification of procedure mc91 [2020-10-20 06:22:03,785 INFO L138 BoogieDeclarations]: Found implementation of procedure mc91 [2020-10-20 06:22:03,954 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:22:03,955 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:22:03,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:03 BoogieIcfgContainer [2020-10-20 06:22:03,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:22:03,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:22:03,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:22:03,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:22:03,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:22:03" (1/3) ... [2020-10-20 06:22:03,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bec8108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:03, skipping insertion in model container [2020-10-20 06:22:03,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:03" (2/3) ... [2020-10-20 06:22:03,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bec8108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:03, skipping insertion in model container [2020-10-20 06:22:03,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:03" (3/3) ... [2020-10-20 06:22:03,965 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91_Recursion.c [2020-10-20 06:22:03,977 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:22:03,984 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:22:03,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:22:04,018 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:22:04,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:22:04,018 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:22:04,019 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:22:04,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:22:04,019 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:22:04,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:22:04,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:22:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-20 06:22:04,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:22:04,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:04,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:22:04,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:04,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:04,044 INFO L82 PathProgramCache]: Analyzing trace with hash 30304495, now seen corresponding path program 1 times [2020-10-20 06:22:04,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:04,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160983525] [2020-10-20 06:22:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:04,225 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 06:22:04,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160983525] [2020-10-20 06:22:04,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:04,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:22:04,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23154171] [2020-10-20 06:22:04,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:22:04,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:04,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:22:04,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:22:04,247 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-10-20 06:22:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:04,399 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-20 06:22:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:04,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-10-20 06:22:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:04,416 INFO L225 Difference]: With dead ends: 40 [2020-10-20 06:22:04,416 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 06:22:04,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 06:22:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-10-20 06:22:04,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:22:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-10-20 06:22:04,491 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 5 [2020-10-20 06:22:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:04,492 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-10-20 06:22:04,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:22:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-10-20 06:22:04,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:22:04,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:04,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:22:04,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:22:04,494 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash 30304655, now seen corresponding path program 1 times [2020-10-20 06:22:04,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:04,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088105212] [2020-10-20 06:22:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:04,515 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 06:22:04,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088105212] [2020-10-20 06:22:04,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:04,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:22:04,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074815433] [2020-10-20 06:22:04,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:04,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:04,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:04,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:04,520 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 3 states. [2020-10-20 06:22:04,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:04,545 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-10-20 06:22:04,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:04,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 06:22:04,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:04,548 INFO L225 Difference]: With dead ends: 29 [2020-10-20 06:22:04,548 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 06:22:04,554 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 06:22:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 06:22:04,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-20 06:22:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 06:22:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-10-20 06:22:04,569 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 5 [2020-10-20 06:22:04,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:04,570 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-10-20 06:22:04,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-10-20 06:22:04,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:22:04,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:04,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:22:04,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:22:04,572 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:04,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:04,573 INFO L82 PathProgramCache]: Analyzing trace with hash 939439389, now seen corresponding path program 1 times [2020-10-20 06:22:04,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:04,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855013650] [2020-10-20 06:22:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:04,599 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 06:22:04,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855013650] [2020-10-20 06:22:04,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:04,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:22:04,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773267117] [2020-10-20 06:22:04,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:04,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:04,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:04,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:04,602 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 3 states. [2020-10-20 06:22:04,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:04,623 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2020-10-20 06:22:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:04,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 06:22:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:04,625 INFO L225 Difference]: With dead ends: 28 [2020-10-20 06:22:04,626 INFO L226 Difference]: Without dead ends: 25 [2020-10-20 06:22:04,626 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 06:22:04,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-20 06:22:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-20 06:22:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 06:22:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-20 06:22:04,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 6 [2020-10-20 06:22:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:04,636 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-20 06:22:04,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:04,637 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-20 06:22:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:22:04,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:04,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:22:04,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:22:04,638 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:04,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:04,639 INFO L82 PathProgramCache]: Analyzing trace with hash 939444354, now seen corresponding path program 1 times [2020-10-20 06:22:04,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:04,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873123054] [2020-10-20 06:22:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:04,677 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 06:22:04,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873123054] [2020-10-20 06:22:04,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:04,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:22:04,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194810095] [2020-10-20 06:22:04,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:22:04,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:04,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:22:04,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:22:04,681 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-10-20 06:22:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:04,765 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-10-20 06:22:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:04,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-10-20 06:22:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:04,768 INFO L225 Difference]: With dead ends: 39 [2020-10-20 06:22:04,768 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 06:22:04,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:04,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 06:22:04,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-20 06:22:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:22:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-20 06:22:04,789 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 6 [2020-10-20 06:22:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:04,789 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-20 06:22:04,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:22:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-20 06:22:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:22:04,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:04,791 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:04,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:22:04,792 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:04,792 INFO L82 PathProgramCache]: Analyzing trace with hash 312291472, now seen corresponding path program 1 times [2020-10-20 06:22:04,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:04,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259153308] [2020-10-20 06:22:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:04,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259153308] [2020-10-20 06:22:04,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:04,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:22:04,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896995235] [2020-10-20 06:22:04,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:22:04,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:04,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:22:04,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:22:04,833 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2020-10-20 06:22:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:04,932 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-10-20 06:22:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:04,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 06:22:04,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:04,935 INFO L225 Difference]: With dead ends: 55 [2020-10-20 06:22:04,935 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 06:22:04,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:22:04,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 06:22:04,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2020-10-20 06:22:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 06:22:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-20 06:22:04,950 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 10 [2020-10-20 06:22:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:04,951 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-20 06:22:04,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:22:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-20 06:22:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:22:04,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:04,952 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:04,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:22:04,953 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:04,954 INFO L82 PathProgramCache]: Analyzing trace with hash -904725729, now seen corresponding path program 1 times [2020-10-20 06:22:04,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:04,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466084747] [2020-10-20 06:22:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:05,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:22:05,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466084747] [2020-10-20 06:22:05,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792446416] [2020-10-20 06:22:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:05,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:22:05,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:05,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:05,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2020-10-20 06:22:05,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228637729] [2020-10-20 06:22:05,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:22:05,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:05,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:22:05,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:22:05,254 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 15 states. [2020-10-20 06:22:05,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:05,588 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2020-10-20 06:22:05,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:22:05,589 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-20 06:22:05,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:05,591 INFO L225 Difference]: With dead ends: 70 [2020-10-20 06:22:05,591 INFO L226 Difference]: Without dead ends: 69 [2020-10-20 06:22:05,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2020-10-20 06:22:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-20 06:22:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2020-10-20 06:22:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-20 06:22:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-20 06:22:05,604 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 18 [2020-10-20 06:22:05,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:05,605 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-20 06:22:05,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:22:05,605 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-20 06:22:05,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:22:05,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:05,606 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:05,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-20 06:22:05,821 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:05,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2018278482, now seen corresponding path program 1 times [2020-10-20 06:22:05,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:05,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142381006] [2020-10-20 06:22:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:05,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:22:05,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142381006] [2020-10-20 06:22:05,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:05,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:22:05,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333908254] [2020-10-20 06:22:05,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:22:05,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:05,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:22:05,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:22:05,892 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2020-10-20 06:22:06,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:06,029 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2020-10-20 06:22:06,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:22:06,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-20 06:22:06,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:06,032 INFO L225 Difference]: With dead ends: 98 [2020-10-20 06:22:06,032 INFO L226 Difference]: Without dead ends: 97 [2020-10-20 06:22:06,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:22:06,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-20 06:22:06,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2020-10-20 06:22:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-20 06:22:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2020-10-20 06:22:06,067 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 19 [2020-10-20 06:22:06,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:06,067 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2020-10-20 06:22:06,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:22:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2020-10-20 06:22:06,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-20 06:22:06,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:06,071 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-20 06:22:06,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:22:06,071 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:06,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:06,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1310326519, now seen corresponding path program 1 times [2020-10-20 06:22:06,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:06,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769685912] [2020-10-20 06:22:06,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:06,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-20 06:22:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:06,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-20 06:22:06,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769685912] [2020-10-20 06:22:06,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:06,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:22:06,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612107175] [2020-10-20 06:22:06,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:22:06,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:06,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:22:06,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:22:06,242 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 8 states. [2020-10-20 06:22:06,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:06,428 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2020-10-20 06:22:06,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:22:06,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-20 06:22:06,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:06,430 INFO L225 Difference]: With dead ends: 92 [2020-10-20 06:22:06,430 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:22:06,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:22:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:22:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:22:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:22:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:22:06,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-10-20 06:22:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:06,433 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:22:06,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:22:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:22:06,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:22:06,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:22:06,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:22:06,764 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:22:06,765 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2020-10-20 06:22:06,765 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-20 06:22:06,765 INFO L274 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-10-20 06:22:06,765 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:22:06,765 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:22:06,765 INFO L274 CegarLoopResult]: For program point mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2020-10-20 06:22:06,765 INFO L274 CegarLoopResult]: For program point mc91FINAL(lines 8 12) no Hoare annotation was computed. [2020-10-20 06:22:06,766 INFO L274 CegarLoopResult]: For program point mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2020-10-20 06:22:06,766 INFO L274 CegarLoopResult]: For program point mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-10-20 06:22:06,766 INFO L274 CegarLoopResult]: For program point mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-10-20 06:22:06,766 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-20 06:22:06,766 INFO L274 CegarLoopResult]: For program point L10(lines 10 11) no Hoare annotation was computed. [2020-10-20 06:22:06,766 INFO L274 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-10-20 06:22:06,766 INFO L274 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-10-20 06:22:06,767 INFO L270 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse0 (= mc91_~n |mc91_#in~n|))) (and (or .cse0 (not (<= 0 (+ |mc91_#in~n| 2147483648))) (not (<= |mc91_#in~n| 111))) (or (and (<= mc91_~n 100) .cse0) (not (<= |mc91_#in~n| 2147483648)) (not (<= 91 |mc91_#in~n|))))) [2020-10-20 06:22:06,767 INFO L274 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-10-20 06:22:06,767 INFO L274 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-10-20 06:22:06,767 INFO L270 CegarLoopResult]: At program point L11-4(line 11) the Hoare annotation is: (let ((.cse0 (= mc91_~n |mc91_#in~n|))) (and (or (and (<= mc91_~n 100) .cse0) (not (<= |mc91_#in~n| 2147483648)) (not (<= 91 |mc91_#in~n|))) (or (not (<= 0 (+ |mc91_#in~n| 2147483648))) (not (<= |mc91_#in~n| 111)) (and .cse0 (<= |mc91_#t~ret0| 2147483648) (<= 91 |mc91_#t~ret0|))))) [2020-10-20 06:22:06,767 INFO L277 CegarLoopResult]: At program point mc91ENTRY(lines 8 12) the Hoare annotation is: true [2020-10-20 06:22:06,767 INFO L274 CegarLoopResult]: For program point L11-5(line 11) no Hoare annotation was computed. [2020-10-20 06:22:06,768 INFO L274 CegarLoopResult]: For program point mc91EXIT(lines 8 12) no Hoare annotation was computed. [2020-10-20 06:22:06,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:22:06 BoogieIcfgContainer [2020-10-20 06:22:06,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:22:06,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:22:06,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:22:06,774 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:22:06,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:03" (3/4) ... [2020-10-20 06:22:06,778 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:22:06,785 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure mc91 [2020-10-20 06:22:06,789 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 06:22:06,790 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:22:06,833 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:22:06,833 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:22:06,835 INFO L168 Benchmark]: Toolchain (without parser) took 3474.63 ms. Allocated memory was 35.7 MB in the beginning and 56.6 MB in the end (delta: 21.0 MB). Free memory was 16.1 MB in the beginning and 29.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:06,836 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-20 06:22:06,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.03 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 15.2 MB in the beginning and 27.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:06,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.10 ms. Allocated memory is still 44.6 MB. Free memory was 27.6 MB in the beginning and 26.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:06,838 INFO L168 Benchmark]: Boogie Preprocessor took 29.35 ms. Allocated memory is still 44.6 MB. Free memory was 26.2 MB in the beginning and 25.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:06,839 INFO L168 Benchmark]: RCFGBuilder took 238.40 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 25.0 MB in the beginning and 26.4 MB in the end (delta: -1.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:06,839 INFO L168 Benchmark]: TraceAbstraction took 2815.34 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.8 MB in the beginning and 32.6 MB in the end (delta: -6.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:06,840 INFO L168 Benchmark]: Witness Printer took 59.37 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 29.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:06,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 285.03 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 15.2 MB in the beginning and 27.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 36.10 ms. Allocated memory is still 44.6 MB. Free memory was 27.6 MB in the beginning and 26.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.35 ms. Allocated memory is still 44.6 MB. Free memory was 26.2 MB in the beginning and 25.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 238.40 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 25.0 MB in the beginning and 26.4 MB in the end (delta: -1.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2815.34 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.8 MB in the beginning and 32.6 MB in the end (delta: -6.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.3 GB. * Witness Printer took 59.37 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 29.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 213 SDslu, 226 SDs, 0 SdLazy, 403 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 51 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 58 PreInvPairs, 58 NumberOfFragments, 79 HoareAnnotationTreeSize, 58 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 314 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 5895 SizeOfPredicates, 4 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 94/102 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...