./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/McCarthy91-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/McCarthy91-1.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 90ff89d2ba0517af453003604f3ee5a230759bec ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 06:28:17,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:28:17,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:28:17,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:28:17,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:28:17,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:28:17,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:28:17,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:28:17,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:28:17,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:28:17,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:28:17,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:28:17,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:28:17,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:28:17,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:28:17,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:28:17,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:28:17,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:28:17,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:28:17,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:28:17,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:28:17,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:28:17,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:28:17,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:28:17,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:28:17,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:28:17,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:28:17,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:28:17,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:28:17,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:28:17,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:28:17,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:28:17,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:28:17,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:28:17,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:28:17,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:28:17,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:28:17,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:28:17,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:28:17,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:28:17,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:28:17,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-10-20 06:28:17,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:28:17,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:28:17,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:28:17,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:28:17,125 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:28:17,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:28:17,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:28:17,125 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:28:17,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:28:17,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:28:17,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:28:17,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:28:17,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:28:17,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:28:17,127 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:28:17,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:28:17,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:28:17,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:28:17,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:28:17,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:28:17,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:28:17,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:28:17,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:28:17,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:28:17,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:28:17,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:28:17,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:28:17,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:28:17,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:28:17,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:28:17,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:28:17,131 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 -> 90ff89d2ba0517af453003604f3ee5a230759bec [2020-10-20 06:28:17,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:28:17,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:28:17,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:28:17,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:28:17,341 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:28:17,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/McCarthy91-1.c [2020-10-20 06:28:17,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2cf1691/cb6f4c25086c44d1bff3d41d0eb7b87f/FLAGe9a7351aa [2020-10-20 06:28:17,835 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:28:17,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-1.c [2020-10-20 06:28:17,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2cf1691/cb6f4c25086c44d1bff3d41d0eb7b87f/FLAGe9a7351aa [2020-10-20 06:28:18,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2cf1691/cb6f4c25086c44d1bff3d41d0eb7b87f [2020-10-20 06:28:18,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:28:18,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:28:18,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:28:18,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:28:18,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:28:18,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e236d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18, skipping insertion in model container [2020-10-20 06:28:18,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:28:18,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:28:18,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:28:18,491 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:28:18,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:28:18,523 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:28:18,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18 WrapperNode [2020-10-20 06:28:18,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:28:18,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:28:18,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:28:18,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:28:18,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:28:18,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:28:18,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:28:18,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:28:18,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (1/1) ... [2020-10-20 06:28:18,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:28:18,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:28:18,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:28:18,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:28:18,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (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 06:28:18,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:28:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:28:18,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:28:18,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:28:18,635 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-10-20 06:28:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-10-20 06:28:18,866 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:28:18,866 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:28:18,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:18 BoogieIcfgContainer [2020-10-20 06:28:18,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:28:18,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:28:18,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:28:18,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:28:18,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:28:18" (1/3) ... [2020-10-20 06:28:18,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c68abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:28:18, skipping insertion in model container [2020-10-20 06:28:18,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:18" (2/3) ... [2020-10-20 06:28:18,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c68abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:28:18, skipping insertion in model container [2020-10-20 06:28:18,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:18" (3/3) ... [2020-10-20 06:28:18,879 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91-1.c [2020-10-20 06:28:18,895 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:28:18,903 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 06:28:18,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 06:28:18,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:28:18,944 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:28:18,944 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:28:18,944 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:28:18,944 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:28:18,945 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:28:18,945 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:28:18,945 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:28:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 06:28:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:28:18,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:18,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:28:18,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:18,978 INFO L82 PathProgramCache]: Analyzing trace with hash 890933714, now seen corresponding path program 1 times [2020-10-20 06:28:18,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:18,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102487242] [2020-10-20 06:28:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,181 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 06:28:19,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102487242] [2020-10-20 06:28:19,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:19,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:28:19,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813968656] [2020-10-20 06:28:19,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:28:19,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:19,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:28:19,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:28:19,204 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-10-20 06:28:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:19,348 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-10-20 06:28:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:28:19,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-10-20 06:28:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:19,362 INFO L225 Difference]: With dead ends: 54 [2020-10-20 06:28:19,362 INFO L226 Difference]: Without dead ends: 42 [2020-10-20 06:28:19,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 06:28:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-20 06:28:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-10-20 06:28:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 06:28:19,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-10-20 06:28:19,416 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 6 [2020-10-20 06:28:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:19,416 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-10-20 06:28:19,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:28:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-10-20 06:28:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:28:19,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:19,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:28:19,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:28:19,418 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:19,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:19,419 INFO L82 PathProgramCache]: Analyzing trace with hash 890933874, now seen corresponding path program 1 times [2020-10-20 06:28:19,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:19,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242556391] [2020-10-20 06:28:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,454 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 06:28:19,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242556391] [2020-10-20 06:28:19,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:19,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:28:19,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181871960] [2020-10-20 06:28:19,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:28:19,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:19,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:28:19,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:28:19,460 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 3 states. [2020-10-20 06:28:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:19,486 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-10-20 06:28:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:28:19,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 06:28:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:19,489 INFO L225 Difference]: With dead ends: 41 [2020-10-20 06:28:19,490 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 06:28:19,491 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 06:28:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 06:28:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-10-20 06:28:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 06:28:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-20 06:28:19,503 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 6 [2020-10-20 06:28:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:19,503 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-20 06:28:19,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:28:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-20 06:28:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:28:19,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:19,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:19,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:28:19,505 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:19,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1849141429, now seen corresponding path program 1 times [2020-10-20 06:28:19,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:19,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705418356] [2020-10-20 06:28:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,541 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 06:28:19,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705418356] [2020-10-20 06:28:19,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:19,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:28:19,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857751799] [2020-10-20 06:28:19,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:28:19,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:19,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:28:19,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:28:19,543 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 3 states. [2020-10-20 06:28:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:19,564 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-10-20 06:28:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:28:19,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-20 06:28:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:19,568 INFO L225 Difference]: With dead ends: 40 [2020-10-20 06:28:19,568 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 06:28:19,569 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 06:28:19,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 06:28:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-10-20 06:28:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:28:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-20 06:28:19,580 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 7 [2020-10-20 06:28:19,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:19,581 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-20 06:28:19,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:28:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-20 06:28:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:28:19,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:19,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:19,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:28:19,583 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:19,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1849146394, now seen corresponding path program 1 times [2020-10-20 06:28:19,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:19,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749596084] [2020-10-20 06:28:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,649 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 06:28:19,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749596084] [2020-10-20 06:28:19,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:19,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:28:19,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194490075] [2020-10-20 06:28:19,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:28:19,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:19,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:28:19,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:28:19,655 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 5 states. [2020-10-20 06:28:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:19,743 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-20 06:28:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:28:19,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-20 06:28:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:19,746 INFO L225 Difference]: With dead ends: 51 [2020-10-20 06:28:19,746 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 06:28:19,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 06:28:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 06:28:19,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-20 06:28:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 06:28:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-20 06:28:19,758 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 7 [2020-10-20 06:28:19,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:19,759 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-20 06:28:19,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:28:19,759 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-20 06:28:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:28:19,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:19,760 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:19,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:28:19,761 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:19,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:19,762 INFO L82 PathProgramCache]: Analyzing trace with hash -712030488, now seen corresponding path program 1 times [2020-10-20 06:28:19,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:19,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636345571] [2020-10-20 06:28:19,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,807 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 06:28:19,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636345571] [2020-10-20 06:28:19,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:19,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:28:19,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075412135] [2020-10-20 06:28:19,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:28:19,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:19,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:28:19,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:28:19,810 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-10-20 06:28:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:19,899 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-20 06:28:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:28:19,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 06:28:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:19,902 INFO L225 Difference]: With dead ends: 69 [2020-10-20 06:28:19,902 INFO L226 Difference]: Without dead ends: 68 [2020-10-20 06:28:19,903 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 06:28:19,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-20 06:28:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2020-10-20 06:28:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-20 06:28:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-20 06:28:19,917 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 11 [2020-10-20 06:28:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:19,917 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-20 06:28:19,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:28:19,918 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-20 06:28:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:28:19,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:19,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:19,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:28:19,920 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:19,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:19,920 INFO L82 PathProgramCache]: Analyzing trace with hash -100890224, now seen corresponding path program 1 times [2020-10-20 06:28:19,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:19,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258343246] [2020-10-20 06:28:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 06:28:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,980 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 06:28:19,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258343246] [2020-10-20 06:28:19,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:19,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:28:19,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893067509] [2020-10-20 06:28:19,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:28:19,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:19,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:28:19,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:28:19,983 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 4 states. [2020-10-20 06:28:19,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:19,995 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-10-20 06:28:19,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:28:19,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 06:28:19,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:19,997 INFO L225 Difference]: With dead ends: 59 [2020-10-20 06:28:19,997 INFO L226 Difference]: Without dead ends: 48 [2020-10-20 06:28:19,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:28:19,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-20 06:28:20,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-20 06:28:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-20 06:28:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-20 06:28:20,007 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-10-20 06:28:20,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:20,008 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-20 06:28:20,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:28:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-20 06:28:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:28:20,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:20,009 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:20,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:28:20,010 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:20,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:20,011 INFO L82 PathProgramCache]: Analyzing trace with hash 213464823, now seen corresponding path program 1 times [2020-10-20 06:28:20,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:20,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974018686] [2020-10-20 06:28:20,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:20,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:28:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:20,128 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 06:28:20,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974018686] [2020-10-20 06:28:20,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136647568] [2020-10-20 06:28:20,129 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 06:28:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:20,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:28:20,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:20,365 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 06:28:20,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:20,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2020-10-20 06:28:20,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783971512] [2020-10-20 06:28:20,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:28:20,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:20,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:28:20,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:28:20,367 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 15 states. [2020-10-20 06:28:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:20,657 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2020-10-20 06:28:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:28:20,658 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2020-10-20 06:28:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:20,659 INFO L225 Difference]: With dead ends: 71 [2020-10-20 06:28:20,660 INFO L226 Difference]: Without dead ends: 70 [2020-10-20 06:28:20,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 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 06:28:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-20 06:28:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2020-10-20 06:28:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 06:28:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-20 06:28:20,671 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 19 [2020-10-20 06:28:20,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:20,672 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-20 06:28:20,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:28:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-20 06:28:20,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:28:20,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:20,683 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:20,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-20 06:28:20,898 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:20,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:20,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1972520043, now seen corresponding path program 1 times [2020-10-20 06:28:20,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:20,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642052201] [2020-10-20 06:28:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:20,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:28:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:21,008 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 06:28:21,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642052201] [2020-10-20 06:28:21,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:21,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:28:21,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279133358] [2020-10-20 06:28:21,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:28:21,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:21,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:28:21,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:28:21,011 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 7 states. [2020-10-20 06:28:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:21,162 INFO L93 Difference]: Finished difference Result 99 states and 128 transitions. [2020-10-20 06:28:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:28:21,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-20 06:28:21,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:21,168 INFO L225 Difference]: With dead ends: 99 [2020-10-20 06:28:21,169 INFO L226 Difference]: Without dead ends: 98 [2020-10-20 06:28:21,170 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 06:28:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-20 06:28:21,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2020-10-20 06:28:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-20 06:28:21,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2020-10-20 06:28:21,216 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 20 [2020-10-20 06:28:21,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:21,217 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2020-10-20 06:28:21,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:28:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2020-10-20 06:28:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-20 06:28:21,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:21,221 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:21,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:28:21,222 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:21,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:21,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1233206362, now seen corresponding path program 1 times [2020-10-20 06:28:21,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:21,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876371816] [2020-10-20 06:28:21,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:21,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 06:28:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:21,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:28:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:21,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:28:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:21,355 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 06:28:21,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876371816] [2020-10-20 06:28:21,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:21,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:28:21,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880127258] [2020-10-20 06:28:21,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:28:21,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:21,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:28:21,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:28:21,357 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand 8 states. [2020-10-20 06:28:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:21,526 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2020-10-20 06:28:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:28:21,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-20 06:28:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:21,528 INFO L225 Difference]: With dead ends: 93 [2020-10-20 06:28:21,528 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:28:21,530 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 06:28:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:28:21,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:28:21,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:28:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:28:21,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-10-20 06:28:21,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:21,531 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:28:21,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:28:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:28:21,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:28:21,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:28:21,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:28:21,825 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-10-20 06:28:21,826 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:28:21,826 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-20 06:28:21,826 INFO L274 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-10-20 06:28:21,826 INFO L274 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-10-20 06:28:21,826 INFO L274 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-10-20 06:28:21,826 INFO L274 CegarLoopResult]: For program point L29-6(line 29) no Hoare annotation was computed. [2020-10-20 06:28:21,826 INFO L274 CegarLoopResult]: For program point L29-7(lines 29 33) no Hoare annotation was computed. [2020-10-20 06:28:21,827 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 06:28:21,827 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-20 06:28:21,827 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 06:28:21,828 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-10-20 06:28:21,828 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:28:21,828 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:28:21,828 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2020-10-20 06:28:21,828 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-10-20 06:28:21,828 INFO L270 CegarLoopResult]: At program point L26(lines 26 34) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-10-20 06:28:21,828 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-20 06:28:21,829 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-10-20 06:28:21,829 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 06:28:21,829 INFO L270 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (let ((.cse0 (= f91_~x |f91_#in~x|))) (and (or (not (<= 0 (+ |f91_#in~x| 2147483648))) .cse0 (not (<= |f91_#in~x| 2147483647))) (or (and (<= f91_~x 100) .cse0) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))))) [2020-10-20 06:28:21,830 INFO L274 CegarLoopResult]: For program point f91EXIT(lines 17 23) no Hoare annotation was computed. [2020-10-20 06:28:21,830 INFO L274 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2020-10-20 06:28:21,830 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-20 06:28:21,832 INFO L274 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-10-20 06:28:21,832 INFO L270 CegarLoopResult]: At program point L21-4(line 21) the Hoare annotation is: (let ((.cse0 (= f91_~x |f91_#in~x|))) (and (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (and (<= 91 |f91_#t~ret7|) .cse0 (<= |f91_#t~ret7| 2147483648)) (not (<= |f91_#in~x| 2147483647))) (or (and (<= f91_~x 100) .cse0) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))))) [2020-10-20 06:28:21,833 INFO L274 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-10-20 06:28:21,833 INFO L274 CegarLoopResult]: For program point f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-20 06:28:21,833 INFO L277 CegarLoopResult]: At program point f91ENTRY(lines 17 23) the Hoare annotation is: true [2020-10-20 06:28:21,834 INFO L274 CegarLoopResult]: For program point f91FINAL(lines 17 23) no Hoare annotation was computed. [2020-10-20 06:28:21,834 INFO L274 CegarLoopResult]: For program point f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-20 06:28:21,834 INFO L274 CegarLoopResult]: For program point f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-10-20 06:28:21,834 INFO L274 CegarLoopResult]: For program point f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-10-20 06:28:21,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:28:21 BoogieIcfgContainer [2020-10-20 06:28:21,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:28:21,853 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:28:21,853 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:28:21,853 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:28:21,854 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:18" (3/4) ... [2020-10-20 06:28:21,857 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:28:21,866 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2020-10-20 06:28:21,874 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 06:28:21,875 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 06:28:21,875 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:28:21,875 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:28:21,921 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:28:21,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:28:21,924 INFO L168 Benchmark]: Toolchain (without parser) took 3707.85 ms. Allocated memory was 35.1 MB in the beginning and 59.2 MB in the end (delta: 24.1 MB). Free memory was 6.9 MB in the beginning and 13.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:21,925 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 34.6 MB. Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:28:21,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.96 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 18.9 MB in the beginning and 27.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:21,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.00 ms. Allocated memory is still 45.1 MB. Free memory was 27.9 MB in the beginning and 26.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:21,927 INFO L168 Benchmark]: Boogie Preprocessor took 17.31 ms. Allocated memory is still 45.1 MB. Free memory was 26.3 MB in the beginning and 25.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:21,928 INFO L168 Benchmark]: RCFGBuilder took 293.41 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 25.0 MB in the beginning and 23.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:21,929 INFO L168 Benchmark]: TraceAbstraction took 2981.77 ms. Allocated memory was 46.7 MB in the beginning and 59.2 MB in the end (delta: 12.6 MB). Free memory was 22.8 MB in the beginning and 17.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:21,929 INFO L168 Benchmark]: Witness Printer took 68.71 ms. Allocated memory is still 59.2 MB. Free memory was 17.4 MB in the beginning and 13.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:21,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 34.6 MB. Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 290.96 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 18.9 MB in the beginning and 27.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 33.00 ms. Allocated memory is still 45.1 MB. Free memory was 27.9 MB in the beginning and 26.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 17.31 ms. Allocated memory is still 45.1 MB. Free memory was 26.3 MB in the beginning and 25.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 293.41 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 25.0 MB in the beginning and 23.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2981.77 ms. Allocated memory was 46.7 MB in the beginning and 59.2 MB in the end (delta: 12.6 MB). Free memory was 22.8 MB in the beginning and 17.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 14.3 GB. * Witness Printer took 68.71 ms. Allocated memory is still 59.2 MB. Free memory was 17.4 MB in the beginning and 13.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 9, TraceHistogramMax: 7, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 186 SDtfs, 222 SDslu, 325 SDs, 0 SdLazy, 457 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=8, 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, 9 MinimizatonAttempts, 57 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 59 PreInvPairs, 60 NumberOfFragments, 82 HoareAnnotationTreeSize, 59 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 314 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 6594 SizeOfPredicates, 4 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 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...