./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.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 457415f9b28998cf0ba7f80d69eaf14873f5a98f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:24:34,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:24:34,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:24:34,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:24:34,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:24:34,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:24:34,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:24:34,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:24:34,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:24:34,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:24:34,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:24:34,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:24:34,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:24:34,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:24:34,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:24:34,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:24:34,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:24:34,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:24:34,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:24:34,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:24:34,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:24:34,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:24:34,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:24:34,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:24:34,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:24:34,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:24:34,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:24:34,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:24:34,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:24:34,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:24:34,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:24:34,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:24:34,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:24:34,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:24:34,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:24:34,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:24:34,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:24:34,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:24:34,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:24:34,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:24:34,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:24:34,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:24:35,010 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:24:35,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:24:35,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:24:35,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:24:35,013 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:24:35,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:24:35,014 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:24:35,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:24:35,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:24:35,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:24:35,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:24:35,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:24:35,016 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:24:35,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:24:35,017 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:24:35,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:24:35,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:24:35,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:24:35,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:24:35,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:24:35,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:24:35,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:24:35,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:24:35,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:24:35,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:24:35,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:24:35,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:24:35,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:24:35,020 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 -> 457415f9b28998cf0ba7f80d69eaf14873f5a98f [2019-11-28 20:24:35,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:24:35,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:24:35,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:24:35,424 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:24:35,424 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:24:35,425 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2019-11-28 20:24:35,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3b10f50/3f762c4a2d5b41f89f57240ccb3043e5/FLAGbe4b9b672 [2019-11-28 20:24:35,930 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:24:35,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2019-11-28 20:24:35,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3b10f50/3f762c4a2d5b41f89f57240ccb3043e5/FLAGbe4b9b672 [2019-11-28 20:24:36,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3b10f50/3f762c4a2d5b41f89f57240ccb3043e5 [2019-11-28 20:24:36,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:24:36,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:24:36,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:36,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:24:36,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:24:36,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf4c1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36, skipping insertion in model container [2019-11-28 20:24:36,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:24:36,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:24:36,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:36,614 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:24:36,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:36,642 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:24:36,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36 WrapperNode [2019-11-28 20:24:36,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:36,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:36,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:24:36,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:24:36,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:36,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:24:36,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:24:36,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:24:36,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (1/1) ... [2019-11-28 20:24:36,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:24:36,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:24:36,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:24:36,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:24:36,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:24:36,825 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-28 20:24:36,825 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-28 20:24:36,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:24:36,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:24:37,021 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:24:37,021 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 20:24:37,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:37 BoogieIcfgContainer [2019-11-28 20:24:37,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:24:37,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:24:37,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:24:37,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:24:37,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:36" (1/3) ... [2019-11-28 20:24:37,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2daac0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:37, skipping insertion in model container [2019-11-28 20:24:37,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36" (2/3) ... [2019-11-28 20:24:37,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2daac0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:37, skipping insertion in model container [2019-11-28 20:24:37,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:37" (3/3) ... [2019-11-28 20:24:37,031 INFO L109 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5.c [2019-11-28 20:24:37,039 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:24:37,045 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 20:24:37,056 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 20:24:37,080 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:24:37,081 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:24:37,081 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:24:37,081 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:24:37,081 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:24:37,082 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:24:37,082 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:24:37,082 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:24:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-28 20:24:37,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:24:37,106 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:37,107 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:37,107 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:37,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1461861353, now seen corresponding path program 1 times [2019-11-28 20:24:37,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:37,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715568647] [2019-11-28 20:24:37,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:37,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715568647] [2019-11-28 20:24:37,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:37,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:24:37,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104286928] [2019-11-28 20:24:37,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:24:37,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:37,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:24:37,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:37,355 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2019-11-28 20:24:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:37,494 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2019-11-28 20:24:37,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:24:37,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 20:24:37,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:37,509 INFO L225 Difference]: With dead ends: 44 [2019-11-28 20:24:37,509 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 20:24:37,516 INFO L630 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 [2019-11-28 20:24:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 20:24:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2019-11-28 20:24:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 20:24:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-28 20:24:37,553 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2019-11-28 20:24:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:37,554 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-28 20:24:37,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:24:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-28 20:24:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:24:37,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:37,555 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:37,556 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:37,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:37,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1461861577, now seen corresponding path program 1 times [2019-11-28 20:24:37,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:37,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672050528] [2019-11-28 20:24:37,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:37,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672050528] [2019-11-28 20:24:37,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:37,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:24:37,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466535491] [2019-11-28 20:24:37,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:24:37,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:37,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:24:37,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:37,629 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2019-11-28 20:24:37,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:37,733 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-11-28 20:24:37,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:24:37,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 20:24:37,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:37,737 INFO L225 Difference]: With dead ends: 34 [2019-11-28 20:24:37,737 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 20:24:37,738 INFO L630 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 [2019-11-28 20:24:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 20:24:37,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2019-11-28 20:24:37,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 20:24:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-28 20:24:37,758 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2019-11-28 20:24:37,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:37,760 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-28 20:24:37,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:24:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-28 20:24:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 20:24:37,762 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:37,762 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:37,763 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:37,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:37,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1926938272, now seen corresponding path program 1 times [2019-11-28 20:24:37,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:37,764 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839230372] [2019-11-28 20:24:37,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:37,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839230372] [2019-11-28 20:24:37,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:37,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:24:37,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190942944] [2019-11-28 20:24:37,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:24:37,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:37,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:24:37,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:37,835 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-11-28 20:24:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:37,882 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-11-28 20:24:37,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:24:37,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-28 20:24:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:37,884 INFO L225 Difference]: With dead ends: 33 [2019-11-28 20:24:37,884 INFO L226 Difference]: Without dead ends: 32 [2019-11-28 20:24:37,885 INFO L630 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 [2019-11-28 20:24:37,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-28 20:24:37,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2019-11-28 20:24:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 20:24:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-28 20:24:37,893 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 8 [2019-11-28 20:24:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:37,894 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-28 20:24:37,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:24:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-28 20:24:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 20:24:37,895 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:37,895 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:37,896 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:37,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:37,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1926931321, now seen corresponding path program 1 times [2019-11-28 20:24:37,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:37,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206900422] [2019-11-28 20:24:37,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:37,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206900422] [2019-11-28 20:24:37,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:37,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:24:37,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121204807] [2019-11-28 20:24:37,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:24:37,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:37,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:24:37,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:37,937 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2019-11-28 20:24:37,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:37,987 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-28 20:24:37,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:24:37,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-28 20:24:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:37,989 INFO L225 Difference]: With dead ends: 32 [2019-11-28 20:24:37,989 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 20:24:37,990 INFO L630 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 [2019-11-28 20:24:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 20:24:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2019-11-28 20:24:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 20:24:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-11-28 20:24:37,997 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 8 [2019-11-28 20:24:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:37,997 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-11-28 20:24:37,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:24:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-11-28 20:24:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 20:24:37,998 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:37,999 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:37,999 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:38,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1954337320, now seen corresponding path program 1 times [2019-11-28 20:24:38,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:38,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450290669] [2019-11-28 20:24:38,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:38,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450290669] [2019-11-28 20:24:38,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:38,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:24:38,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941451927] [2019-11-28 20:24:38,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:24:38,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:38,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:24:38,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:38,063 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2019-11-28 20:24:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:38,175 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2019-11-28 20:24:38,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:24:38,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-28 20:24:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:38,180 INFO L225 Difference]: With dead ends: 43 [2019-11-28 20:24:38,180 INFO L226 Difference]: Without dead ends: 42 [2019-11-28 20:24:38,181 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:24:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-28 20:24:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2019-11-28 20:24:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-28 20:24:38,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-11-28 20:24:38,190 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 13 [2019-11-28 20:24:38,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:38,190 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-11-28 20:24:38,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:24:38,191 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-11-28 20:24:38,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 20:24:38,192 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:38,192 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:38,192 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:38,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:38,193 INFO L82 PathProgramCache]: Analyzing trace with hash -906050173, now seen corresponding path program 1 times [2019-11-28 20:24:38,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:38,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056623309] [2019-11-28 20:24:38,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:38,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056623309] [2019-11-28 20:24:38,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367675041] [2019-11-28 20:24:38,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:38,297 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:24:38,304 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:38,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:24:38,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2019-11-28 20:24:38,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171425292] [2019-11-28 20:24:38,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:24:38,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:38,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:24:38,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:24:38,367 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2019-11-28 20:24:38,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:38,454 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2019-11-28 20:24:38,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:24:38,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-28 20:24:38,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:38,456 INFO L225 Difference]: With dead ends: 38 [2019-11-28 20:24:38,456 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 20:24:38,457 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-28 20:24:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 20:24:38,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2019-11-28 20:24:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 20:24:38,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-28 20:24:38,464 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2019-11-28 20:24:38,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:38,465 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-28 20:24:38,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:24:38,465 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-28 20:24:38,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 20:24:38,466 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:38,467 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:38,667 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:38,669 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:38,670 INFO L82 PathProgramCache]: Analyzing trace with hash -906049949, now seen corresponding path program 1 times [2019-11-28 20:24:38,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:38,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690088995] [2019-11-28 20:24:38,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:38,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690088995] [2019-11-28 20:24:38,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341702473] [2019-11-28 20:24:38,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:38,753 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 20:24:38,755 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:38,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:38,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-28 20:24:38,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769112763] [2019-11-28 20:24:38,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:24:38,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:38,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:24:38,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:24:38,764 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2019-11-28 20:24:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:38,964 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2019-11-28 20:24:38,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 20:24:38,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-28 20:24:38,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:38,967 INFO L225 Difference]: With dead ends: 65 [2019-11-28 20:24:38,967 INFO L226 Difference]: Without dead ends: 64 [2019-11-28 20:24:38,970 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:24:38,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-28 20:24:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2019-11-28 20:24:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-28 20:24:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2019-11-28 20:24:38,992 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 13 [2019-11-28 20:24:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:38,993 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2019-11-28 20:24:38,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:24:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2019-11-28 20:24:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 20:24:38,995 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:38,996 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:39,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:39,208 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:39,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:39,209 INFO L82 PathProgramCache]: Analyzing trace with hash 454907873, now seen corresponding path program 1 times [2019-11-28 20:24:39,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:39,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426616271] [2019-11-28 20:24:39,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:39,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426616271] [2019-11-28 20:24:39,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177946771] [2019-11-28 20:24:39,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:39,303 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:24:39,306 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:39,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:39,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2019-11-28 20:24:39,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029909904] [2019-11-28 20:24:39,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 20:24:39,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:39,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 20:24:39,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:24:39,368 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 10 states. [2019-11-28 20:24:39,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:39,563 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2019-11-28 20:24:39,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 20:24:39,564 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-28 20:24:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:39,565 INFO L225 Difference]: With dead ends: 64 [2019-11-28 20:24:39,565 INFO L226 Difference]: Without dead ends: 39 [2019-11-28 20:24:39,567 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2019-11-28 20:24:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-28 20:24:39,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-11-28 20:24:39,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 20:24:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-28 20:24:39,574 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 14 [2019-11-28 20:24:39,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:39,574 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-28 20:24:39,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 20:24:39,575 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-28 20:24:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 20:24:39,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:39,576 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:39,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:39,781 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:39,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:39,782 INFO L82 PathProgramCache]: Analyzing trace with hash 454914824, now seen corresponding path program 1 times [2019-11-28 20:24:39,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:39,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689996025] [2019-11-28 20:24:39,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:39,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689996025] [2019-11-28 20:24:39,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907870362] [2019-11-28 20:24:39,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 20:24:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:39,891 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:24:39,892 INFO L287 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:39,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:24:39,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2019-11-28 20:24:39,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305998867] [2019-11-28 20:24:39,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:24:39,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:39,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:24:39,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:24:39,937 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2019-11-28 20:24:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:40,015 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-11-28 20:24:40,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:24:40,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 20:24:40,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:40,017 INFO L225 Difference]: With dead ends: 38 [2019-11-28 20:24:40,018 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 20:24:40,018 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:24:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 20:24:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-28 20:24:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 20:24:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-11-28 20:24:40,033 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 14 [2019-11-28 20:24:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:40,033 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-11-28 20:24:40,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:24:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2019-11-28 20:24:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 20:24:40,034 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:40,035 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:40,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:40,236 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:40,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:40,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1977222701, now seen corresponding path program 1 times [2019-11-28 20:24:40,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:40,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74975266] [2019-11-28 20:24:40,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:40,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74975266] [2019-11-28 20:24:40,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902442968] [2019-11-28 20:24:40,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:40,326 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:24:40,328 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:40,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:40,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-28 20:24:40,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106727733] [2019-11-28 20:24:40,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:24:40,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:40,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:24:40,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:24:40,335 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 7 states. [2019-11-28 20:24:40,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:40,432 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2019-11-28 20:24:40,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 20:24:40,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-28 20:24:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:40,433 INFO L225 Difference]: With dead ends: 45 [2019-11-28 20:24:40,434 INFO L226 Difference]: Without dead ends: 44 [2019-11-28 20:24:40,435 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:24:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-28 20:24:40,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-11-28 20:24:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 20:24:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-11-28 20:24:40,445 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 14 [2019-11-28 20:24:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:40,446 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-11-28 20:24:40,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:24:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-11-28 20:24:40,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 20:24:40,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:40,447 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2019-11-28 20:24:40,650 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:40,651 INFO L410 AbstractCegarLoop]: === Iteration 11 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:40,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1341115267, now seen corresponding path program 2 times [2019-11-28 20:24:40,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:40,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716637594] [2019-11-28 20:24:40,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:40,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716637594] [2019-11-28 20:24:40,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146168427] [2019-11-28 20:24:40,788 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 20:24:40,828 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:24:40,829 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:40,830 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:24:40,832 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:40,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:40,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2019-11-28 20:24:40,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307408923] [2019-11-28 20:24:40,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 20:24:40,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:40,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 20:24:40,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:24:40,870 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 12 states. [2019-11-28 20:24:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:41,218 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2019-11-28 20:24:41,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-28 20:24:41,219 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-11-28 20:24:41,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:41,220 INFO L225 Difference]: With dead ends: 78 [2019-11-28 20:24:41,220 INFO L226 Difference]: Without dead ends: 77 [2019-11-28 20:24:41,221 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2019-11-28 20:24:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-28 20:24:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 24. [2019-11-28 20:24:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 20:24:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-11-28 20:24:41,227 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2019-11-28 20:24:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:41,228 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-11-28 20:24:41,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 20:24:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-11-28 20:24:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:24:41,229 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:41,229 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:41,439 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:41,440 INFO L410 AbstractCegarLoop]: === Iteration 12 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:41,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:41,441 INFO L82 PathProgramCache]: Analyzing trace with hash 451770350, now seen corresponding path program 1 times [2019-11-28 20:24:41,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:41,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830803262] [2019-11-28 20:24:41,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:41,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830803262] [2019-11-28 20:24:41,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174572151] [2019-11-28 20:24:41,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:41,542 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 20:24:41,543 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:41,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:41,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-28 20:24:41,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868570705] [2019-11-28 20:24:41,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 20:24:41,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:41,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 20:24:41,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:24:41,556 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 9 states. [2019-11-28 20:24:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:41,671 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2019-11-28 20:24:41,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 20:24:41,673 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-11-28 20:24:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:41,673 INFO L225 Difference]: With dead ends: 37 [2019-11-28 20:24:41,673 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 20:24:41,674 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:24:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 20:24:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-28 20:24:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 20:24:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-28 20:24:41,681 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 20 [2019-11-28 20:24:41,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:41,681 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-28 20:24:41,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 20:24:41,682 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-28 20:24:41,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:24:41,682 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:41,683 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2019-11-28 20:24:41,892 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:41,893 INFO L410 AbstractCegarLoop]: === Iteration 13 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:41,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1375099731, now seen corresponding path program 2 times [2019-11-28 20:24:41,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:41,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41544781] [2019-11-28 20:24:41,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:41,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41544781] [2019-11-28 20:24:41,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356322058] [2019-11-28 20:24:41,970 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:42,001 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:24:42,001 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:42,002 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 20:24:42,005 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:42,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:42,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-28 20:24:42,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235682527] [2019-11-28 20:24:42,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 20:24:42,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:42,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 20:24:42,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:24:42,016 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2019-11-28 20:24:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:42,134 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2019-11-28 20:24:42,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 20:24:42,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-11-28 20:24:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:42,135 INFO L225 Difference]: With dead ends: 43 [2019-11-28 20:24:42,135 INFO L226 Difference]: Without dead ends: 42 [2019-11-28 20:24:42,138 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:24:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-28 20:24:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2019-11-28 20:24:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 20:24:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-11-28 20:24:42,152 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 20 [2019-11-28 20:24:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:42,153 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-11-28 20:24:42,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 20:24:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-11-28 20:24:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-28 20:24:42,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:42,157 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:42,360 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:42,361 INFO L410 AbstractCegarLoop]: === Iteration 14 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash 511948884, now seen corresponding path program 2 times [2019-11-28 20:24:42,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:42,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124154230] [2019-11-28 20:24:42,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:42,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124154230] [2019-11-28 20:24:42,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720900163] [2019-11-28 20:24:42,464 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:42,494 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:24:42,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:42,496 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 20:24:42,498 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:42,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:42,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-28 20:24:42,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406439591] [2019-11-28 20:24:42,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 20:24:42,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:42,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 20:24:42,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-28 20:24:42,513 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2019-11-28 20:24:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:42,690 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2019-11-28 20:24:42,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-28 20:24:42,690 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2019-11-28 20:24:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:42,691 INFO L225 Difference]: With dead ends: 50 [2019-11-28 20:24:42,691 INFO L226 Difference]: Without dead ends: 49 [2019-11-28 20:24:42,692 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2019-11-28 20:24:42,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-28 20:24:42,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2019-11-28 20:24:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 20:24:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-11-28 20:24:42,699 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 26 [2019-11-28 20:24:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:42,699 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2019-11-28 20:24:42,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 20:24:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2019-11-28 20:24:42,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-28 20:24:42,701 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:42,701 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:42,911 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:42,915 INFO L410 AbstractCegarLoop]: === Iteration 15 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:42,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:42,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1009095738, now seen corresponding path program 3 times [2019-11-28 20:24:42,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:42,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612979608] [2019-11-28 20:24:42,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:43,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612979608] [2019-11-28 20:24:43,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132966422] [2019-11-28 20:24:43,016 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:43,051 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-28 20:24:43,052 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:43,053 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 20:24:43,054 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:43,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:43,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-28 20:24:43,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130255048] [2019-11-28 20:24:43,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 20:24:43,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:43,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 20:24:43,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:24:43,066 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 13 states. [2019-11-28 20:24:43,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:43,303 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2019-11-28 20:24:43,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-28 20:24:43,304 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2019-11-28 20:24:43,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:43,305 INFO L225 Difference]: With dead ends: 61 [2019-11-28 20:24:43,305 INFO L226 Difference]: Without dead ends: 60 [2019-11-28 20:24:43,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2019-11-28 20:24:43,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-28 20:24:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2019-11-28 20:24:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 20:24:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2019-11-28 20:24:43,320 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 32 [2019-11-28 20:24:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:43,321 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2019-11-28 20:24:43,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 20:24:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2019-11-28 20:24:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-28 20:24:43,328 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:43,328 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2019-11-28 20:24:43,531 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:43,535 INFO L410 AbstractCegarLoop]: === Iteration 16 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:43,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1872988191, now seen corresponding path program 3 times [2019-11-28 20:24:43,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:43,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951061437] [2019-11-28 20:24:43,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:43,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951061437] [2019-11-28 20:24:43,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331813724] [2019-11-28 20:24:43,655 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:43,693 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-28 20:24:43,694 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:43,695 INFO L264 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 20:24:43,698 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:43,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:43,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-28 20:24:43,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418837605] [2019-11-28 20:24:43,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 20:24:43,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:43,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 20:24:43,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:24:43,711 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 13 states. [2019-11-28 20:24:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:43,845 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2019-11-28 20:24:43,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 20:24:43,845 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2019-11-28 20:24:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:43,846 INFO L225 Difference]: With dead ends: 67 [2019-11-28 20:24:43,846 INFO L226 Difference]: Without dead ends: 66 [2019-11-28 20:24:43,847 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2019-11-28 20:24:43,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-28 20:24:43,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 42. [2019-11-28 20:24:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 20:24:43,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2019-11-28 20:24:43,854 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 32 [2019-11-28 20:24:43,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:43,855 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2019-11-28 20:24:43,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 20:24:43,855 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2019-11-28 20:24:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-28 20:24:43,857 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:43,857 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:44,068 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:44,069 INFO L410 AbstractCegarLoop]: === Iteration 17 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:44,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:44,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1485859744, now seen corresponding path program 4 times [2019-11-28 20:24:44,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:44,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650550328] [2019-11-28 20:24:44,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:44,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650550328] [2019-11-28 20:24:44,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802020766] [2019-11-28 20:24:44,218 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:44,260 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 20:24:44,260 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:44,261 INFO L264 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-28 20:24:44,263 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-28 20:24:44,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:44,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 15 [2019-11-28 20:24:44,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480858172] [2019-11-28 20:24:44,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-28 20:24:44,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:44,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-28 20:24:44,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-11-28 20:24:44,318 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 16 states. [2019-11-28 20:24:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:44,669 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2019-11-28 20:24:44,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-28 20:24:44,669 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2019-11-28 20:24:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:44,670 INFO L225 Difference]: With dead ends: 73 [2019-11-28 20:24:44,670 INFO L226 Difference]: Without dead ends: 72 [2019-11-28 20:24:44,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2019-11-28 20:24:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-28 20:24:44,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 48. [2019-11-28 20:24:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-28 20:24:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2019-11-28 20:24:44,682 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 38 [2019-11-28 20:24:44,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:44,683 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2019-11-28 20:24:44,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-28 20:24:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2019-11-28 20:24:44,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-28 20:24:44,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:44,684 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:44,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:44,885 INFO L410 AbstractCegarLoop]: === Iteration 18 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:44,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:44,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1828298374, now seen corresponding path program 5 times [2019-11-28 20:24:44,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:44,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470609762] [2019-11-28 20:24:44,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:45,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470609762] [2019-11-28 20:24:45,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610964607] [2019-11-28 20:24:45,049 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:45,085 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-28 20:24:45,086 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:45,086 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-28 20:24:45,088 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:45,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:45,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-28 20:24:45,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43515512] [2019-11-28 20:24:45,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 20:24:45,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:45,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 20:24:45,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-11-28 20:24:45,104 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2019-11-28 20:24:45,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:45,460 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2019-11-28 20:24:45,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-28 20:24:45,461 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2019-11-28 20:24:45,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:45,462 INFO L225 Difference]: With dead ends: 92 [2019-11-28 20:24:45,462 INFO L226 Difference]: Without dead ends: 91 [2019-11-28 20:24:45,463 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=879, Unknown=0, NotChecked=0, Total=1122 [2019-11-28 20:24:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-28 20:24:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 57. [2019-11-28 20:24:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-28 20:24:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2019-11-28 20:24:45,472 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 44 [2019-11-28 20:24:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:45,472 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2019-11-28 20:24:45,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 20:24:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2019-11-28 20:24:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-28 20:24:45,474 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:45,474 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1] [2019-11-28 20:24:45,682 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:45,682 INFO L410 AbstractCegarLoop]: === Iteration 19 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:45,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:45,683 INFO L82 PathProgramCache]: Analyzing trace with hash 123200235, now seen corresponding path program 4 times [2019-11-28 20:24:45,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:45,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401496367] [2019-11-28 20:24:45,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:45,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401496367] [2019-11-28 20:24:45,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069883936] [2019-11-28 20:24:45,855 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:45,882 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 20:24:45,882 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:45,883 INFO L264 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-28 20:24:45,886 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 10 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-28 20:24:45,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:45,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 21 [2019-11-28 20:24:45,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755917973] [2019-11-28 20:24:45,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-28 20:24:45,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:45,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-28 20:24:45,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2019-11-28 20:24:45,979 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 22 states. [2019-11-28 20:24:46,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:46,191 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2019-11-28 20:24:46,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 20:24:46,192 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2019-11-28 20:24:46,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:46,193 INFO L225 Difference]: With dead ends: 96 [2019-11-28 20:24:46,193 INFO L226 Difference]: Without dead ends: 57 [2019-11-28 20:24:46,194 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2019-11-28 20:24:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-28 20:24:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-11-28 20:24:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-28 20:24:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-11-28 20:24:46,202 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 44 [2019-11-28 20:24:46,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:46,202 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-11-28 20:24:46,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-28 20:24:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-11-28 20:24:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-28 20:24:46,203 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:46,204 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:46,407 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:46,408 INFO L410 AbstractCegarLoop]: === Iteration 20 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:46,408 INFO L82 PathProgramCache]: Analyzing trace with hash -319514926, now seen corresponding path program 6 times [2019-11-28 20:24:46,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:46,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067538943] [2019-11-28 20:24:46,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:46,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067538943] [2019-11-28 20:24:46,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860201335] [2019-11-28 20:24:46,596 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:46,632 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-11-28 20:24:46,632 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:46,634 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-28 20:24:46,637 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:46,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:46,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-11-28 20:24:46,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632416383] [2019-11-28 20:24:46,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-28 20:24:46,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:46,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-28 20:24:46,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-11-28 20:24:46,653 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 21 states. [2019-11-28 20:24:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:47,015 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2019-11-28 20:24:47,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-28 20:24:47,015 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2019-11-28 20:24:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:47,016 INFO L225 Difference]: With dead ends: 71 [2019-11-28 20:24:47,016 INFO L226 Difference]: Without dead ends: 70 [2019-11-28 20:24:47,017 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=1092, Unknown=0, NotChecked=0, Total=1406 [2019-11-28 20:24:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-28 20:24:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2019-11-28 20:24:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-28 20:24:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2019-11-28 20:24:47,025 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 56 [2019-11-28 20:24:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:47,025 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2019-11-28 20:24:47,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-28 20:24:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2019-11-28 20:24:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-28 20:24:47,026 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:47,026 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:47,229 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:47,230 INFO L410 AbstractCegarLoop]: === Iteration 21 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:47,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:47,230 INFO L82 PathProgramCache]: Analyzing trace with hash 52526366, now seen corresponding path program 7 times [2019-11-28 20:24:47,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:47,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536062864] [2019-11-28 20:24:47,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:47,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536062864] [2019-11-28 20:24:47,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091730809] [2019-11-28 20:24:47,654 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:47,699 INFO L264 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-28 20:24:47,702 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:47,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:47,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2019-11-28 20:24:47,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452160129] [2019-11-28 20:24:47,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-28 20:24:47,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:47,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-28 20:24:47,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2019-11-28 20:24:47,722 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 25 states. [2019-11-28 20:24:48,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:48,213 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2019-11-28 20:24:48,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-28 20:24:48,214 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 68 [2019-11-28 20:24:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:48,215 INFO L225 Difference]: With dead ends: 83 [2019-11-28 20:24:48,215 INFO L226 Difference]: Without dead ends: 82 [2019-11-28 20:24:48,216 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=1611, Unknown=0, NotChecked=0, Total=2070 [2019-11-28 20:24:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-28 20:24:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2019-11-28 20:24:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-28 20:24:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2019-11-28 20:24:48,227 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 68 [2019-11-28 20:24:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:48,228 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2019-11-28 20:24:48,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-28 20:24:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2019-11-28 20:24:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-28 20:24:48,229 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:48,229 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:48,442 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:48,442 INFO L410 AbstractCegarLoop]: === Iteration 22 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:48,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:48,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1106554518, now seen corresponding path program 8 times [2019-11-28 20:24:48,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:48,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782333661] [2019-11-28 20:24:48,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:48,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782333661] [2019-11-28 20:24:48,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037383184] [2019-11-28 20:24:48,831 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:48,869 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:24:48,869 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:48,870 INFO L264 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-28 20:24:48,871 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:48,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:48,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2019-11-28 20:24:48,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725502335] [2019-11-28 20:24:48,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-28 20:24:48,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:48,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-28 20:24:48,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2019-11-28 20:24:48,896 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 29 states. [2019-11-28 20:24:49,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:49,511 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2019-11-28 20:24:49,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-28 20:24:49,514 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 80 [2019-11-28 20:24:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:49,515 INFO L225 Difference]: With dead ends: 95 [2019-11-28 20:24:49,515 INFO L226 Difference]: Without dead ends: 94 [2019-11-28 20:24:49,516 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=632, Invalid=2230, Unknown=0, NotChecked=0, Total=2862 [2019-11-28 20:24:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-28 20:24:49,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2019-11-28 20:24:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-11-28 20:24:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2019-11-28 20:24:49,526 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 80 [2019-11-28 20:24:49,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:49,527 INFO L462 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2019-11-28 20:24:49,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-28 20:24:49,527 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2019-11-28 20:24:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-28 20:24:49,528 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:49,528 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:49,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:49,738 INFO L410 AbstractCegarLoop]: === Iteration 23 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:49,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:49,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1279454282, now seen corresponding path program 9 times [2019-11-28 20:24:49,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:49,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058252745] [2019-11-28 20:24:49,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 0 proven. 575 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:50,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058252745] [2019-11-28 20:24:50,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491913355] [2019-11-28 20:24:50,341 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:50,438 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2019-11-28 20:24:50,439 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:50,441 INFO L264 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-28 20:24:50,444 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 0 proven. 573 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 20:24:50,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:50,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 35 [2019-11-28 20:24:50,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094981884] [2019-11-28 20:24:50,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-28 20:24:50,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:50,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-28 20:24:50,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2019-11-28 20:24:50,538 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 36 states. [2019-11-28 20:24:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:51,496 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2019-11-28 20:24:51,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-28 20:24:51,498 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 92 [2019-11-28 20:24:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:51,499 INFO L225 Difference]: With dead ends: 119 [2019-11-28 20:24:51,499 INFO L226 Difference]: Without dead ends: 118 [2019-11-28 20:24:51,501 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1140, Invalid=3830, Unknown=0, NotChecked=0, Total=4970 [2019-11-28 20:24:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-11-28 20:24:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2019-11-28 20:24:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-11-28 20:24:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2019-11-28 20:24:51,513 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 92 [2019-11-28 20:24:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:51,514 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2019-11-28 20:24:51,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-28 20:24:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2019-11-28 20:24:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-28 20:24:51,515 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:51,516 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:51,718 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:51,719 INFO L410 AbstractCegarLoop]: === Iteration 24 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:51,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:51,720 INFO L82 PathProgramCache]: Analyzing trace with hash -853253554, now seen corresponding path program 10 times [2019-11-28 20:24:51,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:51,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067532133] [2019-11-28 20:24:51,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 0 proven. 955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:52,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067532133] [2019-11-28 20:24:52,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071721714] [2019-11-28 20:24:52,399 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:52,446 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 20:24:52,447 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:24:52,449 INFO L264 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 61 conjunts are in the unsatisfiable core [2019-11-28 20:24:52,451 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:24:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 10 proven. 682 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2019-11-28 20:24:52,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:24:52,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 15] total 51 [2019-11-28 20:24:52,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614469072] [2019-11-28 20:24:52,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-28 20:24:52,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:52,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-28 20:24:52,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=2221, Unknown=0, NotChecked=0, Total=2652 [2019-11-28 20:24:52,819 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 52 states. [2019-11-28 20:24:53,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:53,108 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2019-11-28 20:24:53,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 20:24:53,108 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 116 [2019-11-28 20:24:53,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:53,109 INFO L225 Difference]: With dead ends: 117 [2019-11-28 20:24:53,109 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:24:53,111 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2019-11-28 20:24:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:24:53,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:24:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:24:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:24:53,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2019-11-28 20:24:53,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:53,112 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:24:53,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-28 20:24:53,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:24:53,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:24:53,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:24:53,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 20:24:54,186 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2019-11-28 20:24:54,456 WARN L192 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 116 [2019-11-28 20:24:54,686 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2019-11-28 20:24:54,828 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2019-11-28 20:24:54,953 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-11-28 20:24:55,067 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-11-28 20:24:55,184 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2019-11-28 20:24:55,333 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 110 [2019-11-28 20:24:55,512 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 116 [2019-11-28 20:24:55,632 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2019-11-28 20:24:55,774 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 104 [2019-11-28 20:24:56,051 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 91 [2019-11-28 20:24:56,157 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 99 [2019-11-28 20:24:57,619 WARN L192 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 33 [2019-11-28 20:24:58,264 WARN L192 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 1 [2019-11-28 20:25:01,949 WARN L192 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 520 DAG size of output: 42 [2019-11-28 20:25:01,953 INFO L246 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-28 20:25:01,953 INFO L246 CegarLoopResult]: For program point fFINAL(lines 13 23) no Hoare annotation was computed. [2019-11-28 20:25:01,953 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-28 20:25:01,954 INFO L246 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-28 20:25:01,954 INFO L242 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (not (<= 0 |f_#in~x|))) (.cse1 (not (<= |f_#in~x| 2147483647)))) (and (or (not (<= 0 |f_#in~y|)) (not (<= |f_#in~y| 2147483647)) (and (not (= 0 f_~y)) (<= 0 f_~x) (<= f_~x 2147483647) (not (= 0 f_~x)) (<= f_~y 2147483647) (<= 0 f_~y)) .cse0 .cse1) (or (not (<= |f_#in~y| |f_#in~x|)) (= |f_#in~x| 0) (and (<= f_~y f_~x) (<= f_~x (+ f_~y 1))) .cse0 (not (<= |f_#in~x| (+ |f_#in~y| 1))) .cse1))) [2019-11-28 20:25:01,954 INFO L246 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-11-28 20:25:01,955 INFO L246 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-28 20:25:01,955 INFO L246 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-11-28 20:25:01,955 INFO L242 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (let ((.cse0 (not (<= 0 |f_#in~y|))) (.cse1 (not (<= |f_#in~y| 2147483647))) (.cse2 (not (<= |f_#in~x| 2147483647)))) (and (or .cse0 .cse1 (not (<= 1 |f_#in~x|)) .cse2) (or (and (not (= 0 f_~y)) (<= 0 f_~x) (<= f_~x (+ f_~y 1)) (<= f_~x 2147483646) (<= f_~y 2147483647) (<= 0 f_~y)) .cse0 .cse1 (not (<= 0 |f_#in~x|)) .cse2))) [2019-11-28 20:25:01,955 INFO L246 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2019-11-28 20:25:01,955 INFO L246 CegarLoopResult]: For program point L14(lines 14 22) no Hoare annotation was computed. [2019-11-28 20:25:01,956 INFO L246 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-28 20:25:01,956 INFO L246 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-28 20:25:01,956 INFO L246 CegarLoopResult]: For program point fEXIT(lines 13 23) no Hoare annotation was computed. [2019-11-28 20:25:01,956 INFO L249 CegarLoopResult]: At program point fENTRY(lines 13 23) the Hoare annotation is: true [2019-11-28 20:25:01,956 INFO L246 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-28 20:25:01,957 INFO L246 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-28 20:25:01,957 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 20:25:01,957 INFO L242 CegarLoopResult]: At program point L31(lines 25 32) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2019-11-28 20:25:01,957 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 20:25:01,957 INFO L242 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647) (<= 0 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~y~0)) [2019-11-28 20:25:01,958 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 20:25:01,958 INFO L246 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2019-11-28 20:25:01,958 INFO L246 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2019-11-28 20:25:01,958 INFO L246 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2019-11-28 20:25:01,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:25:01 BoogieIcfgContainer [2019-11-28 20:25:01,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:25:01,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:25:01,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:25:01,974 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:25:01,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:37" (3/4) ... [2019-11-28 20:25:01,979 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:25:01,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2019-11-28 20:25:01,990 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 20:25:01,990 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 20:25:02,032 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:25:02,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:25:02,034 INFO L168 Benchmark]: Toolchain (without parser) took 25678.75 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 431.0 MB). Free memory was 961.7 MB in the beginning and 1.3 GB in the end (delta: -326.7 MB). Peak memory consumption was 104.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:25:02,034 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:25:02,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.55 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:25:02,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.46 ms. Allocated memory is still 1.0 GB. Free memory is still 951.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:25:02,036 INFO L168 Benchmark]: Boogie Preprocessor took 83.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -201.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:25:02,036 INFO L168 Benchmark]: RCFGBuilder took 261.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:25:02,037 INFO L168 Benchmark]: TraceAbstraction took 24949.01 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 269.5 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -149.5 MB). Peak memory consumption was 546.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:25:02,037 INFO L168 Benchmark]: Witness Printer took 58.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 433.8 kB). Peak memory consumption was 433.8 kB. Max. memory is 11.5 GB. [2019-11-28 20:25:02,040 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.55 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.46 ms. Allocated memory is still 1.0 GB. Free memory is still 951.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -201.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 261.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24949.01 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 269.5 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -149.5 MB). Peak memory consumption was 546.8 MB. Max. memory is 11.5 GB. * Witness Printer took 58.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 433.8 kB). Peak memory consumption was 433.8 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 4 error locations. Result: SAFE, OverallTime: 16.2s, OverallIterations: 24, TraceHistogramMax: 19, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.6s, HoareTripleCheckerStatistics: 286 SDtfs, 1294 SDslu, 1208 SDs, 0 SdLazy, 2569 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1258 GetRequests, 729 SyntacticMatches, 5 SemanticMatches, 524 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4132 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 261 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 89 PreInvPairs, 89 NumberOfFragments, 144 HoareAnnotationTreeSize, 89 FomulaSimplifications, 38139358 FormulaSimplificationTreeSizeReduction, 3.6s HoareSimplificationTime, 5 FomulaSimplificationsInter, 5999924 FormulaSimplificationTreeSizeReductionInter, 4.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1553 NumberOfCodeBlocks, 1553 NumberOfCodeBlocksAsserted, 86 NumberOfCheckSat, 1510 ConstructedInterpolants, 0 QuantifiedInterpolants, 424429 SizeOfPredicates, 121 NumberOfNonLiveVariables, 1919 ConjunctsInSsa, 300 ConjunctsInUnsatCore, 43 InterpolantComputations, 7 PerfectInterpolantSequences, 364/5819 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...