./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 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-Ex4.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 554582d6fc3de8e87f5dd30e5019302b6e1b96be ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:32:29,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:32:29,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:32:29,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:32:29,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:32:29,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:32:29,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:32:29,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:32:29,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:32:29,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:32:29,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:32:29,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:32:29,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:32:29,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:32:29,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:32:29,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:32:29,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:32:29,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:32:29,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:32:29,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:32:29,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:32:29,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:32:29,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:32:29,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:32:29,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:32:29,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:32:29,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:32:29,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:32:29,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:32:29,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:32:29,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:32:29,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:32:29,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:32:29,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:32:29,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:32:29,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:32:29,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:32:29,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:32:29,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:32:29,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:32:29,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:32:29,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:32:29,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:32:29,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:32:29,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:32:29,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:32:29,754 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:32:29,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:32:29,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:32:29,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:32:29,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:32:29,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:32:29,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:32:29,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:32:29,756 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:32:29,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:32:29,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:32:29,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:32:29,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:32:29,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:32:29,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:32:29,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:32:29,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:32:29,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:32:29,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:32:29,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:32:29,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:32:29,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:32:29,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:32:29,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:32:29,761 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 -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2020-10-19 18:32:30,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:32:30,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:32:30,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:32:30,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:32:30,074 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:32:30,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2020-10-19 18:32:30,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5142db09/4e7e3826f309433bacec65c428874791/FLAGd93cc879b [2020-10-19 18:32:30,557 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:32:30,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2020-10-19 18:32:30,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5142db09/4e7e3826f309433bacec65c428874791/FLAGd93cc879b [2020-10-19 18:32:30,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5142db09/4e7e3826f309433bacec65c428874791 [2020-10-19 18:32:30,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:32:30,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:32:30,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:32:30,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:32:30,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:32:30,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:32:30" (1/1) ... [2020-10-19 18:32:30,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392398e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:30, skipping insertion in model container [2020-10-19 18:32:30,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:32:30" (1/1) ... [2020-10-19 18:32:30,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:32:31,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:32:31,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:32:31,211 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:32:31,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:32:31,241 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:32:31,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31 WrapperNode [2020-10-19 18:32:31,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:32:31,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:32:31,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:32:31,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:32:31,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (1/1) ... [2020-10-19 18:32:31,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (1/1) ... [2020-10-19 18:32:31,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:32:31,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:32:31,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:32:31,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:32:31,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (1/1) ... [2020-10-19 18:32:31,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (1/1) ... [2020-10-19 18:32:31,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (1/1) ... [2020-10-19 18:32:31,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (1/1) ... [2020-10-19 18:32:31,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (1/1) ... [2020-10-19 18:32:31,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (1/1) ... [2020-10-19 18:32:31,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (1/1) ... [2020-10-19 18:32:31,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:32:31,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:32:31,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:32:31,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:32:31,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:32:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure p [2020-10-19 18:32:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2020-10-19 18:32:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:32:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:32:31,608 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:32:31,609 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:32:31,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:31 BoogieIcfgContainer [2020-10-19 18:32:31,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:32:31,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:32:31,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:32:31,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:32:31,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:32:30" (1/3) ... [2020-10-19 18:32:31,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367eb028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:32:31, skipping insertion in model container [2020-10-19 18:32:31,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:31" (2/3) ... [2020-10-19 18:32:31,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367eb028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:32:31, skipping insertion in model container [2020-10-19 18:32:31,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:31" (3/3) ... [2020-10-19 18:32:31,622 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2020-10-19 18:32:31,636 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:32:31,648 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-19 18:32:31,667 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-19 18:32:31,700 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:32:31,700 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:32:31,700 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:32:31,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:32:31,701 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:32:31,701 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:32:31,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:32:31,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:32:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-19 18:32:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 18:32:31,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:31,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 18:32:31,730 INFO L429 AbstractCegarLoop]: === Iteration 1 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:31,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:31,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1571177437, now seen corresponding path program 1 times [2020-10-19 18:32:31,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:31,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823865110] [2020-10-19 18:32:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:31,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823865110] [2020-10-19 18:32:31,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:31,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:32:31,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000180204] [2020-10-19 18:32:31,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:32:31,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:31,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:32:31,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:32:31,967 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-10-19 18:32:32,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:32,110 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-10-19 18:32:32,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:32:32,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-10-19 18:32:32,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:32,120 INFO L225 Difference]: With dead ends: 44 [2020-10-19 18:32:32,121 INFO L226 Difference]: Without dead ends: 28 [2020-10-19 18:32:32,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:32:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-19 18:32:32,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2020-10-19 18:32:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-19 18:32:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-19 18:32:32,158 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2020-10-19 18:32:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:32,159 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-19 18:32:32,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:32:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-19 18:32:32,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:32:32,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:32,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:32,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:32:32,161 INFO L429 AbstractCegarLoop]: === Iteration 2 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:32,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1461860328, now seen corresponding path program 1 times [2020-10-19 18:32:32,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:32,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835551895] [2020-10-19 18:32:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:32,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835551895] [2020-10-19 18:32:32,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:32,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:32:32,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987341915] [2020-10-19 18:32:32,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:32:32,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:32,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:32:32,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:32,203 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-10-19 18:32:32,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:32,218 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-10-19 18:32:32,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:32:32,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-19 18:32:32,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:32,220 INFO L225 Difference]: With dead ends: 19 [2020-10-19 18:32:32,220 INFO L226 Difference]: Without dead ends: 18 [2020-10-19 18:32:32,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:32,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-19 18:32:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-19 18:32:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 18:32:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-19 18:32:32,227 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2020-10-19 18:32:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:32,227 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-19 18:32:32,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:32:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-19 18:32:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:32:32,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:32,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:32,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:32:32,229 INFO L429 AbstractCegarLoop]: === Iteration 3 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:32,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:32,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1461867311, now seen corresponding path program 1 times [2020-10-19 18:32:32,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:32,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881986196] [2020-10-19 18:32:32,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:32,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881986196] [2020-10-19 18:32:32,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:32,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:32:32,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711508782] [2020-10-19 18:32:32,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:32:32,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:32,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:32:32,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:32:32,287 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-10-19 18:32:32,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:32,343 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-19 18:32:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:32:32,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-19 18:32:32,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:32,345 INFO L225 Difference]: With dead ends: 30 [2020-10-19 18:32:32,345 INFO L226 Difference]: Without dead ends: 29 [2020-10-19 18:32:32,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:32:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-19 18:32:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-10-19 18:32:32,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 18:32:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-19 18:32:32,354 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2020-10-19 18:32:32,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:32,354 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-19 18:32:32,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:32:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-19 18:32:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:32:32,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:32,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:32,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:32:32,357 INFO L429 AbstractCegarLoop]: === Iteration 4 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:32,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:32,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1926753568, now seen corresponding path program 1 times [2020-10-19 18:32:32,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:32,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096509286] [2020-10-19 18:32:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:32,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096509286] [2020-10-19 18:32:32,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:32,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:32:32,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574335513] [2020-10-19 18:32:32,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:32:32,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:32,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:32:32,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:32,393 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2020-10-19 18:32:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:32,405 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-10-19 18:32:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:32:32,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-19 18:32:32,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:32,407 INFO L225 Difference]: With dead ends: 24 [2020-10-19 18:32:32,407 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 18:32:32,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 18:32:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-19 18:32:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 18:32:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-19 18:32:32,415 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2020-10-19 18:32:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:32,416 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-19 18:32:32,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:32:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-19 18:32:32,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:32:32,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:32,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:32,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:32:32,418 INFO L429 AbstractCegarLoop]: === Iteration 5 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:32,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:32,419 INFO L82 PathProgramCache]: Analyzing trace with hash 168982822, now seen corresponding path program 1 times [2020-10-19 18:32:32,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:32,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105921160] [2020-10-19 18:32:32,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:32,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105921160] [2020-10-19 18:32:32,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128712714] [2020-10-19 18:32:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:32,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:32:32,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:32,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:32,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-19 18:32:32,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796427467] [2020-10-19 18:32:32,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:32:32,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:32,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:32:32,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:32:32,644 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2020-10-19 18:32:32,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:32,771 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-19 18:32:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:32:32,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-19 18:32:32,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:32,773 INFO L225 Difference]: With dead ends: 45 [2020-10-19 18:32:32,773 INFO L226 Difference]: Without dead ends: 43 [2020-10-19 18:32:32,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:32:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-19 18:32:32,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2020-10-19 18:32:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 18:32:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-19 18:32:32,782 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2020-10-19 18:32:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:32,783 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-19 18:32:32,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:32:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-19 18:32:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:32:32,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:32,784 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:32,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:32,998 INFO L429 AbstractCegarLoop]: === Iteration 6 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:32,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:32,998 INFO L82 PathProgramCache]: Analyzing trace with hash 943507206, now seen corresponding path program 1 times [2020-10-19 18:32:32,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:32,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987456231] [2020-10-19 18:32:32,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:33,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987456231] [2020-10-19 18:32:33,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201138066] [2020-10-19 18:32:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:33,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:32:33,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:33,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:33,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-19 18:32:33,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080041979] [2020-10-19 18:32:33,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:32:33,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:33,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:32:33,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:32:33,119 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 7 states. [2020-10-19 18:32:33,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:33,226 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-19 18:32:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:32:33,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-19 18:32:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:33,228 INFO L225 Difference]: With dead ends: 67 [2020-10-19 18:32:33,228 INFO L226 Difference]: Without dead ends: 65 [2020-10-19 18:32:33,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:32:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-19 18:32:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 33. [2020-10-19 18:32:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-19 18:32:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-19 18:32:33,239 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2020-10-19 18:32:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:33,239 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-19 18:32:33,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:32:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-19 18:32:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:32:33,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:33,241 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:33,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:33,456 INFO L429 AbstractCegarLoop]: === Iteration 7 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:33,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:33,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1019019044, now seen corresponding path program 1 times [2020-10-19 18:32:33,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:33,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609742079] [2020-10-19 18:32:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:33,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609742079] [2020-10-19 18:32:33,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241634086] [2020-10-19 18:32:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:33,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:32:33,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:33,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:33,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-19 18:32:33,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068424852] [2020-10-19 18:32:33,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:32:33,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:33,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:32:33,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:32:33,596 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2020-10-19 18:32:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:33,694 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-10-19 18:32:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:32:33,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-19 18:32:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:33,696 INFO L225 Difference]: With dead ends: 53 [2020-10-19 18:32:33,696 INFO L226 Difference]: Without dead ends: 52 [2020-10-19 18:32:33,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:32:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-19 18:32:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2020-10-19 18:32:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 18:32:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-19 18:32:33,706 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 12 [2020-10-19 18:32:33,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:33,707 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-19 18:32:33,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:32:33,707 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-19 18:32:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:32:33,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:33,709 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:33,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:33,928 INFO L429 AbstractCegarLoop]: === Iteration 8 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:33,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1112438587, now seen corresponding path program 1 times [2020-10-19 18:32:33,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:33,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142294855] [2020-10-19 18:32:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:34,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142294855] [2020-10-19 18:32:34,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600411429] [2020-10-19 18:32:34,029 INFO L95 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:34,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:32:34,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:34,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:34,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-19 18:32:34,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495907400] [2020-10-19 18:32:34,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:32:34,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:34,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:32:34,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:32:34,089 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 9 states. [2020-10-19 18:32:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:34,333 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-10-19 18:32:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:32:34,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-19 18:32:34,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:34,334 INFO L225 Difference]: With dead ends: 47 [2020-10-19 18:32:34,335 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:32:34,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:32:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:32:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:32:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:32:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:32:34,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-19 18:32:34,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:34,338 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:32:34,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:32:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:32:34,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:32:34,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:34,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 18:32:34,901 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2020-10-19 18:32:34,983 INFO L274 CegarLoopResult]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2020-10-19 18:32:34,983 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-10-19 18:32:34,983 INFO L274 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-10-19 18:32:34,983 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-10-19 18:32:34,984 INFO L277 CegarLoopResult]: At program point pENTRY(lines 12 22) the Hoare annotation is: true [2020-10-19 18:32:34,984 INFO L270 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or (not (<= |p_#in~n| 2147483647)) (and (<= p_~n 2147483647) (<= p_~r 2147483647) (<= 1 p_~n) (<= p_~m 2147483647)) .cse0 .cse1) (or .cse0 .cse1 (not (<= |p_#in~n| 2147483646)) (<= p_~n 2147483646)))) [2020-10-19 18:32:34,984 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-19 18:32:34,984 INFO L274 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-10-19 18:32:34,984 INFO L274 CegarLoopResult]: For program point L13(lines 13 21) no Hoare annotation was computed. [2020-10-19 18:32:34,984 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-10-19 18:32:34,985 INFO L274 CegarLoopResult]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-10-19 18:32:34,985 INFO L270 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or (not (<= |p_#in~n| 2147483647)) .cse0 (and (<= p_~r 2147483647) (<= p_~n 2147483647) (<= p_~m 2147483647) (<= 1 p_~r)) .cse1) (or .cse0 .cse1 (not (<= |p_#in~n| 2147483646)) (<= p_~n 2147483646)))) [2020-10-19 18:32:34,989 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-10-19 18:32:34,990 INFO L274 CegarLoopResult]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-10-19 18:32:34,990 INFO L274 CegarLoopResult]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-19 18:32:34,990 INFO L274 CegarLoopResult]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-19 18:32:34,991 INFO L274 CegarLoopResult]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2020-10-19 18:32:34,991 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 18:32:34,992 INFO L270 CegarLoopResult]: At program point L31(lines 24 32) the Hoare annotation is: (<= ULTIMATE.start_main_~r~0 2147483647) [2020-10-19 18:32:34,992 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 18:32:34,992 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~r~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-10-19 18:32:34,993 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 18:32:34,993 INFO L274 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-10-19 18:32:34,993 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-10-19 18:32:34,993 INFO L274 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2020-10-19 18:32:35,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:32:35 BoogieIcfgContainer [2020-10-19 18:32:35,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:32:35,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:32:35,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:32:35,014 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:32:35,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:31" (3/4) ... [2020-10-19 18:32:35,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:32:35,024 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2020-10-19 18:32:35,029 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-19 18:32:35,029 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-19 18:32:35,074 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:32:35,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:32:35,077 INFO L168 Benchmark]: Toolchain (without parser) took 4112.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 950.6 MB in the beginning and 854.1 MB in the end (delta: 96.5 MB). Peak memory consumption was 237.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:35,077 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:32:35,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.41 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:35,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.77 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:32:35,079 INFO L168 Benchmark]: Boogie Preprocessor took 80.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -190.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:35,080 INFO L168 Benchmark]: RCFGBuilder took 261.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:35,080 INFO L168 Benchmark]: TraceAbstraction took 3399.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 860.7 MB in the end (delta: 251.6 MB). Peak memory consumption was 251.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:35,081 INFO L168 Benchmark]: Witness Printer took 61.42 ms. Allocated memory is still 1.2 GB. Free memory was 860.7 MB in the beginning and 854.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:35,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 271.41 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.77 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 80.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -190.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 261.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3399.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 860.7 MB in the end (delta: 251.6 MB). Peak memory consumption was 251.6 MB. Max. memory is 11.5 GB. * Witness Printer took 61.42 ms. Allocated memory is still 1.2 GB. Free memory was 860.7 MB in the beginning and 854.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: r <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 199 SDslu, 230 SDs, 0 SdLazy, 349 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 71 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 29 PreInvPairs, 29 NumberOfFragments, 100 HoareAnnotationTreeSize, 29 FomulaSimplifications, 2229 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 5 FomulaSimplificationsInter, 278 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4106 SizeOfPredicates, 9 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 0/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...