./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.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/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.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 500cb8735f650eb0e7c33062ddc23c2166b17f19 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 18:30:49,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:30:49,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:30:49,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:30:49,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:30:49,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:30:49,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:30:49,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:30:49,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:30:49,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:30:49,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:30:49,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:30:49,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:30:49,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:30:49,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:30:49,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:30:49,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:30:49,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:30:49,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:30:49,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:30:49,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:30:49,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:30:49,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:30:49,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:30:49,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:30:49,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:30:49,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:30:49,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:30:49,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:30:49,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:30:49,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:30:49,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:30:49,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:30:49,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:30:49,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:30:49,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:30:49,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:30:49,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:30:49,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:30:49,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:30:49,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:30:49,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:30:49,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:30:49,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:30:49,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:30:49,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:30:49,600 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:30:49,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:30:49,601 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:30:49,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:30:49,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:30:49,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:30:49,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:30:49,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:30:49,603 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:30:49,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:30:49,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:30:49,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:30:49,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:30:49,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:30:49,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:30:49,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:30:49,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:30:49,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:30:49,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:30:49,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:30:49,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:30:49,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:30:49,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:30:49,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:30:49,608 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 -> 500cb8735f650eb0e7c33062ddc23c2166b17f19 [2020-10-19 18:30:49,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:30:49,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:30:49,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:30:49,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:30:49,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:30:49,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2020-10-19 18:30:50,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6568d081e/fcfd79e7d26d483da0da47edc4e4afd6/FLAGaa8a82ff4 [2020-10-19 18:30:50,530 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:30:50,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2020-10-19 18:30:50,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6568d081e/fcfd79e7d26d483da0da47edc4e4afd6/FLAGaa8a82ff4 [2020-10-19 18:30:50,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6568d081e/fcfd79e7d26d483da0da47edc4e4afd6 [2020-10-19 18:30:50,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:30:50,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:30:50,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:30:50,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:30:50,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:30:50,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:30:50" (1/1) ... [2020-10-19 18:30:50,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142af33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:50, skipping insertion in model container [2020-10-19 18:30:50,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:30:50" (1/1) ... [2020-10-19 18:30:50,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:30:50,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:30:51,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:30:51,162 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:30:51,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:30:51,208 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:30:51,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51 WrapperNode [2020-10-19 18:30:51,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:30:51,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:30:51,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:30:51,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:30:51,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (1/1) ... [2020-10-19 18:30:51,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (1/1) ... [2020-10-19 18:30:51,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:30:51,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:30:51,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:30:51,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:30:51,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (1/1) ... [2020-10-19 18:30:51,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (1/1) ... [2020-10-19 18:30:51,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (1/1) ... [2020-10-19 18:30:51,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (1/1) ... [2020-10-19 18:30:51,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (1/1) ... [2020-10-19 18:30:51,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (1/1) ... [2020-10-19 18:30:51,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (1/1) ... [2020-10-19 18:30:51,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:30:51,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:30:51,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:30:51,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:30:51,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (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 18:30:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:30:51,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:30:51,718 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:30:51,718 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:30:51,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:30:51 BoogieIcfgContainer [2020-10-19 18:30:51,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:30:51,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:30:51,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:30:51,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:30:51,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:30:50" (1/3) ... [2020-10-19 18:30:51,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533e7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:30:51, skipping insertion in model container [2020-10-19 18:30:51,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:30:51" (2/3) ... [2020-10-19 18:30:51,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533e7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:30:51, skipping insertion in model container [2020-10-19 18:30:51,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:30:51" (3/3) ... [2020-10-19 18:30:51,730 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2020-10-19 18:30:51,743 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:30:51,751 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-19 18:30:51,768 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-19 18:30:51,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:30:51,800 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:30:51,800 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:30:51,801 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:30:51,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:30:51,802 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:30:51,802 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:30:51,803 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:30:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-19 18:30:51,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-19 18:30:51,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:51,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-19 18:30:51,842 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:51,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:51,850 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2020-10-19 18:30:51,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:51,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800466913] [2020-10-19 18:30:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:52,040 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 18:30:52,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800466913] [2020-10-19 18:30:52,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:52,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:30:52,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525561217] [2020-10-19 18:30:52,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:30:52,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:52,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:30:52,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:30:52,065 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-10-19 18:30:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:52,114 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-10-19 18:30:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:30:52,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-19 18:30:52,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:52,125 INFO L225 Difference]: With dead ends: 29 [2020-10-19 18:30:52,126 INFO L226 Difference]: Without dead ends: 16 [2020-10-19 18:30:52,129 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 18:30:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-19 18:30:52,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-19 18:30:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-19 18:30:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-10-19 18:30:52,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2020-10-19 18:30:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:52,163 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-10-19 18:30:52,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:30:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-10-19 18:30:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-19 18:30:52,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:52,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-19 18:30:52,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:30:52,166 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:52,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:52,166 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-10-19 18:30:52,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:52,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682345952] [2020-10-19 18:30:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:52,197 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 18:30:52,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682345952] [2020-10-19 18:30:52,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:52,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:30:52,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291183723] [2020-10-19 18:30:52,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:30:52,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:52,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:30:52,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:30:52,201 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-10-19 18:30:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:52,224 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-10-19 18:30:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:30:52,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-19 18:30:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:52,226 INFO L225 Difference]: With dead ends: 30 [2020-10-19 18:30:52,226 INFO L226 Difference]: Without dead ends: 17 [2020-10-19 18:30:52,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:30:52,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-19 18:30:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-19 18:30:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-19 18:30:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-19 18:30:52,233 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2020-10-19 18:30:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:52,233 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-19 18:30:52,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:30:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-19 18:30:52,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 18:30:52,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:52,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 18:30:52,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:30:52,235 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:52,235 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2020-10-19 18:30:52,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:52,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884017416] [2020-10-19 18:30:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:52,261 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 18:30:52,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884017416] [2020-10-19 18:30:52,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:52,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:30:52,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983192389] [2020-10-19 18:30:52,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:30:52,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:52,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:30:52,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:30:52,263 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2020-10-19 18:30:52,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:52,283 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-10-19 18:30:52,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:30:52,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-19 18:30:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:52,285 INFO L225 Difference]: With dead ends: 17 [2020-10-19 18:30:52,285 INFO L226 Difference]: Without dead ends: 16 [2020-10-19 18:30:52,285 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 18:30:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-19 18:30:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-19 18:30:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-19 18:30:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-19 18:30:52,290 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2020-10-19 18:30:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:52,290 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-19 18:30:52,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:30:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-10-19 18:30:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:30:52,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:52,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-19 18:30:52,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:30:52,292 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:52,293 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2020-10-19 18:30:52,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:52,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761413954] [2020-10-19 18:30:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:52,336 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 18:30:52,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761413954] [2020-10-19 18:30:52,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717511041] [2020-10-19 18:30:52,337 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 18:30:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:52,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:30:52,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:30:52,415 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 18:30:52,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:30:52,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-19 18:30:52,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136208815] [2020-10-19 18:30:52,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:30:52,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:52,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:30:52,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:30:52,419 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-10-19 18:30:52,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:52,454 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-19 18:30:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:30:52,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-19 18:30:52,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:52,456 INFO L225 Difference]: With dead ends: 22 [2020-10-19 18:30:52,456 INFO L226 Difference]: Without dead ends: 21 [2020-10-19 18:30:52,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:30:52,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-19 18:30:52,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-19 18:30:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 18:30:52,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-19 18:30:52,462 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2020-10-19 18:30:52,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:52,462 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-19 18:30:52,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:30:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-19 18:30:52,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:30:52,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:52,463 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:30:52,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:30:52,665 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:52,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:52,666 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2020-10-19 18:30:52,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:52,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075996978] [2020-10-19 18:30:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:30:52,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075996978] [2020-10-19 18:30:52,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:52,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:30:52,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637213979] [2020-10-19 18:30:52,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:30:52,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:52,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:30:52,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:30:52,727 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2020-10-19 18:30:52,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:52,754 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-10-19 18:30:52,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:30:52,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-19 18:30:52,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:52,756 INFO L225 Difference]: With dead ends: 33 [2020-10-19 18:30:52,756 INFO L226 Difference]: Without dead ends: 32 [2020-10-19 18:30:52,757 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 18:30:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-19 18:30:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-19 18:30:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-19 18:30:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-19 18:30:52,764 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 9 [2020-10-19 18:30:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:52,764 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-19 18:30:52,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:30:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-19 18:30:52,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:30:52,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:52,765 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:30:52,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:30:52,766 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:52,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:52,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1897256205, now seen corresponding path program 1 times [2020-10-19 18:30:52,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:52,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424561858] [2020-10-19 18:30:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:30:52,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424561858] [2020-10-19 18:30:52,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:30:52,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:30:52,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298403924] [2020-10-19 18:30:52,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:30:52,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:52,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:30:52,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:30:52,795 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2020-10-19 18:30:52,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:52,808 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-10-19 18:30:52,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:30:52,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-19 18:30:52,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:52,809 INFO L225 Difference]: With dead ends: 30 [2020-10-19 18:30:52,810 INFO L226 Difference]: Without dead ends: 29 [2020-10-19 18:30:52,810 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 18:30:52,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-19 18:30:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-19 18:30:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 18:30:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-19 18:30:52,816 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 10 [2020-10-19 18:30:52,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:52,817 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-19 18:30:52,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:30:52,817 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-19 18:30:52,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 18:30:52,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:52,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-10-19 18:30:52,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:30:52,818 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:52,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:52,819 INFO L82 PathProgramCache]: Analyzing trace with hash 432560224, now seen corresponding path program 2 times [2020-10-19 18:30:52,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:52,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507920753] [2020-10-19 18:30:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-19 18:30:52,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507920753] [2020-10-19 18:30:52,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398491508] [2020-10-19 18:30:52,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 18:30:52,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 18:30:52,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:30:52,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:30:52,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:30:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-19 18:30:52,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:30:52,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-19 18:30:52,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9986681] [2020-10-19 18:30:52,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:30:52,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:52,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:30:52,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:30:52,949 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2020-10-19 18:30:53,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:53,008 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-10-19 18:30:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:30:53,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-19 18:30:53,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:53,009 INFO L225 Difference]: With dead ends: 29 [2020-10-19 18:30:53,009 INFO L226 Difference]: Without dead ends: 28 [2020-10-19 18:30:53,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:30:53,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-19 18:30:53,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2020-10-19 18:30:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-19 18:30:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-19 18:30:53,015 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2020-10-19 18:30:53,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:53,015 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-19 18:30:53,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:30:53,016 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-10-19 18:30:53,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 18:30:53,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:53,016 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:30:53,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:30:53,229 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:53,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:53,230 INFO L82 PathProgramCache]: Analyzing trace with hash 610055194, now seen corresponding path program 1 times [2020-10-19 18:30:53,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:53,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67115184] [2020-10-19 18:30:53,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:30:53,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67115184] [2020-10-19 18:30:53,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478135711] [2020-10-19 18:30:53,278 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) [2020-10-19 18:30:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:53,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:30:53,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:30:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:30:53,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:30:53,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2020-10-19 18:30:53,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442724611] [2020-10-19 18:30:53,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:30:53,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:53,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:30:53,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:30:53,340 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-10-19 18:30:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:53,476 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-10-19 18:30:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:30:53,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-19 18:30:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:53,478 INFO L225 Difference]: With dead ends: 34 [2020-10-19 18:30:53,478 INFO L226 Difference]: Without dead ends: 27 [2020-10-19 18:30:53,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:30:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-19 18:30:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-19 18:30:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-19 18:30:53,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-19 18:30:53,486 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2020-10-19 18:30:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:53,487 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-19 18:30:53,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:30:53,487 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-19 18:30:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:30:53,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:30:53,488 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2020-10-19 18:30:53,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:30:53,703 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:30:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:30:53,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1201123269, now seen corresponding path program 2 times [2020-10-19 18:30:53,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:30:53,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210500866] [2020-10-19 18:30:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:30:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:30:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-19 18:30:53,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210500866] [2020-10-19 18:30:53,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756206101] [2020-10-19 18:30:53,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 18:30:53,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 18:30:53,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:30:53,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:30:53,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:30:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-19 18:30:53,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:30:53,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-10-19 18:30:53,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613460135] [2020-10-19 18:30:53,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:30:53,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:30:53,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:30:53,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:30:53,850 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2020-10-19 18:30:53,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:30:53,868 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-10-19 18:30:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:30:53,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-19 18:30:53,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:30:53,871 INFO L225 Difference]: With dead ends: 26 [2020-10-19 18:30:53,871 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:30:53,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:30:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:30:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:30:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:30:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:30:53,872 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-19 18:30:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:30:53,873 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:30:53,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:30:53,873 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:30:53,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:30:54,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:30:54,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 18:30:54,174 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-19 18:30:54,175 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 18:30:54,175 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-10-19 18:30:54,175 INFO L277 CegarLoopResult]: At program point L29(lines 13 30) the Hoare annotation is: true [2020-10-19 18:30:54,175 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-19 18:30:54,175 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-10-19 18:30:54,175 INFO L274 CegarLoopResult]: For program point L21(lines 21 26) no Hoare annotation was computed. [2020-10-19 18:30:54,176 INFO L270 CegarLoopResult]: At program point L21-2(lines 20 27) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse3 (<= ULTIMATE.start_main_~m~0 2147483646))) (or (and .cse0 .cse1 .cse2 (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~m~0) .cse3) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 2147483646) .cse2 (<= 1 ULTIMATE.start_main_~m~0) .cse3))) [2020-10-19 18:30:54,176 INFO L274 CegarLoopResult]: For program point L17(lines 17 28) no Hoare annotation was computed. [2020-10-19 18:30:54,176 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2020-10-19 18:30:54,177 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-19 18:30:54,177 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-10-19 18:30:54,177 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 18:30:54,177 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 18:30:54,177 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-10-19 18:30:54,177 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-19 18:30:54,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:30:54 BoogieIcfgContainer [2020-10-19 18:30:54,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:30:54,198 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:30:54,198 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:30:54,198 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:30:54,199 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:30:51" (3/4) ... [2020-10-19 18:30:54,203 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:30:54,215 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-19 18:30:54,215 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:30:54,265 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:30:54,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:30:54,268 INFO L168 Benchmark]: Toolchain (without parser) took 3349.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 960.0 MB in the beginning and 980.1 MB in the end (delta: -20.2 MB). Peak memory consumption was 128.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:54,269 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:30:54,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.91 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:54,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.04 ms. Allocated memory is still 1.0 GB. Free memory is still 949.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:30:54,271 INFO L168 Benchmark]: Boogie Preprocessor took 136.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -188.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:54,272 INFO L168 Benchmark]: RCFGBuilder took 321.81 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:54,272 INFO L168 Benchmark]: TraceAbstraction took 2475.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.1 MB in the end (delta: 144.2 MB). Peak memory consumption was 144.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:30:54,273 INFO L168 Benchmark]: Witness Printer took 68.04 ms. Allocated memory is still 1.2 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:30:54,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.91 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 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 51.04 ms. Allocated memory is still 1.0 GB. Free memory is still 949.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 136.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -188.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 321.81 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2475.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.1 MB in the end (delta: 144.2 MB). Peak memory consumption was 144.2 MB. Max. memory is 11.5 GB. * Witness Printer took 68.04 ms. Allocated memory is still 1.2 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((0 <= i && 0 <= j) && n <= 2147483647) && j + 1 <= m) && m <= 2147483646) || (((((0 <= i && 0 <= j) && i <= 2147483646) && n <= 2147483647) && 1 <= m) && m <= 2147483646) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 77 SDslu, 18 SDs, 0 SdLazy, 97 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, 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, 9 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 39 HoareAnnotationTreeSize, 2 FomulaSimplifications, 288 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 155 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 6114 SizeOfPredicates, 3 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 79/124 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...