./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 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.0-5485861 [2020-10-26 04:04:04,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:04:04,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:04:04,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:04:04,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:04:04,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:04:04,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:04:04,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:04:04,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:04:04,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:04:04,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:04:04,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:04:04,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:04:04,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:04:04,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:04:04,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:04:04,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:04:04,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:04:04,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:04:04,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:04:04,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:04:04,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:04:04,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:04:04,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:04:04,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:04:04,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:04:04,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:04:04,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:04:04,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:04:04,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:04:04,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:04:04,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:04:04,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:04:04,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:04:04,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:04:04,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:04:04,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:04:04,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:04:04,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:04:04,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:04:04,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:04:04,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-26 04:04:04,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:04:04,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:04:04,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:04:04,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:04:04,785 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:04:04,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:04:04,786 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:04:04,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:04:04,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:04:04,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:04:04,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:04:04,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:04:04,788 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:04:04,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:04:04,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:04:04,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:04:04,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:04:04,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:04:04,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:04:04,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:04:04,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:04:04,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:04:04,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:04:04,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:04:04,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:04:04,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:04:04,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:04:04,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:04:04,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 500cb8735f650eb0e7c33062ddc23c2166b17f19 [2020-10-26 04:04:05,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:04:05,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:04:05,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:04:05,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:04:05,251 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:04:05,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2020-10-26 04:04:05,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f850debd1/403d2f8c942743cb9437cdf593280263/FLAG3afe0edf3 [2020-10-26 04:04:06,004 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:04:06,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2020-10-26 04:04:06,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f850debd1/403d2f8c942743cb9437cdf593280263/FLAG3afe0edf3 [2020-10-26 04:04:06,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f850debd1/403d2f8c942743cb9437cdf593280263 [2020-10-26 04:04:06,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:04:06,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:04:06,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:04:06,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:04:06,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:04:06,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af81d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06, skipping insertion in model container [2020-10-26 04:04:06,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:04:06,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:04:06,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:04:06,617 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:04:06,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:04:06,650 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:04:06,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06 WrapperNode [2020-10-26 04:04:06,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:04:06,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:04:06,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:04:06,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:04:06,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:04:06,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:04:06,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:04:06,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:04:06,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (1/1) ... [2020-10-26 04:04:06,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:04:06,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:04:06,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:04:06,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:04:06,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (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 [2020-10-26 04:04:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:04:06,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:04:07,110 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:04:07,110 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:04:07,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:04:07 BoogieIcfgContainer [2020-10-26 04:04:07,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:04:07,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:04:07,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:04:07,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:04:07,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:04:06" (1/3) ... [2020-10-26 04:04:07,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292e6922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:04:07, skipping insertion in model container [2020-10-26 04:04:07,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:06" (2/3) ... [2020-10-26 04:04:07,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292e6922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:04:07, skipping insertion in model container [2020-10-26 04:04:07,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:04:07" (3/3) ... [2020-10-26 04:04:07,138 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2020-10-26 04:04:07,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:04:07,185 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-26 04:04:07,223 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 04:04:07,291 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:04:07,296 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:04:07,297 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:04:07,297 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:04:07,297 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:04:07,298 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:04:07,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:04:07,298 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:04:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-26 04:04:07,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-26 04:04:07,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:07,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-26 04:04:07,328 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:07,336 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2020-10-26 04:04:07,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:07,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528345546] [2020-10-26 04:04:07,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:07,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528345546] [2020-10-26 04:04:07,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:04:07,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:04:07,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870973770] [2020-10-26 04:04:07,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:04:07,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:07,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:04:07,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:04:07,561 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-10-26 04:04:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:07,617 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-10-26 04:04:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:04:07,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-26 04:04:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:07,629 INFO L225 Difference]: With dead ends: 29 [2020-10-26 04:04:07,630 INFO L226 Difference]: Without dead ends: 16 [2020-10-26 04:04:07,633 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 [2020-10-26 04:04:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-26 04:04:07,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-26 04:04:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-26 04:04:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-10-26 04:04:07,669 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2020-10-26 04:04:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:07,669 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-10-26 04:04:07,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:04:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-10-26 04:04:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-26 04:04:07,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:07,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-26 04:04:07,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:04:07,672 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:07,673 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-10-26 04:04:07,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:07,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208601407] [2020-10-26 04:04:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:07,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208601407] [2020-10-26 04:04:07,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:04:07,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:04:07,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531038014] [2020-10-26 04:04:07,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:04:07,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:07,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:04:07,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:04:07,709 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-10-26 04:04:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:07,732 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-10-26 04:04:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:04:07,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-26 04:04:07,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:07,734 INFO L225 Difference]: With dead ends: 30 [2020-10-26 04:04:07,734 INFO L226 Difference]: Without dead ends: 17 [2020-10-26 04:04:07,735 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 [2020-10-26 04:04:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-26 04:04:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-26 04:04:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-26 04:04:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-26 04:04:07,741 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2020-10-26 04:04:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:07,742 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-26 04:04:07,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:04:07,742 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-26 04:04:07,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 04:04:07,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:07,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:04:07,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 04:04:07,744 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:07,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:07,746 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2020-10-26 04:04:07,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:07,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562959859] [2020-10-26 04:04:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:07,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562959859] [2020-10-26 04:04:07,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:04:07,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:04:07,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270046415] [2020-10-26 04:04:07,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:04:07,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:07,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:04:07,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:04:07,810 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2020-10-26 04:04:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:07,857 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-10-26 04:04:07,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:04:07,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-26 04:04:07,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:07,860 INFO L225 Difference]: With dead ends: 17 [2020-10-26 04:04:07,862 INFO L226 Difference]: Without dead ends: 16 [2020-10-26 04:04:07,863 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 [2020-10-26 04:04:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-26 04:04:07,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-26 04:04:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-26 04:04:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-26 04:04:07,874 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2020-10-26 04:04:07,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:07,875 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-26 04:04:07,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:04:07,876 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-10-26 04:04:07,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 04:04:07,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:07,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-26 04:04:07,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 04:04:07,879 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:07,880 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2020-10-26 04:04:07,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:07,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033874672] [2020-10-26 04:04:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:07,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033874672] [2020-10-26 04:04:07,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124792110] [2020-10-26 04:04:07,964 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 [2020-10-26 04:04:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:08,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-26 04:04:08,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:04:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:08,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:04:08,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-26 04:04:08,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927357045] [2020-10-26 04:04:08,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:04:08,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:08,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:04:08,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:04:08,094 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-10-26 04:04:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:08,141 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-26 04:04:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:04:08,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-26 04:04:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:08,143 INFO L225 Difference]: With dead ends: 22 [2020-10-26 04:04:08,143 INFO L226 Difference]: Without dead ends: 21 [2020-10-26 04:04:08,144 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 [2020-10-26 04:04:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-26 04:04:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-26 04:04:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-26 04:04:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-26 04:04:08,157 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2020-10-26 04:04:08,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:08,157 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-26 04:04:08,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:04:08,158 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-26 04:04:08,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 04:04:08,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:08,159 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:04:08,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:04:08,374 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:08,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:08,376 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2020-10-26 04:04:08,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:08,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477548768] [2020-10-26 04:04:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 04:04:08,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477548768] [2020-10-26 04:04:08,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:04:08,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:04:08,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983313244] [2020-10-26 04:04:08,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:04:08,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:08,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:04:08,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:04:08,406 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2020-10-26 04:04:08,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:08,426 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-10-26 04:04:08,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:04:08,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-26 04:04:08,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:08,427 INFO L225 Difference]: With dead ends: 33 [2020-10-26 04:04:08,427 INFO L226 Difference]: Without dead ends: 32 [2020-10-26 04:04:08,428 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 [2020-10-26 04:04:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-26 04:04:08,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-26 04:04:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-26 04:04:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-26 04:04:08,435 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 9 [2020-10-26 04:04:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:08,435 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-26 04:04:08,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:04:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-26 04:04:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 04:04:08,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:08,436 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:04:08,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 04:04:08,436 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:08,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:08,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1897256205, now seen corresponding path program 1 times [2020-10-26 04:04:08,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:08,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699818522] [2020-10-26 04:04:08,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 04:04:08,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699818522] [2020-10-26 04:04:08,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:04:08,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:04:08,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328436863] [2020-10-26 04:04:08,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:04:08,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:08,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:04:08,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:04:08,488 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2020-10-26 04:04:08,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:08,508 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-10-26 04:04:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:04:08,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-26 04:04:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:08,512 INFO L225 Difference]: With dead ends: 30 [2020-10-26 04:04:08,513 INFO L226 Difference]: Without dead ends: 29 [2020-10-26 04:04:08,514 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 [2020-10-26 04:04:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-26 04:04:08,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-26 04:04:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-26 04:04:08,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-26 04:04:08,529 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 10 [2020-10-26 04:04:08,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:08,529 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-26 04:04:08,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:04:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-26 04:04:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 04:04:08,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:08,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-10-26 04:04:08,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 04:04:08,531 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:08,534 INFO L82 PathProgramCache]: Analyzing trace with hash 432560224, now seen corresponding path program 2 times [2020-10-26 04:04:08,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:08,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378426254] [2020-10-26 04:04:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 04:04:08,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378426254] [2020-10-26 04:04:08,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662219743] [2020-10-26 04:04:08,633 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) [2020-10-26 04:04:08,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-26 04:04:08,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 04:04:08,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:04:08,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:04:08,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 04:04:08,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:04:08,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-26 04:04:08,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038537900] [2020-10-26 04:04:08,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:04:08,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:08,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:04:08,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:04:08,722 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2020-10-26 04:04:08,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:08,769 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-10-26 04:04:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 04:04:08,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-26 04:04:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:08,771 INFO L225 Difference]: With dead ends: 29 [2020-10-26 04:04:08,771 INFO L226 Difference]: Without dead ends: 28 [2020-10-26 04:04:08,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:04:08,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-26 04:04:08,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2020-10-26 04:04:08,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-26 04:04:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-26 04:04:08,776 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2020-10-26 04:04:08,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:08,777 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-26 04:04:08,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:04:08,777 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-10-26 04:04:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 04:04:08,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:08,778 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:04:08,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:04:08,990 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:08,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:08,991 INFO L82 PathProgramCache]: Analyzing trace with hash 610055194, now seen corresponding path program 1 times [2020-10-26 04:04:08,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:08,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368106095] [2020-10-26 04:04:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 04:04:09,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368106095] [2020-10-26 04:04:09,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886857600] [2020-10-26 04:04:09,050 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 [2020-10-26 04:04:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:09,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-26 04:04:09,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:04:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 04:04:09,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:04:09,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2020-10-26 04:04:09,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250458038] [2020-10-26 04:04:09,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 04:04:09,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:09,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 04:04:09,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:04:09,111 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-10-26 04:04:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:09,214 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-10-26 04:04:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 04:04:09,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-26 04:04:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:09,215 INFO L225 Difference]: With dead ends: 34 [2020-10-26 04:04:09,215 INFO L226 Difference]: Without dead ends: 27 [2020-10-26 04:04:09,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-26 04:04:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-26 04:04:09,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-26 04:04:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-26 04:04:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-26 04:04:09,221 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2020-10-26 04:04:09,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:09,222 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-26 04:04:09,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 04:04:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-26 04:04:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 04:04:09,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:09,223 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2020-10-26 04:04:09,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:04:09,434 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:09,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1201123269, now seen corresponding path program 2 times [2020-10-26 04:04:09,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:09,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536797475] [2020-10-26 04:04:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-26 04:04:09,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536797475] [2020-10-26 04:04:09,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535514962] [2020-10-26 04:04:09,477 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) [2020-10-26 04:04:09,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-26 04:04:09,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 04:04:09,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:04:09,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:04:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-26 04:04:09,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:04:09,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-10-26 04:04:09,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569595686] [2020-10-26 04:04:09,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:04:09,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:09,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:04:09,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:04:09,545 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2020-10-26 04:04:09,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:09,563 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-10-26 04:04:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:04:09,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-26 04:04:09,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:09,564 INFO L225 Difference]: With dead ends: 26 [2020-10-26 04:04:09,564 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 04:04:09,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:04:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 04:04:09,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 04:04:09,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 04:04:09,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 04:04:09,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-26 04:04:09,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:09,566 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:04:09,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:04:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:04:09,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 04:04:09,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:04:09,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-26 04:04:09,870 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-26 04:04:09,870 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-26 04:04:09,870 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-10-26 04:04:09,870 INFO L277 CegarLoopResult]: At program point L29(lines 13 30) the Hoare annotation is: true [2020-10-26 04:04:09,871 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-26 04:04:09,871 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-10-26 04:04:09,871 INFO L274 CegarLoopResult]: For program point L21(lines 21 26) no Hoare annotation was computed. [2020-10-26 04:04:09,871 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))) [2020-10-26 04:04:09,871 INFO L274 CegarLoopResult]: For program point L17(lines 17 28) no Hoare annotation was computed. [2020-10-26 04:04:09,871 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2020-10-26 04:04:09,871 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-26 04:04:09,872 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-10-26 04:04:09,872 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-26 04:04:09,872 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-26 04:04:09,872 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-10-26 04:04:09,872 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-26 04:04:09,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:04:09 BoogieIcfgContainer [2020-10-26 04:04:09,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:04:09,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:04:09,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:04:09,891 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:04:09,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:04:07" (3/4) ... [2020-10-26 04:04:09,895 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 04:04:09,905 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-26 04:04:09,905 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-26 04:04:09,944 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:04:09,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:04:09,947 INFO L168 Benchmark]: Toolchain (without parser) took 3574.69 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.7 MB in the beginning and 25.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:09,947 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 39.8 MB. Free memory was 19.3 MB in the beginning and 19.2 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:04:09,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.27 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 31.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:09,949 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.54 ms. Allocated memory is still 52.4 MB. Free memory was 31.7 MB in the beginning and 30.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:09,949 INFO L168 Benchmark]: Boogie Preprocessor took 21.43 ms. Allocated memory is still 52.4 MB. Free memory was 30.4 MB in the beginning and 29.7 MB in the end (delta: 779.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:04:09,950 INFO L168 Benchmark]: RCFGBuilder took 401.59 ms. Allocated memory is still 52.4 MB. Free memory was 29.5 MB in the beginning and 33.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:09,951 INFO L168 Benchmark]: TraceAbstraction took 2771.07 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 33.3 MB in the beginning and 27.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:09,952 INFO L168 Benchmark]: Witness Printer took 54.11 ms. Allocated memory is still 62.9 MB. Free memory was 27.9 MB in the beginning and 25.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:09,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 39.8 MB. Free memory was 19.3 MB in the beginning and 19.2 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.27 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 31.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.54 ms. Allocated memory is still 52.4 MB. Free memory was 31.7 MB in the beginning and 30.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.43 ms. Allocated memory is still 52.4 MB. Free memory was 30.4 MB in the beginning and 29.7 MB in the end (delta: 779.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 401.59 ms. Allocated memory is still 52.4 MB. Free memory was 29.5 MB in the beginning and 33.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2771.07 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 33.3 MB in the beginning and 27.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * Witness Printer took 54.11 ms. Allocated memory is still 62.9 MB. Free memory was 27.9 MB in the beginning and 25.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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: 2.4s, 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, 60 SyntacticMatches, 3 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, 0.5s 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...