./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 554582d6fc3de8e87f5dd30e5019302b6e1b96be ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:18:43,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:18:43,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:18:43,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:18:43,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:18:43,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:18:43,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:18:43,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:18:43,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:18:43,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:18:43,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:18:43,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:18:43,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:18:43,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:18:43,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:18:43,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:18:43,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:18:43,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:18:43,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:18:43,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:18:43,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:18:43,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:18:43,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:18:43,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:18:43,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:18:43,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:18:43,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:18:43,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:18:43,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:18:43,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:18:43,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:18:43,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:18:43,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:18:43,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:18:43,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:18:43,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:18:43,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:18:43,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:18:43,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:18:43,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:18:43,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:18:43,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:18:43,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:18:43,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:18:43,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:18:43,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:18:43,772 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:18:43,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:18:43,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:18:43,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:18:43,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:18:43,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:18:43,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:18:43,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:18:43,776 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:18:43,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:18:43,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:18:43,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:18:43,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:18:43,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:18:43,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:18:43,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:18:43,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:18:43,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:18:43,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:18:43,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:18:43,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:18:43,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:18:43,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:18:43,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:18:43,780 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:/tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2020-11-28 03:18:44,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:18:44,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:18:44,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:18:44,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:18:44,117 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:18:44,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2020-11-28 03:18:44,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/data/0f0fac81b/b924bfca4990491ba0ce651fd548d4a8/FLAG679fdfdcd [2020-11-28 03:18:44,795 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:18:44,796 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2020-11-28 03:18:44,803 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/data/0f0fac81b/b924bfca4990491ba0ce651fd548d4a8/FLAG679fdfdcd [2020-11-28 03:18:45,177 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/data/0f0fac81b/b924bfca4990491ba0ce651fd548d4a8 [2020-11-28 03:18:45,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:18:45,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:18:45,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:45,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:18:45,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:18:45,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7762479f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45, skipping insertion in model container [2020-11-28 03:18:45,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:18:45,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:18:45,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:45,352 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:18:45,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:45,381 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:18:45,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45 WrapperNode [2020-11-28 03:18:45,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:45,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:45,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:18:45,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:18:45,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:45,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:18:45,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:18:45,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:18:45,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (1/1) ... [2020-11-28 03:18:45,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:18:45,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:18:45,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:18:45,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:18:45,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/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 [2020-11-28 03:18:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure p [2020-11-28 03:18:45,536 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2020-11-28 03:18:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:18:45,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:18:45,768 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:18:45,769 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 03:18:45,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:45 BoogieIcfgContainer [2020-11-28 03:18:45,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:18:45,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:18:45,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:18:45,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:18:45,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:18:45" (1/3) ... [2020-11-28 03:18:45,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@962e2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:45, skipping insertion in model container [2020-11-28 03:18:45,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:45" (2/3) ... [2020-11-28 03:18:45,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@962e2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:45, skipping insertion in model container [2020-11-28 03:18:45,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:45" (3/3) ... [2020-11-28 03:18:45,804 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2020-11-28 03:18:45,815 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:18:45,833 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 03:18:45,845 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:18:45,866 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:18:45,867 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:18:45,867 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:18:45,867 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:18:45,867 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:18:45,868 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:18:45,868 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:18:45,868 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:18:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-28 03:18:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:18:45,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:45,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:18:45,887 INFO L429 AbstractCegarLoop]: === Iteration 1 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:18:45,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:45,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1571177437, now seen corresponding path program 1 times [2020-11-28 03:18:45,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:45,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062011920] [2020-11-28 03:18:45,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:46,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062011920] [2020-11-28 03:18:46,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:46,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:18:46,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093562832] [2020-11-28 03:18:46,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:18:46,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:46,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:18:46,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:18:46,158 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-11-28 03:18:46,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:46,418 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-11-28 03:18:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:18:46,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-28 03:18:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:46,429 INFO L225 Difference]: With dead ends: 44 [2020-11-28 03:18:46,430 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 03:18:46,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:18:46,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 03:18:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2020-11-28 03:18:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:18:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-28 03:18:46,471 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2020-11-28 03:18:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:46,472 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-28 03:18:46,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:18:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-28 03:18:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:18:46,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:46,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:46,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:18:46,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:18:46,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:46,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1461860328, now seen corresponding path program 1 times [2020-11-28 03:18:46,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:46,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118316928] [2020-11-28 03:18:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:46,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118316928] [2020-11-28 03:18:46,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:46,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:18:46,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177697518] [2020-11-28 03:18:46,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:18:46,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:46,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:18:46,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:18:46,519 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-11-28 03:18:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:46,534 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-11-28 03:18:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:18:46,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-28 03:18:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:46,536 INFO L225 Difference]: With dead ends: 19 [2020-11-28 03:18:46,536 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:18:46,537 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 [2020-11-28 03:18:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:18:46,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 03:18:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:18:46,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-28 03:18:46,542 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2020-11-28 03:18:46,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:46,542 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-28 03:18:46,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:18:46,543 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-28 03:18:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:18:46,543 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:46,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:46,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:18:46,544 INFO L429 AbstractCegarLoop]: === Iteration 3 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:18:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:46,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1461867311, now seen corresponding path program 1 times [2020-11-28 03:18:46,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:46,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416321315] [2020-11-28 03:18:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:46,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416321315] [2020-11-28 03:18:46,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:46,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:18:46,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720349034] [2020-11-28 03:18:46,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:18:46,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:46,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:18:46,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:18:46,599 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-11-28 03:18:46,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:46,715 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-28 03:18:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:18:46,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 03:18:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:46,718 INFO L225 Difference]: With dead ends: 30 [2020-11-28 03:18:46,719 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:18:46,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:18:46,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:18:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-11-28 03:18:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:18:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-28 03:18:46,733 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2020-11-28 03:18:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:46,733 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-28 03:18:46,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:18:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-28 03:18:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:18:46,734 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:46,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:46,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:18:46,734 INFO L429 AbstractCegarLoop]: === Iteration 4 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:18:46,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:46,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1926753568, now seen corresponding path program 1 times [2020-11-28 03:18:46,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:46,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38563662] [2020-11-28 03:18:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:46,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38563662] [2020-11-28 03:18:46,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:46,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:18:46,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75819830] [2020-11-28 03:18:46,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:18:46,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:46,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:18:46,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:18:46,767 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2020-11-28 03:18:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:46,791 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-11-28 03:18:46,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:18:46,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 03:18:46,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:46,795 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:18:46,795 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:18:46,796 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 [2020-11-28 03:18:46,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:18:46,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 03:18:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:18:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-28 03:18:46,802 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2020-11-28 03:18:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:46,802 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-28 03:18:46,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:18:46,803 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-28 03:18:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:18:46,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:46,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:46,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:18:46,816 INFO L429 AbstractCegarLoop]: === Iteration 5 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:18:46,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:46,818 INFO L82 PathProgramCache]: Analyzing trace with hash 168982822, now seen corresponding path program 1 times [2020-11-28 03:18:46,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:46,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920708322] [2020-11-28 03:18:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:46,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920708322] [2020-11-28 03:18:46,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448297621] [2020-11-28 03:18:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/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 [2020-11-28 03:18:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:46,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:18:47,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:47,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:47,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-28 03:18:47,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942962197] [2020-11-28 03:18:47,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:18:47,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:47,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:18:47,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:18:47,115 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2020-11-28 03:18:47,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:47,298 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-11-28 03:18:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:18:47,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-28 03:18:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:47,303 INFO L225 Difference]: With dead ends: 45 [2020-11-28 03:18:47,303 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 03:18:47,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:18:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 03:18:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2020-11-28 03:18:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:18:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-11-28 03:18:47,311 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2020-11-28 03:18:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:47,311 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-11-28 03:18:47,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:18:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-11-28 03:18:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:18:47,314 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:47,314 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:47,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:18:47,529 INFO L429 AbstractCegarLoop]: === Iteration 6 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:18:47,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash 943507206, now seen corresponding path program 1 times [2020-11-28 03:18:47,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:47,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264364996] [2020-11-28 03:18:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:47,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264364996] [2020-11-28 03:18:47,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691178681] [2020-11-28 03:18:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/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 [2020-11-28 03:18:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:47,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:18:47,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:47,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:47,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-28 03:18:47,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126597101] [2020-11-28 03:18:47,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:18:47,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:47,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:18:47,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:18:47,737 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 7 states. [2020-11-28 03:18:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:47,886 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-11-28 03:18:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:18:47,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-28 03:18:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:47,889 INFO L225 Difference]: With dead ends: 67 [2020-11-28 03:18:47,889 INFO L226 Difference]: Without dead ends: 65 [2020-11-28 03:18:47,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:18:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-28 03:18:47,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 33. [2020-11-28 03:18:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:18:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-11-28 03:18:47,898 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2020-11-28 03:18:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:47,898 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-11-28 03:18:47,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:18:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-11-28 03:18:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:18:47,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:47,900 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:48,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:18:48,100 INFO L429 AbstractCegarLoop]: === Iteration 7 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:18:48,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:48,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1019019044, now seen corresponding path program 1 times [2020-11-28 03:18:48,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:48,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100944097] [2020-11-28 03:18:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:48,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100944097] [2020-11-28 03:18:48,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34370872] [2020-11-28 03:18:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/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 [2020-11-28 03:18:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:48,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:18:48,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:48,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:48,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-28 03:18:48,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673250838] [2020-11-28 03:18:48,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:18:48,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:48,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:18:48,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:18:48,282 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2020-11-28 03:18:48,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:48,412 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-11-28 03:18:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:18:48,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-28 03:18:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:48,416 INFO L225 Difference]: With dead ends: 53 [2020-11-28 03:18:48,416 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 03:18:48,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:18:48,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 03:18:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2020-11-28 03:18:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 03:18:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-11-28 03:18:48,424 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 12 [2020-11-28 03:18:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:48,425 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-11-28 03:18:48,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:18:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-11-28 03:18:48,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:18:48,426 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:48,426 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:48,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:18:48,635 INFO L429 AbstractCegarLoop]: === Iteration 8 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:18:48,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:48,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1112438587, now seen corresponding path program 1 times [2020-11-28 03:18:48,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:48,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897494141] [2020-11-28 03:18:48,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:48,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897494141] [2020-11-28 03:18:48,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588748383] [2020-11-28 03:18:48,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/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 [2020-11-28 03:18:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:48,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:18:48,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:48,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:48,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-11-28 03:18:48,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588705849] [2020-11-28 03:18:48,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:18:48,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:48,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:18:48,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:18:48,881 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 9 states. [2020-11-28 03:18:49,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:49,229 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-11-28 03:18:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:18:49,231 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-28 03:18:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:49,231 INFO L225 Difference]: With dead ends: 47 [2020-11-28 03:18:49,231 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:18:49,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:18:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:18:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:18:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:18:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:18:49,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 03:18:49,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:49,234 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:49,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:18:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:18:49,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:18:49,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:18:49,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:18:49,878 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2020-11-28 03:18:50,014 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2020-11-28 03:18:50,017 INFO L274 CegarLoopResult]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2020-11-28 03:18:50,017 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-28 03:18:50,018 INFO L274 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-11-28 03:18:50,018 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-11-28 03:18:50,018 INFO L277 CegarLoopResult]: At program point pENTRY(lines 12 22) the Hoare annotation is: true [2020-11-28 03:18:50,018 INFO L270 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or (not (<= |p_#in~n| 2147483647)) (and (<= p_~n 2147483647) (<= p_~r 2147483647) (<= 1 p_~n) (<= p_~m 2147483647)) .cse0 .cse1) (or .cse0 .cse1 (not (<= |p_#in~n| 2147483646)) (<= p_~n 2147483646)))) [2020-11-28 03:18:50,018 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-28 03:18:50,019 INFO L274 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-11-28 03:18:50,019 INFO L274 CegarLoopResult]: For program point L13(lines 13 21) no Hoare annotation was computed. [2020-11-28 03:18:50,019 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-11-28 03:18:50,019 INFO L274 CegarLoopResult]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-28 03:18:50,019 INFO L270 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or (not (<= |p_#in~n| 2147483647)) .cse0 (and (<= p_~r 2147483647) (<= p_~n 2147483647) (<= p_~m 2147483647) (<= 1 p_~r)) .cse1) (or .cse0 .cse1 (not (<= |p_#in~n| 2147483646)) (<= p_~n 2147483646)))) [2020-11-28 03:18:50,020 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-11-28 03:18:50,020 INFO L274 CegarLoopResult]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-28 03:18:50,020 INFO L274 CegarLoopResult]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-28 03:18:50,020 INFO L274 CegarLoopResult]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-28 03:18:50,020 INFO L274 CegarLoopResult]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2020-11-28 03:18:50,020 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:18:50,020 INFO L270 CegarLoopResult]: At program point L31(lines 24 32) the Hoare annotation is: (<= ULTIMATE.start_main_~r~0 2147483647) [2020-11-28 03:18:50,020 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:18:50,021 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~r~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-11-28 03:18:50,021 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:18:50,021 INFO L274 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-11-28 03:18:50,021 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-11-28 03:18:50,021 INFO L274 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2020-11-28 03:18:50,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:18:50 BoogieIcfgContainer [2020-11-28 03:18:50,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:18:50,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:18:50,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:18:50,040 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:18:50,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:45" (3/4) ... [2020-11-28 03:18:50,045 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:18:50,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2020-11-28 03:18:50,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 03:18:50,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 03:18:50,114 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_48efa1ea-96d6-466e-8169-d30a9ca6187b/bin/uautomizer/witness.graphml [2020-11-28 03:18:50,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:18:50,116 INFO L168 Benchmark]: Toolchain (without parser) took 4934.04 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 45.5 MB in the beginning and 70.9 MB in the end (delta: -25.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:50,116 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 77.6 MB. Free memory was 51.0 MB in the beginning and 51.0 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:50,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.11 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 45.3 MB in the beginning and 74.4 MB in the end (delta: -29.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:50,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 94.4 MB. Free memory was 74.4 MB in the beginning and 72.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:50,118 INFO L168 Benchmark]: Boogie Preprocessor took 16.66 ms. Allocated memory is still 94.4 MB. Free memory was 72.9 MB in the beginning and 72.3 MB in the end (delta: 657.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:50,119 INFO L168 Benchmark]: RCFGBuilder took 316.55 ms. Allocated memory is still 94.4 MB. Free memory was 72.3 MB in the beginning and 61.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:50,119 INFO L168 Benchmark]: TraceAbstraction took 4257.80 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.2 MB in the beginning and 73.0 MB in the end (delta: -11.7 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:50,120 INFO L168 Benchmark]: Witness Printer took 74.84 ms. Allocated memory is still 113.2 MB. Free memory was 73.0 MB in the beginning and 70.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:50,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 77.6 MB. Free memory was 51.0 MB in the beginning and 51.0 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 224.11 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 45.3 MB in the beginning and 74.4 MB in the end (delta: -29.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 94.4 MB. Free memory was 74.4 MB in the beginning and 72.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.66 ms. Allocated memory is still 94.4 MB. Free memory was 72.9 MB in the beginning and 72.3 MB in the end (delta: 657.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 316.55 ms. Allocated memory is still 94.4 MB. Free memory was 72.3 MB in the beginning and 61.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4257.80 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.2 MB in the beginning and 73.0 MB in the end (delta: -11.7 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. * Witness Printer took 74.84 ms. Allocated memory is still 113.2 MB. Free memory was 73.0 MB in the beginning and 70.9 MB in the end (delta: 2.1 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: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: r <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 199 SDslu, 230 SDs, 0 SdLazy, 349 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 71 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 29 PreInvPairs, 29 NumberOfFragments, 100 HoareAnnotationTreeSize, 29 FomulaSimplifications, 2229 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 5 FomulaSimplificationsInter, 278 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4106 SizeOfPredicates, 9 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 0/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...