./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/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 32bit --witnessprinter.graph.data.programhash 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:17:01,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:17:01,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:17:01,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:17:01,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:17:01,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:17:01,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:17:01,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:17:01,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:17:01,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:17:01,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:17:01,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:17:01,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:17:01,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:17:01,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:17:01,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:17:01,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:17:01,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:17:01,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:17:01,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:17:01,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:17:01,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:17:01,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:17:01,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:17:01,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:17:01,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:17:01,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:17:01,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:17:01,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:17:01,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:17:01,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:17:01,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:17:01,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:17:01,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:17:01,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:17:01,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:17:01,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:17:01,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:17:01,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:17:01,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:17:01,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:17:01,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-29 20:17:01,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:17:01,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:17:01,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:17:01,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:17:01,931 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:17:01,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:17:01,931 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:17:01,932 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:17:01,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:17:01,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:17:01,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:17:01,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:17:01,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:17:01,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:17:01,934 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 20:17:01,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:17:01,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:17:01,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:17:01,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:17:01,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:17:01,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:17:01,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:17:01,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:17:01,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:17:01,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:17:01,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:17:01,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:17:01,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:17:01,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:17:01,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:17:01,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:17:01,939 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_f7f9fd65-e998-48a7-9892-8f34ef9bf565/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a [2020-11-29 20:17:02,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:17:02,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:17:02,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:17:02,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:17:02,297 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:17:02,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2020-11-29 20:17:02,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/data/f2821458e/802df99fc4cd4565bf9f38030306ae6e/FLAG0275a0490 [2020-11-29 20:17:02,960 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:17:02,960 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2020-11-29 20:17:02,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/data/f2821458e/802df99fc4cd4565bf9f38030306ae6e/FLAG0275a0490 [2020-11-29 20:17:03,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/data/f2821458e/802df99fc4cd4565bf9f38030306ae6e [2020-11-29 20:17:03,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:17:03,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:17:03,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:17:03,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:17:03,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:17:03,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a85f7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03, skipping insertion in model container [2020-11-29 20:17:03,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:17:03,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:17:03,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:17:03,565 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:17:03,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:17:03,613 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:17:03,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03 WrapperNode [2020-11-29 20:17:03,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:17:03,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:17:03,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:17:03,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:17:03,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:17:03,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:17:03,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:17:03,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:17:03,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (1/1) ... [2020-11-29 20:17:03,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:17:03,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:17:03,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:17:03,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:17:03,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/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 [2020-11-29 20:17:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:17:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:17:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:17:03,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:17:04,199 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:17:04,199 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:17:04,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:17:04 BoogieIcfgContainer [2020-11-29 20:17:04,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:17:04,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:17:04,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:17:04,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:17:04,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:17:03" (1/3) ... [2020-11-29 20:17:04,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d15e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:17:04, skipping insertion in model container [2020-11-29 20:17:04,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:17:03" (2/3) ... [2020-11-29 20:17:04,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d15e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:17:04, skipping insertion in model container [2020-11-29 20:17:04,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:17:04" (3/3) ... [2020-11-29 20:17:04,211 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2020-11-29 20:17:04,221 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:17:04,225 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 20:17:04,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 20:17:04,273 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:17:04,273 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:17:04,274 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:17:04,274 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:17:04,274 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:17:04,274 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:17:04,274 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:17:04,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:17:04,292 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 20:17:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 20:17:04,296 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:17:04,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 20:17:04,299 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:17:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:17:04,306 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2020-11-29 20:17:04,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:17:04,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000163268] [2020-11-29 20:17:04,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:17:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:17:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:17:04,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000163268] [2020-11-29 20:17:04,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:17:04,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:17:04,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829647951] [2020-11-29 20:17:04,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:17:04,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:17:04,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:17:04,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:17:04,576 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2020-11-29 20:17:04,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:17:04,681 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-11-29 20:17:04,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:17:04,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-29 20:17:04,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:17:04,696 INFO L225 Difference]: With dead ends: 38 [2020-11-29 20:17:04,696 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 20:17:04,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:17:04,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 20:17:04,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2020-11-29 20:17:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 20:17:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-29 20:17:04,738 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2020-11-29 20:17:04,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:17:04,739 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-29 20:17:04,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:17:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-29 20:17:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:17:04,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:17:04,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:17:04,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:17:04,741 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:17:04,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:17:04,742 INFO L82 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2020-11-29 20:17:04,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:17:04,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499606754] [2020-11-29 20:17:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:17:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:17:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:17:04,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499606754] [2020-11-29 20:17:04,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:17:04,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:17:04,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929439720] [2020-11-29 20:17:04,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:17:04,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:17:04,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:17:04,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:17:04,798 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2020-11-29 20:17:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:17:04,842 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-29 20:17:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:17:04,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 20:17:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:17:04,844 INFO L225 Difference]: With dead ends: 14 [2020-11-29 20:17:04,844 INFO L226 Difference]: Without dead ends: 13 [2020-11-29 20:17:04,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:17:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-29 20:17:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-29 20:17:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 20:17:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-29 20:17:04,848 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2020-11-29 20:17:04,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:17:04,849 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-29 20:17:04,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:17:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-29 20:17:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:17:04,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:17:04,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:17:04,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:17:04,850 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:17:04,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:17:04,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2020-11-29 20:17:04,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:17:04,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619213953] [2020-11-29 20:17:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:17:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:17:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:17:04,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619213953] [2020-11-29 20:17:04,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:17:04,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:17:04,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938221402] [2020-11-29 20:17:04,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:17:04,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:17:04,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:17:04,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:17:04,907 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-11-29 20:17:04,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:17:04,950 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-29 20:17:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:17:04,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 20:17:04,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:17:04,953 INFO L225 Difference]: With dead ends: 13 [2020-11-29 20:17:04,953 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 20:17:04,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:17:04,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 20:17:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 20:17:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 20:17:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-29 20:17:04,955 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-11-29 20:17:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:17:04,955 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-29 20:17:04,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:17:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-29 20:17:04,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:17:04,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:17:04,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:17:04,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:17:04,956 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:17:04,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:17:04,957 INFO L82 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2020-11-29 20:17:04,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:17:04,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46327522] [2020-11-29 20:17:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:17:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:17:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:17:05,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46327522] [2020-11-29 20:17:05,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:17:05,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:17:05,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460977275] [2020-11-29 20:17:05,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:17:05,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:17:05,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:17:05,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:17:05,034 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-11-29 20:17:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:17:05,080 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-29 20:17:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:17:05,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:17:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:17:05,081 INFO L225 Difference]: With dead ends: 16 [2020-11-29 20:17:05,081 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 20:17:05,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:17:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 20:17:05,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 20:17:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 20:17:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-29 20:17:05,085 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-11-29 20:17:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:17:05,085 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-29 20:17:05,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:17:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-29 20:17:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:17:05,086 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:17:05,086 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:17:05,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:17:05,087 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:17:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:17:05,087 INFO L82 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2020-11-29 20:17:05,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:17:05,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214470921] [2020-11-29 20:17:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:17:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:17:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:17:05,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214470921] [2020-11-29 20:17:05,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454651415] [2020-11-29 20:17:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/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 [2020-11-29 20:17:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:17:05,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:17:05,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:17:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:17:05,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:17:05,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-29 20:17:05,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080181583] [2020-11-29 20:17:05,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:17:05,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:17:05,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:17:05,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:17:05,336 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2020-11-29 20:17:05,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:17:05,436 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-29 20:17:05,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:17:05,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 20:17:05,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:17:05,438 INFO L225 Difference]: With dead ends: 19 [2020-11-29 20:17:05,438 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 20:17:05,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:17:05,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 20:17:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-29 20:17:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 20:17:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-29 20:17:05,443 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2020-11-29 20:17:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:17:05,444 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-29 20:17:05,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:17:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-29 20:17:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:17:05,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:17:05,448 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 20:17:05,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:17:05,661 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:17:05,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:17:05,661 INFO L82 PathProgramCache]: Analyzing trace with hash -2010663901, now seen corresponding path program 1 times [2020-11-29 20:17:05,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:17:05,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178208706] [2020-11-29 20:17:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:17:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:17:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:17:05,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178208706] [2020-11-29 20:17:05,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639662456] [2020-11-29 20:17:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/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 [2020-11-29 20:17:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:17:05,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:17:05,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:17:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:17:06,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:17:06,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2020-11-29 20:17:06,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906372964] [2020-11-29 20:17:06,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:17:06,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:17:06,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:17:06,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:17:06,037 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2020-11-29 20:17:06,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:17:06,318 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-29 20:17:06,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:17:06,319 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-29 20:17:06,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:17:06,320 INFO L225 Difference]: With dead ends: 27 [2020-11-29 20:17:06,320 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 20:17:06,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-11-29 20:17:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 20:17:06,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-11-29 20:17:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 20:17:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-11-29 20:17:06,329 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 13 [2020-11-29 20:17:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:17:06,329 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-11-29 20:17:06,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:17:06,329 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-11-29 20:17:06,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 20:17:06,330 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:17:06,330 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 20:17:06,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:17:06,561 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:17:06,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:17:06,562 INFO L82 PathProgramCache]: Analyzing trace with hash 487275813, now seen corresponding path program 2 times [2020-11-29 20:17:06,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:17:06,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959197931] [2020-11-29 20:17:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:17:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:17:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:17:06,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959197931] [2020-11-29 20:17:06,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423633865] [2020-11-29 20:17:06,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/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 [2020-11-29 20:17:06,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 20:17:06,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:17:06,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:17:06,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:17:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 20:17:06,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:17:06,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 9 [2020-11-29 20:17:06,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398458776] [2020-11-29 20:17:06,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:17:06,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:17:06,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:17:06,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:17:06,796 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2020-11-29 20:17:06,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:17:06,962 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-29 20:17:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:17:06,964 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-29 20:17:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:17:06,965 INFO L225 Difference]: With dead ends: 25 [2020-11-29 20:17:06,965 INFO L226 Difference]: Without dead ends: 24 [2020-11-29 20:17:06,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-11-29 20:17:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-29 20:17:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-29 20:17:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 20:17:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-29 20:17:06,976 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2020-11-29 20:17:06,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:17:06,976 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-29 20:17:06,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:17:06,977 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-29 20:17:06,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 20:17:06,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:17:06,978 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1] [2020-11-29 20:17:07,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:17:07,201 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:17:07,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:17:07,202 INFO L82 PathProgramCache]: Analyzing trace with hash 98931619, now seen corresponding path program 2 times [2020-11-29 20:17:07,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:17:07,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306751282] [2020-11-29 20:17:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:17:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:17:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-29 20:17:07,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306751282] [2020-11-29 20:17:07,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783496096] [2020-11-29 20:17:07,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/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 [2020-11-29 20:17:07,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:17:07,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:17:07,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 20:17:07,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:17:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:17:07,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:17:07,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13] total 16 [2020-11-29 20:17:07,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871900077] [2020-11-29 20:17:07,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 20:17:07,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:17:07,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 20:17:07,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-11-29 20:17:07,784 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 17 states. [2020-11-29 20:17:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:17:08,230 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-29 20:17:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 20:17:08,230 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2020-11-29 20:17:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:17:08,231 INFO L225 Difference]: With dead ends: 27 [2020-11-29 20:17:08,231 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:17:08,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-11-29 20:17:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:17:08,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:17:08,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:17:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:17:08,234 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-29 20:17:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:17:08,234 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:17:08,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 20:17:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:17:08,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:17:08,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:17:08,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:17:08,504 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 20:17:08,504 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:17:08,504 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 20:17:08,505 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-29 20:17:08,505 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-29 20:17:08,505 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-29 20:17:08,505 INFO L274 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-11-29 20:17:08,505 INFO L274 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-11-29 20:17:08,505 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-29 20:17:08,505 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-29 20:17:08,505 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:17:08,506 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 20:17:08,506 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 20:17:08,506 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:17:08,506 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:17:08,506 INFO L277 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: true [2020-11-29 20:17:08,506 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (<= ULTIMATE.start_main_~n~0 2147483647) (<= ULTIMATE.start_main_~k~0 2147483647)) [2020-11-29 20:17:08,506 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2020-11-29 20:17:08,507 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-29 20:17:08,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:17:08 BoogieIcfgContainer [2020-11-29 20:17:08,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:17:08,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:17:08,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:17:08,526 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:17:08,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:17:04" (3/4) ... [2020-11-29 20:17:08,529 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:17:08,539 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 20:17:08,539 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:17:08,539 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:17:08,539 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:17:08,584 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f7f9fd65-e998-48a7-9892-8f34ef9bf565/bin/uautomizer/witness.graphml [2020-11-29 20:17:08,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:17:08,586 INFO L168 Benchmark]: Toolchain (without parser) took 5275.03 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 74.6 MB in the beginning and 93.6 MB in the end (delta: -19.0 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:17:08,586 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 41.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:17:08,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.97 ms. Allocated memory is still 102.8 MB. Free memory was 74.6 MB in the beginning and 80.2 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:17:08,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.04 ms. Allocated memory is still 102.8 MB. Free memory was 80.2 MB in the beginning and 78.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:17:08,587 INFO L168 Benchmark]: Boogie Preprocessor took 36.25 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 77.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:17:08,588 INFO L168 Benchmark]: RCFGBuilder took 501.50 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 65.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:17:08,588 INFO L168 Benchmark]: TraceAbstraction took 4322.87 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 65.1 MB in the beginning and 96.7 MB in the end (delta: -31.7 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:17:08,588 INFO L168 Benchmark]: Witness Printer took 58.98 ms. Allocated memory is still 123.7 MB. Free memory was 96.7 MB in the beginning and 93.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:17:08,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 41.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.97 ms. Allocated memory is still 102.8 MB. Free memory was 74.6 MB in the beginning and 80.2 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.04 ms. Allocated memory is still 102.8 MB. Free memory was 80.2 MB in the beginning and 78.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.25 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 77.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 501.50 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 65.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4322.87 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 65.1 MB in the beginning and 96.7 MB in the end (delta: -31.7 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. * Witness Printer took 58.98 ms. Allocated memory is still 123.7 MB. Free memory was 96.7 MB in the beginning and 93.6 MB in the end (delta: 3.1 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: 25]: 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: 25]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((0 <= j && n <= k + j) && n <= 2147483647) && k <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 91 SDslu, 134 SDs, 0 SdLazy, 333 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=6, 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, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 86 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 148 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 8476 SizeOfPredicates, 18 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 25/92 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...