./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU --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 2dd3364bf5e5337e36d5137f60eb9fb66edcf0c750f78ddc701b6a530fbd02a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:17:14,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:17:14,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:17:14,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:17:14,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:17:14,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:17:14,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:17:14,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:17:14,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:17:14,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:17:14,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:17:14,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:17:14,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:17:14,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:17:14,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:17:14,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:17:14,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:17:14,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:17:14,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:17:14,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:17:14,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:17:14,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:17:14,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:17:14,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:17:14,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:17:14,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:17:14,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:17:14,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:17:14,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:17:14,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:17:14,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:17:14,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:17:14,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:17:14,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:17:14,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:17:14,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:17:14,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:17:14,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:17:14,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:17:14,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:17:14,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:17:14,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-02 23:17:14,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:17:14,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:17:14,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:17:14,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:17:14,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:17:14,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:17:14,839 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:17:14,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:17:14,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:17:14,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 23:17:14,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:17:14,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:17:14,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:17:14,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:17:14,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:17:14,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:17:14,843 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-02 23:17:14,843 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:17:14,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:17:14,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:17:14,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:17:14,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:17:14,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:17:14,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:17:14,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:17:14,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:17:14,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:17:14,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:17:14,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:17:14,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:17:14,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:17:14,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:17:14,848 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_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dd3364bf5e5337e36d5137f60eb9fb66edcf0c750f78ddc701b6a530fbd02a5 [2021-11-02 23:17:15,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:17:15,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:17:15,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:17:15,166 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:17:15,167 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:17:15,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2021-11-02 23:17:15,223 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/data/8dd448235/da8c1d55f2544e9c80b8f5b41def031d/FLAG5a4fc3af3 [2021-11-02 23:17:15,664 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:17:15,665 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2021-11-02 23:17:15,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/data/8dd448235/da8c1d55f2544e9c80b8f5b41def031d/FLAG5a4fc3af3 [2021-11-02 23:17:16,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/data/8dd448235/da8c1d55f2544e9c80b8f5b41def031d [2021-11-02 23:17:16,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:17:16,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:17:16,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:17:16,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:17:16,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:17:16,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7921689f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16, skipping insertion in model container [2021-11-02 23:17:16,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:17:16,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:17:16,274 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i[873,886] [2021-11-02 23:17:16,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:17:16,294 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:17:16,307 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i[873,886] [2021-11-02 23:17:16,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:17:16,323 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:17:16,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16 WrapperNode [2021-11-02 23:17:16,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:17:16,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:17:16,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:17:16,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:17:16,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:17:16,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:17:16,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:17:16,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:17:16,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:17:16,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:17:16,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:17:16,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:17:16,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (1/1) ... [2021-11-02 23:17:16,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:17:16,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:17:16,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:17:16,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:17:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:17:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:17:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:17:16,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:17:16,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:17:16,714 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-02 23:17:16,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:17:16 BoogieIcfgContainer [2021-11-02 23:17:16,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:17:16,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:17:16,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:17:16,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:17:16,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:17:16" (1/3) ... [2021-11-02 23:17:16,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bae603f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:17:16, skipping insertion in model container [2021-11-02 23:17:16,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:17:16" (2/3) ... [2021-11-02 23:17:16,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bae603f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:17:16, skipping insertion in model container [2021-11-02 23:17:16,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:17:16" (3/3) ... [2021-11-02 23:17:16,726 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark19_conjunctive.i [2021-11-02 23:17:16,731 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:17:16,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-02 23:17:16,777 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:17:16,783 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 23:17:16,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-02 23:17:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-02 23:17:16,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:16,803 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-02 23:17:16,803 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 23:17:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:16,809 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-11-02 23:17:16,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:16,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341528961] [2021-11-02 23:17:16,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:16,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:17,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:17,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341528961] [2021-11-02 23:17:17,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341528961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:17:17,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:17:17,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:17:17,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556666297] [2021-11-02 23:17:17,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:17:17,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:17:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:17:17,160 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:17,239 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-02 23:17:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:17:17,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-02 23:17:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:17,248 INFO L225 Difference]: With dead ends: 35 [2021-11-02 23:17:17,249 INFO L226 Difference]: Without dead ends: 16 [2021-11-02 23:17:17,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:17:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-02 23:17:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-11-02 23:17:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-02 23:17:17,281 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-02 23:17:17,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:17,281 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-02 23:17:17,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-02 23:17:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 23:17:17,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:17,282 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 23:17:17,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:17:17,283 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 23:17:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-11-02 23:17:17,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:17,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273062919] [2021-11-02 23:17:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:17,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:17,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:17,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273062919] [2021-11-02 23:17:17,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273062919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:17:17,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:17:17,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:17:17,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741757991] [2021-11-02 23:17:17,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:17:17,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:17,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:17:17,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:17:17,365 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:17,407 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-02 23:17:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:17:17,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-02 23:17:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:17,409 INFO L225 Difference]: With dead ends: 15 [2021-11-02 23:17:17,410 INFO L226 Difference]: Without dead ends: 14 [2021-11-02 23:17:17,411 INFO L786 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 [2021-11-02 23:17:17,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-02 23:17:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-11-02 23:17:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-02 23:17:17,418 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-11-02 23:17:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:17,419 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-02 23:17:17,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-02 23:17:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 23:17:17,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:17,422 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:17:17,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:17:17,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 23:17:17,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-11-02 23:17:17,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:17,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366041964] [2021-11-02 23:17:17,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:17,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:17,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:17,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366041964] [2021-11-02 23:17:17,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366041964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:17:17,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:17:17,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:17:17,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458343717] [2021-11-02 23:17:17,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:17:17,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:17:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:17:17,494 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:17,542 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-02 23:17:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:17:17,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-02 23:17:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:17,544 INFO L225 Difference]: With dead ends: 17 [2021-11-02 23:17:17,544 INFO L226 Difference]: Without dead ends: 16 [2021-11-02 23:17:17,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:17:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-02 23:17:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2021-11-02 23:17:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-02 23:17:17,548 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-11-02 23:17:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:17,549 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-02 23:17:17,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-02 23:17:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 23:17:17,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:17,550 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:17:17,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:17:17,551 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 23:17:17,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-11-02 23:17:17,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:17,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33478703] [2021-11-02 23:17:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:17,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:17,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:17,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33478703] [2021-11-02 23:17:17,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33478703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:17:17,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:17:17,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:17:17,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682736909] [2021-11-02 23:17:17,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:17:17,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:17,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:17:17,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:17:17,636 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:17,678 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-02 23:17:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:17:17,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-02 23:17:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:17,680 INFO L225 Difference]: With dead ends: 16 [2021-11-02 23:17:17,680 INFO L226 Difference]: Without dead ends: 15 [2021-11-02 23:17:17,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:17:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-02 23:17:17,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-02 23:17:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-02 23:17:17,685 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-02 23:17:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:17,686 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-02 23:17:17,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-02 23:17:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 23:17:17,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:17,687 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:17:17,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:17:17,688 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 23:17:17,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-11-02 23:17:17,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:17,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988476662] [2021-11-02 23:17:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:17,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:17,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:17,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988476662] [2021-11-02 23:17:17,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988476662] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:17,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822150216] [2021-11-02 23:17:17,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:17,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:17,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:17:17,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:17:17,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 23:17:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:17,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 23:17:17,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:17,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822150216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:17:17,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:17:17,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-11-02 23:17:17,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223158725] [2021-11-02 23:17:17,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:17:17,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:17,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:17:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:17:17,999 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:18,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:18,051 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-02 23:17:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:17:18,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-02 23:17:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:18,052 INFO L225 Difference]: With dead ends: 15 [2021-11-02 23:17:18,052 INFO L226 Difference]: Without dead ends: 14 [2021-11-02 23:17:18,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-02 23:17:18,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-02 23:17:18,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-02 23:17:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:18,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-02 23:17:18,056 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2021-11-02 23:17:18,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:18,057 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-02 23:17:18,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:18,057 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-02 23:17:18,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-02 23:17:18,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:18,058 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 23:17:18,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 23:17:18,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:18,259 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 23:17:18,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2010663901, now seen corresponding path program 1 times [2021-11-02 23:17:18,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:18,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268305413] [2021-11-02 23:17:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:18,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:18,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:18,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268305413] [2021-11-02 23:17:18,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268305413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:18,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601911352] [2021-11-02 23:17:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:18,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:18,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:17:18,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:17:18,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 23:17:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:18,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 23:17:18,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 23:17:18,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601911352] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:18,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:17:18,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-11-02 23:17:18,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118935037] [2021-11-02 23:17:18,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 23:17:18,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:18,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 23:17:18,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:17:18,561 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:18,642 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-11-02 23:17:18,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:17:18,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-02 23:17:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:18,643 INFO L225 Difference]: With dead ends: 14 [2021-11-02 23:17:18,644 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 23:17:18,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-02 23:17:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 23:17:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 23:17:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 23:17:18,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-02 23:17:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:18,645 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 23:17:18,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:18,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 23:17:18,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 23:17:18,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-02 23:17:18,649 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-02 23:17:18,649 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-02 23:17:18,649 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-02 23:17:18,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 23:17:18,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:18,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 23:17:18,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 23:17:18,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 23:17:18,918 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-11-02 23:17:18,918 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-02 23:17:18,919 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-11-02 23:17:18,919 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-11-02 23:17:18,919 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-11-02 23:17:18,919 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-11-02 23:17:18,919 INFO L857 garLoopResultBuilder]: For program point L25-2(line 25) no Hoare annotation was computed. [2021-11-02 23:17:18,920 INFO L857 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2021-11-02 23:17:18,920 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-11-02 23:17:18,920 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-02 23:17:18,920 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-11-02 23:17:18,920 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-11-02 23:17:18,921 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-02 23:17:18,921 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-02 23:17:18,921 INFO L853 garLoopResultBuilder]: At program point L28(lines 19 29) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2021-11-02 23:17:18,921 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and (<= ULTIMATE.start_main_~j~0 2147483646) (<= ULTIMATE.start_main_~k~0 2147483647) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~k~0) .cse0) (and (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0) .cse0 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0)))) [2021-11-02 23:17:18,922 INFO L857 garLoopResultBuilder]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2021-11-02 23:17:18,922 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-11-02 23:17:18,925 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-02 23:17:18,927 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 23:17:18,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:17:18 BoogieIcfgContainer [2021-11-02 23:17:18,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 23:17:18,947 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 23:17:18,947 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 23:17:18,948 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 23:17:18,948 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:17:16" (3/4) ... [2021-11-02 23:17:18,953 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 23:17:18,964 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-02 23:17:18,964 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 23:17:18,964 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 23:17:18,964 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 23:17:19,009 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 23:17:19,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 23:17:19,013 INFO L168 Benchmark]: Toolchain (without parser) took 2958.66 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 57.5 MB in the beginning and 74.5 MB in the end (delta: -17.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-11-02 23:17:19,013 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 73.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:17:19,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.91 ms. Allocated memory is still 96.5 MB. Free memory was 57.4 MB in the beginning and 66.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 23:17:19,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.24 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 64.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:17:19,015 INFO L168 Benchmark]: Boogie Preprocessor took 19.30 ms. Allocated memory is still 96.5 MB. Free memory was 64.9 MB in the beginning and 64.0 MB in the end (delta: 860.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:17:19,015 INFO L168 Benchmark]: RCFGBuilder took 338.69 ms. Allocated memory is still 96.5 MB. Free memory was 64.0 MB in the beginning and 54.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 23:17:19,016 INFO L168 Benchmark]: TraceAbstraction took 2228.66 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 54.3 MB in the beginning and 76.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:17:19,016 INFO L168 Benchmark]: Witness Printer took 62.57 ms. Allocated memory is still 125.8 MB. Free memory was 76.6 MB in the beginning and 74.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:17:19,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 73.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.91 ms. Allocated memory is still 96.5 MB. Free memory was 57.4 MB in the beginning and 66.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.24 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 64.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.30 ms. Allocated memory is still 96.5 MB. Free memory was 64.9 MB in the beginning and 64.0 MB in the end (delta: 860.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 338.69 ms. Allocated memory is still 96.5 MB. Free memory was 64.0 MB in the beginning and 54.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2228.66 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 54.3 MB in the beginning and 76.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Witness Printer took 62.57 ms. Allocated memory is still 125.8 MB. Free memory was 76.6 MB in the beginning and 74.5 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 79 SDslu, 71 SDs, 0 SdLazy, 117 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 35, 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, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 27 HoareAnnotationTreeSize, 2 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 224 SizeOfPredicates, 7 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 3/14 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((j <= 2147483646 && k <= 2147483647) && j <= k) && n <= 2147483647) || ((n == k && n <= 2147483647) && n == j) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: n <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-11-02 23:17:19,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3298eafa-d947-42da-801c-9e72fcb53173/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE