./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9b57d01e5f5efa477f018f1cacf9416655bf2c2d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2ccc1da5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 22:53:50,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 22:53:50,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 22:53:50,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 22:53:50,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 22:53:50,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 22:53:50,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 22:53:50,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 22:53:50,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 22:53:50,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 22:53:50,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 22:53:50,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 22:53:50,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 22:53:50,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 22:53:50,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 22:53:50,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 22:53:50,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 22:53:50,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 22:53:50,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 22:53:50,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 22:53:50,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 22:53:50,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 22:53:50,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 22:53:50,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 22:53:50,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 22:53:50,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 22:53:50,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 22:53:50,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 22:53:50,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 22:53:50,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 22:53:50,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 22:53:50,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 22:53:50,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 22:53:50,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 22:53:50,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 22:53:50,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 22:53:50,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 22:53:50,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 22:53:50,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 22:53:50,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 22:53:50,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 22:53:50,291 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-08-30 22:53:50,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 22:53:50,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 22:53:50,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 22:53:50,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 22:53:50,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 22:53:50,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 22:53:50,326 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 22:53:50,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 22:53:50,327 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 22:53:50,327 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 22:53:50,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 22:53:50,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 22:53:50,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 22:53:50,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-30 22:53:50,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 22:53:50,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-30 22:53:50,329 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-30 22:53:50,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 22:53:50,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-30 22:53:50,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 22:53:50,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-30 22:53:50,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 22:53:50,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 22:53:50,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 22:53:50,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:53:50,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 22:53:50,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 22:53:50,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-30 22:53:50,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 22:53:50,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 22:53:50,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-30 22:53:50,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 22:53:50,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b57d01e5f5efa477f018f1cacf9416655bf2c2d [2021-08-30 22:53:50,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 22:53:50,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 22:53:50,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 22:53:50,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 22:53:50,691 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 22:53:50,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2021-08-30 22:53:50,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400ac2d47/3746cbd4b00e4a13af76afccdbdc84da/FLAG174f0210b [2021-08-30 22:53:51,205 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 22:53:51,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2021-08-30 22:53:51,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400ac2d47/3746cbd4b00e4a13af76afccdbdc84da/FLAG174f0210b [2021-08-30 22:53:51,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400ac2d47/3746cbd4b00e4a13af76afccdbdc84da [2021-08-30 22:53:51,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 22:53:51,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-30 22:53:51,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 22:53:51,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 22:53:51,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 22:53:51,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f1f229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51, skipping insertion in model container [2021-08-30 22:53:51,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 22:53:51,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 22:53:51,769 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i[873,886] [2021-08-30 22:53:51,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:53:51,784 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 22:53:51,794 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i[873,886] [2021-08-30 22:53:51,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:53:51,808 INFO L208 MainTranslator]: Completed translation [2021-08-30 22:53:51,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51 WrapperNode [2021-08-30 22:53:51,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 22:53:51,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-30 22:53:51,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-30 22:53:51,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-30 22:53:51,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-30 22:53:51,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 22:53:51,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 22:53:51,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 22:53:51,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 22:53:51,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 22:53:51,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 22:53:51,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 22:53:51,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (1/1) ... [2021-08-30 22:53:51,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:53:51,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:53:51,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 22:53:51,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 22:53:51,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 22:53:51,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 22:53:51,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 22:53:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 22:53:52,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 22:53:52,097 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-30 22:53:52,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:53:52 BoogieIcfgContainer [2021-08-30 22:53:52,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 22:53:52,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 22:53:52,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 22:53:52,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 22:53:52,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:53:51" (1/3) ... [2021-08-30 22:53:52,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee585a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:53:52, skipping insertion in model container [2021-08-30 22:53:52,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:53:51" (2/3) ... [2021-08-30 22:53:52,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee585a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:53:52, skipping insertion in model container [2021-08-30 22:53:52,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:53:52" (3/3) ... [2021-08-30 22:53:52,106 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark22_conjunctive.i [2021-08-30 22:53:52,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 22:53:52,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-30 22:53:52,156 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 22:53:52,165 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, mConcurrency=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 [2021-08-30 22:53:52,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-30 22:53:52,190 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) [2021-08-30 22:53:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-30 22:53:52,196 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:52,197 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-30 22:53:52,197 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)] === [2021-08-30 22:53:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:52,208 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-08-30 22:53:52,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:52,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199295453] [2021-08-30 22:53:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:52,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:52,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:52,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199295453] [2021-08-30 22:53:52,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199295453] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:53:52,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:53:52,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:53:52,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535303283] [2021-08-30 22:53:52,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:53:52,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:52,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:53:52,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:53:52,450 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 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-08-30 22:53:52,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:53:52,552 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-08-30 22:53:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:53:52,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2021-08-30 22:53:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:53:52,560 INFO L225 Difference]: With dead ends: 34 [2021-08-30 22:53:52,561 INFO L226 Difference]: Without dead ends: 15 [2021-08-30 22:53:52,563 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:53:52,570 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.49ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:52,571 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 86.49ms Time] [2021-08-30 22:53:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-30 22:53:52,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-08-30 22:53:52,612 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) [2021-08-30 22:53:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-08-30 22:53:52,614 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-08-30 22:53:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:53:52,615 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-08-30 22:53:52,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-08-30 22:53:52,616 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-08-30 22:53:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-30 22:53:52,617 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:52,617 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-30 22:53:52,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 22:53:52,618 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)] === [2021-08-30 22:53:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:52,620 INFO L82 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-08-30 22:53:52,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:52,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212848274] [2021-08-30 22:53:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:52,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:52,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:52,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212848274] [2021-08-30 22:53:52,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212848274] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:53:52,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:53:52,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:53:52,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810487439] [2021-08-30 22:53:52,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:53:52,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:53:52,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:53:52,699 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-08-30 22:53:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:53:52,745 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-08-30 22:53:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:53:52,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2021-08-30 22:53:52,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:53:52,746 INFO L225 Difference]: With dead ends: 16 [2021-08-30 22:53:52,746 INFO L226 Difference]: Without dead ends: 15 [2021-08-30 22:53:52,747 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:53:52,748 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.49ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:52,748 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 42.49ms Time] [2021-08-30 22:53:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-30 22:53:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-30 22:53:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) 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) [2021-08-30 22:53:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-08-30 22:53:52,752 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2021-08-30 22:53:52,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:53:52,753 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-08-30 22:53:52,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-08-30 22:53:52,753 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-08-30 22:53:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 22:53:52,754 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:52,754 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:53:52,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 22:53:52,754 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)] === [2021-08-30 22:53:52,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:52,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-08-30 22:53:52,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:52,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135362274] [2021-08-30 22:53:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:52,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:52,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:52,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135362274] [2021-08-30 22:53:52,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135362274] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:53:52,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:53:52,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 22:53:52,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741196545] [2021-08-30 22:53:52,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 22:53:52,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:52,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 22:53:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 22:53:52,786 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-08-30 22:53:52,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:53:52,818 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-08-30 22:53:52,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 22:53:52,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2021-08-30 22:53:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:53:52,820 INFO L225 Difference]: With dead ends: 19 [2021-08-30 22:53:52,820 INFO L226 Difference]: Without dead ends: 18 [2021-08-30 22:53:52,820 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:53:52,822 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.58ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:52,822 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 22.58ms Time] [2021-08-30 22:53:52,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-30 22:53:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-08-30 22:53:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-08-30 22:53:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-08-30 22:53:52,825 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-08-30 22:53:52,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:53:52,826 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-08-30 22:53:52,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-08-30 22:53:52,826 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-08-30 22:53:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-30 22:53:52,827 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:52,827 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:53:52,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 22:53:52,827 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)] === [2021-08-30 22:53:52,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:52,828 INFO L82 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-08-30 22:53:52,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:52,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413113368] [2021-08-30 22:53:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:52,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:52,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:52,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413113368] [2021-08-30 22:53:52,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413113368] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:53:52,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:53:52,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 22:53:52,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197949747] [2021-08-30 22:53:52,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 22:53:52,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:52,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 22:53:52,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 22:53:52,857 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-08-30 22:53:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:53:52,911 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-08-30 22:53:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 22:53:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-08-30 22:53:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:53:52,912 INFO L225 Difference]: With dead ends: 16 [2021-08-30 22:53:52,912 INFO L226 Difference]: Without dead ends: 15 [2021-08-30 22:53:52,913 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:53:52,914 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.30ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.64ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:52,914 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.30ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 38.64ms Time] [2021-08-30 22:53:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-30 22:53:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-30 22:53:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) 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) [2021-08-30 22:53:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-08-30 22:53:52,918 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-08-30 22:53:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:53:52,918 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-08-30 22:53:52,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-08-30 22:53:52,932 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-08-30 22:53:52,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 22:53:52,933 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:52,933 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:53:52,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 22:53:52,934 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)] === [2021-08-30 22:53:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:52,934 INFO L82 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-08-30 22:53:52,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:52,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087040281] [2021-08-30 22:53:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:52,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:52,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:52,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087040281] [2021-08-30 22:53:52,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087040281] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:53:52,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678604685] [2021-08-30 22:53:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:52,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:52,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:53:52,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:53:52,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 22:53:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:53,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 22:53:53,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:53:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:53,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:53:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:53,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678604685] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:53:53,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:53:53,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-08-30 22:53:53,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734214443] [2021-08-30 22:53:53,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 22:53:53,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 22:53:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-30 22:53:53,268 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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) [2021-08-30 22:53:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:53:53,373 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-08-30 22:53:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 22:53:53,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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 [2021-08-30 22:53:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:53:53,377 INFO L225 Difference]: With dead ends: 26 [2021-08-30 22:53:53,377 INFO L226 Difference]: Without dead ends: 25 [2021-08-30 22:53:53,382 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 89.23ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-08-30 22:53:53,386 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.15ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.97ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:53,390 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 2.15ms Time], IncrementalHoareTripleChecker [14 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 62.97ms Time] [2021-08-30 22:53:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-30 22:53:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-08-30 22:53:53,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-08-30 22:53:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-30 22:53:53,394 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 10 [2021-08-30 22:53:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:53:53,394 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-30 22:53:53,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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) [2021-08-30 22:53:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-30 22:53:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 22:53:53,395 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:53,395 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:53:53,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-30 22:53:53,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:53,615 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:53:53,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:53,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1472766433, now seen corresponding path program 1 times [2021-08-30 22:53:53,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:53,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632278013] [2021-08-30 22:53:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:53,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:53,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:53,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632278013] [2021-08-30 22:53:53,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632278013] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:53:53,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619128600] [2021-08-30 22:53:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:53,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:53,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:53:53,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:53:53,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 22:53:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:53,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 22:53:53,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:53:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:53,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:53:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:53,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619128600] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:53:53,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:53:53,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-08-30 22:53:53,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535325943] [2021-08-30 22:53:53,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 22:53:53,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:53,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 22:53:53,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-30 22:53:53,896 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-08-30 22:53:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:53:53,980 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-08-30 22:53:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 22:53:53,980 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 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 11 [2021-08-30 22:53:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:53:53,982 INFO L225 Difference]: With dead ends: 26 [2021-08-30 22:53:53,982 INFO L226 Difference]: Without dead ends: 25 [2021-08-30 22:53:53,982 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 86.46ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-08-30 22:53:53,989 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.33ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:53,990 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 51.33ms Time] [2021-08-30 22:53:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-30 22:53:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-08-30 22:53:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 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) [2021-08-30 22:53:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-08-30 22:53:53,999 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2021-08-30 22:53:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:53:53,999 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-08-30 22:53:54,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-08-30 22:53:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-08-30 22:53:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 22:53:54,001 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:54,002 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-30 22:53:54,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 22:53:54,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-30 22:53:54,215 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:53:54,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:54,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-08-30 22:53:54,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:54,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248784451] [2021-08-30 22:53:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:54,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:54,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:54,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248784451] [2021-08-30 22:53:54,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248784451] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:53:54,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189644214] [2021-08-30 22:53:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:54,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:54,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:53:54,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:53:54,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 22:53:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:54,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 22:53:54,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:53:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:54,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:53:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:54,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189644214] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:53:54,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:53:54,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-08-30 22:53:54,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274575651] [2021-08-30 22:53:54,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 22:53:54,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 22:53:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-30 22:53:54,397 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-08-30 22:53:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:53:54,499 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-08-30 22:53:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 22:53:54,499 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 12 [2021-08-30 22:53:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:53:54,500 INFO L225 Difference]: With dead ends: 34 [2021-08-30 22:53:54,500 INFO L226 Difference]: Without dead ends: 33 [2021-08-30 22:53:54,500 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 65.99ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-30 22:53:54,501 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.47ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:54,501 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 60.47ms Time] [2021-08-30 22:53:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-30 22:53:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-08-30 22:53:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 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) [2021-08-30 22:53:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-08-30 22:53:54,505 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 12 [2021-08-30 22:53:54,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:53:54,505 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-08-30 22:53:54,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-08-30 22:53:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-08-30 22:53:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 22:53:54,506 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:54,506 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2021-08-30 22:53:54,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 22:53:54,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:54,707 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:53:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:54,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1418773263, now seen corresponding path program 2 times [2021-08-30 22:53:54,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:54,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74717384] [2021-08-30 22:53:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:54,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:54,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:54,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74717384] [2021-08-30 22:53:54,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74717384] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:53:54,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278539683] [2021-08-30 22:53:54,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 22:53:54,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:54,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:53:54,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:53:54,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 22:53:54,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 22:53:54,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:53:54,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 22:53:54,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:53:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:55,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:53:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:55,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278539683] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:53:55,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:53:55,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2021-08-30 22:53:55,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810430352] [2021-08-30 22:53:55,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-30 22:53:55,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-30 22:53:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2021-08-30 22:53:55,254 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 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) [2021-08-30 22:53:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:53:55,558 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-08-30 22:53:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-30 22:53:55,559 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 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 20 [2021-08-30 22:53:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:53:55,560 INFO L225 Difference]: With dead ends: 49 [2021-08-30 22:53:55,560 INFO L226 Difference]: Without dead ends: 48 [2021-08-30 22:53:55,560 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 343.09ms TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2021-08-30 22:53:55,561 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.78ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:55,561 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 217 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [40 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 120.78ms Time] [2021-08-30 22:53:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-30 22:53:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2021-08-30 22:53:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.2) internal successors, (48), 42 states have internal predecessors, (48), 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) [2021-08-30 22:53:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-08-30 22:53:55,566 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 20 [2021-08-30 22:53:55,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:53:55,566 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-08-30 22:53:55,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 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) [2021-08-30 22:53:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-08-30 22:53:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 22:53:55,567 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:55,568 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1] [2021-08-30 22:53:55,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-30 22:53:55,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:55,790 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:53:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:55,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1032298143, now seen corresponding path program 2 times [2021-08-30 22:53:55,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:55,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154721137] [2021-08-30 22:53:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:55,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:55,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:55,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154721137] [2021-08-30 22:53:55,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154721137] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:53:55,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925944081] [2021-08-30 22:53:55,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 22:53:55,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:55,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:53:55,889 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:53:55,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-30 22:53:55,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 22:53:55,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:53:55,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 22:53:55,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:53:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:56,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 22:53:56,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925944081] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:53:56,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 22:53:56,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2021-08-30 22:53:56,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110786611] [2021-08-30 22:53:56,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 22:53:56,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:56,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 22:53:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-08-30 22:53:56,111 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 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) [2021-08-30 22:53:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:53:56,216 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-08-30 22:53:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 22:53:56,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 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) Word has length 21 [2021-08-30 22:53:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:53:56,218 INFO L225 Difference]: With dead ends: 43 [2021-08-30 22:53:56,218 INFO L226 Difference]: Without dead ends: 42 [2021-08-30 22:53:56,218 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 148.96ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-08-30 22:53:56,219 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.58ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:56,219 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 110 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 56.58ms Time] [2021-08-30 22:53:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-30 22:53:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-08-30 22:53:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.1) internal successors, (44), 41 states have internal predecessors, (44), 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) [2021-08-30 22:53:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-08-30 22:53:56,223 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 21 [2021-08-30 22:53:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:53:56,224 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-08-30 22:53:56,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 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) [2021-08-30 22:53:56,224 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-08-30 22:53:56,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 22:53:56,225 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:56,225 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-08-30 22:53:56,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-30 22:53:56,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:56,444 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:53:56,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:56,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 2 times [2021-08-30 22:53:56,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:56,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866113552] [2021-08-30 22:53:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:56,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:56,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:56,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866113552] [2021-08-30 22:53:56,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866113552] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:53:56,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544837242] [2021-08-30 22:53:56,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 22:53:56,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:56,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:53:56,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:53:56,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-30 22:53:56,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 22:53:56,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:53:56,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 22:53:56,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:53:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:56,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:53:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:57,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544837242] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:53:57,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:53:57,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-08-30 22:53:57,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626620243] [2021-08-30 22:53:57,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-08-30 22:53:57,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:57,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-08-30 22:53:57,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2021-08-30 22:53:57,085 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 states have internal predecessors, (77), 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) [2021-08-30 22:53:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:53:57,421 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-08-30 22:53:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 22:53:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 states have internal predecessors, (77), 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 27 [2021-08-30 22:53:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:53:57,422 INFO L225 Difference]: With dead ends: 42 [2021-08-30 22:53:57,422 INFO L226 Difference]: Without dead ends: 41 [2021-08-30 22:53:57,423 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 479.37ms TimeCoverageRelationStatistics Valid=415, Invalid=1565, Unknown=0, NotChecked=0, Total=1980 [2021-08-30 22:53:57,424 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.20ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:57,424 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 291 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [54 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 123.20ms Time] [2021-08-30 22:53:57,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-30 22:53:57,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-08-30 22:53:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 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) [2021-08-30 22:53:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-08-30 22:53:57,428 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 27 [2021-08-30 22:53:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:53:57,428 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-08-30 22:53:57,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 states have internal predecessors, (77), 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) [2021-08-30 22:53:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-08-30 22:53:57,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-30 22:53:57,429 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:53:57,430 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1] [2021-08-30 22:53:57,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-30 22:53:57,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:57,639 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:53:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:53:57,639 INFO L82 PathProgramCache]: Analyzing trace with hash 915144177, now seen corresponding path program 3 times [2021-08-30 22:53:57,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:53:57,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090518562] [2021-08-30 22:53:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:53:57,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:53:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:53:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:57,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:53:57,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090518562] [2021-08-30 22:53:57,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090518562] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:53:57,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18335899] [2021-08-30 22:53:57,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 22:53:57,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:57,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:53:57,833 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:53:57,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-30 22:53:57,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-08-30 22:53:57,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:53:57,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-30 22:53:57,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:53:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:53:58,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:54:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:54:46,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18335899] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:54:46,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:54:46,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2021-08-30 22:54:46,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79160037] [2021-08-30 22:54:46,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-08-30 22:54:46,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:54:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-08-30 22:54:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1811, Unknown=19, NotChecked=0, Total=2162 [2021-08-30 22:54:46,303 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 47 states have internal predecessors, (116), 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) [2021-08-30 22:54:48,491 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse0 (+ |c_ULTIMATE.start_main_#t~post6| 1)) (.cse12 (+ (div (+ .cse1 2147483639) 2) 1)) (.cse11 (* 2 c_ULTIMATE.start_main_~y~0)) (.cse13 (* c_ULTIMATE.start_main_~y~0 (- 1)))) (and (<= .cse0 (div (+ .cse1 2147483646) 2)) (forall ((aux_div_v_ULTIMATE.start_main_~y~0_27_259 Int) (aux_div_v_ULTIMATE.start_main_~x~0_47_118 Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133 Int) (aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109 Int) (aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 Int) (aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133_393 Int) (aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 Int)) (let ((.cse4 (* 5 aux_div_v_ULTIMATE.start_main_~y~0_27_259)) (.cse9 (* 4 aux_div_v_ULTIMATE.start_main_~x~0_47_118)) (.cse5 (* 4 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71)) (.cse6 (* 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71)) (.cse10 (* 5 aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133_393)) (.cse7 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_47_118)) (.cse8 (* 5 aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109)) (.cse3 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133)) (.cse2 (div (+ (* aux_div_v_ULTIMATE.start_main_~x~0_47_118 (- 2)) (* aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 4) (* aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 2) 4) 4))) (or (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) .cse2) (<= aux_div_v_ULTIMATE.start_main_~x~0_47_118 0) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 (* 2 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71) (div (+ c_ULTIMATE.start_main_~x~0 (- 2147483642)) (- 2))) 2147483635) (<= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109 (+ aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 1)) (<= (+ 5 .cse3) .cse4) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse5 14 .cse6) (+ .cse7 .cse4)) (<= 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71) (<= (+ 5 .cse4) .cse8) (< aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 0) (<= (+ 2147483649 .cse5 .cse6) (+ .cse9 c_ULTIMATE.start_main_~x~0 .cse10 .cse3)) (<= (+ .cse9 c_ULTIMATE.start_main_~x~0 .cse10 .cse8) (+ .cse5 .cse6 2147483639)) (<= 2147483636 (+ c_ULTIMATE.start_main_~x~0 .cse10 .cse7 .cse2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0 .cse10 .cse7) 2147483630) (<= (+ 5 .cse8) .cse3) (<= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133 (+ aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133_393 1)) (<= aux_div_v_ULTIMATE.start_main_~y~0_27_259 (+ .cse2 1))))) (<= .cse11 .cse12) (<= c_ULTIMATE.start_main_~y~0 (div (+ .cse1 .cse13 2147483644) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0) 2147483646) (<= .cse0 (div .cse12 2)) (<= (+ c_ULTIMATE.start_main_~x~0 .cse11) 2147483646) (<= c_ULTIMATE.start_main_~y~0 (div (+ (div (+ .cse1 .cse13 2147483639) 2) (- 1)) 2)) (forall ((aux_div_aux_div_v_ULTIMATE.start_main_~y~0_26_97_58 Int)) (or (<= (div (+ c_ULTIMATE.start_main_~x~0 (- 2147483637) (* aux_div_aux_div_v_ULTIMATE.start_main_~y~0_26_97_58 5)) (- 2)) 0) (<= (+ (* 2 aux_div_aux_div_v_ULTIMATE.start_main_~y~0_26_97_58) 1) (div (+ (* |c_ULTIMATE.start_main_#t~post6| (- 1)) (* c_ULTIMATE.start_main_~x~0 (- 1)) 2147483634) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) aux_div_aux_div_v_ULTIMATE.start_main_~y~0_26_97_58))) (<= (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0) 2147483647) (forall ((v_ULTIMATE.start_main_~y~0_28 Int)) (or (forall ((aux_div_v_ULTIMATE.start_main_~x~0_48_60 Int) (aux_div_v_ULTIMATE.start_main_~y~0_27_259 Int) (aux_div_v_ULTIMATE.start_main_~x~0_47_118 Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133 Int) (aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109 Int) (aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 Int) (aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133_393 Int) (aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 Int)) (let ((.cse18 (* 4 aux_div_v_ULTIMATE.start_main_~x~0_47_118)) (.cse15 (* 5 aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133_393)) (.cse20 (* 4 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71)) (.cse21 (* 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71)) (.cse16 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_47_118)) (.cse22 (* 2 v_ULTIMATE.start_main_~y~0_28)) (.cse24 (* 5 aux_div_v_ULTIMATE.start_main_~y~0_27_259)) (.cse14 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_48_60)) (.cse19 (* 5 aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109)) (.cse23 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133)) (.cse17 (div (+ (* aux_div_v_ULTIMATE.start_main_~x~0_47_118 (- 2)) (* aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 4) (* aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 2) 4) 4))) (or (<= .cse14 (+ .cse15 6 .cse16 .cse17)) (<= (+ .cse15 .cse16 13 v_ULTIMATE.start_main_~y~0_28) .cse14) (<= aux_div_v_ULTIMATE.start_main_~x~0_47_118 0) (<= (+ .cse18 .cse15 .cse19 4) (+ .cse20 .cse21 .cse14)) (<= (+ .cse18 c_ULTIMATE.start_main_~x~0 .cse15 .cse19 v_ULTIMATE.start_main_~y~0_28) (+ .cse20 .cse21 2147483639)) (<= (+ c_ULTIMATE.start_main_~x~0 .cse15 .cse22 .cse16) 2147483630) (<= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109 (+ aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 1)) (<= (+ 5 .cse23) .cse24) (<= (+ v_ULTIMATE.start_main_~y~0_28 1) .cse17) (<= 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71) (<= (+ 7 .cse20 .cse21 .cse14) (+ .cse18 .cse15 .cse23)) (<= (+ .cse20 14 .cse21 v_ULTIMATE.start_main_~y~0_28) (+ .cse16 .cse24)) (<= (+ aux_div_v_ULTIMATE.start_main_~x~0_48_60 c_ULTIMATE.start_main_~x~0 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 (* 2 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71) .cse22) 2147483635) (<= (+ 5 .cse24) .cse19) (< aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_47_118_221_71 0) (< (+ c_ULTIMATE.start_main_~x~0 .cse14 v_ULTIMATE.start_main_~y~0_28) 2147483642) (<= (+ 5 .cse19) .cse23) (<= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133 (+ aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_27_259_109_133_393 1)) (<= aux_div_v_ULTIMATE.start_main_~y~0_27_259 (+ .cse17 1))))) (< (+ |c_ULTIMATE.start_main_#t~post6| 1) v_ULTIMATE.start_main_~y~0_28))) (<= |c_ULTIMATE.start_main_#t~post6| (div (+ (* |c_ULTIMATE.start_main_#t~post6| (- 1)) .cse1 2147483641) 2))))) is different from false [2021-08-30 22:55:37,491 WARN L210 SmtUtils]: Spent 27.15s on a formula simplification. DAG size of input: 141 DAG size of output: 134 [2021-08-30 22:55:47,953 WARN L210 SmtUtils]: Spent 10.31s on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2021-08-30 22:56:32,120 WARN L210 SmtUtils]: Spent 20.43s on a formula simplification. DAG size of input: 106 DAG size of output: 99 [2021-08-30 22:57:18,830 WARN L210 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-08-30 22:57:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:57:19,322 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2021-08-30 22:57:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-30 22:57:19,322 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 47 states have internal predecessors, (116), 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 40 [2021-08-30 22:57:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:57:19,325 INFO L225 Difference]: With dead ends: 82 [2021-08-30 22:57:19,325 INFO L226 Difference]: Without dead ends: 81 [2021-08-30 22:57:19,327 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 195290.15ms TimeCoverageRelationStatistics Valid=862, Invalid=3382, Unknown=50, NotChecked=128, Total=4422 [2021-08-30 22:57:19,327 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 150.99ms IncrementalHoareTripleChecker+Time [2021-08-30 22:57:19,328 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 428 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [45 Valid, 198 Invalid, 0 Unknown, 185 Unchecked, 150.99ms Time] [2021-08-30 22:57:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-08-30 22:57:19,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-08-30 22:57:19,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 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) [2021-08-30 22:57:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2021-08-30 22:57:19,340 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 40 [2021-08-30 22:57:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:57:19,341 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2021-08-30 22:57:19,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 47 states have internal predecessors, (116), 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) [2021-08-30 22:57:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2021-08-30 22:57:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-08-30 22:57:19,346 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:57:19,346 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1] [2021-08-30 22:57:19,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-30 22:57:19,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:57:19,569 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:57:19,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:57:19,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1816526833, now seen corresponding path program 4 times [2021-08-30 22:57:19,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:57:19,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248995305] [2021-08-30 22:57:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:57:19,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:57:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:57:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:57:20,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:57:20,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248995305] [2021-08-30 22:57:20,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248995305] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:57:20,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947663397] [2021-08-30 22:57:20,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-30 22:57:20,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:57:20,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:57:20,116 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:57:20,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-30 22:57:20,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-30 22:57:20,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:57:20,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 48 conjunts are in the unsatisfiable core [2021-08-30 22:57:20,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:57:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:57:21,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 23:00:31,527 WARN L228 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-08-30 23:00:31,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-08-30 23:00:31,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-30 23:00:31,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-08-30 23:00:31,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784359140] [2021-08-30 23:00:31,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-08-30 23:00:31,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:00:31,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-08-30 23:00:31,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1106, Invalid=7028, Unknown=56, NotChecked=0, Total=8190 [2021-08-30 23:00:31,531 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 33 states, 32 states have (on average 2.5) internal successors, (80), 33 states have internal predecessors, (80), 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) [2021-08-30 23:00:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-30 23:00:31,536 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2579 ImplicationChecksByTransitivity, 156961.05ms TimeCoverageRelationStatistics Valid=1106, Invalid=7028, Unknown=56, NotChecked=0, Total=8190 [2021-08-30 23:00:31,536 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-08-30 23:00:31,537 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.02ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-08-30 23:00:31,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-08-30 23:00:31,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-08-30 23:00:31,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-30 23:00:31,738 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2ccc1da5 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:863) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:779) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-30 23:00:31,741 INFO L158 Benchmark]: Toolchain (without parser) took 400109.95ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 43.6MB in the beginning and 55.5MB in the end (delta: -12.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-08-30 23:00:31,741 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 46.1MB. Free memory was 28.4MB in the beginning and 28.3MB in the end (delta: 51.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 23:00:31,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.41ms. Allocated memory is still 58.7MB. Free memory was 43.4MB in the beginning and 34.1MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 23:00:31,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.38ms. Allocated memory is still 58.7MB. Free memory was 34.1MB in the beginning and 42.3MB in the end (delta: -8.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 23:00:31,742 INFO L158 Benchmark]: Boogie Preprocessor took 35.10ms. Allocated memory is still 58.7MB. Free memory was 42.3MB in the beginning and 41.3MB in the end (delta: 968.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 23:00:31,742 INFO L158 Benchmark]: RCFGBuilder took 211.98ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 33.1MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-30 23:00:31,742 INFO L158 Benchmark]: TraceAbstraction took 399640.42ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 32.5MB in the beginning and 55.5MB in the end (delta: -23.0MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-08-30 23:00:31,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 46.1MB. Free memory was 28.4MB in the beginning and 28.3MB in the end (delta: 51.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.41ms. Allocated memory is still 58.7MB. Free memory was 43.4MB in the beginning and 34.1MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.38ms. Allocated memory is still 58.7MB. Free memory was 34.1MB in the beginning and 42.3MB in the end (delta: -8.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.10ms. Allocated memory is still 58.7MB. Free memory was 42.3MB in the beginning and 41.3MB in the end (delta: 968.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 211.98ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 33.1MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 399640.42ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 32.5MB in the beginning and 55.5MB in the end (delta: -23.0MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2ccc1da5 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2ccc1da5: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...