./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrspn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrspn.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0c74f0cc26425c1a044a70e86941b5dd82b132ff ..................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:05:39,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:05:39,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:05:39,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:05:39,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:05:39,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:05:39,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:05:39,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:05:39,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:05:39,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:05:39,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:05:39,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:05:39,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:05:39,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:05:39,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:05:39,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:05:39,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:05:39,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:05:39,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:05:39,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:05:39,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:05:39,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:05:39,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:05:39,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:05:39,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:05:39,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:05:39,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:05:39,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:05:39,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:05:39,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:05:39,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:05:39,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:05:39,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:05:39,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:05:39,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:05:39,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:05:39,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:05:39,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:05:39,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:05:39,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:05:39,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:05:39,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-16 02:05:39,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:05:39,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:05:39,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:05:39,760 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:05:39,760 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:05:39,761 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:05:39,761 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:05:39,761 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:05:39,762 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:05:39,762 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:05:39,771 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:05:39,771 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:05:39,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:05:39,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:05:39,772 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:05:39,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:05:39,774 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:05:39,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:05:39,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:05:39,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:05:39,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:05:39,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:05:39,776 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-16 02:05:39,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:05:39,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:05:39,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:05:39,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:05:39,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:05:39,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:05:39,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:05:39,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:05:39,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:05:39,781 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:05:39,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:05:39,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:05:39,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:05:39,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:05:39,783 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c74f0cc26425c1a044a70e86941b5dd82b132ff [2021-10-16 02:05:40,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:05:40,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:05:40,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:05:40,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:05:40,144 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:05:40,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/termination-crafted-lit/cstrspn.c [2021-10-16 02:05:40,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/data/7ca441e92/2dd5ae5432a0444fb0813b6abd608913/FLAGe7fa49c5a [2021-10-16 02:05:40,909 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:05:40,909 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/sv-benchmarks/c/termination-crafted-lit/cstrspn.c [2021-10-16 02:05:40,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/data/7ca441e92/2dd5ae5432a0444fb0813b6abd608913/FLAGe7fa49c5a [2021-10-16 02:05:41,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/data/7ca441e92/2dd5ae5432a0444fb0813b6abd608913 [2021-10-16 02:05:41,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:05:41,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:05:41,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:05:41,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:05:41,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:05:41,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6141cffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41, skipping insertion in model container [2021-10-16 02:05:41,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:05:41,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:05:41,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:05:41,553 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:05:41,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:05:41,587 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:05:41,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41 WrapperNode [2021-10-16 02:05:41,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:05:41,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:05:41,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:05:41,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:05:41,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:05:41,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:05:41,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:05:41,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:05:41,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:05:41,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:05:41,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:05:41,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:05:41,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (1/1) ... [2021-10-16 02:05:41,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:05:41,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:05:41,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:05:41,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:05:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:05:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:05:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:05:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:05:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:05:42,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:05:42,255 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 02:05:42,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:05:42 BoogieIcfgContainer [2021-10-16 02:05:42,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:05:42,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:05:42,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:05:42,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:05:42,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:05:41" (1/3) ... [2021-10-16 02:05:42,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2784ce55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:05:42, skipping insertion in model container [2021-10-16 02:05:42,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:41" (2/3) ... [2021-10-16 02:05:42,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2784ce55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:05:42, skipping insertion in model container [2021-10-16 02:05:42,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:05:42" (3/3) ... [2021-10-16 02:05:42,270 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrspn.c [2021-10-16 02:05:42,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:05:42,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-16 02:05:42,366 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:05:42,375 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 [2021-10-16 02:05:42,379 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-16 02:05:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 25 states have internal predecessors, (30), 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) [2021-10-16 02:05:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 02:05:42,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:42,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 02:05:42,421 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-16 02:05:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:42,432 INFO L82 PathProgramCache]: Analyzing trace with hash 3729, now seen corresponding path program 1 times [2021-10-16 02:05:42,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:42,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996630051] [2021-10-16 02:05:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:42,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:42,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:42,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996630051] [2021-10-16 02:05:42,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996630051] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:42,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:42,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:05:42,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119841103] [2021-10-16 02:05:42,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:05:42,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:42,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:05:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:05:42,708 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 25 states have internal predecessors, (30), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-16 02:05:42,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:42,767 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-10-16 02:05:42,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:05:42,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-16 02:05:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:42,779 INFO L225 Difference]: With dead ends: 35 [2021-10-16 02:05:42,780 INFO L226 Difference]: Without dead ends: 13 [2021-10-16 02:05:42,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:05:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-16 02:05:42,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-16 02:05:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-10-16 02:05:42,821 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 2 [2021-10-16 02:05:42,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:42,822 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-10-16 02:05:42,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-16 02:05:42,822 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-10-16 02:05:42,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:05:42,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:42,823 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:05:42,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:05:42,824 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-16 02:05:42,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:42,825 INFO L82 PathProgramCache]: Analyzing trace with hash 115641, now seen corresponding path program 1 times [2021-10-16 02:05:42,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:42,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140736785] [2021-10-16 02:05:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:42,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:42,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:42,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140736785] [2021-10-16 02:05:42,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140736785] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:42,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:42,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:05:42,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884052665] [2021-10-16 02:05:42,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:05:42,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:42,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:05:42,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:05:42,864 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-16 02:05:42,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:42,890 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-16 02:05:42,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:05:42,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-16 02:05:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:42,892 INFO L225 Difference]: With dead ends: 13 [2021-10-16 02:05:42,892 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:05:42,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:05:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:05:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 02:05:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:42,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-16 02:05:42,897 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 3 [2021-10-16 02:05:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:42,898 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-16 02:05:42,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-16 02:05:42,898 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-16 02:05:42,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:05:42,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:42,899 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:05:42,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:05:42,900 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-16 02:05:42,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:42,901 INFO L82 PathProgramCache]: Analyzing trace with hash 111132411, now seen corresponding path program 1 times [2021-10-16 02:05:42,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:42,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768658221] [2021-10-16 02:05:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:42,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:42,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:42,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768658221] [2021-10-16 02:05:42,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768658221] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:42,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:42,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:05:42,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145790627] [2021-10-16 02:05:42,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:05:42,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:42,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:05:42,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:05:42,990 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-16 02:05:43,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:43,016 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-16 02:05:43,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:05:43,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2021-10-16 02:05:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:43,019 INFO L225 Difference]: With dead ends: 11 [2021-10-16 02:05:43,019 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:05:43,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:05:43,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:05:43,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:05:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:43,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:05:43,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-16 02:05:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:43,022 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:05:43,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-16 02:05:43,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:05:43,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:05:43,026 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:05:43,027 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:05:43,028 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:05:43,028 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:05:43,028 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:05:43,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:05:43,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:05:43,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:05:43,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:05:43,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:05:43,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:05:43,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:05:43,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:05:43,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:05:43,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:05:43,106 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-16 02:05:43,107 INFO L857 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-10-16 02:05:43,112 INFO L853 garLoopResultBuilder]: At program point L31-4(lines 31 38) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2021-10-16 02:05:43,112 INFO L857 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-10-16 02:05:43,113 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-16 02:05:43,113 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-16 02:05:43,113 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-16 02:05:43,114 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:05:43,114 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-16 02:05:43,116 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-16 02:05:43,117 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:05:43,117 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-16 02:05:43,117 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-10-16 02:05:43,118 INFO L857 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-10-16 02:05:43,118 INFO L857 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-10-16 02:05:43,118 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-16 02:05:43,119 INFO L853 garLoopResultBuilder]: At program point L34-5(lines 34 35) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2021-10-16 02:05:43,119 INFO L857 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-10-16 02:05:43,119 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-16 02:05:43,121 INFO L853 garLoopResultBuilder]: At program point L18-1(line 18) the Hoare annotation is: (and (<= 1 ULTIMATE.start_build_nondet_String_~length~0) (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647)) [2021-10-16 02:05:43,122 INFO L857 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-10-16 02:05:43,122 INFO L853 garLoopResultBuilder]: At program point L18-3(line 18) the Hoare annotation is: (and (<= 1 ULTIMATE.start_build_nondet_String_~length~0) (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647)) [2021-10-16 02:05:43,122 INFO L857 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-10-16 02:05:43,123 INFO L857 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-10-16 02:05:43,124 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-16 02:05:43,124 INFO L853 garLoopResultBuilder]: At program point L39(lines 26 40) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2021-10-16 02:05:43,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:05:43,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:05:43 BoogieIcfgContainer [2021-10-16 02:05:43,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:05:43,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:05:43,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:05:43,157 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:05:43,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:05:42" (3/4) ... [2021-10-16 02:05:43,162 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:05:43,179 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-16 02:05:43,179 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:05:43,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:05:43,261 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:05:43,262 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:05:43,264 INFO L168 Benchmark]: Toolchain (without parser) took 1986.15 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 69.9 MB in the beginning and 85.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:43,265 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory is still 52.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:05:43,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.59 ms. Allocated memory is still 98.6 MB. Free memory was 69.7 MB in the beginning and 74.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:43,266 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.36 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 72.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:43,267 INFO L168 Benchmark]: Boogie Preprocessor took 48.31 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 71.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:43,267 INFO L168 Benchmark]: RCFGBuilder took 570.13 ms. Allocated memory is still 98.6 MB. Free memory was 71.2 MB in the beginning and 56.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:43,268 INFO L168 Benchmark]: TraceAbstraction took 893.96 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 56.2 MB in the beginning and 88.7 MB in the end (delta: -32.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:43,269 INFO L168 Benchmark]: Witness Printer took 105.36 ms. Allocated memory is still 134.2 MB. Free memory was 88.4 MB in the beginning and 85.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:43,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory is still 52.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.59 ms. Allocated memory is still 98.6 MB. Free memory was 69.7 MB in the beginning and 74.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.36 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 72.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.31 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 71.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 570.13 ms. Allocated memory is still 98.6 MB. Free memory was 71.2 MB in the beginning and 56.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 893.96 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 56.2 MB in the beginning and 88.7 MB in the end (delta: -32.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 105.36 ms. Allocated memory is still 134.2 MB. Free memory was 88.4 MB in the beginning and 85.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 781.4ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 12.6ms, AutomataDifference: 157.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 73.7ms, InitialAbstractionConstructionTime: 29.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 32 SDslu, 0 SDs, 0 SdLazy, 28 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 23 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 21.2ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 41.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 18.6ms SsaConstructionTime, 61.3ms SatisfiabilityAnalysisTime, 124.5ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: length <= 2147483647 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 <= length && length <= 2147483647 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 <= length && length <= 2147483647 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: length <= 2147483647 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: length <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-10-16 02:05:43,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f63137-ccd7-4a08-a29f-34cebd0e8fcb/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...