./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI --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 32bit --witnessprinter.graph.data.programhash 90ff89d2ba0517af453003604f3ee5a230759bec .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:28,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:28,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:28,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:28,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:28,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:28,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:28,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:28,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:28,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:28,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:28,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:28,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:28,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:28,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:28,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:28,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:28,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:28,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:28,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:28,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:28,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:28,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:28,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:28,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:28,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:28,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:28,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:28,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:28,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:28,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:28,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:28,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:28,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:28,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:28,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:28,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:28,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:28,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:28,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:28,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:28,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-11 02:29:28,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:28,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:28,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:28,622 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:28,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:28,622 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:28,623 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:28,623 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:28,623 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:28,623 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:28,624 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:28,625 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:28,625 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:28,625 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:28,626 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:28,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:28,627 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:28,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:29:28,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:28,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:28,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:28,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:28,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:28,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:28,628 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:29:28,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:28,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:28,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:28,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:28,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:28,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:28,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:28,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:28,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:28,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:28,631 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:28,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:28,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:28,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:28,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:28,632 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_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90ff89d2ba0517af453003604f3ee5a230759bec [2021-10-11 02:29:28,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:28,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:28,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:28,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:28,988 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:28,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/recursive/McCarthy91-1.c [2021-10-11 02:29:29,058 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/data/605287231/e826f6fea2de48a09086ba03960354d1/FLAGffcca33e2 [2021-10-11 02:29:29,495 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:29,496 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/sv-benchmarks/c/recursive/McCarthy91-1.c [2021-10-11 02:29:29,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/data/605287231/e826f6fea2de48a09086ba03960354d1/FLAGffcca33e2 [2021-10-11 02:29:29,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/data/605287231/e826f6fea2de48a09086ba03960354d1 [2021-10-11 02:29:29,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:29,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:29,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:29,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:29,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:29,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:29" (1/1) ... [2021-10-11 02:29:29,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37780bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:29, skipping insertion in model container [2021-10-11 02:29:29,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:29" (1/1) ... [2021-10-11 02:29:29,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:29,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:30,111 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/sv-benchmarks/c/recursive/McCarthy91-1.c[749,762] [2021-10-11 02:29:30,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:30,146 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:30,160 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/sv-benchmarks/c/recursive/McCarthy91-1.c[749,762] [2021-10-11 02:29:30,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:30,174 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:30,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30 WrapperNode [2021-10-11 02:29:30,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:30,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:30,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:30,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:30,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (1/1) ... [2021-10-11 02:29:30,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (1/1) ... [2021-10-11 02:29:30,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:30,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:30,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:30,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:30,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (1/1) ... [2021-10-11 02:29:30,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (1/1) ... [2021-10-11 02:29:30,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (1/1) ... [2021-10-11 02:29:30,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (1/1) ... [2021-10-11 02:29:30,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (1/1) ... [2021-10-11 02:29:30,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (1/1) ... [2021-10-11 02:29:30,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (1/1) ... [2021-10-11 02:29:30,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:30,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:30,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:30,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:30,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:30,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:30,301 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2021-10-11 02:29:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2021-10-11 02:29:30,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:30,618 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:29:30,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:30 BoogieIcfgContainer [2021-10-11 02:29:30,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:30,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:30,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:30,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:30,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:29" (1/3) ... [2021-10-11 02:29:30,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188f357f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:30, skipping insertion in model container [2021-10-11 02:29:30,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:30" (2/3) ... [2021-10-11 02:29:30,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188f357f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:30, skipping insertion in model container [2021-10-11 02:29:30,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:30" (3/3) ... [2021-10-11 02:29:30,639 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91-1.c [2021-10-11 02:29:30,657 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:30,660 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:29:30,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:29:30,702 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:30,702 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:30,702 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:30,702 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:30,703 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:30,703 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:30,703 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:30,703 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-10-11 02:29:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:29:30,732 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:30,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:29:30,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:30,742 INFO L82 PathProgramCache]: Analyzing trace with hash 81867750, now seen corresponding path program 1 times [2021-10-11 02:29:30,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:30,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192789887] [2021-10-11 02:29:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:30,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192789887] [2021-10-11 02:29:30,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:30,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:30,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236564345] [2021-10-11 02:29:30,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:29:30,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:30,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:29:30,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:30,948 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2021-10-11 02:29:31,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:31,143 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-10-11 02:29:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:29:31,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2021-10-11 02:29:31,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:31,155 INFO L225 Difference]: With dead ends: 46 [2021-10-11 02:29:31,155 INFO L226 Difference]: Without dead ends: 41 [2021-10-11 02:29:31,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-11 02:29:31,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2021-10-11 02:29:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 02:29:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-10-11 02:29:31,234 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 5 [2021-10-11 02:29:31,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:31,235 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-10-11 02:29:31,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:31,235 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-10-11 02:29:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:29:31,235 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:31,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:29:31,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:31,237 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:31,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:31,241 INFO L82 PathProgramCache]: Analyzing trace with hash 81867910, now seen corresponding path program 1 times [2021-10-11 02:29:31,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:31,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488029581] [2021-10-11 02:29:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:31,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488029581] [2021-10-11 02:29:31,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:31,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:31,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906957360] [2021-10-11 02:29:31,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:31,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:31,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:31,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:31,312 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 3 states. [2021-10-11 02:29:31,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:31,344 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-10-11 02:29:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:31,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:29:31,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:31,349 INFO L225 Difference]: With dead ends: 40 [2021-10-11 02:29:31,350 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:29:31,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:29:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-10-11 02:29:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:29:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2021-10-11 02:29:31,381 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 5 [2021-10-11 02:29:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:31,382 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2021-10-11 02:29:31,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2021-10-11 02:29:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:29:31,383 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:31,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:29:31,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:29:31,386 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:31,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:31,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1757066977, now seen corresponding path program 1 times [2021-10-11 02:29:31,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:31,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874194906] [2021-10-11 02:29:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:31,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874194906] [2021-10-11 02:29:31,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:31,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:31,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640003273] [2021-10-11 02:29:31,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:31,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:31,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:31,454 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2021-10-11 02:29:31,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:31,483 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2021-10-11 02:29:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:31,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:29:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:31,487 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:29:31,487 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 02:29:31,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 02:29:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2021-10-11 02:29:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:29:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-10-11 02:29:31,507 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2021-10-11 02:29:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:31,507 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-10-11 02:29:31,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:31,507 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-10-11 02:29:31,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:29:31,508 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:31,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:29:31,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:29:31,509 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:31,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:31,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1757062012, now seen corresponding path program 1 times [2021-10-11 02:29:31,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:31,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963013043] [2021-10-11 02:29:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:31,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963013043] [2021-10-11 02:29:31,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:31,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:31,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691304100] [2021-10-11 02:29:31,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:29:31,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:31,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:29:31,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:31,561 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2021-10-11 02:29:31,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:31,639 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2021-10-11 02:29:31,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:29:31,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2021-10-11 02:29:31,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:31,640 INFO L225 Difference]: With dead ends: 50 [2021-10-11 02:29:31,641 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:29:31,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:29:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2021-10-11 02:29:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-10-11 02:29:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-10-11 02:29:31,651 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 6 [2021-10-11 02:29:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:31,651 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-10-11 02:29:31,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-10-11 02:29:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:29:31,652 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:31,652 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:31,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:29:31,653 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:31,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:31,653 INFO L82 PathProgramCache]: Analyzing trace with hash -2069777966, now seen corresponding path program 1 times [2021-10-11 02:29:31,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:31,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415812410] [2021-10-11 02:29:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:31,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415812410] [2021-10-11 02:29:31,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:31,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:31,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978257204] [2021-10-11 02:29:31,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:29:31,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:31,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:29:31,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:31,696 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2021-10-11 02:29:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:31,767 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2021-10-11 02:29:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:29:31,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:29:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:31,769 INFO L225 Difference]: With dead ends: 68 [2021-10-11 02:29:31,769 INFO L226 Difference]: Without dead ends: 67 [2021-10-11 02:29:31,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:31,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-11 02:29:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2021-10-11 02:29:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-10-11 02:29:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-10-11 02:29:31,781 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 10 [2021-10-11 02:29:31,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:31,781 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-10-11 02:29:31,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-10-11 02:29:31,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:29:31,782 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:31,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:31,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:29:31,783 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:31,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1247893030, now seen corresponding path program 1 times [2021-10-11 02:29:31,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:31,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092105635] [2021-10-11 02:29:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:31,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092105635] [2021-10-11 02:29:31,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:31,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:31,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801254868] [2021-10-11 02:29:31,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:31,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:31,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:31,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:31,824 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 4 states. [2021-10-11 02:29:31,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:31,836 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-10-11 02:29:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:31,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 02:29:31,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:31,837 INFO L225 Difference]: With dead ends: 58 [2021-10-11 02:29:31,837 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:29:31,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:29:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-11 02:29:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:29:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-10-11 02:29:31,846 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2021-10-11 02:29:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:31,846 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-10-11 02:29:31,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-10-11 02:29:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:29:31,847 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:31,847 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:31,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:29:31,847 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:31,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:31,848 INFO L82 PathProgramCache]: Analyzing trace with hash 691631841, now seen corresponding path program 1 times [2021-10-11 02:29:31,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:31,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708470602] [2021-10-11 02:29:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:29:31,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708470602] [2021-10-11 02:29:31,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307364644] [2021-10-11 02:29:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:31,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:29:31,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:32,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:32,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1908417006] [2021-10-11 02:29:32,463 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-11 02:29:32,463 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:32,471 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2021-10-11 02:29:32,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:29:32,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2021-10-11 02:29:32,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115184111] [2021-10-11 02:29:32,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-10-11 02:29:32,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:32,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-11 02:29:32,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-11 02:29:32,474 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 22 states. [2021-10-11 02:29:33,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:33,125 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2021-10-11 02:29:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-11 02:29:33,126 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 18 [2021-10-11 02:29:33,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:33,128 INFO L225 Difference]: With dead ends: 83 [2021-10-11 02:29:33,128 INFO L226 Difference]: Without dead ends: 82 [2021-10-11 02:29:33,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=486, Invalid=1320, Unknown=0, NotChecked=0, Total=1806 [2021-10-11 02:29:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-11 02:29:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 46. [2021-10-11 02:29:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-10-11 02:29:33,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2021-10-11 02:29:33,140 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 18 [2021-10-11 02:29:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:33,140 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2021-10-11 02:29:33,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-10-11 02:29:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2021-10-11 02:29:33,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:29:33,141 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:33,141 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:33,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-11 02:29:33,369 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:33,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:33,370 INFO L82 PathProgramCache]: Analyzing trace with hash -34244375, now seen corresponding path program 1 times [2021-10-11 02:29:33,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:33,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967131950] [2021-10-11 02:29:33,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:29:33,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967131950] [2021-10-11 02:29:33,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:33,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:29:33,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132308913] [2021-10-11 02:29:33,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:29:33,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:33,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:29:33,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:33,429 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2021-10-11 02:29:33,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:33,557 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2021-10-11 02:29:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:29:33,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2021-10-11 02:29:33,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:33,559 INFO L225 Difference]: With dead ends: 98 [2021-10-11 02:29:33,559 INFO L226 Difference]: Without dead ends: 97 [2021-10-11 02:29:33,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:29:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-11 02:29:33,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2021-10-11 02:29:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-10-11 02:29:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2021-10-11 02:29:33,580 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 19 [2021-10-11 02:29:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:33,580 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2021-10-11 02:29:33,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:29:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2021-10-11 02:29:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-11 02:29:33,582 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:33,582 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-11 02:29:33,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:29:33,583 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:33,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:33,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1236246034, now seen corresponding path program 1 times [2021-10-11 02:29:33,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:33,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077837740] [2021-10-11 02:29:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-11 02:29:33,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077837740] [2021-10-11 02:29:33,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:33,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:29:33,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279888732] [2021-10-11 02:29:33,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:29:33,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:33,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:29:33,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:29:33,660 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 8 states. [2021-10-11 02:29:33,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:33,819 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2021-10-11 02:29:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:29:33,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2021-10-11 02:29:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:33,821 INFO L225 Difference]: With dead ends: 92 [2021-10-11 02:29:33,821 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:33,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:29:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:33,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:33,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-11 02:29:33,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:33,824 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:33,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:29:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:33,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:33,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:29:33,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:29:34,073 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2021-10-11 02:29:34,172 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2021-10-11 02:29:34,173 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:29:34,173 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-11 02:29:34,173 INFO L262 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2021-10-11 02:29:34,173 INFO L262 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2021-10-11 02:29:34,173 INFO L262 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2021-10-11 02:29:34,173 INFO L262 CegarLoopResult]: For program point L29-6(line 29) no Hoare annotation was computed. [2021-10-11 02:29:34,174 INFO L258 CegarLoopResult]: At program point L29-7(lines 29 33) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-11 02:29:34,174 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2021-10-11 02:29:34,174 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:29:34,174 INFO L258 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2021-10-11 02:29:34,174 INFO L262 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-10-11 02:29:34,174 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-11 02:29:34,174 INFO L262 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-10-11 02:29:34,174 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 02:29:34,175 INFO L258 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (and (or (and (<= f91_~x 100) (<= 91 f91_~x)) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))) (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (and (<= 0 (+ f91_~x 2147483648)) (<= f91_~x |f91_#in~x|)) (not (<= |f91_#in~x| 2147483647)))) [2021-10-11 02:29:34,175 INFO L262 CegarLoopResult]: For program point f91EXIT(lines 17 23) no Hoare annotation was computed. [2021-10-11 02:29:34,175 INFO L262 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2021-10-11 02:29:34,175 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-11 02:29:34,175 INFO L262 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2021-10-11 02:29:34,175 INFO L258 CegarLoopResult]: At program point L21-4(line 21) the Hoare annotation is: (let ((.cse0 (<= 91 |f91_#t~ret7|)) (.cse1 (<= |f91_#t~ret7| 2147483648))) (and (or (and .cse0 (<= f91_~x 100) (<= 91 f91_~x) .cse1) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))) (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (and .cse0 (<= 0 (+ f91_~x 2147483648)) .cse1 (<= f91_~x |f91_#in~x|)) (not (<= |f91_#in~x| 2147483647))))) [2021-10-11 02:29:34,175 INFO L262 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2021-10-11 02:29:34,175 INFO L262 CegarLoopResult]: For program point f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-11 02:29:34,176 INFO L265 CegarLoopResult]: At program point f91ENTRY(lines 17 23) the Hoare annotation is: true [2021-10-11 02:29:34,176 INFO L262 CegarLoopResult]: For program point f91FINAL(lines 17 23) no Hoare annotation was computed. [2021-10-11 02:29:34,176 INFO L262 CegarLoopResult]: For program point f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-11 02:29:34,176 INFO L262 CegarLoopResult]: For program point f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-10-11 02:29:34,176 INFO L262 CegarLoopResult]: For program point f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-10-11 02:29:34,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:34 BoogieIcfgContainer [2021-10-11 02:29:34,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:34,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:34,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:34,191 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:34,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:30" (3/4) ... [2021-10-11 02:29:34,194 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:34,200 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2021-10-11 02:29:34,204 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:29:34,205 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:29:34,205 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:29:34,205 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:29:34,248 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1df01ea-267d-4574-9144-252de3afd7be/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:34,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:34,250 INFO L168 Benchmark]: Toolchain (without parser) took 4366.92 ms. Allocated memory was 109.1 MB in the beginning and 148.9 MB in the end (delta: 39.8 MB). Free memory was 69.3 MB in the beginning and 116.6 MB in the end (delta: -47.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:34,250 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory was 85.5 MB in the beginning and 85.4 MB in the end (delta: 117.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:34,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.11 ms. Allocated memory is still 109.1 MB. Free memory was 69.2 MB in the beginning and 84.5 MB in the end (delta: -15.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.04 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 82.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,252 INFO L168 Benchmark]: Boogie Preprocessor took 18.07 ms. Allocated memory is still 109.1 MB. Free memory was 82.8 MB in the beginning and 81.9 MB in the end (delta: 940.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:34,252 INFO L168 Benchmark]: RCFGBuilder took 395.22 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 65.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,253 INFO L168 Benchmark]: TraceAbstraction took 3568.09 ms. Allocated memory was 109.1 MB in the beginning and 148.9 MB in the end (delta: 39.8 MB). Free memory was 65.2 MB in the beginning and 119.8 MB in the end (delta: -54.6 MB). Peak memory consumption was 68.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,254 INFO L168 Benchmark]: Witness Printer took 58.13 ms. Allocated memory is still 148.9 MB. Free memory was 118.7 MB in the beginning and 116.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory was 85.5 MB in the beginning and 85.4 MB in the end (delta: 117.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.11 ms. Allocated memory is still 109.1 MB. Free memory was 69.2 MB in the beginning and 84.5 MB in the end (delta: -15.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.04 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 82.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.07 ms. Allocated memory is still 109.1 MB. Free memory was 82.8 MB in the beginning and 81.9 MB in the end (delta: 940.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 395.22 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 65.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3568.09 ms. Allocated memory was 109.1 MB in the beginning and 148.9 MB in the end (delta: 39.8 MB). Free memory was 65.2 MB in the beginning and 119.8 MB in the end (delta: -54.6 MB). Peak memory consumption was 68.4 MB. Max. memory is 16.1 GB. * Witness Printer took 58.13 ms. Allocated memory is still 148.9 MB. Free memory was 118.7 MB in the beginning and 116.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 321 SDslu, 295 SDs, 0 SdLazy, 617 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 70 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 59 PreInvPairs, 59 NumberOfFragments, 99 HoareAnnotationTreeSize, 59 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 371 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 6280 SizeOfPredicates, 4 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 56/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...