./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74ee724e3f951f784979d99a99eb9387abbe4e82f01cf4b5e019c1ec7f3be827 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:02:23,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:02:23,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:02:23,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:02:23,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:02:23,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:02:23,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:02:23,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:02:23,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:02:23,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:02:23,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:02:23,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:02:23,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:02:23,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:02:23,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:02:23,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:02:23,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:02:23,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:02:23,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:02:23,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:02:23,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:02:23,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:02:23,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:02:23,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:02:23,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:02:23,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:02:23,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:02:23,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:02:23,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:02:23,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:02:23,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:02:23,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:02:23,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:02:23,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:02:23,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:02:23,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:02:23,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:02:23,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:02:23,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:02:23,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:02:23,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:02:23,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:02:23,791 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:02:23,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:02:23,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:02:23,793 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:02:23,793 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:02:23,794 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:02:23,794 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:02:23,795 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:02:23,795 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:02:23,796 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:02:23,796 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:02:23,796 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:02:23,797 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:02:23,797 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:02:23,798 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:02:23,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:02:23,799 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:02:23,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:02:23,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:02:23,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:02:23,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:02:23,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:02:23,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:02:23,802 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:02:23,803 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:02:23,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:02:23,804 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:02:23,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:02:23,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:02:23,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:02:23,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:02:23,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:02:23,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:02:23,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:02:23,807 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:02:23,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:02:23,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:02:23,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:02:23,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:02:23,810 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_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74ee724e3f951f784979d99a99eb9387abbe4e82f01cf4b5e019c1ec7f3be827 [2021-11-07 01:02:24,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:02:24,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:02:24,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:02:24,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:02:24,141 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:02:24,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2021-11-07 01:02:24,242 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/data/b4c649aaf/93aed7d7ef1c46ce891159db2c773231/FLAGefb3f9aaa [2021-11-07 01:02:24,827 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:02:24,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2021-11-07 01:02:24,836 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/data/b4c649aaf/93aed7d7ef1c46ce891159db2c773231/FLAGefb3f9aaa [2021-11-07 01:02:25,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/data/b4c649aaf/93aed7d7ef1c46ce891159db2c773231 [2021-11-07 01:02:25,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:02:25,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:02:25,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:02:25,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:02:25,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:02:25,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98771ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25, skipping insertion in model container [2021-11-07 01:02:25,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:02:25,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:02:25,410 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533] [2021-11-07 01:02:25,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:02:25,442 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:02:25,468 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533] [2021-11-07 01:02:25,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:02:25,492 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:02:25,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25 WrapperNode [2021-11-07 01:02:25,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:02:25,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:02:25,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:02:25,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:02:25,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:02:25,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:02:25,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:02:25,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:02:25,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:02:25,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:02:25,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:02:25,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:02:25,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (1/1) ... [2021-11-07 01:02:25,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:02:25,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:25,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:02:25,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:02:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:02:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:02:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:02:25,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:02:26,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:02:26,064 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-07 01:02:26,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:02:26 BoogieIcfgContainer [2021-11-07 01:02:26,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:02:26,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:02:26,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:02:26,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:02:26,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:02:25" (1/3) ... [2021-11-07 01:02:26,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3191cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:02:26, skipping insertion in model container [2021-11-07 01:02:26,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:25" (2/3) ... [2021-11-07 01:02:26,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3191cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:02:26, skipping insertion in model container [2021-11-07 01:02:26,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:02:26" (3/3) ... [2021-11-07 01:02:26,092 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound5.c [2021-11-07 01:02:26,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:02:26,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:02:26,212 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:02:26,226 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:02:26,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:02:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:02:26,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:26,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:02:26,264 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:02:26,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:26,270 INFO L85 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2021-11-07 01:02:26,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:26,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894318287] [2021-11-07 01:02:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:26,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:26,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:26,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894318287] [2021-11-07 01:02:26,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894318287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:26,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:26,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:02:26,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850342934] [2021-11-07 01:02:26,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:02:26,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:26,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:02:26,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:02:26,459 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 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 2 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) [2021-11-07 01:02:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:26,479 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2021-11-07 01:02:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:02:26,480 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2021-11-07 01:02:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:26,490 INFO L225 Difference]: With dead ends: 57 [2021-11-07 01:02:26,491 INFO L226 Difference]: Without dead ends: 27 [2021-11-07 01:02:26,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:02:26,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-07 01:02:26,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-07 01:02:26,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-07 01:02:26,533 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2021-11-07 01:02:26,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:26,533 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-07 01:02:26,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2021-11-07 01:02:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-11-07 01:02:26,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:02:26,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:26,535 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:02:26,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:02:26,536 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:02:26,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:26,537 INFO L85 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2021-11-07 01:02:26,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:26,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291286053] [2021-11-07 01:02:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:26,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:26,648 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:26,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291286053] [2021-11-07 01:02:26,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291286053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:26,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:26,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:02:26,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377205796] [2021-11-07 01:02:26,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:02:26,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:02:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:02:26,654 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:26,830 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-11-07 01:02:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:02:26,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 01:02:26,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:26,833 INFO L225 Difference]: With dead ends: 54 [2021-11-07 01:02:26,833 INFO L226 Difference]: Without dead ends: 50 [2021-11-07 01:02:26,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:02:26,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-07 01:02:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2021-11-07 01:02:26,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2021-11-07 01:02:26,874 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 5 [2021-11-07 01:02:26,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:26,875 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2021-11-07 01:02:26,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:26,876 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2021-11-07 01:02:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:02:26,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:26,877 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:26,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:02:26,878 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:02:26,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash 225868067, now seen corresponding path program 1 times [2021-11-07 01:02:26,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:26,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594944255] [2021-11-07 01:02:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:26,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:26,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:02:26,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14577048] [2021-11-07 01:02:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:26,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:26,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:26,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:26,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:02:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:26,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:26,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:27,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:27,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:27,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594944255] [2021-11-07 01:02:27,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:02:27,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14577048] [2021-11-07 01:02:27,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14577048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:27,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:27,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:02:27,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191537108] [2021-11-07 01:02:27,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:02:27,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:02:27,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:02:27,285 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:27,418 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-11-07 01:02:27,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:02:27,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) Word has length 7 [2021-11-07 01:02:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:27,421 INFO L225 Difference]: With dead ends: 49 [2021-11-07 01:02:27,423 INFO L226 Difference]: Without dead ends: 45 [2021-11-07 01:02:27,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:02:27,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-07 01:02:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-11-07 01:02:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.303030303030303) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-11-07 01:02:27,446 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 7 [2021-11-07 01:02:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:27,446 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-11-07 01:02:27,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-11-07 01:02:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:02:27,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:27,448 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:27,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:27,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:27,674 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:02:27,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1983963802, now seen corresponding path program 1 times [2021-11-07 01:02:27,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:27,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974792799] [2021-11-07 01:02:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:27,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:27,697 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:02:27,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836942469] [2021-11-07 01:02:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:27,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:27,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:27,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:27,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:02:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:27,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:27,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:27,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:28,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:28,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974792799] [2021-11-07 01:02:28,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:02:28,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836942469] [2021-11-07 01:02:28,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836942469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:28,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:28,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:02:28,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138224233] [2021-11-07 01:02:28,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:02:28,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:28,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:02:28,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:02:28,048 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:31,261 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-11-07 01:02:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:02:31,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 01:02:31,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:31,263 INFO L225 Difference]: With dead ends: 71 [2021-11-07 01:02:31,264 INFO L226 Difference]: Without dead ends: 58 [2021-11-07 01:02:31,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:02:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-07 01:02:31,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2021-11-07 01:02:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-11-07 01:02:31,286 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 9 [2021-11-07 01:02:31,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:31,286 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-11-07 01:02:31,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:31,288 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-11-07 01:02:31,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:02:31,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:31,289 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:31,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 01:02:31,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:31,510 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:02:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:31,511 INFO L85 PathProgramCache]: Analyzing trace with hash 966688274, now seen corresponding path program 1 times [2021-11-07 01:02:31,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:31,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137932976] [2021-11-07 01:02:31,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:31,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:31,532 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:02:31,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434919620] [2021-11-07 01:02:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:31,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:31,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:31,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:31,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:02:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:31,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:02:31,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:31,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:02:31,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:31,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137932976] [2021-11-07 01:02:31,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:02:31,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434919620] [2021-11-07 01:02:31,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434919620] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:31,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1472868489] [2021-11-07 01:02:31,954 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-07 01:02:31,955 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:02:31,964 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:02:31,972 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:02:31,975 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:02:32,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,039 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:32,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:02:32,051 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:32,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:02:32,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:02:32,094 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-07 01:02:32,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:02:32,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:02:32,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:02:32,144 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:02:32,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:02:32,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:02:32,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:02:32,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:02:32,261 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:02:32,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,307 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-07 01:02:32,314 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:02:32,314 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:136, output treesize:111 [2021-11-07 01:02:32,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-07 01:02:32,346 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-07 01:02:32,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-07 01:02:32,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-07 01:02:32,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-07 01:02:32,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,410 INFO L185 QuantifierPusher]: treesize reduction 7, result has 94.5 percent of original size 121 [2021-11-07 01:02:32,418 INFO L180 QuantifierPusher]: treesize reduction 7, result has 94.9 percent of original size [2021-11-07 01:02:32,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-07 01:02:32,431 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-07 01:02:32,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-11-07 01:02:32,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,572 INFO L180 QuantifierPusher]: treesize reduction 32, result has 74.6 percent of original size [2021-11-07 01:02:32,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-07 01:02:32,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:02:32,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:02:32,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-11-07 01:02:32,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-07 01:02:32,857 INFO L180 QuantifierPusher]: treesize reduction 32, result has 74.6 percent of original size [2021-11-07 01:02:32,864 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-07 01:02:32,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:02:32,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:32,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:02:32,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:32,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:33,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:33,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:33,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:33,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:33,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:33,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:33,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:33,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-11-07 01:02:33,075 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:02:34,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1472868489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:34,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:02:34,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 3] total 12 [2021-11-07 01:02:34,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790597516] [2021-11-07 01:02:34,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:02:34,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:34,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:02:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:02:34,576 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:36,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:36,638 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-11-07 01:02:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:02:36,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 01:02:36,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:36,639 INFO L225 Difference]: With dead ends: 47 [2021-11-07 01:02:36,639 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:02:36,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:02:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:02:36,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:02:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:36,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:02:36,641 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-07 01:02:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:36,641 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:02:36,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:36,642 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:02:36,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:02:36,646 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:02:36,647 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:02:36,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:02:36,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:02:36,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:02:36,650 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:02:36,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:36,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:36,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:02:36,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:36,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:36,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:36,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:36,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:36,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:36,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:41,328 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-07 01:02:41,328 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-07 01:02:41,328 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-07 01:02:41,328 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:02:41,329 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-07 01:02:41,329 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-07 01:02:41,329 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 0 |#t~string4.base|)) (.cse1 (<= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse9 (* 2 ULTIMATE.start_main_~a~0)) (.cse3 (<= 0 |#t~string5.base|)) (.cse4 (<= ULTIMATE.start___VERIFIER_assert_~cond 1)) (.cse5 (<= 1 ~counter~0)) (.cse6 (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|)) (.cse7 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse8 (<= 0 |#t~string6.base|)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= |#t~string6.offset| 0)) (.cse12 (<= 0 |#StackHeapBarrier|)) (.cse13 (= 0 |#t~string4.offset|)) (.cse14 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 0 |#t~string5.offset|) (= ULTIMATE.start_main_~t~0 1) .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~t~0 (+ .cse9 1)) .cse10 (= ULTIMATE.start_main_~s~0 1) .cse11 (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)) .cse12 (<= |#t~string5.offset| 0) .cse13 .cse14) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 (+ .cse9 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) .cse3 (= |#t~string5.offset| 0) .cse4 .cse5 (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) .cse6 .cse7 (<= 3 ULTIMATE.start_main_~t~0) .cse8 (<= 1 ULTIMATE.start_main_~n~0) .cse10 .cse11 (<= 0 ULTIMATE.start_main_~a~0) .cse12 .cse13 .cse14))) [2021-11-07 01:02:41,329 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-11-07 01:02:41,330 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 0 |#t~string4.base|)) (.cse2 (<= 0 |#t~string5.base|)) (.cse3 (= |#t~string5.offset| 0)) (.cse4 (<= 1 ~counter~0)) (.cse5 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse6 (<= 0 |#t~string6.base|)) (.cse1 (* 2 ULTIMATE.start_main_~a~0)) (.cse7 (= |#NULL.offset| 0)) (.cse8 (= |#t~string6.offset| 0)) (.cse9 (<= 0 |#StackHeapBarrier|)) (.cse10 (= 0 |#t~string4.offset|)) (.cse11 (= |#NULL.base| 0))) (or (and .cse0 (<= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ .cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) .cse2 .cse3 (<= ULTIMATE.start___VERIFIER_assert_~cond 1) .cse4 (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|) .cse5 (<= 3 ULTIMATE.start_main_~t~0) .cse6 (<= 1 ULTIMATE.start_main_~n~0) .cse7 .cse8 (<= 0 ULTIMATE.start_main_~a~0) .cse9 .cse10 .cse11) (and .cse0 (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) .cse2 .cse3 (= ULTIMATE.start_main_~t~0 1) .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~t~0 (+ .cse1 1)) .cse7 (= ULTIMATE.start_main_~s~0 1) .cse8 (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)) .cse9 .cse10 .cse11))) [2021-11-07 01:02:41,330 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-11-07 01:02:41,330 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= 0 |#t~string4.base|)) (.cse2 (<= 0 |#t~string5.base|)) (.cse3 (= |#t~string5.offset| 0)) (.cse4 (<= 1 ~counter~0)) (.cse5 (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0))) (.cse6 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse7 (<= 0 |#t~string6.base|)) (.cse1 (* 2 ULTIMATE.start_main_~a~0)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (= |#t~string6.offset| 0)) (.cse10 (<= 0 |#StackHeapBarrier|)) (.cse11 (= 0 |#t~string4.offset|)) (.cse12 (= |#NULL.base| 0))) (or (and .cse0 (<= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ .cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) .cse2 .cse3 (<= ULTIMATE.start___VERIFIER_assert_~cond 1) .cse4 .cse5 (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|) .cse6 (<= 3 ULTIMATE.start_main_~t~0) .cse7 (<= 1 ULTIMATE.start_main_~n~0) .cse8 .cse9 (<= 0 ULTIMATE.start_main_~a~0) .cse10 .cse11 .cse12) (and .cse0 (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~t~0 (+ .cse1 1)) .cse8 (= ULTIMATE.start_main_~s~0 1) .cse9 (<= 1 ULTIMATE.start_main_~t~0) (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)) .cse10 .cse11 .cse12))) [2021-11-07 01:02:41,330 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-11-07 01:02:41,330 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (and (<= 0 |#t~string4.base|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ (* 2 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= 1 ~counter~0) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|) (<= ULTIMATE.start_main_~n~0 2147483647) (<= 3 ULTIMATE.start_main_~t~0) (<= 0 |#t~string6.base|) (<= 1 ULTIMATE.start_main_~n~0) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (<= 0 ULTIMATE.start_main_~a~0) (<= 0 |#StackHeapBarrier|) (= 0 |#t~string4.offset|) (= |#NULL.base| 0))) [2021-11-07 01:02:41,330 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:02:41,330 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-11-07 01:02:41,331 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (and (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-07 01:02:41,331 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-11-07 01:02:41,331 INFO L860 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-11-07 01:02:41,331 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-07 01:02:41,331 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-07 01:02:41,332 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-11-07 01:02:41,332 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-11-07 01:02:41,332 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-11-07 01:02:41,332 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-11-07 01:02:41,332 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-11-07 01:02:41,333 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2021-11-07 01:02:41,333 INFO L853 garLoopResultBuilder]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse0 (<= 0 |#t~string4.base|)) (.cse2 (<= 0 |#t~string5.base|)) (.cse3 (= |#t~string5.offset| 0)) (.cse4 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse5 (<= 0 |#t~string6.base|)) (.cse1 (* 2 ULTIMATE.start_main_~a~0)) (.cse6 (= |#NULL.offset| 0)) (.cse7 (= |#t~string6.offset| 0)) (.cse8 (<= 0 |#StackHeapBarrier|)) (.cse9 (= 0 |#t~string4.offset|)) (.cse10 (= |#NULL.base| 0))) (or (and .cse0 (<= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ .cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) .cse2 .cse3 (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= 1 ~counter~0) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|) .cse4 (<= 3 ULTIMATE.start_main_~t~0) .cse5 (<= 1 ULTIMATE.start_main_~n~0) .cse6 .cse7 (<= 0 ULTIMATE.start_main_~a~0) .cse8 .cse9 .cse10) (and .cse0 (<= 0 ~counter~0) .cse2 .cse3 (= ULTIMATE.start_main_~t~0 1) (<= ~counter~0 0) .cse4 .cse5 (= ULTIMATE.start_main_~t~0 (+ .cse1 1)) .cse6 (= ULTIMATE.start_main_~s~0 1) .cse7 (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)) .cse8 .cse9 .cse10))) [2021-11-07 01:02:41,333 INFO L857 garLoopResultBuilder]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2021-11-07 01:02:41,334 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-07 01:02:41,337 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-07 01:02:41,339 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:02:41,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:02:41 BoogieIcfgContainer [2021-11-07 01:02:41,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:02:41,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:02:41,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:02:41,378 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:02:41,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:02:26" (3/4) ... [2021-11-07 01:02:41,382 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:02:41,394 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-07 01:02:41,395 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 01:02:41,395 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:02:41,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:02:41,423 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && s == 2 * a + a * a + 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && 1 <= \old(cond)) && n <= 2147483647) && 3 <= t) && 0 <= "reach_error") && 1 <= n) && #NULL == 0) && "reach_error" == 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) || (((((((((((((((0 <= "0" && 0 <= counter) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && t == 1) && counter <= 0) && n <= 2147483647) && 0 <= "reach_error") && t == 2 * a + 1) && #NULL == 0) && s == 1) && "reach_error" == 0) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) [2021-11-07 01:02:41,424 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((a == 0 && t == 1) && s == 1) && !(0 == cond)) || (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && s == 2 * a + a * a + 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && 1 <= \old(cond)) && n <= 2147483647) && 3 <= t) && 0 <= "reach_error") && 1 <= n) && #NULL == 0) && "reach_error" == 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) [2021-11-07 01:02:41,424 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && 0 <= "sqrt1-ll.c") && cond <= 1) && 0 <= "sqrt1-ll.c") && t == 1) && 1 <= counter) && 1 <= \old(cond)) && n <= 2147483647) && 0 <= "reach_error") && t == 2 * a + 1) && #NULL == 0) && s == 1) && "reach_error" == 0) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && "sqrt1-ll.c" <= 0) && 0 == "0") && #NULL == 0) || (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && s == 2 * a + a * a + 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && 1 <= \old(cond)) && n <= 2147483647) && 3 <= t) && 0 <= "reach_error") && 1 <= n) && #NULL == 0) && "reach_error" == 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) [2021-11-07 01:02:41,424 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && s == 2 * a + a * a + 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && 1 <= \old(cond)) && n <= 2147483647) && 3 <= t) && 0 <= "reach_error") && 1 <= n) && #NULL == 0) && "reach_error" == 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) || ((((((((((((((((0 <= "0" && \old(cond) == cond) && \old(cond) == 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && t == 1) && 1 <= counter) && n <= 2147483647) && 0 <= "reach_error") && t == 2 * a + 1) && #NULL == 0) && s == 1) && "reach_error" == 0) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) [2021-11-07 01:02:41,425 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && s == 2 * a + a * a + 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && 1 <= \old(cond)) && n <= 2147483647) && 3 <= t) && 0 <= "reach_error") && 1 <= n) && #NULL == 0) && "reach_error" == 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) || (((((((((((((((((0 <= "0" && \old(cond) == cond) && \old(cond) == 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && n <= 2147483647) && 0 <= "reach_error") && t == 2 * a + 1) && #NULL == 0) && s == 1) && "reach_error" == 0) && 1 <= t) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) [2021-11-07 01:02:41,448 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:02:41,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:02:41,450 INFO L168 Benchmark]: Toolchain (without parser) took 16245.08 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 100.6 MB in the beginning and 78.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:41,450 INFO L168 Benchmark]: CDTParser took 1.14 ms. Allocated memory is still 96.5 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:02:41,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.30 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 102.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:41,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.62 ms. Allocated memory is still 125.8 MB. Free memory was 102.7 MB in the beginning and 101.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:41,452 INFO L168 Benchmark]: Boogie Preprocessor took 38.70 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 100.1 MB in the end (delta: 841.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:02:41,452 INFO L168 Benchmark]: RCFGBuilder took 451.34 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 88.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:41,453 INFO L168 Benchmark]: TraceAbstraction took 15307.13 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 88.4 MB in the beginning and 81.2 MB in the end (delta: 7.2 MB). Peak memory consumption was 76.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:41,454 INFO L168 Benchmark]: Witness Printer took 71.19 ms. Allocated memory is still 151.0 MB. Free memory was 81.2 MB in the beginning and 78.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:41,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14 ms. Allocated memory is still 96.5 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.30 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 102.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.62 ms. Allocated memory is still 125.8 MB. Free memory was 102.7 MB in the beginning and 101.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.70 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 100.1 MB in the end (delta: 841.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 451.34 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 88.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15307.13 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 88.4 MB in the beginning and 81.2 MB in the end (delta: 7.2 MB). Peak memory consumption was 76.6 MB. Max. memory is 16.1 GB. * Witness Printer took 71.19 ms. Allocated memory is still 151.0 MB. Free memory was 81.2 MB in the beginning and 78.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 15.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 111 SDslu, 101 SDs, 0 SdLazy, 181 SolverSat, 63 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, InterpolantAutomatonStates: 29, 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, 5 MinimizatonAttempts, 30 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 22 NumberOfFragments, 672 HoareAnnotationTreeSize, 7 FomulaSimplifications, 357 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 186 FormulaSimplificationTreeSizeReductionInter, 4.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 381 SizeOfPredicates, 9 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 2/6 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: OVERALL_TIME[ms]: 1122, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 27, TOOLS_POST_TIME[ms]: 576, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 27, TOOLS_QUANTIFIERELIM_TIME[ms]: 560, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 288, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 42, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 156, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 117, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 181, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 15, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 493, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 492, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 16, DAG_COMPRESSION_PROCESSED_NODES: 101, DAG_COMPRESSION_RETAINED_NODES: 37, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && 0 <= "sqrt1-ll.c") && cond <= 1) && 0 <= "sqrt1-ll.c") && t == 1) && 1 <= counter) && 1 <= \old(cond)) && n <= 2147483647) && 0 <= "reach_error") && t == 2 * a + 1) && #NULL == 0) && s == 1) && "reach_error" == 0) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && "sqrt1-ll.c" <= 0) && 0 == "0") && #NULL == 0) || (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && s == 2 * a + a * a + 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && 1 <= \old(cond)) && n <= 2147483647) && 3 <= t) && 0 <= "reach_error") && 1 <= n) && #NULL == 0) && "reach_error" == 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && s == 2 * a + a * a + 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && 1 <= \old(cond)) && n <= 2147483647) && 3 <= t) && 0 <= "reach_error") && 1 <= n) && #NULL == 0) && "reach_error" == 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) || (((((((((((((((((0 <= "0" && \old(cond) == cond) && \old(cond) == 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && n <= 2147483647) && 0 <= "reach_error") && t == 2 * a + 1) && #NULL == 0) && s == 1) && "reach_error" == 0) && 1 <= t) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a == 0 && t == 1) && s == 1) && !(0 == cond)) || (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && s == 2 * a + a * a + 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && 1 <= \old(cond)) && n <= 2147483647) && 3 <= t) && 0 <= "reach_error") && 1 <= n) && #NULL == 0) && "reach_error" == 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 2 * t + t * t + 1 == 4 * s && !(0 == cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && s == 2 * a + a * a + 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && 1 <= \old(cond)) && n <= 2147483647) && 3 <= t) && 0 <= "reach_error") && 1 <= n) && #NULL == 0) && "reach_error" == 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) || ((((((((((((((((0 <= "0" && \old(cond) == cond) && \old(cond) == 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && t == 1) && 1 <= counter) && n <= 2147483647) && 0 <= "reach_error") && t == 2 * a + 1) && #NULL == 0) && s == 1) && "reach_error" == 0) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((((((((((((((((0 <= "0" && \old(cond) <= 1) && 1 <= cond) && s == 2 * a + a * a + 1) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && 1 <= counter) && 2 * t + t * t + 1 == 4 * s) && 1 <= \old(cond)) && n <= 2147483647) && 3 <= t) && 0 <= "reach_error") && 1 <= n) && #NULL == 0) && "reach_error" == 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) || (((((((((((((((0 <= "0" && 0 <= counter) && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && t == 1) && counter <= 0) && n <= 2147483647) && 0 <= "reach_error") && t == 2 * a + 1) && #NULL == 0) && s == 1) && "reach_error" == 0) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 == "0") && #NULL == 0) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-07 01:02:41,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc7ad46-e397-4020-8fb7-6bab2866b688/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE