./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/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_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE --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 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:41:54,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:41:54,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:41:54,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:41:54,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:41:54,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:41:54,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:41:54,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:41:54,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:41:54,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:41:54,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:41:54,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:41:54,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:41:54,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:41:54,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:41:54,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:41:54,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:41:54,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:41:54,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:41:54,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:41:54,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:41:54,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:41:54,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:41:54,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:41:54,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:41:54,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:41:54,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:41:54,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:41:54,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:41:54,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:41:54,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:41:54,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:41:54,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:41:54,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:41:54,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:41:54,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:41:54,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:41:54,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:41:54,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:41:54,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:41:54,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:41:54,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:41:54,871 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:41:54,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:41:54,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:41:54,873 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:41:54,873 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:41:54,873 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:41:54,874 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:41:54,874 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:41:54,874 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:41:54,874 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:41:54,875 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:41:54,876 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:41:54,876 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:41:54,876 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:41:54,876 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:41:54,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:41:54,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:41:54,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:41:54,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:41:54,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:41:54,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:41:54,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:41:54,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:41:54,879 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:41:54,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:41:54,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:41:54,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:41:54,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:41:54,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:41:54,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:41:54,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:41:54,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:41:54,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:41:54,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:41:54,882 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:41:54,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:41:54,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:41:54,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:41:54,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:41:54,883 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_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74ee724e3f951f784979d99a99eb9387abbe4e82f01cf4b5e019c1ec7f3be827 [2021-10-24 10:41:55,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:41:55,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:41:55,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:41:55,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:41:55,192 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:41:55,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2021-10-24 10:41:55,254 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/data/d1ea1dea4/b53e4f4873514ecebb8fcf3fb81a7241/FLAGd75ecd9f0 [2021-10-24 10:41:55,639 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:41:55,640 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2021-10-24 10:41:55,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/data/d1ea1dea4/b53e4f4873514ecebb8fcf3fb81a7241/FLAGd75ecd9f0 [2021-10-24 10:41:56,042 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/data/d1ea1dea4/b53e4f4873514ecebb8fcf3fb81a7241 [2021-10-24 10:41:56,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:41:56,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:41:56,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:41:56,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:41:56,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:41:56,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa680ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56, skipping insertion in model container [2021-10-24 10:41:56,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:41:56,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:41:56,292 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_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533] [2021-10-24 10:41:56,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:41:56,339 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:41:56,363 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_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533] [2021-10-24 10:41:56,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:41:56,396 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:41:56,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56 WrapperNode [2021-10-24 10:41:56,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:41:56,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:41:56,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:41:56,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:41:56,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:41:56,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:41:56,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:41:56,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:41:56,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:41:56,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:41:56,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:41:56,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:41:56,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (1/1) ... [2021-10-24 10:41:56,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:41:56,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:41:56,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:41:56,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:41:56,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:41:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:41:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:41:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:41:56,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:41:56,803 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-24 10:41:56,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:56 BoogieIcfgContainer [2021-10-24 10:41:56,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:41:56,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:41:56,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:41:56,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:41:56,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:41:56" (1/3) ... [2021-10-24 10:41:56,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ba90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:56, skipping insertion in model container [2021-10-24 10:41:56,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:56" (2/3) ... [2021-10-24 10:41:56,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ba90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:56, skipping insertion in model container [2021-10-24 10:41:56,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:56" (3/3) ... [2021-10-24 10:41:56,814 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound5.c [2021-10-24 10:41:56,819 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:41:56,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-24 10:41:56,868 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:41:56,875 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 [2021-10-24 10:41:56,875 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 10:41:56,890 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) [2021-10-24 10:41:56,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:41:56,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:41:56,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:41:56,896 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)] === [2021-10-24 10:41:56,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:41:56,902 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2021-10-24 10:41:56,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:41:56,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299424356] [2021-10-24 10:41:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:41:56,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:41:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:41:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:41:57,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:41:57,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299424356] [2021-10-24 10:41:57,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299424356] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:41:57,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:41:57,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:41:57,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276358259] [2021-10-24 10:41:57,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:41:57,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:41:57,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:41:57,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:41:57,125 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) [2021-10-24 10:41:57,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:41:57,147 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2021-10-24 10:41:57,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:41:57,149 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 [2021-10-24 10:41:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:41:57,157 INFO L225 Difference]: With dead ends: 57 [2021-10-24 10:41:57,157 INFO L226 Difference]: Without dead ends: 27 [2021-10-24 10:41:57,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:41:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-24 10:41:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-24 10:41:57,197 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) [2021-10-24 10:41:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-24 10:41:57,201 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2021-10-24 10:41:57,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:41:57,212 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-24 10:41:57,213 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) [2021-10-24 10:41:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-24 10:41:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:41:57,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:41:57,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:41:57,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:41:57,216 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)] === [2021-10-24 10:41:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:41:57,222 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2021-10-24 10:41:57,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:41:57,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884777291] [2021-10-24 10:41:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:41:57,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:41:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:41:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:41:57,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:41:57,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884777291] [2021-10-24 10:41:57,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884777291] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:41:57,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:41:57,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:41:57,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686745837] [2021-10-24 10:41:57,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:41:57,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:41:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:41:57,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:41:57,414 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) [2021-10-24 10:41:57,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:41:57,529 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-10-24 10:41:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:41:57,530 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 [2021-10-24 10:41:57,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:41:57,531 INFO L225 Difference]: With dead ends: 54 [2021-10-24 10:41:57,532 INFO L226 Difference]: Without dead ends: 50 [2021-10-24 10:41:57,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:41:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-24 10:41:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2021-10-24 10:41:57,539 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) [2021-10-24 10:41:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2021-10-24 10:41:57,540 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 5 [2021-10-24 10:41:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:41:57,541 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2021-10-24 10:41:57,541 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) [2021-10-24 10:41:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2021-10-24 10:41:57,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 10:41:57,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:41:57,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:41:57,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:41:57,546 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)] === [2021-10-24 10:41:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:41:57,547 INFO L82 PathProgramCache]: Analyzing trace with hash 225868067, now seen corresponding path program 1 times [2021-10-24 10:41:57,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:41:57,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182144846] [2021-10-24 10:41:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:41:57,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:41:57,587 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:41:57,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402127740] [2021-10-24 10:41:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:41:57,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:41:57,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:41:57,598 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:41:57,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:41:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:41:57,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:41:57,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:41:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:41:57,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:41:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:41:57,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:41:57,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182144846] [2021-10-24 10:41:57,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:41:57,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402127740] [2021-10-24 10:41:57,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402127740] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:41:57,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:41:57,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:41:57,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092750831] [2021-10-24 10:41:57,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:41:57,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:41:57,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:41:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:41:57,884 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) [2021-10-24 10:41:57,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:41:57,989 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-10-24 10:41:57,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:41:57,990 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 [2021-10-24 10:41:57,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:41:57,990 INFO L225 Difference]: With dead ends: 49 [2021-10-24 10:41:57,991 INFO L226 Difference]: Without dead ends: 45 [2021-10-24 10:41:57,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:41:57,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-24 10:41:57,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-10-24 10:41:57,997 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) [2021-10-24 10:41:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-10-24 10:41:57,998 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 7 [2021-10-24 10:41:57,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:41:57,999 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-24 10:41:57,999 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) [2021-10-24 10:41:57,999 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-10-24 10:41:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:41:58,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:41:58,000 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:41:58,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:41:58,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:41:58,230 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)] === [2021-10-24 10:41:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:41:58,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1983963802, now seen corresponding path program 1 times [2021-10-24 10:41:58,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:41:58,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270242148] [2021-10-24 10:41:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:41:58,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:41:58,256 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:41:58,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349804936] [2021-10-24 10:41:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:41:58,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:41:58,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:41:58,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:41:58,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:41:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:41:58,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:41:58,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:41:58,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:41:58,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:41:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:41:58,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:41:58,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270242148] [2021-10-24 10:41:58,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:41:58,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349804936] [2021-10-24 10:41:58,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349804936] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:41:58,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:41:58,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:41:58,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320140007] [2021-10-24 10:41:58,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:41:58,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:41:58,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:41:58,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:41:58,562 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) [2021-10-24 10:42:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:01,167 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-10-24 10:42:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:42:01,169 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 [2021-10-24 10:42:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:01,170 INFO L225 Difference]: With dead ends: 71 [2021-10-24 10:42:01,170 INFO L226 Difference]: Without dead ends: 58 [2021-10-24 10:42:01,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:42:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-24 10:42:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2021-10-24 10:42:01,178 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) [2021-10-24 10:42:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-10-24 10:42:01,179 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 9 [2021-10-24 10:42:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:01,180 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-10-24 10:42:01,180 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) [2021-10-24 10:42:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-10-24 10:42:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:42:01,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:01,181 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:42:01,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:01,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:42:01,406 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)] === [2021-10-24 10:42:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash 966688274, now seen corresponding path program 1 times [2021-10-24 10:42:01,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:42:01,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233387725] [2021-10-24 10:42:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:01,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:42:01,419 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:42:01,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236513434] [2021-10-24 10:42:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:01,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:42:01,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:42:01,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:42:01,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:42:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:01,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 10:42:01,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:01,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:42:01,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:42:01,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233387725] [2021-10-24 10:42:01,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:42:01,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236513434] [2021-10-24 10:42:01,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236513434] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:42:01,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1660674496] [2021-10-24 10:42:01,718 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-24 10:42:01,719 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:42:01,726 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:42:01,732 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:42:01,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:42:01,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,783 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:42:01,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:42:01,787 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:42:01,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:42:01,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-24 10:42:01,819 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-10-24 10:42:01,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,853 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 [2021-10-24 10:42:01,854 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:42:01,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:42:01,856 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:42:01,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:01,884 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:42:01,908 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 [2021-10-24 10:42:01,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:42:01,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:42:01,913 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:42:01,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:01,943 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-24 10:42:01,958 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:42:01,959 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:136, output treesize:111 [2021-10-24 10:42:01,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:01,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-24 10:42:01,991 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-24 10:42:01,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-10-24 10:42:02,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:02,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-10-24 10:42:02,043 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:02,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-10-24 10:42:02,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:02,074 INFO L185 QuantifierPusher]: treesize reduction 7, result has 94.5 percent of original size 121 [2021-10-24 10:42:02,084 INFO L180 QuantifierPusher]: treesize reduction 7, result has 94.9 percent of original size [2021-10-24 10:42:02,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-10-24 10:42:02,102 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-24 10:42:02,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-10-24 10:42:02,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,224 INFO L180 QuantifierPusher]: treesize reduction 32, result has 74.6 percent of original size [2021-10-24 10:42:02,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-24 10:42:02,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:02,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 10:42:02,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:02,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-24 10:42:02,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:02,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-10-24 10:42:02,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:02,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-24 10:42:02,413 INFO L180 QuantifierPusher]: treesize reduction 32, result has 74.6 percent of original size [2021-10-24 10:42:02,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-24 10:42:02,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:02,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 10:42:02,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:02,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-24 10:42:02,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:02,560 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:42:02,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-10-24 10:42:02,569 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:42:03,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1660674496] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:03,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:42:03,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 3] total 12 [2021-10-24 10:42:03,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130700893] [2021-10-24 10:42:03,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 10:42:03,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:42:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 10:42:03,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-24 10:42:03,739 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) [2021-10-24 10:42:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:05,519 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-10-24 10:42:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 10:42:05,519 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 [2021-10-24 10:42:05,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:05,520 INFO L225 Difference]: With dead ends: 47 [2021-10-24 10:42:05,520 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:42:05,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2278.3ms TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:42:05,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:42:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:42:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:42:05,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-24 10:42:05,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:05,521 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:42:05,522 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) [2021-10-24 10:42:05,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:42:05,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:42:05,524 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:42:05,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:42:05,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:42:05,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:42:05,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:42:05,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:42:05,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:05,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:42:05,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:42:05,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:05,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:05,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:05,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:05,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:05,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:05,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:09,590 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:42:09,591 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:42:09,591 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:42:09,591 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:42:09,591 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:42:09,591 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:42:09,592 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))) [2021-10-24 10:42:09,592 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:42:09,592 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))) [2021-10-24 10:42:09,592 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:42:09,593 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))) [2021-10-24 10:42:09,593 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:42:09,593 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))) [2021-10-24 10:42:09,593 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:42:09,593 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:42:09,594 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))) [2021-10-24 10:42:09,594 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:42:09,594 INFO L860 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-10-24 10:42:09,594 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:42:09,594 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:42:09,595 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:42:09,595 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:42:09,595 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:42:09,595 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:42:09,595 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:42:09,595 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2021-10-24 10:42:09,596 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))) [2021-10-24 10:42:09,596 INFO L857 garLoopResultBuilder]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2021-10-24 10:42:09,596 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:42:09,600 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:42:09,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:42:09 BoogieIcfgContainer [2021-10-24 10:42:09,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:42:09,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:42:09,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:42:09,646 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:42:09,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:56" (3/4) ... [2021-10-24 10:42:09,649 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:42:09,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-24 10:42:09,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:42:09,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:42:09,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:42:09,681 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) [2021-10-24 10:42:09,681 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) [2021-10-24 10:42:09,681 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) [2021-10-24 10:42:09,681 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) [2021-10-24 10:42:09,682 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) [2021-10-24 10:42:09,694 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:42:09,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:42:09,695 INFO L168 Benchmark]: Toolchain (without parser) took 13648.93 ms. Allocated memory was 90.2 MB in the beginning and 155.2 MB in the end (delta: 65.0 MB). Free memory was 53.5 MB in the beginning and 95.4 MB in the end (delta: -41.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:09,696 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:42:09,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.85 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 53.4 MB in the beginning and 103.2 MB in the end (delta: -49.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:09,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.55 ms. Allocated memory is still 127.9 MB. Free memory was 103.2 MB in the beginning and 101.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:42:09,697 INFO L168 Benchmark]: Boogie Preprocessor took 47.54 ms. Allocated memory is still 127.9 MB. Free memory was 101.6 MB in the beginning and 100.7 MB in the end (delta: 905.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:42:09,697 INFO L168 Benchmark]: RCFGBuilder took 313.86 ms. Allocated memory is still 127.9 MB. Free memory was 100.7 MB in the beginning and 89.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:09,698 INFO L168 Benchmark]: TraceAbstraction took 12837.98 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 88.9 MB in the beginning and 98.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 60.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:09,698 INFO L168 Benchmark]: Witness Printer took 48.58 ms. Allocated memory is still 155.2 MB. Free memory was 98.5 MB in the beginning and 95.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:09,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.85 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 53.4 MB in the beginning and 103.2 MB in the end (delta: -49.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.55 ms. Allocated memory is still 127.9 MB. Free memory was 103.2 MB in the beginning and 101.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.54 ms. Allocated memory is still 127.9 MB. Free memory was 101.6 MB in the beginning and 100.7 MB in the end (delta: 905.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 313.86 ms. Allocated memory is still 127.9 MB. Free memory was 100.7 MB in the beginning and 89.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12837.98 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 88.9 MB in the beginning and 98.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 60.4 MB. Max. memory is 16.1 GB. * Witness Printer took 48.58 ms. Allocated memory is still 155.2 MB. Free memory was 98.5 MB in the beginning and 95.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 12734.4ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 12.0ms, AutomataDifference: 4687.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3844.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 92 SDtfs, 111 SDslu, 101 SDs, 0 SdLazy, 181 SolverSat, 63 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3311.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2382.4ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 45.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 30 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 22 NumberOfFragments, 672 HoareAnnotationTreeSize, 7 FomulaSimplifications, 357 FormulaSimplificationTreeSizeReduction, 53.4ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 186 FormulaSimplificationTreeSizeReductionInter, 3783.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 29.1ms SsaConstructionTime, 133.8ms SatisfiabilityAnalysisTime, 828.2ms 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]: 851, 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]: 452, 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]: 438, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 187, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 42, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 99, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 103, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 123, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 15, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 408, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 408, 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]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 11, 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! [2021-10-24 10:42:09,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3994d32c-05eb-4e5f-ac81-d69121c2cd6c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...