./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/sqrt1-ll.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_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/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_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/sqrt1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/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_758bf1d8-e868-49b5-8c84-ed573bee3151/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 5a667cf640b9cf5657756f4ca44157e13471ed71aebfaf7ff11f9d5251db37ae .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 10:52:04,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:52:04,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:52:04,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:52:04,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:52:04,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:52:04,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:52:04,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:52:04,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:52:04,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:52:04,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:52:04,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:52:04,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:52:04,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:52:04,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:52:04,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:52:04,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:52:04,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:52:04,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:52:04,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:52:04,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:52:04,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:52:04,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:52:04,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:52:04,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:52:04,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:52:04,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:52:04,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:52:04,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:52:04,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:52:04,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:52:04,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:52:04,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:52:04,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:52:04,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:52:04,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:52:04,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:52:04,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:52:04,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:52:04,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:52:04,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:52:04,373 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:52:04,423 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:52:04,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:52:04,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:52:04,425 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:52:04,426 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:52:04,426 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:52:04,426 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:52:04,426 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:52:04,433 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:52:04,434 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:52:04,435 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:52:04,435 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:52:04,435 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:52:04,436 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:52:04,436 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:52:04,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:52:04,437 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:52:04,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:52:04,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:52:04,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:52:04,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:52:04,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:52:04,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:52:04,439 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:52:04,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:52:04,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:52:04,440 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:52:04,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:52:04,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:52:04,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:52:04,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:52:04,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:52:04,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:52:04,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:52:04,444 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:52:04,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:52:04,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:52:04,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:52:04,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:52:04,445 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_758bf1d8-e868-49b5-8c84-ed573bee3151/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a667cf640b9cf5657756f4ca44157e13471ed71aebfaf7ff11f9d5251db37ae [2021-10-24 10:52:04,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:52:04,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:52:04,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:52:04,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:52:04,770 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:52:04,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench/sqrt1-ll.c [2021-10-24 10:52:04,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/data/4d23c7c3c/fa2b8e061a5d4ebdafa2e6baed7f6ba4/FLAGd2feeefec [2021-10-24 10:52:05,417 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:52:05,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/sv-benchmarks/c/nla-digbench/sqrt1-ll.c [2021-10-24 10:52:05,431 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/data/4d23c7c3c/fa2b8e061a5d4ebdafa2e6baed7f6ba4/FLAGd2feeefec [2021-10-24 10:52:05,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/data/4d23c7c3c/fa2b8e061a5d4ebdafa2e6baed7f6ba4 [2021-10-24 10:52:05,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:52:05,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:52:05,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:52:05,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:52:05,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:52:05,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:05" (1/1) ... [2021-10-24 10:52:05,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45239137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:05, skipping insertion in model container [2021-10-24 10:52:05,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:05" (1/1) ... [2021-10-24 10:52:05,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:52:05,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:52:06,018 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_758bf1d8-e868-49b5-8c84-ed573bee3151/sv-benchmarks/c/nla-digbench/sqrt1-ll.c[520,533] [2021-10-24 10:52:06,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:52:06,048 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:52:06,060 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_758bf1d8-e868-49b5-8c84-ed573bee3151/sv-benchmarks/c/nla-digbench/sqrt1-ll.c[520,533] [2021-10-24 10:52:06,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:52:06,082 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:52:06,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06 WrapperNode [2021-10-24 10:52:06,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:52:06,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:52:06,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:52:06,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:52:06,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:52:06,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:52:06,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:52:06,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:52:06,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:52:06,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:52:06,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:52:06,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:52:06,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:52:06,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:52:06,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:52:06,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:52:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:52:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:52:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:52:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:52:06,508 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:52:06,509 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-24 10:52:06,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:06 BoogieIcfgContainer [2021-10-24 10:52:06,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:52:06,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:52:06,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:52:06,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:52:06,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:52:05" (1/3) ... [2021-10-24 10:52:06,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441ba1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:06, skipping insertion in model container [2021-10-24 10:52:06,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (2/3) ... [2021-10-24 10:52:06,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441ba1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:06, skipping insertion in model container [2021-10-24 10:52:06,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:06" (3/3) ... [2021-10-24 10:52:06,522 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll.c [2021-10-24 10:52:06,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:52:06,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-24 10:52:06,585 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:52:06,592 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 10:52:06,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 10:52:06,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 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 10:52:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:52:06,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:06,649 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:52:06,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:52:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash 3615732, now seen corresponding path program 1 times [2021-10-24 10:52:06,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:52:06,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40870435] [2021-10-24 10:52:06,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:06,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:52:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:07,040 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 10:52:07,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:52:07,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40870435] [2021-10-24 10:52:07,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40870435] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:52:07,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:52:07,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:52:07,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753783823] [2021-10-24 10:52:07,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:52:07,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:52:07,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:52:07,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:52:07,068 INFO L87 Difference]: Start difference. First operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 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 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 10:52:07,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:07,260 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2021-10-24 10:52:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:52:07,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-24 10:52:07,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:07,273 INFO L225 Difference]: With dead ends: 78 [2021-10-24 10:52:07,273 INFO L226 Difference]: Without dead ends: 47 [2021-10-24 10:52:07,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:52:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-24 10:52:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2021-10-24 10:52:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 34 states have internal predecessors, (38), 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 10:52:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-10-24 10:52:07,333 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 4 [2021-10-24 10:52:07,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:07,334 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-10-24 10:52:07,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 10:52:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-10-24 10:52:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:52:07,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:07,337 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:52:07,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:52:07,338 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:52:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:07,343 INFO L82 PathProgramCache]: Analyzing trace with hash -820093321, now seen corresponding path program 1 times [2021-10-24 10:52:07,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:52:07,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118888664] [2021-10-24 10:52:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:07,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:52:07,386 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:52:07,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615247033] [2021-10-24 10:52:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:07,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:52:07,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:52:07,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:52:07,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:52:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:07,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:52:07,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:07,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:07,793 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 10:52:07,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:52:07,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118888664] [2021-10-24 10:52:07,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:52:07,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615247033] [2021-10-24 10:52:07,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615247033] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:52:07,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:52:07,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:52:07,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524723340] [2021-10-24 10:52:07,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:52:07,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:52:07,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:52:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:52:07,799 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:07,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:07,918 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-10-24 10:52:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:52:07,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:52:07,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:07,921 INFO L225 Difference]: With dead ends: 47 [2021-10-24 10:52:07,921 INFO L226 Difference]: Without dead ends: 43 [2021-10-24 10:52:07,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:52:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-24 10:52:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2021-10-24 10:52:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 36 states have internal predecessors, (39), 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 10:52:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-24 10:52:07,935 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2021-10-24 10:52:07,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:07,936 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-24 10:52:07,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-24 10:52:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:52:07,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:07,940 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:52:07,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:08,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:52:08,163 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:52:08,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:08,164 INFO L82 PathProgramCache]: Analyzing trace with hash -2130510438, now seen corresponding path program 1 times [2021-10-24 10:52:08,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:52:08,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84007607] [2021-10-24 10:52:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:08,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:52:08,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:52:08,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672049558] [2021-10-24 10:52:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:08,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:52:08,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:52:08,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:52:08,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:52:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:08,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:52:08,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:08,377 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 10:52:08,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:08,476 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 10:52:08,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:52:08,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84007607] [2021-10-24 10:52:08,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:52:08,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672049558] [2021-10-24 10:52:08,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672049558] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:52:08,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:52:08,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:52:08,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37506134] [2021-10-24 10:52:08,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:52:08,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:52:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:52:08,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:52:08,481 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:08,782 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-24 10:52:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:52:08,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:52:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:08,783 INFO L225 Difference]: With dead ends: 39 [2021-10-24 10:52:08,783 INFO L226 Difference]: Without dead ends: 27 [2021-10-24 10:52:08,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:52:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-24 10:52:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-24 10:52:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 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 10:52:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-24 10:52:08,791 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 8 [2021-10-24 10:52:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:08,792 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-24 10:52:08,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-24 10:52:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:52:08,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:08,793 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:52:08,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-24 10:52:09,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:52:09,006 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:52:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:09,007 INFO L82 PathProgramCache]: Analyzing trace with hash 995168366, now seen corresponding path program 1 times [2021-10-24 10:52:09,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:52:09,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597990893] [2021-10-24 10:52:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:09,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:52:09,021 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:52:09,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637376403] [2021-10-24 10:52:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:09,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:52:09,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:52:09,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:52:09,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:52:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:09,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 10:52:09,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:09,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:52:09,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:52:09,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597990893] [2021-10-24 10:52:09,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:52:09,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637376403] [2021-10-24 10:52:09,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637376403] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:52:09,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [227731967] [2021-10-24 10:52:09,417 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 10:52:09,418 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:52:09,430 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:52:09,437 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:52:09,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:52:09,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,477 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:52:09,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:52:09,482 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:52:09,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:52:09,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-10-24 10:52:09,512 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-10-24 10:52:09,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,538 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 10:52:09,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:52:09,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:52:09,543 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:52:09,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:09,623 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:09,656 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 10:52:09,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:52:09,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:52:09,662 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:52:09,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:09,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-24 10:52:09,693 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:52:09,694 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:133, output treesize:108 [2021-10-24 10:52:09,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-10-24 10:52:09,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-24 10:52:09,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,757 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.9 percent of original size 118 [2021-10-24 10:52:09,767 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.7 percent of original size [2021-10-24 10:52:09,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-10-24 10:52:09,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:09,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:09,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:09,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:09,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:09,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:09,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-24 10:52:09,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-24 10:52:09,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:09,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-10-24 10:52:09,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:10,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-10-24 10:52:10,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,121 INFO L180 QuantifierPusher]: treesize reduction 28, result has 77.2 percent of original size [2021-10-24 10:52:10,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 10:52:10,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:10,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 10:52:10,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:10,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-10-24 10:52:10,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:10,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-10-24 10:52:10,188 INFO L180 QuantifierPusher]: treesize reduction 28, result has 77.2 percent of original size [2021-10-24 10:52:10,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 10:52:10,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:10,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 10:52:10,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:10,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-10-24 10:52:10,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:10,310 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:52:11,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:52:11,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:52:11,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-10-24 10:52:11,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718387012] [2021-10-24 10:52:11,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:52:11,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:52:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:52:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:52:11,496 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 10:52:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:11,604 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-24 10:52:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:52:11,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 10:52:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:11,608 INFO L225 Difference]: With dead ends: 42 [2021-10-24 10:52:11,608 INFO L226 Difference]: Without dead ends: 38 [2021-10-24 10:52:11,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1247.7ms TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-24 10:52:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-24 10:52:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 23. [2021-10-24 10:52:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 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 10:52:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-24 10:52:11,614 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2021-10-24 10:52:11,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:11,614 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-24 10:52:11,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 10:52:11,614 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-24 10:52:11,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:52:11,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:11,615 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:52:11,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:11,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:52:11,815 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:52:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1420751759, now seen corresponding path program 1 times [2021-10-24 10:52:11,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:52:11,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051575867] [2021-10-24 10:52:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:11,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:52:11,825 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:52:11,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025519874] [2021-10-24 10:52:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:11,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:52:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:52:11,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:52:11,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 10:52:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:11,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-24 10:52:11,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:12,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:12,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:52:12,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051575867] [2021-10-24 10:52:12,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:52:12,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025519874] [2021-10-24 10:52:12,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025519874] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:52:12,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [882886872] [2021-10-24 10:52:12,101 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 10:52:12,101 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:52:12,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:52:12,102 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:52:12,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:52:12,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,111 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:52:12,111 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:52:12,113 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:52:12,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:52:12,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-10-24 10:52:12,120 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-10-24 10:52:12,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,132 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 10:52:12,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:52:12,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:52:12,135 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:52:12,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,142 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:52:12,175 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 10:52:12,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:52:12,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:52:12,180 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:52:12,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-24 10:52:12,190 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:52:12,190 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:133, output treesize:108 [2021-10-24 10:52:12,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-10-24 10:52:12,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-24 10:52:12,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-10-24 10:52:12,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-10-24 10:52:12,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,333 INFO L180 QuantifierPusher]: treesize reduction 28, result has 77.2 percent of original size [2021-10-24 10:52:12,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 10:52:12,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 10:52:12,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-10-24 10:52:12,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-10-24 10:52:12,380 INFO L180 QuantifierPusher]: treesize reduction 28, result has 77.2 percent of original size [2021-10-24 10:52:12,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 10:52:12,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 10:52:12,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:12,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-10-24 10:52:12,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:12,468 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:52:13,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:52:13,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:52:13,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-24 10:52:13,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734118800] [2021-10-24 10:52:13,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:52:13,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:52:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:52:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:52:13,812 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 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 10:52:13,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:13,957 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-10-24 10:52:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:52:13,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 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 10:52:13,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:13,958 INFO L225 Difference]: With dead ends: 34 [2021-10-24 10:52:13,958 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:52:13,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1421.2ms TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-24 10:52:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:52:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:52:13,959 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 10:52:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:52:13,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-24 10:52:13,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:13,959 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:52:13,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 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 10:52:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:52:13,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:52:13,962 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:13,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:13,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:13,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:13,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:13,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:14,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:14,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-24 10:52:14,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:52:14,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:14,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:14,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:14,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:14,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:14,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:14,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:52:14,930 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:52:14,931 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:52:14,931 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:52:14,931 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:52:14,931 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:52:14,931 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:52:14,932 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-10-24 10:52:14,932 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:52:14,932 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-10-24 10:52:14,932 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:52:14,933 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 35 36) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-10-24 10:52:14,933 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:52:14,933 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (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)))) [2021-10-24 10:52:14,933 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:52:14,933 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:52:14,934 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 10:52:14,934 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:52:14,934 INFO L853 garLoopResultBuilder]: At program point L29-2(lines 29 41) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) .cse0) (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 1)))) [2021-10-24 10:52:14,934 INFO L853 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-24 10:52:14,934 INFO L857 garLoopResultBuilder]: For program point L29-3(lines 29 41) no Hoare annotation was computed. [2021-10-24 10:52:14,935 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:52:14,935 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:52:14,935 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:52:14,935 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:52:14,935 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:52:14,936 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:52:14,936 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:52:14,936 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:52:14,941 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:52:14,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:52:14 BoogieIcfgContainer [2021-10-24 10:52:14,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:52:14,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:52:14,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:52:14,960 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:52:14,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:06" (3/4) ... [2021-10-24 10:52:14,964 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:52:14,974 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-24 10:52:14,974 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:52:14,975 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:52:14,975 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:52:15,017 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:52:15,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:52:15,018 INFO L168 Benchmark]: Toolchain (without parser) took 9250.89 ms. Allocated memory was 111.1 MB in the beginning and 197.1 MB in the end (delta: 86.0 MB). Free memory was 82.3 MB in the beginning and 152.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:15,019 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 111.1 MB. Free memory is still 66.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:52:15,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.68 ms. Allocated memory is still 111.1 MB. Free memory was 82.3 MB in the beginning and 85.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:15,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.65 ms. Allocated memory is still 111.1 MB. Free memory was 85.7 MB in the beginning and 84.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:15,020 INFO L168 Benchmark]: Boogie Preprocessor took 24.86 ms. Allocated memory is still 111.1 MB. Free memory was 84.1 MB in the beginning and 83.1 MB in the end (delta: 979.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:52:15,021 INFO L168 Benchmark]: RCFGBuilder took 365.83 ms. Allocated memory is still 111.1 MB. Free memory was 83.1 MB in the beginning and 72.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:15,021 INFO L168 Benchmark]: TraceAbstraction took 8445.38 ms. Allocated memory was 111.1 MB in the beginning and 197.1 MB in the end (delta: 86.0 MB). Free memory was 71.5 MB in the beginning and 155.4 MB in the end (delta: -83.9 MB). Peak memory consumption was 92.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:15,022 INFO L168 Benchmark]: Witness Printer took 57.68 ms. Allocated memory is still 197.1 MB. Free memory was 155.4 MB in the beginning and 152.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:15,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 111.1 MB. Free memory is still 66.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.68 ms. Allocated memory is still 111.1 MB. Free memory was 82.3 MB in the beginning and 85.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.65 ms. Allocated memory is still 111.1 MB. Free memory was 85.7 MB in the beginning and 84.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.86 ms. Allocated memory is still 111.1 MB. Free memory was 84.1 MB in the beginning and 83.1 MB in the end (delta: 979.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 365.83 ms. Allocated memory is still 111.1 MB. Free memory was 83.1 MB in the beginning and 72.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8445.38 ms. Allocated memory was 111.1 MB in the beginning and 197.1 MB in the end (delta: 86.0 MB). Free memory was 71.5 MB in the beginning and 155.4 MB in the end (delta: -83.9 MB). Peak memory consumption was 92.1 MB. Max. memory is 16.1 GB. * Witness Printer took 57.68 ms. Allocated memory is still 197.1 MB. Free memory was 155.4 MB in the beginning and 152.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms 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, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 8357.9ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 34.1ms, AutomataDifference: 914.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 753.2ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 60 SDtfs, 133 SDslu, 104 SDs, 0 SdLazy, 192 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 489.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2813.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=2, 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: 65.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 26 NumberOfFragments, 166 HoareAnnotationTreeSize, 7 FomulaSimplifications, 232 FormulaSimplificationTreeSizeReduction, 38.5ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 739 FormulaSimplificationTreeSizeReductionInter, 708.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 50.4ms SsaConstructionTime, 130.7ms SatisfiabilityAnalysisTime, 1173.4ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 513 SizeOfPredicates, 13 NumberOfNonLiveVariables, 248 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 1/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (1 <= cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((1 <= cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1) || (((a == 0 && t == 1) && s == 1) && !(0 == cond)) - 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: (1 <= cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((1 <= cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1) || ((t == 1 && t == 2 * a + 1) && s == 1) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:52:15,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758bf1d8-e868-49b5-8c84-ed573bee3151/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...