./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.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_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/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_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/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_c34df4c5-4483-49fd-a071-76abe8961a25/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 e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:24:15,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:24:15,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:24:15,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:24:15,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:24:15,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:24:15,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:24:15,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:24:15,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:24:15,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:24:15,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:24:15,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:24:15,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:24:15,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:24:15,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:24:15,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:24:15,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:24:15,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:24:15,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:24:15,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:24:15,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:24:15,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:24:15,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:24:15,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:24:15,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:24:15,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:24:15,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:24:15,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:24:15,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:24:15,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:24:15,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:24:15,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:24:15,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:24:15,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:24:15,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:24:15,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:24:15,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:24:15,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:24:15,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:24:15,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:24:15,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:24:15,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:24:15,412 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:24:15,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:24:15,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:24:15,415 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:24:15,415 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:24:15,415 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:24:15,416 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:24:15,416 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:24:15,416 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:24:15,417 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:24:15,418 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:24:15,418 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:24:15,419 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:24:15,419 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:24:15,419 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:24:15,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:24:15,421 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:24:15,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:24:15,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:24:15,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:24:15,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:24:15,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:24:15,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:24:15,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:24:15,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:24:15,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:24:15,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:24:15,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:24:15,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:24:15,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:24:15,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:24:15,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:24:15,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:24:15,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:24:15,426 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:24:15,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:24:15,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:24:15,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:24:15,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:24:15,428 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_c34df4c5-4483-49fd-a071-76abe8961a25/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 [2021-10-24 10:24:15,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:24:15,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:24:15,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:24:15,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:24:15,858 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:24:15,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2021-10-24 10:24:15,947 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/data/072ab680e/6b94582d404643f3946dcfc51995fdc0/FLAG21a091e43 [2021-10-24 10:24:16,649 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:24:16,654 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2021-10-24 10:24:16,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/data/072ab680e/6b94582d404643f3946dcfc51995fdc0/FLAG21a091e43 [2021-10-24 10:24:16,983 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/data/072ab680e/6b94582d404643f3946dcfc51995fdc0 [2021-10-24 10:24:16,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:24:16,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:24:16,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:24:16,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:24:16,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:24:16,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:24:16" (1/1) ... [2021-10-24 10:24:16,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc16739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:16, skipping insertion in model container [2021-10-24 10:24:16,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:24:16" (1/1) ... [2021-10-24 10:24:17,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:24:17,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:24:17,191 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_c34df4c5-4483-49fd-a071-76abe8961a25/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c[489,502] [2021-10-24 10:24:17,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:24:17,218 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:24:17,228 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_c34df4c5-4483-49fd-a071-76abe8961a25/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c[489,502] [2021-10-24 10:24:17,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:24:17,254 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:24:17,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17 WrapperNode [2021-10-24 10:24:17,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:24:17,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:24:17,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:24:17,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:24:17,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (1/1) ... [2021-10-24 10:24:17,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (1/1) ... [2021-10-24 10:24:17,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:24:17,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:24:17,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:24:17,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:24:17,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (1/1) ... [2021-10-24 10:24:17,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (1/1) ... [2021-10-24 10:24:17,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (1/1) ... [2021-10-24 10:24:17,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (1/1) ... [2021-10-24 10:24:17,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (1/1) ... [2021-10-24 10:24:17,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (1/1) ... [2021-10-24 10:24:17,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (1/1) ... [2021-10-24 10:24:17,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:24:17,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:24:17,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:24:17,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:24:17,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (1/1) ... [2021-10-24 10:24:17,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:24:17,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:24:17,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:24:17,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:24:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:24:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:24:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:24:17,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:24:17,932 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:24:17,932 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-24 10:24:17,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:24:17 BoogieIcfgContainer [2021-10-24 10:24:17,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:24:17,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:24:17,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:24:17,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:24:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:24:16" (1/3) ... [2021-10-24 10:24:17,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae3ee3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:24:17, skipping insertion in model container [2021-10-24 10:24:17,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:24:17" (2/3) ... [2021-10-24 10:24:17,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae3ee3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:24:17, skipping insertion in model container [2021-10-24 10:24:17,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:24:17" (3/3) ... [2021-10-24 10:24:17,947 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2021-10-24 10:24:17,958 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:24:17,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-24 10:24:18,003 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:24:18,010 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 10:24:18,011 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-24 10:24:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 31 states have internal predecessors, (40), 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 10:24:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:24:18,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:24:18,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:24:18,031 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:24:18,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:24:18,037 INFO L82 PathProgramCache]: Analyzing trace with hash 5460787, now seen corresponding path program 1 times [2021-10-24 10:24:18,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:24:18,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859316658] [2021-10-24 10:24:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:18,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:24:18,148 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:24:18,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124733016] [2021-10-24 10:24:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:18,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:18,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:24:18,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:24:18,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:24:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:24:18,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:24:18,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:24:18,334 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 10:24:18,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:24:18,402 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 10:24:18,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:24:18,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859316658] [2021-10-24 10:24:18,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:18,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124733016] [2021-10-24 10:24:18,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124733016] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:24:18,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:24:18,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:24:18,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258524931] [2021-10-24 10:24:18,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:24:18,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:24:18,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:24:18,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:24:18,427 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 31 states have internal predecessors, (40), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 10:24:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:24:18,539 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2021-10-24 10:24:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:24:18,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 10:24:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:24:18,549 INFO L225 Difference]: With dead ends: 90 [2021-10-24 10:24:18,550 INFO L226 Difference]: Without dead ends: 55 [2021-10-24 10:24:18,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:24:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-24 10:24:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2021-10-24 10:24:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 42 states have internal predecessors, (48), 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 10:24:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-10-24 10:24:18,588 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 4 [2021-10-24 10:24:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:24:18,589 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-10-24 10:24:18,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 10:24:18,589 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-10-24 10:24:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:24:18,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:24:18,590 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:24:18,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:24:18,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-24 10:24:18,814 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:24:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:24:18,815 INFO L82 PathProgramCache]: Analyzing trace with hash 953005430, now seen corresponding path program 1 times [2021-10-24 10:24:18,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:24:18,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322798726] [2021-10-24 10:24:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:18,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:24:18,849 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:24:18,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903860201] [2021-10-24 10:24:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:18,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:18,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:24:18,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:24:18,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:24:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:24:18,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-24 10:24:18,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:24:19,208 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 10:24:19,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:24:19,285 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 10:24:19,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:24:19,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322798726] [2021-10-24 10:24:19,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:19,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903860201] [2021-10-24 10:24:19,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903860201] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:24:19,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:24:19,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:24:19,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691048593] [2021-10-24 10:24:19,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:24:19,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:24:19,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:24:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:24:19,301 INFO L87 Difference]: Start difference. First operand 43 states and 48 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 10:24:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:24:19,423 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-10-24 10:24:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:24:19,424 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 10:24:19,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:24:19,428 INFO L225 Difference]: With dead ends: 55 [2021-10-24 10:24:19,428 INFO L226 Difference]: Without dead ends: 53 [2021-10-24 10:24:19,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:24:19,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-24 10:24:19,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2021-10-24 10:24:19,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 42 states have internal predecessors, (47), 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 10:24:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-10-24 10:24:19,446 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 6 [2021-10-24 10:24:19,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:24:19,446 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-10-24 10:24:19,446 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 10:24:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-10-24 10:24:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:24:19,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:24:19,447 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:24:19,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:24:19,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:19,669 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:24:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:24:19,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1010340953, now seen corresponding path program 1 times [2021-10-24 10:24:19,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:24:19,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711232553] [2021-10-24 10:24:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:19,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:24:19,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:24:19,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402077437] [2021-10-24 10:24:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:19,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:19,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:24:19,695 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:24:19,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:24:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:24:19,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-24 10:24:19,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:24:20,101 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 10:24:20,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:24:20,178 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 10:24:20,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:24:20,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711232553] [2021-10-24 10:24:20,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:20,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402077437] [2021-10-24 10:24:20,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402077437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:24:20,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:24:20,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:24:20,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454874902] [2021-10-24 10:24:20,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:24:20,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:24:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:24:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:24:20,185 INFO L87 Difference]: Start difference. First operand 43 states and 47 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 10:24:20,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:24:20,294 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-10-24 10:24:20,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:24:20,294 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 10:24:20,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:24:20,298 INFO L225 Difference]: With dead ends: 54 [2021-10-24 10:24:20,298 INFO L226 Difference]: Without dead ends: 46 [2021-10-24 10:24:20,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:24:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-24 10:24:20,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-10-24 10:24:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:24:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-10-24 10:24:20,319 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 8 [2021-10-24 10:24:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:24:20,319 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-10-24 10:24:20,320 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 10:24:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-10-24 10:24:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:24:20,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:24:20,323 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:24:20,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:24:20,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:20,537 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:24:20,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:24:20,538 INFO L82 PathProgramCache]: Analyzing trace with hash -58538116, now seen corresponding path program 1 times [2021-10-24 10:24:20,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:24:20,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909382984] [2021-10-24 10:24:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:20,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:24:20,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:24:20,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632932700] [2021-10-24 10:24:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:20,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:20,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:24:20,578 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:24:20,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 10:24:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:24:20,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:24:20,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:24:20,783 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 10:24:20,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:24:20,837 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 10:24:20,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:24:20,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909382984] [2021-10-24 10:24:20,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:20,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632932700] [2021-10-24 10:24:20,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632932700] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:24:20,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:24:20,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:24:20,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038569273] [2021-10-24 10:24:20,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:24:20,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:24:20,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:24:20,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:24:20,844 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:24:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:24:20,900 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-10-24 10:24:20,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:24:20,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 10:24:20,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:24:20,902 INFO L225 Difference]: With dead ends: 41 [2021-10-24 10:24:20,902 INFO L226 Difference]: Without dead ends: 39 [2021-10-24 10:24:20,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:24:20,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-24 10:24:20,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-24 10:24:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 38 states have internal predecessors, (40), 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 10:24:20,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-10-24 10:24:20,918 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2021-10-24 10:24:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:24:20,919 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-24 10:24:20,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:24:20,925 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-10-24 10:24:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:24:20,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:24:20,926 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:24:20,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-24 10:24:21,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:21,141 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:24:21,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:24:21,141 INFO L82 PathProgramCache]: Analyzing trace with hash -56678163, now seen corresponding path program 1 times [2021-10-24 10:24:21,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:24:21,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541793295] [2021-10-24 10:24:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:21,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:24:21,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:24:21,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847276899] [2021-10-24 10:24:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:21,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:21,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:24:21,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:24:21,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 10:24:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:24:21,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 10:24:21,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:24:21,490 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 10:24:21,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:24:21,630 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 10:24:21,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:24:21,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541793295] [2021-10-24 10:24:21,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:21,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847276899] [2021-10-24 10:24:21,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847276899] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:24:21,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [364277469] [2021-10-24 10:24:21,651 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 10:24:21,651 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:24:21,655 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:24:21,661 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:24:21,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:24:21,695 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.9 percent of original size [2021-10-24 10:24:21,697 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:21,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:24:21,699 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:21,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:24:21,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 10:24:21,728 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-10-24 10:24:21,741 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:24:21,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:24:21,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:24:21,744 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:24:21,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,762 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 10:24:21,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:24:21,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:24:21,765 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:24:21,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:21,818 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:21,842 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 10:24:21,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:24:21,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:24:21,847 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:24:21,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:21,867 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,871 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 10:24:21,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 10:24:21,875 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:24:21,876 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:320, output treesize:131 [2021-10-24 10:24:21,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-10-24 10:24:21,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-10-24 10:24:21,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-10-24 10:24:21,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:21,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-24 10:24:21,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:21,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:21,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:21,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:21,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,072 INFO L180 QuantifierPusher]: treesize reduction 48, result has 70.6 percent of original size [2021-10-24 10:24:22,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-24 10:24:22,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-10-24 10:24:22,092 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,105 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:22,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-10-24 10:24:22,117 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:22,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-10-24 10:24:22,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-10-24 10:24:22,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-10-24 10:24:22,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,222 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.2 percent of original size [2021-10-24 10:24:22,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-24 10:24:22,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:24:22,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,256 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:22,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-24 10:24:22,277 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:22,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-10-24 10:24:22,286 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:22,288 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-10-24 10:24:22,300 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:22,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-10-24 10:24:22,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-10-24 10:24:22,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-10-24 10:24:22,355 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.2 percent of original size [2021-10-24 10:24:22,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-24 10:24:22,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:24:22,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,391 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:22,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-24 10:24:22,407 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:22,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 10:24:22,418 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:22,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-10-24 10:24:22,432 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:22,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:22,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-10-24 10:24:22,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 244 [2021-10-24 10:24:22,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:22,527 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:24:23,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:23,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:24:23,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-10-24 10:24:23,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404043205] [2021-10-24 10:24:23,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:24:23,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:24:23,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:24:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:24:23,579 INFO L87 Difference]: Start difference. First operand 39 states and 40 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 10:24:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:24:23,743 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-10-24 10:24:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:24:23,743 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 10:24:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:24:23,744 INFO L225 Difference]: With dead ends: 64 [2021-10-24 10:24:23,744 INFO L226 Difference]: Without dead ends: 60 [2021-10-24 10:24:23,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1139.2ms TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-10-24 10:24:23,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-24 10:24:23,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 35. [2021-10-24 10:24:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 34 states have internal predecessors, (36), 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 10:24:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-10-24 10:24:23,751 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 11 [2021-10-24 10:24:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:24:23,751 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-24 10:24:23,751 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 10:24:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-10-24 10:24:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:24:23,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:24:23,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:24:23,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:24:23,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:23,953 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:24:23,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:24:23,953 INFO L82 PathProgramCache]: Analyzing trace with hash -420396705, now seen corresponding path program 1 times [2021-10-24 10:24:23,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:24:23,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385899011] [2021-10-24 10:24:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:23,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:24:23,970 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:24:23,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106791439] [2021-10-24 10:24:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:23,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:23,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:24:23,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:24:23,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-24 10:24:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:24:24,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:24:24,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:24:24,228 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 10:24:24,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:24:24,331 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 10:24:24,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:24:24,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385899011] [2021-10-24 10:24:24,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:24,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106791439] [2021-10-24 10:24:24,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106791439] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:24:24,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:24:24,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-24 10:24:24,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179414622] [2021-10-24 10:24:24,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:24:24,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:24:24,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:24:24,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:24:24,338 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 10:24:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:24:24,483 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-10-24 10:24:24,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:24:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 10:24:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:24:24,485 INFO L225 Difference]: With dead ends: 35 [2021-10-24 10:24:24,485 INFO L226 Difference]: Without dead ends: 29 [2021-10-24 10:24:24,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:24:24,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-24 10:24:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-24 10:24:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 28 states have internal predecessors, (29), 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 10:24:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-24 10:24:24,491 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 13 [2021-10-24 10:24:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:24:24,492 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-24 10:24:24,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 10:24:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-24 10:24:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:24:24,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:24:24,493 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:24:24,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:24:24,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:24,714 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:24:24,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:24:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1367016624, now seen corresponding path program 1 times [2021-10-24 10:24:24,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:24:24,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030197973] [2021-10-24 10:24:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:24,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:24:24,729 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:24:24,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472501918] [2021-10-24 10:24:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:24,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:24,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:24:24,731 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:24:24,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-24 10:24:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:24:24,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-24 10:24:24,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:24:25,610 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 10:24:25,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:24:25,947 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 10:24:25,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:24:25,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030197973] [2021-10-24 10:24:25,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:25,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472501918] [2021-10-24 10:24:25,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472501918] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:24:25,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [333183770] [2021-10-24 10:24:25,951 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 10:24:25,951 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:24:25,952 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:24:25,952 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:24:25,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:24:25,961 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.9 percent of original size [2021-10-24 10:24:25,962 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:25,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:25,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:24:25,967 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:25,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:25,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:24:25,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 10:24:25,976 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 21=[|v_#valid_19|]} [2021-10-24 10:24:25,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:25,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:25,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:25,999 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 10:24:26,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:24:26,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:24:26,002 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:24:26,009 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:24:26,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:24:26,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:24:26,011 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:24:26,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,019 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:26,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:26,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:26,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:26,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:26,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:26,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:26,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:26,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:26,040 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 10:24:26,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:24:26,043 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:24:26,044 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:24:26,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,051 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,071 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 10:24:26,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 10:24:26,077 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:24:26,078 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:320, output treesize:131 [2021-10-24 10:24:26,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-10-24 10:24:26,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-10-24 10:24:26,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-10-24 10:24:26,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-24 10:24:26,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,198 INFO L180 QuantifierPusher]: treesize reduction 48, result has 70.6 percent of original size [2021-10-24 10:24:26,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-24 10:24:26,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-10-24 10:24:26,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,227 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:26,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-10-24 10:24:26,240 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:26,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-10-24 10:24:26,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258 [2021-10-24 10:24:26,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-10-24 10:24:26,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,343 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.2 percent of original size [2021-10-24 10:24:26,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-24 10:24:26,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:24:26,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,367 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:26,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-24 10:24:26,377 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:26,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-10-24 10:24:26,391 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:26,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-10-24 10:24:26,400 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:26,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-10-24 10:24:26,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-10-24 10:24:26,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-10-24 10:24:26,440 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.2 percent of original size [2021-10-24 10:24:26,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-24 10:24:26,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:24:26,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,487 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:26,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-24 10:24:26,499 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:26,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-10-24 10:24:26,524 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:26,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-10-24 10:24:26,535 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:26,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:26,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-10-24 10:24:26,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-10-24 10:24:26,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:26,592 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:24:27,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:27,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:24:27,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2021-10-24 10:24:27,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557056852] [2021-10-24 10:24:27,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 10:24:27,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:24:27,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 10:24:27,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-24 10:24:27,446 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 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 10:24:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:24:29,018 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2021-10-24 10:24:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-24 10:24:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 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 10:24:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:24:29,023 INFO L225 Difference]: With dead ends: 48 [2021-10-24 10:24:29,023 INFO L226 Difference]: Without dead ends: 46 [2021-10-24 10:24:29,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2086.0ms TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2021-10-24 10:24:29,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-24 10:24:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 27. [2021-10-24 10:24:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.08) 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 10:24:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-24 10:24:29,037 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 13 [2021-10-24 10:24:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:24:29,037 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-24 10:24:29,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 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 10:24:29,038 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-24 10:24:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 10:24:29,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:24:29,039 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-24 10:24:29,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:24:29,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-24 10:24:29,241 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:24:29,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:24:29,241 INFO L82 PathProgramCache]: Analyzing trace with hash -556860141, now seen corresponding path program 1 times [2021-10-24 10:24:29,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:24:29,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261169257] [2021-10-24 10:24:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:29,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:24:29,262 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:24:29,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308616267] [2021-10-24 10:24:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:24:29,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:29,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:24:29,271 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:24:29,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-24 10:24:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:24:29,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-24 10:24:29,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:24:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:24:30,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:24:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:24:31,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:24:31,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261169257] [2021-10-24 10:24:31,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:31,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308616267] [2021-10-24 10:24:31,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308616267] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:24:31,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [760815942] [2021-10-24 10:24:31,074 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 10:24:31,074 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:24:31,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:24:31,075 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:24:31,075 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:24:31,084 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.9 percent of original size [2021-10-24 10:24:31,085 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:24:31,087 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:24:31,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 10:24:31,102 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_19|], 21=[|v_#valid_20|]} [2021-10-24 10:24:31,110 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:24:31,111 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:24:31,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:24:31,113 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:24:31,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,127 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 10:24:31,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:24:31,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:24:31,130 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:24:31,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,138 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:24:31,162 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 10:24:31,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:24:31,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:24:31,168 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:24:31,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,176 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,179 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-24 10:24:31,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 10:24:31,182 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:24:31,183 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:320, output treesize:131 [2021-10-24 10:24:31,191 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-10-24 10:24:31,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-10-24 10:24:31,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-10-24 10:24:31,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-24 10:24:31,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,305 INFO L180 QuantifierPusher]: treesize reduction 48, result has 70.6 percent of original size [2021-10-24 10:24:31,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-24 10:24:31,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-10-24 10:24:31,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,359 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-24 10:24:31,372 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-10-24 10:24:31,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-10-24 10:24:31,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-10-24 10:24:31,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,486 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.2 percent of original size [2021-10-24 10:24:31,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-24 10:24:31,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:24:31,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,518 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-24 10:24:31,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 10:24:31,543 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-10-24 10:24:31,554 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-10-24 10:24:31,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 244 [2021-10-24 10:24:31,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-10-24 10:24:31,599 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.2 percent of original size [2021-10-24 10:24:31,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-24 10:24:31,611 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,617 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:24:31,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,638 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-10-24 10:24:31,651 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-24 10:24:31,662 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-10-24 10:24:31,673 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:24:31,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:24:31,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-10-24 10:24:31,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-10-24 10:24:31,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:31,741 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:24:33,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:24:33,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:24:33,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2021-10-24 10:24:33,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865649276] [2021-10-24 10:24:33,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 10:24:33,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:24:33,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 10:24:33,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-24 10:24:33,260 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:24:34,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:24:34,807 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-24 10:24:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 10:24:34,808 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-24 10:24:34,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:24:34,809 INFO L225 Difference]: With dead ends: 42 [2021-10-24 10:24:34,809 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:24:34,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 3159.7ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-10-24 10:24:34,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:24:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:24:34,810 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 10:24:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:24:34,811 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-24 10:24:34,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:24:34,811 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:24:34,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:24:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:24:34,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:24:34,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:24:34,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:24:34,816 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:24:34,816 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:24:34,816 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:24:34,817 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:24:34,817 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:24:34,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:24:35,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:24:35,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:24:35,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:35,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:35,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:35,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:35,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:35,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:35,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:35,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:24:38,500 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2021-10-24 10:24:38,500 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:24:38,500 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:24:38,501 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-10-24 10:24:38,501 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:24:38,501 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-10-24 10:24:38,501 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:24:38,502 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 40 41) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-10-24 10:24:38,502 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:24:38,502 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 10 16) the Hoare annotation is: (let ((.cse0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~a~0 .cse0) (= ULTIMATE.start_main_~b~0 .cse0))) [2021-10-24 10:24:38,502 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:24:38,503 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:24:38,503 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:24:38,503 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 2) (= ULTIMATE.start_main_~p~0 1) (<= ULTIMATE.start_main_~x~0 2) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (let ((.cse0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~a~0 .cse0) (= ULTIMATE.start_main_~b~0 .cse0)))) [2021-10-24 10:24:38,504 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:24:38,504 INFO L853 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: (or (let ((.cse0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~a~0 .cse0) (= ULTIMATE.start_main_~b~0 .cse0))) (and (<= ULTIMATE.start_main_~y~0 2) (<= ULTIMATE.start_main_~x~0 2) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) [2021-10-24 10:24:38,504 INFO L857 garLoopResultBuilder]: For program point L11-18(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:24:38,504 INFO L860 garLoopResultBuilder]: At program point L11-20(lines 10 16) the Hoare annotation is: true [2021-10-24 10:24:38,505 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:24:38,505 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:24:38,505 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:24:38,505 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:24:38,505 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:24:38,506 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:24:38,506 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:24:38,506 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:24:38,506 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:24:38,507 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:24:38,507 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:24:38,507 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:24:38,507 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:24:38,507 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) .cse0) (and (<= ULTIMATE.start_main_~y~0 2) (= ULTIMATE.start_main_~p~0 1) (<= ULTIMATE.start_main_~x~0 2) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-24 10:24:38,513 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:24:38,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:24:38 BoogieIcfgContainer [2021-10-24 10:24:38,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:24:38,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:24:38,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:24:38,540 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:24:38,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:24:17" (3/4) ... [2021-10-24 10:24:38,544 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:24:38,558 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-10-24 10:24:38,558 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-24 10:24:38,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-24 10:24:38,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:24:38,609 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:24:38,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:24:38,611 INFO L168 Benchmark]: Toolchain (without parser) took 21623.47 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 80.8 MB in the beginning and 168.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:24:38,612 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 117.4 MB. Free memory was 97.3 MB in the beginning and 97.2 MB in the end (delta: 72.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:24:38,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.92 ms. Allocated memory is still 117.4 MB. Free memory was 80.6 MB in the beginning and 93.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:24:38,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.89 ms. Allocated memory is still 117.4 MB. Free memory was 93.7 MB in the beginning and 92.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:24:38,613 INFO L168 Benchmark]: Boogie Preprocessor took 25.99 ms. Allocated memory is still 117.4 MB. Free memory was 92.0 MB in the beginning and 90.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:24:38,614 INFO L168 Benchmark]: RCFGBuilder took 606.68 ms. Allocated memory is still 117.4 MB. Free memory was 90.7 MB in the beginning and 73.3 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:24:38,614 INFO L168 Benchmark]: TraceAbstraction took 20602.18 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 72.6 MB in the beginning and 172.7 MB in the end (delta: -100.1 MB). Peak memory consumption was 102.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:24:38,614 INFO L168 Benchmark]: Witness Printer took 70.82 ms. Allocated memory is still 207.6 MB. Free memory was 172.7 MB in the beginning and 168.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:24:38,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 117.4 MB. Free memory was 97.3 MB in the beginning and 97.2 MB in the end (delta: 72.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.92 ms. Allocated memory is still 117.4 MB. Free memory was 80.6 MB in the beginning and 93.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.89 ms. Allocated memory is still 117.4 MB. Free memory was 93.7 MB in the beginning and 92.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.99 ms. Allocated memory is still 117.4 MB. Free memory was 92.0 MB in the beginning and 90.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 606.68 ms. Allocated memory is still 117.4 MB. Free memory was 90.7 MB in the beginning and 73.3 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20602.18 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 72.6 MB in the beginning and 172.7 MB in the end (delta: -100.1 MB). Peak memory consumption was 102.6 MB. Max. memory is 16.1 GB. * Witness Printer took 70.82 ms. Allocated memory is still 207.6 MB. Free memory was 172.7 MB in the beginning and 168.5 MB in the end (delta: 4.2 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: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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, 32 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 20511.0ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 13.5ms, AutomataDifference: 3909.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3481.3ms, InitialAbstractionConstructionTime: 10.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 133 SDtfs, 361 SDslu, 231 SDs, 0 SdLazy, 419 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1065.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 117 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 6646.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=1, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 89.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 71 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 31 NumberOfFragments, 338 HoareAnnotationTreeSize, 8 FomulaSimplifications, 222 FormulaSimplificationTreeSizeReduction, 109.8ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 3038 FormulaSimplificationTreeSizeReductionInter, 3362.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 56.3ms SsaConstructionTime, 157.9ms SatisfiabilityAnalysisTime, 4307.5ms InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 146 ConstructedInterpolants, 1 QuantifiedInterpolants, 1905 SizeOfPredicates, 70 NumberOfNonLiveVariables, 616 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 4/24 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 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((s * y + q * x == b && 1 <= cond) && q * r + 1 == p * s) && a == r * y + p * x) && b == r * y + p * x) || ((((((y <= 2 && x <= 2) && 1 <= y) && q == 0) && s == 1) && 1 <= x) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((s * y + q * x == b && q * r + 1 == p * s) && 1 == cond) && a == r * y + p * x - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((s * y + q * x == b && 1 <= cond) && q * r + 1 == p * s) && a == r * y + p * x) || (((((((((y <= 2 && p == 1) && x <= 2) && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((s * y + q * x == b && 1 <= cond) && q * r + 1 == p * s) && a == r * y + p * x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((s * y + q * x == b && q * r + 1 == p * s) && 1 == cond) && a == r * y + p * x) && b == r * y + p * x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((a == x && y <= 2) && p == 1) && x <= 2) && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && b == y) || ((((s * y + q * x == b && q * r + 1 == p * s) && 1 == cond) && a == r * y + p * x) && b == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((s * y + q * x == b && 1 <= cond) && q * r + 1 == p * s) && a == r * y + p * x RESULT: Ultimate proved your program to be correct! [2021-10-24 10:24:38,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c34df4c5-4483-49fd-a071-76abe8961a25/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...