./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4da533f9027cb26869f2cd2349cd7115ebf62144e1d11b018683e8601f934a1d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:41:26,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:41:26,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:41:26,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:41:26,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:41:26,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:41:26,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:41:26,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:41:26,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:41:26,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:41:26,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:41:26,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:41:26,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:41:26,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:41:26,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:41:26,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:41:26,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:41:26,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:41:26,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:41:26,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:41:26,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:41:26,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:41:26,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:41:26,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:41:26,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:41:26,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:41:26,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:41:26,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:41:26,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:41:26,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:41:26,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:41:26,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:41:26,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:41:26,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:41:26,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:41:26,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:41:26,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:41:26,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:41:26,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:41:26,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:41:26,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:41:26,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:41:26,318 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:41:26,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:41:26,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:41:26,320 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:41:26,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:41:26,320 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:41:26,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:41:26,321 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:41:26,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:41:26,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:41:26,328 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:41:26,328 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:41:26,329 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:41:26,329 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:41:26,329 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:41:26,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:41:26,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:41:26,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:41:26,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:41:26,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:41:26,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:41:26,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:41:26,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:41:26,331 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:41:26,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:41:26,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:41:26,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:41:26,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:41:26,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:41:26,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:41:26,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:26,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:41:26,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:41:26,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:41:26,336 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:41:26,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:41:26,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:41:26,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:41:26,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:41:26,337 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_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4da533f9027cb26869f2cd2349cd7115ebf62144e1d11b018683e8601f934a1d [2021-11-07 01:41:26,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:41:26,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:41:26,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:41:26,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:41:26,631 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:41:26,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2021-11-07 01:41:26,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/data/b90163c82/8eb4c37dc724402b8e8567e8fec3bf8d/FLAG56b41739f [2021-11-07 01:41:27,196 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:41:27,198 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2021-11-07 01:41:27,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/data/b90163c82/8eb4c37dc724402b8e8567e8fec3bf8d/FLAG56b41739f [2021-11-07 01:41:27,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/data/b90163c82/8eb4c37dc724402b8e8567e8fec3bf8d [2021-11-07 01:41:27,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:41:27,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:41:27,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:27,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:41:27,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:41:27,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2678fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27, skipping insertion in model container [2021-11-07 01:41:27,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:41:27,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:41:27,849 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_7111026f-3803-4f2a-9fd5-f39ca6516950/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2021-11-07 01:41:27,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:27,875 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:41:27,887 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_7111026f-3803-4f2a-9fd5-f39ca6516950/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2021-11-07 01:41:27,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:27,909 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:41:27,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27 WrapperNode [2021-11-07 01:41:27,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:27,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:41:27,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:41:27,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:41:27,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:41:27,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:41:27,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:41:27,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:41:27,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:41:27,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:41:27,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:41:27,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:41:27,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (1/1) ... [2021-11-07 01:41:27,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:27,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:28,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:41:28,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:41:28,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:41:28,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:41:28,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:41:28,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:41:28,434 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:41:28,435 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-11-07 01:41:28,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:28 BoogieIcfgContainer [2021-11-07 01:41:28,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:41:28,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:41:28,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:41:28,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:41:28,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:41:27" (1/3) ... [2021-11-07 01:41:28,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5098a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:28, skipping insertion in model container [2021-11-07 01:41:28,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27" (2/3) ... [2021-11-07 01:41:28,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5098a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:28, skipping insertion in model container [2021-11-07 01:41:28,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:28" (3/3) ... [2021-11-07 01:41:28,460 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound100.c [2021-11-07 01:41:28,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:41:28,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 01:41:28,545 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:41:28,551 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:41:28,551 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 01:41:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 01:41:28,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:28,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 01:41:28,572 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)] === [2021-11-07 01:41:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:28,578 INFO L85 PathProgramCache]: Analyzing trace with hash 5453836, now seen corresponding path program 1 times [2021-11-07 01:41:28,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:41:28,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507745490] [2021-11-07 01:41:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:28,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:41:28,682 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:41:28,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163777709] [2021-11-07 01:41:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:28,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:28,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:28,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:28,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:41:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:28,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:41:28,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:29,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:29,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:41:29,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507745490] [2021-11-07 01:41:29,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:41:29,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163777709] [2021-11-07 01:41:29,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163777709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:29,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:29,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:41:29,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859284552] [2021-11-07 01:41:29,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:41:29,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:41:29,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:41:29,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:41:29,152 INFO L87 Difference]: Start difference. First operand has 34 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 33 states have internal predecessors, (44), 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) [2021-11-07 01:41:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:29,314 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2021-11-07 01:41:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:41:29,316 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 [2021-11-07 01:41:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:29,326 INFO L225 Difference]: With dead ends: 75 [2021-11-07 01:41:29,326 INFO L226 Difference]: Without dead ends: 38 [2021-11-07 01:41:29,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:41:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-07 01:41:29,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2021-11-07 01:41:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 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) [2021-11-07 01:41:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-07 01:41:29,374 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 4 [2021-11-07 01:41:29,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:29,374 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-07 01:41:29,375 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) [2021-11-07 01:41:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-07 01:41:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:41:29,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:29,376 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:41:29,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:29,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-07 01:41:29,594 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)] === [2021-11-07 01:41:29,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash 946325295, now seen corresponding path program 1 times [2021-11-07 01:41:29,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:41:29,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445102028] [2021-11-07 01:41:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:29,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:41:29,628 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:41:29,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772553319] [2021-11-07 01:41:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:29,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:29,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:29,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:29,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:41:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:29,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:41:29,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:29,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:29,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:41:29,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445102028] [2021-11-07 01:41:29,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:41:29,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772553319] [2021-11-07 01:41:29,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772553319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:29,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:29,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:41:29,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55196579] [2021-11-07 01:41:29,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:41:29,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:41:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:41:29,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:41:29,889 INFO L87 Difference]: Start difference. First operand 26 states and 27 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) [2021-11-07 01:41:29,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:29,972 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2021-11-07 01:41:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:41:29,973 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 [2021-11-07 01:41:29,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:29,974 INFO L225 Difference]: With dead ends: 52 [2021-11-07 01:41:29,974 INFO L226 Difference]: Without dead ends: 44 [2021-11-07 01:41:29,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:41:29,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-07 01:41:29,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-11-07 01:41:29,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-11-07 01:41:29,994 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 6 [2021-11-07 01:41:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:29,995 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-11-07 01:41:29,995 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) [2021-11-07 01:41:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-11-07 01:41:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:41:29,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:29,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:30,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:30,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:30,211 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:41:30,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1120146711, now seen corresponding path program 1 times [2021-11-07 01:41:30,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:41:30,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176615788] [2021-11-07 01:41:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:30,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:41:30,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:41:30,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633635592] [2021-11-07 01:41:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:30,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:30,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:30,230 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:30,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:41:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:30,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:41:30,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:30,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:30,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:41:30,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176615788] [2021-11-07 01:41:30,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:41:30,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633635592] [2021-11-07 01:41:30,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633635592] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:30,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:30,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:41:30,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115458881] [2021-11-07 01:41:30,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:41:30,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:41:30,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:41:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:41:30,423 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:30,485 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-11-07 01:41:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:41:30,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 01:41:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:30,488 INFO L225 Difference]: With dead ends: 44 [2021-11-07 01:41:30,488 INFO L226 Difference]: Without dead ends: 42 [2021-11-07 01:41:30,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:41:30,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-07 01:41:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-11-07 01:41:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-07 01:41:30,508 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 13 [2021-11-07 01:41:30,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:30,509 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-07 01:41:30,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-07 01:41:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:41:30,513 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:30,513 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:30,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:30,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:30,727 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:41:30,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1053678152, now seen corresponding path program 1 times [2021-11-07 01:41:30,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:41:30,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655264567] [2021-11-07 01:41:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:30,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:41:30,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:41:30,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828142458] [2021-11-07 01:41:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:30,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:30,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:30,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:30,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:41:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:30,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:41:30,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:31,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:31,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:41:31,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655264567] [2021-11-07 01:41:31,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:41:31,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828142458] [2021-11-07 01:41:31,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828142458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:31,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1140300535] [2021-11-07 01:41:31,283 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-07 01:41:31,284 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:41:31,293 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:41:31,300 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:41:31,300 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:41:31,375 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.1 percent of original size [2021-11-07 01:41:31,379 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:31,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:41:31,385 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:31,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:41:31,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:41:31,424 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-07 01:41:31,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:41:31,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:41:31,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:41:31,468 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:31,486 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:41:31,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:41:31,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:41:31,488 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:31,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:31,580 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:31,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:41:31,608 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:41:31,611 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:41:31,634 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:31,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:31,647 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,651 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:41:31,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:41:31,654 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:41:31,654 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:308, output treesize:125 [2021-11-07 01:41:31,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-11-07 01:41:31,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:41:31,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 01:41:31,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-07 01:41:31,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:41:31,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:41:31,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:41:31,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-11-07 01:41:31,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 01:41:31,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,861 INFO L185 QuantifierPusher]: treesize reduction 10, result has 94.4 percent of original size 170 [2021-11-07 01:41:31,873 INFO L180 QuantifierPusher]: treesize reduction 10, result has 95.3 percent of original size [2021-11-07 01:41:31,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-11-07 01:41:31,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:41:31,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:31,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-07 01:41:31,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:31,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:31,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:32,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 227 [2021-11-07 01:41:32,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,340 INFO L180 QuantifierPusher]: treesize reduction 36, result has 76.2 percent of original size [2021-11-07 01:41:32,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-07 01:41:32,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:32,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 01:41:32,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:32,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:32,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-11-07 01:41:32,604 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:41:35,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:41:35,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:41:35,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-07 01:41:35,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431765864] [2021-11-07 01:41:35,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:41:35,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:41:35,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:41:35,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:41:35,308 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:35,732 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-11-07 01:41:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:41:35,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 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 19 [2021-11-07 01:41:35,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:35,733 INFO L225 Difference]: With dead ends: 70 [2021-11-07 01:41:35,733 INFO L226 Difference]: Without dead ends: 60 [2021-11-07 01:41:35,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:41:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-07 01:41:35,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 32. [2021-11-07 01:41:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:35,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-11-07 01:41:35,742 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 19 [2021-11-07 01:41:35,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:35,742 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-11-07 01:41:35,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:35,743 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-11-07 01:41:35,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:41:35,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:35,744 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:35,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-07 01:41:35,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:35,959 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:41:35,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash 955253726, now seen corresponding path program 1 times [2021-11-07 01:41:35,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:41:35,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025985562] [2021-11-07 01:41:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:35,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:41:35,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:41:35,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402772517] [2021-11-07 01:41:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:35,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:35,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:35,978 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:36,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:41:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:36,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:41:36,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:36,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:36,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:41:36,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025985562] [2021-11-07 01:41:36,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:41:36,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402772517] [2021-11-07 01:41:36,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402772517] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:36,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:36,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 01:41:36,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046001185] [2021-11-07 01:41:36,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:41:36,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:41:36,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:41:36,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:41:36,277 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:36,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:36,344 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2021-11-07 01:41:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:41:36,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 26 [2021-11-07 01:41:36,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:36,349 INFO L225 Difference]: With dead ends: 75 [2021-11-07 01:41:36,349 INFO L226 Difference]: Without dead ends: 52 [2021-11-07 01:41:36,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:41:36,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-07 01:41:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-11-07 01:41:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2021-11-07 01:41:36,365 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 26 [2021-11-07 01:41:36,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:36,366 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2021-11-07 01:41:36,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2021-11-07 01:41:36,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 01:41:36,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:36,367 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:36,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:36,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:36,583 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)] === [2021-11-07 01:41:36,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash 226573641, now seen corresponding path program 1 times [2021-11-07 01:41:36,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:41:36,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086058826] [2021-11-07 01:41:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:36,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:41:36,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:41:36,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570230431] [2021-11-07 01:41:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:36,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:36,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:36,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:36,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 01:41:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:36,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:41:36,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:36,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:37,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:41:37,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086058826] [2021-11-07 01:41:37,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:41:37,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570230431] [2021-11-07 01:41:37,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570230431] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:37,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [780632220] [2021-11-07 01:41:37,292 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-07 01:41:37,292 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:41:37,293 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:41:37,293 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:41:37,293 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:41:37,317 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.1 percent of original size [2021-11-07 01:41:37,318 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:37,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:41:37,320 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:37,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:41:37,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:41:37,332 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-07 01:41:37,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:41:37,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:41:37,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:41:37,343 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:37,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:41:37,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:41:37,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:41:37,361 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:37,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:37,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:37,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:41:37,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:41:37,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:41:37,406 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:37,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:37,413 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,417 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:41:37,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:41:37,420 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:41:37,421 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:308, output treesize:125 [2021-11-07 01:41:37,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-11-07 01:41:37,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:41:37,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 01:41:37,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-07 01:41:37,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:41:37,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-07 01:41:37,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-11-07 01:41:37,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-07 01:41:37,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:41:37,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-07 01:41:37,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-11-07 01:41:37,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:37,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:37,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:37,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:37,643 INFO L180 QuantifierPusher]: treesize reduction 71, result has 73.9 percent of original size [2021-11-07 01:41:37,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-11-07 01:41:37,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-11-07 01:41:37,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:37,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:37,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:37,818 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 01:41:37,824 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:37,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-07 01:41:37,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 01:41:37,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 425 [2021-11-07 01:41:37,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:37,911 INFO L185 QuantifierPusher]: treesize reduction 14, result has 96.7 percent of original size 412 [2021-11-07 01:41:37,925 INFO L180 QuantifierPusher]: treesize reduction 14, result has 96.9 percent of original size [2021-11-07 01:41:37,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 421 [2021-11-07 01:41:37,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,001 INFO L185 QuantifierPusher]: treesize reduction 14, result has 96.7 percent of original size 412 [2021-11-07 01:41:38,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,023 INFO L185 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size 392 [2021-11-07 01:41:38,033 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.3 percent of original size [2021-11-07 01:41:38,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 458 [2021-11-07 01:41:38,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,173 INFO L180 QuantifierPusher]: treesize reduction 36, result has 72.9 percent of original size [2021-11-07 01:41:38,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-07 01:41:38,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-07 01:41:38,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,252 INFO L180 QuantifierPusher]: treesize reduction 36, result has 71.0 percent of original size [2021-11-07 01:41:38,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-07 01:41:38,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-07 01:41:38,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,274 INFO L185 QuantifierPusher]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-11-07 01:41:38,279 INFO L180 QuantifierPusher]: treesize reduction 6, result has 95.2 percent of original size [2021-11-07 01:41:38,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:41:38,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,300 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:38,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:41:38,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 01:41:38,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,318 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.8 percent of original size 90 [2021-11-07 01:41:38,322 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size [2021-11-07 01:41:38,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-07 01:41:38,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:41:38,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:41:38,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:41:38,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:41:38,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:41:38,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,396 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:38,396 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-07 01:41:38,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-07 01:41:38,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:41:38,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:41:38,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:41:38,430 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:41:38,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:41:38,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:41:38,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:41:38,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:41:38,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:41:38,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:38,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:38,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:41:38,659 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:41:39,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:41:39,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:41:39,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-07 01:41:39,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943049889] [2021-11-07 01:41:39,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:41:39,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:41:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:41:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:41:39,439 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:39,937 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-11-07 01:41:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:41:39,938 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 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 35 [2021-11-07 01:41:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:39,938 INFO L225 Difference]: With dead ends: 103 [2021-11-07 01:41:39,939 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:41:39,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=299, Invalid=1423, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 01:41:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:41:39,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:41:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:39,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:41:39,941 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-11-07 01:41:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:39,942 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:41:39,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:41:39,942 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:41:39,945 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:41:39,945 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:41:39,945 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:41:39,946 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:41:39,946 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:41:39,946 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:41:39,946 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:41:39,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:40,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:40,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:41:40,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:40,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:40,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:40,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:40,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:40,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:40,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:40,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:40,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:41,174 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:41:41,175 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:41:41,175 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:41:41,175 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:41:41,175 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_main_~b~0 .cse3)) (.cse2 (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) .cse3) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 100) .cse1 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) .cse2) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~y~0) .cse1 .cse2) (and (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) .cse0 .cse1 .cse2)))) [2021-11-07 01:41:41,175 INFO L857 garLoopResultBuilder]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2021-11-07 01:41:41,175 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:41:41,175 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:41:41,175 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2021-11-07 01:41:41,176 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:41:41,176 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:41:41,176 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~b~0 .cse3)) (.cse2 (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) .cse3) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) (or (and .cse0 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse1 .cse2) (and .cse0 (<= 0 ULTIMATE.start_main_~y~0) .cse1 .cse2)))) [2021-11-07 01:41:41,176 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:41:41,176 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 42 43) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~b~0 .cse3)) (.cse2 (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) .cse3) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) (or (and .cse0 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse1 .cse2) (and .cse0 (<= 0 ULTIMATE.start_main_~y~0) .cse1 .cse2)))) [2021-11-07 01:41:41,176 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:41:41,176 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:41:41,176 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:41:41,176 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:41:41,177 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:41:41,177 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 52 53) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:41:41,177 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:41:41,177 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:41:41,177 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:41:41,178 INFO L853 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) [2021-11-07 01:41:41,178 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:41:41,178 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:41:41,178 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:41:41,178 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:41:41,178 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:41:41,179 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:41:41,179 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:41:41,179 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:41:41,179 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:41:41,179 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:41:41,182 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-07 01:41:41,184 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:41:41,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:41:41 BoogieIcfgContainer [2021-11-07 01:41:41,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:41:41,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:41:41,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:41:41,208 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:41:41,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:28" (3/4) ... [2021-11-07 01:41:41,212 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:41:41,222 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-11-07 01:41:41,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-07 01:41:41,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:41:41,224 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:41:41,275 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:41:41,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:41:41,276 INFO L168 Benchmark]: Toolchain (without parser) took 13693.21 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 72.0 MB in the beginning and 140.5 MB in the end (delta: -68.6 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:41,277 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory was 55.9 MB in the beginning and 55.8 MB in the end (delta: 45.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:41:41,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.40 ms. Allocated memory is still 100.7 MB. Free memory was 72.0 MB in the beginning and 76.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:41,277 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.43 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 75.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:41,278 INFO L168 Benchmark]: Boogie Preprocessor took 25.03 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 74.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:41,278 INFO L168 Benchmark]: RCFGBuilder took 463.97 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 58.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:41,283 INFO L168 Benchmark]: TraceAbstraction took 12767.45 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 58.0 MB in the beginning and 143.7 MB in the end (delta: -85.7 MB). Peak memory consumption was 85.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:41,283 INFO L168 Benchmark]: Witness Printer took 67.55 ms. Allocated memory is still 211.8 MB. Free memory was 143.7 MB in the beginning and 140.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:41,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory was 55.9 MB in the beginning and 55.8 MB in the end (delta: 45.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.40 ms. Allocated memory is still 100.7 MB. Free memory was 72.0 MB in the beginning and 76.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.43 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 75.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.03 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 74.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 463.97 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 58.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12767.45 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 58.0 MB in the beginning and 143.7 MB in the end (delta: -85.7 MB). Peak memory consumption was 85.9 MB. Max. memory is 16.1 GB. * Witness Printer took 67.55 ms. Allocated memory is still 211.8 MB. Free memory was 143.7 MB in the beginning and 140.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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, 34 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 265 SDslu, 153 SDs, 0 SdLazy, 388 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 275 GetRequests, 185 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=5, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 52 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 57 NumberOfFragments, 333 HoareAnnotationTreeSize, 9 FomulaSimplifications, 995 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 3224 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 1004 SizeOfPredicates, 32 NumberOfNonLiveVariables, 557 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 39/78 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: 14]: Loop Invariant Derived loop invariant: b == a * y - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((1 <= cond && 0 <= y) && 0 <= r) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((1 <= cond && 0 <= y) && 0 <= r) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((1 <= cond && 0 <= y) && 0 <= r) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((1 <= cond && 0 <= y) && 0 <= r) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((1 <= cond && r < y) && b <= y) && b == a * y) && r + q * y + a * y == b + x) || (((1 <= cond && 0 <= y) && b == a * y) && r + q * y + a * y == b + x) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((1 <= cond && 0 <= y) && 0 <= r) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((b <= y && 1 <= y) && y <= 100) && b == a * y) && r == x) && r + q * y + a * y == b + x) || (((1 <= cond && 0 <= y) && b == a * y) && r + q * y + a * y == b + x)) || (((r < y && b <= y) && b == a * y) && r + q * y + a * y == b + x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((1 <= cond && r < y) && b <= y) && b == a * y) && r + q * y + a * y == b + x) || (((1 <= cond && 0 <= y) && b == a * y) && r + q * y + a * y == b + x) RESULT: Ultimate proved your program to be correct! [2021-11-07 01:41:41,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111026f-3803-4f2a-9fd5-f39ca6516950/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE