./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:48:22,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:48:22,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:48:22,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:48:22,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:48:22,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:48:22,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:48:22,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:48:22,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:48:22,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:48:22,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:48:22,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:48:22,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:48:22,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:48:22,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:48:22,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:48:22,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:48:22,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:48:22,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:48:22,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:48:22,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:48:22,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:48:22,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:48:22,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:48:22,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:48:22,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:48:22,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:48:22,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:48:22,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:48:22,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:48:22,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:48:22,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:48:22,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:48:22,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:48:22,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:48:22,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:48:22,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:48:22,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:48:22,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:48:22,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:48:22,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:48:22,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:48:22,920 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:48:22,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:48:22,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:48:22,922 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:48:22,922 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:48:22,922 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:48:22,922 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:48:22,922 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:48:22,922 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:48:22,923 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:48:22,923 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:48:22,923 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:48:22,923 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:48:22,923 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:48:22,924 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:48:22,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:48:22,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:48:22,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:48:22,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:48:22,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:48:22,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:48:22,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:48:22,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:48:22,926 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:48:22,926 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:48:22,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:48:22,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:48:22,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:48:22,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:48:22,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:48:22,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:48:22,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:48:22,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:48:22,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:48:22,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:48:22,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:48:22,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:48:22,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:48:22,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:48:22,929 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_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 [2021-10-24 09:48:23,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:48:23,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:48:23,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:48:23,249 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:48:23,249 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:48:23,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2021-10-24 09:48:23,342 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/data/490f19d56/2796ab5e35c94459bea1a141e363f324/FLAG0a14da640 [2021-10-24 09:48:23,889 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:48:23,889 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2021-10-24 09:48:23,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/data/490f19d56/2796ab5e35c94459bea1a141e363f324/FLAG0a14da640 [2021-10-24 09:48:24,215 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/data/490f19d56/2796ab5e35c94459bea1a141e363f324 [2021-10-24 09:48:24,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:48:24,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:48:24,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:48:24,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:48:24,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:48:24,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5457e861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24, skipping insertion in model container [2021-10-24 09:48:24,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:48:24,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:48:24,478 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_7f5b787d-4c09-4e2f-9357-6560d54b319e/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2021-10-24 09:48:24,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:48:24,512 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:48:24,532 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_7f5b787d-4c09-4e2f-9357-6560d54b319e/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2021-10-24 09:48:24,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:48:24,571 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:48:24,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24 WrapperNode [2021-10-24 09:48:24,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:48:24,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:48:24,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:48:24,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:48:24,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:48:24,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:48:24,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:48:24,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:48:24,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:48:24,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:48:24,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:48:24,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:48:24,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (1/1) ... [2021-10-24 09:48:24,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:48:24,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:24,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:48:24,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:48:24,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:48:24,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:48:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:48:24,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:48:25,090 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:48:25,091 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-24 09:48:25,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:25 BoogieIcfgContainer [2021-10-24 09:48:25,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:48:25,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:48:25,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:48:25,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:48:25,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:48:24" (1/3) ... [2021-10-24 09:48:25,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc580a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:48:25, skipping insertion in model container [2021-10-24 09:48:25,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:24" (2/3) ... [2021-10-24 09:48:25,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc580a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:48:25, skipping insertion in model container [2021-10-24 09:48:25,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:25" (3/3) ... [2021-10-24 09:48:25,105 INFO L111 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2021-10-24 09:48:25,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:48:25,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-24 09:48:25,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:48:25,167 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:48:25,167 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-24 09:48:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.6875) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:25,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 09:48:25,198 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:25,199 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:25,199 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:25,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1231245506, now seen corresponding path program 1 times [2021-10-24 09:48:25,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:25,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126197095] [2021-10-24 09:48:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:25,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:25,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:25,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126197095] [2021-10-24 09:48:25,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126197095] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:25,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:25,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:48:25,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771237066] [2021-10-24 09:48:25,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:48:25,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:25,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:48:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:48:25,400 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.6875) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:25,418 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2021-10-24 09:48:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:48:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 09:48:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:25,428 INFO L225 Difference]: With dead ends: 78 [2021-10-24 09:48:25,428 INFO L226 Difference]: Without dead ends: 38 [2021-10-24 09:48:25,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:48:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-24 09:48:25,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-24 09:48:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.3) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-10-24 09:48:25,495 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 8 [2021-10-24 09:48:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:25,495 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-10-24 09:48:25,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-10-24 09:48:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:48:25,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:25,497 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:25,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:48:25,498 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:25,500 INFO L82 PathProgramCache]: Analyzing trace with hash 431783130, now seen corresponding path program 1 times [2021-10-24 09:48:25,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:25,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870299634] [2021-10-24 09:48:25,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:25,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:25,688 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:25,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870299634] [2021-10-24 09:48:25,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870299634] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:25,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:25,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 09:48:25,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128069314] [2021-10-24 09:48:25,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:48:25,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:25,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:48:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:48:25,698 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:25,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:25,817 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-10-24 09:48:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:48:25,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 09:48:25,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:25,820 INFO L225 Difference]: With dead ends: 42 [2021-10-24 09:48:25,821 INFO L226 Difference]: Without dead ends: 36 [2021-10-24 09:48:25,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:48:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-24 09:48:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-10-24 09:48:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-10-24 09:48:25,835 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 9 [2021-10-24 09:48:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:25,836 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-10-24 09:48:25,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-10-24 09:48:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:48:25,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:25,838 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:25,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:48:25,838 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:25,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:25,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1668081891, now seen corresponding path program 1 times [2021-10-24 09:48:25,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:25,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471306527] [2021-10-24 09:48:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:25,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:25,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:25,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471306527] [2021-10-24 09:48:25,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471306527] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:25,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:25,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 09:48:25,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421946262] [2021-10-24 09:48:25,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:48:25,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:25,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:48:25,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:48:25,964 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:26,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:26,128 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-10-24 09:48:26,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:48:26,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:48:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:26,131 INFO L225 Difference]: With dead ends: 48 [2021-10-24 09:48:26,132 INFO L226 Difference]: Without dead ends: 44 [2021-10-24 09:48:26,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:48:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-24 09:48:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-10-24 09:48:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-10-24 09:48:26,152 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 11 [2021-10-24 09:48:26,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:26,153 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-10-24 09:48:26,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-10-24 09:48:26,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 09:48:26,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:26,156 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:26,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 09:48:26,157 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:26,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:26,158 INFO L82 PathProgramCache]: Analyzing trace with hash 494361339, now seen corresponding path program 1 times [2021-10-24 09:48:26,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:26,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282192079] [2021-10-24 09:48:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:26,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:26,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:26,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282192079] [2021-10-24 09:48:26,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282192079] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:26,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:26,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 09:48:26,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470575226] [2021-10-24 09:48:26,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:48:26,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:26,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:48:26,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:48:26,257 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-10-24 09:48:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:26,344 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2021-10-24 09:48:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:48:26,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 [2021-10-24 09:48:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:26,350 INFO L225 Difference]: With dead ends: 52 [2021-10-24 09:48:26,350 INFO L226 Difference]: Without dead ends: 50 [2021-10-24 09:48:26,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:48:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-24 09:48:26,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2021-10-24 09:48:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-10-24 09:48:26,367 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 13 [2021-10-24 09:48:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:26,369 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-10-24 09:48:26,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-10-24 09:48:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-10-24 09:48:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 09:48:26,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:26,372 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:26,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 09:48:26,372 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:26,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:26,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1775966595, now seen corresponding path program 1 times [2021-10-24 09:48:26,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:26,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104001758] [2021-10-24 09:48:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:26,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:26,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:26,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104001758] [2021-10-24 09:48:26,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104001758] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:26,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:26,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-24 09:48:26,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651292008] [2021-10-24 09:48:26,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:48:26,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:26,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:48:26,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:48:26,499 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:26,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:26,669 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2021-10-24 09:48:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:48:26,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-24 09:48:26,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:26,672 INFO L225 Difference]: With dead ends: 70 [2021-10-24 09:48:26,672 INFO L226 Difference]: Without dead ends: 56 [2021-10-24 09:48:26,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:48:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-24 09:48:26,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2021-10-24 09:48:26,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-10-24 09:48:26,696 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 15 [2021-10-24 09:48:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:26,697 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-10-24 09:48:26,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-10-24 09:48:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 09:48:26,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:26,699 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:26,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 09:48:26,700 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:26,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1659965986, now seen corresponding path program 1 times [2021-10-24 09:48:26,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:26,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864327215] [2021-10-24 09:48:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:26,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:26,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:26,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864327215] [2021-10-24 09:48:26,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864327215] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:26,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:26,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-24 09:48:26,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873435577] [2021-10-24 09:48:26,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:48:26,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:26,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:48:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:48:26,820 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:26,964 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-24 09:48:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:48:26,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-24 09:48:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:26,967 INFO L225 Difference]: With dead ends: 61 [2021-10-24 09:48:26,968 INFO L226 Difference]: Without dead ends: 59 [2021-10-24 09:48:26,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-24 09:48:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-24 09:48:26,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2021-10-24 09:48:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:26,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-10-24 09:48:26,991 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 15 [2021-10-24 09:48:26,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:26,991 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-10-24 09:48:26,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-10-24 09:48:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 09:48:26,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:26,994 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:26,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 09:48:26,995 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:26,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:26,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1079570878, now seen corresponding path program 1 times [2021-10-24 09:48:26,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:27,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227380841] [2021-10-24 09:48:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:27,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:27,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:27,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227380841] [2021-10-24 09:48:27,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227380841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:48:27,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72539429] [2021-10-24 09:48:27,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:27,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:27,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:27,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:48:27,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 09:48:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:27,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:48:27,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:48:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:27,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:48:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:27,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72539429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:48:27,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1294797505] [2021-10-24 09:48:27,548 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-24 09:48:27,548 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:48:27,553 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:48:27,558 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:48:27,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:48:27,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,599 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:27,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 09:48:27,603 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:27,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 09:48:27,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-24 09:48:27,634 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-10-24 09:48:27,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:27,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-24 09:48:27,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:27,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:27,663 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:27,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:27,686 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:27,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:27,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:27,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:27,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-24 09:48:27,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:27,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:27,718 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:27,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:27,729 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-24 09:48:27,735 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:48:27,735 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-24 09:48:27,750 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-24 09:48:27,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:48:27,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,793 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:27,806 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-24 09:48:27,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 09:48:27,827 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:27,840 INFO L185 QuantifierPusher]: treesize reduction 7, result has 94.8 percent of original size 127 [2021-10-24 09:48:27,853 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.4 percent of original size [2021-10-24 09:48:27,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 09:48:27,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:27,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:27,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:27,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:27,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:27,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:27,997 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:28,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:28,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:28,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:28,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:28,049 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:28,059 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-24 09:48:28,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-24 09:48:28,097 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:28,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:28,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:28,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:28,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:28,149 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:28,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:28,314 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:48:30,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1294797505] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:30,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:48:30,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 5, 5] total 20 [2021-10-24 09:48:30,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977708914] [2021-10-24 09:48:30,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-24 09:48:30,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:30,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-24 09:48:30,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-24 09:48:30,004 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:32,191 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-10-24 09:48:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-24 09:48:32,192 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-24 09:48:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:32,193 INFO L225 Difference]: With dead ends: 52 [2021-10-24 09:48:32,193 INFO L226 Difference]: Without dead ends: 50 [2021-10-24 09:48:32,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3604.2ms TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2021-10-24 09:48:32,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-24 09:48:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-24 09:48:32,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-10-24 09:48:32,203 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 23 [2021-10-24 09:48:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:32,204 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-10-24 09:48:32,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:32,204 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-10-24 09:48:32,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 09:48:32,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:32,205 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:32,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:48:32,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-24 09:48:32,431 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:32,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1055594250, now seen corresponding path program 1 times [2021-10-24 09:48:32,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:32,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033870647] [2021-10-24 09:48:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:32,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:32,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:32,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033870647] [2021-10-24 09:48:32,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033870647] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:48:32,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216753361] [2021-10-24 09:48:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:32,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:32,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:32,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:48:32,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 09:48:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:32,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 09:48:32,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:48:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:32,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:48:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:33,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216753361] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:48:33,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1695162165] [2021-10-24 09:48:33,154 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-10-24 09:48:33,154 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:48:33,154 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:48:33,155 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:48:33,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:48:33,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,177 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:33,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 09:48:33,179 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:33,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 09:48:33,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-24 09:48:33,187 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-10-24 09:48:33,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:33,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-24 09:48:33,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:33,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:33,199 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:33,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,212 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:33,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:33,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:33,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:33,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-24 09:48:33,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:33,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:33,231 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:33,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,235 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-24 09:48:33,238 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:48:33,238 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-24 09:48:33,251 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-24 09:48:33,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:48:33,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,270 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:33,280 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-24 09:48:33,288 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:33,294 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-24 09:48:33,303 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:33,308 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size [2021-10-24 09:48:33,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-24 09:48:33,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,364 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:33,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:33,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:33,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,404 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:33,408 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-24 09:48:33,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-24 09:48:33,425 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:33,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:33,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:33,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,459 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:33,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:33,604 INFO L180 QuantifierPusher]: treesize reduction 32, result has 64.4 percent of original size [2021-10-24 09:48:33,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-24 09:48:33,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,617 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-24 09:48:33,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:33,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:33,646 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:33,651 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:48:35,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:48:35,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:48:35,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-10-24 09:48:35,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560877036] [2021-10-24 09:48:35,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-24 09:48:35,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-24 09:48:35,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2021-10-24 09:48:35,835 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:36,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:36,654 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2021-10-24 09:48:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-24 09:48:36,655 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 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 25 [2021-10-24 09:48:36,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:36,657 INFO L225 Difference]: With dead ends: 115 [2021-10-24 09:48:36,657 INFO L226 Difference]: Without dead ends: 88 [2021-10-24 09:48:36,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 43 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2867.3ms TimeCoverageRelationStatistics Valid=541, Invalid=2765, Unknown=0, NotChecked=0, Total=3306 [2021-10-24 09:48:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-24 09:48:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2021-10-24 09:48:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 69 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2021-10-24 09:48:36,675 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 25 [2021-10-24 09:48:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:36,675 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2021-10-24 09:48:36,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2021-10-24 09:48:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 09:48:36,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:36,677 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:36,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:48:36,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:36,895 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:36,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1914628965, now seen corresponding path program 1 times [2021-10-24 09:48:36,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:36,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134932274] [2021-10-24 09:48:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:36,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:36,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:36,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134932274] [2021-10-24 09:48:36,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134932274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:48:36,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231848599] [2021-10-24 09:48:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:36,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:36,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:36,953 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:48:36,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 09:48:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:37,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 09:48:37,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:48:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:37,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:48:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:37,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231848599] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:48:37,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [185977727] [2021-10-24 09:48:37,429 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-24 09:48:37,429 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:48:37,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:48:37,430 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:48:37,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:48:37,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,446 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:37,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 09:48:37,447 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:37,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 09:48:37,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-24 09:48:37,470 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 10=[|v_#valid_11|]} [2021-10-24 09:48:37,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:37,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-24 09:48:37,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:37,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:37,479 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:37,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,485 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:37,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:37,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:37,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:37,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-24 09:48:37,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:37,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:37,507 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:37,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,515 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-24 09:48:37,519 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:48:37,519 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-24 09:48:37,528 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-24 09:48:37,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:48:37,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,541 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:37,548 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-24 09:48:37,554 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:37,559 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-24 09:48:37,566 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:37,572 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size [2021-10-24 09:48:37,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-24 09:48:37,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,611 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:37,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:37,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:37,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,633 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:37,636 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-24 09:48:37,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-24 09:48:37,650 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:37,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:37,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:37,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:37,673 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:37,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:37,767 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:48:39,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:48:39,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:48:39,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-10-24 09:48:39,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894501822] [2021-10-24 09:48:39,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 09:48:39,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:39,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 09:48:39,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-10-24 09:48:39,165 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:39,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:39,381 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2021-10-24 09:48:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-24 09:48:39,382 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 25 [2021-10-24 09:48:39,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:39,383 INFO L225 Difference]: With dead ends: 72 [2021-10-24 09:48:39,383 INFO L226 Difference]: Without dead ends: 70 [2021-10-24 09:48:39,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 51 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1582.7ms TimeCoverageRelationStatistics Valid=178, Invalid=878, Unknown=0, NotChecked=0, Total=1056 [2021-10-24 09:48:39,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-24 09:48:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-24 09:48:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.121212121212121) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-10-24 09:48:39,396 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 25 [2021-10-24 09:48:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:39,396 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-10-24 09:48:39,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-10-24 09:48:39,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-24 09:48:39,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:39,398 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:39,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:48:39,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-24 09:48:39,615 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:39,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:39,615 INFO L82 PathProgramCache]: Analyzing trace with hash 162589740, now seen corresponding path program 2 times [2021-10-24 09:48:39,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:39,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195984633] [2021-10-24 09:48:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:39,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:39,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:39,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195984633] [2021-10-24 09:48:39,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195984633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:48:39,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306968874] [2021-10-24 09:48:39,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 09:48:39,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:39,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:39,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:48:39,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 09:48:39,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-24 09:48:39,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:48:39,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-24 09:48:39,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:48:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:40,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:48:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:40,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306968874] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:48:40,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [352103508] [2021-10-24 09:48:40,491 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-24 09:48:40,491 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:48:40,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:48:40,492 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:48:40,492 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:48:40,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,500 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:40,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 09:48:40,502 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:40,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 09:48:40,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-24 09:48:40,512 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_12|]} [2021-10-24 09:48:40,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:40,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-24 09:48:40,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:40,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:40,524 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:40,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,533 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:40,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:40,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:40,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:40,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-24 09:48:40,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:40,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:40,550 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:40,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-24 09:48:40,557 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:48:40,558 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-24 09:48:40,565 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-24 09:48:40,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:48:40,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,582 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:40,587 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-24 09:48:40,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 09:48:40,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,612 INFO L185 QuantifierPusher]: treesize reduction 7, result has 94.8 percent of original size 127 [2021-10-24 09:48:40,617 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.4 percent of original size [2021-10-24 09:48:40,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 09:48:40,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,681 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:40,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:40,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:40,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,699 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:40,703 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-24 09:48:40,706 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-24 09:48:40,714 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:40,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:40,722 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:40,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:40,744 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:40,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:40,854 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:48:42,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:48:42,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:48:42,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-10-24 09:48:42,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548194057] [2021-10-24 09:48:42,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-24 09:48:42,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:42,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-24 09:48:42,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2021-10-24 09:48:42,457 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:43,101 INFO L93 Difference]: Finished difference Result 122 states and 126 transitions. [2021-10-24 09:48:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-24 09:48:43,101 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 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 [2021-10-24 09:48:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:43,102 INFO L225 Difference]: With dead ends: 122 [2021-10-24 09:48:43,103 INFO L226 Difference]: Without dead ends: 120 [2021-10-24 09:48:43,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 75 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2171.2ms TimeCoverageRelationStatistics Valid=440, Invalid=2212, Unknown=0, NotChecked=0, Total=2652 [2021-10-24 09:48:43,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-24 09:48:43,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 74. [2021-10-24 09:48:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.1) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:43,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-10-24 09:48:43,117 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 35 [2021-10-24 09:48:43,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:43,118 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-10-24 09:48:43,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:43,118 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-10-24 09:48:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-24 09:48:43,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:43,120 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:43,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:48:43,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:43,342 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:43,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:43,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1565920216, now seen corresponding path program 2 times [2021-10-24 09:48:43,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:43,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417133865] [2021-10-24 09:48:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:43,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:43,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:43,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417133865] [2021-10-24 09:48:43,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417133865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:48:43,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076338843] [2021-10-24 09:48:43,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 09:48:43,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:43,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:43,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:48:43,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 09:48:43,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-24 09:48:43,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:48:43,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-24 09:48:43,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:48:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-24 09:48:43,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:48:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-24 09:48:44,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076338843] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:48:44,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1912922116] [2021-10-24 09:48:44,203 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-10-24 09:48:44,204 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:48:44,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:48:44,204 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:48:44,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:48:44,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,223 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:44,224 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 09:48:44,224 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:44,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,225 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 09:48:44,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-24 09:48:44,229 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 10=[|v_#valid_13|]} [2021-10-24 09:48:44,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:44,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-24 09:48:44,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:44,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:44,240 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:44,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,244 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:44,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:44,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:44,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:44,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-24 09:48:44,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:44,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:44,266 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:44,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,269 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-24 09:48:44,272 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:48:44,273 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-24 09:48:44,284 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-24 09:48:44,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:48:44,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,318 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:44,325 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-24 09:48:44,332 INFO L185 QuantifierPusher]: treesize reduction 5, result has 96.0 percent of original size 120 [2021-10-24 09:48:44,337 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.6 percent of original size [2021-10-24 09:48:44,350 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:44,361 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size [2021-10-24 09:48:44,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-24 09:48:44,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,411 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:44,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:44,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:44,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,441 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:44,445 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-24 09:48:44,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-24 09:48:44,458 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:44,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:44,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:44,481 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,485 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:44,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:44,612 INFO L180 QuantifierPusher]: treesize reduction 32, result has 64.4 percent of original size [2021-10-24 09:48:44,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-24 09:48:44,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-24 09:48:44,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:44,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:44,649 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:44,653 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:48:46,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:48:46,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:48:46,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 18 [2021-10-24 09:48:46,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432685567] [2021-10-24 09:48:46,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-24 09:48:46,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:46,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-24 09:48:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2021-10-24 09:48:46,903 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:47,223 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2021-10-24 09:48:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-24 09:48:47,223 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 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 45 [2021-10-24 09:48:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:47,224 INFO L225 Difference]: With dead ends: 74 [2021-10-24 09:48:47,224 INFO L226 Difference]: Without dead ends: 56 [2021-10-24 09:48:47,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 99 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 2637.6ms TimeCoverageRelationStatistics Valid=328, Invalid=1834, Unknown=0, NotChecked=0, Total=2162 [2021-10-24 09:48:47,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-24 09:48:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-24 09:48:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-10-24 09:48:47,236 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 45 [2021-10-24 09:48:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:47,237 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-10-24 09:48:47,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:47,237 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-10-24 09:48:47,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-24 09:48:47,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:47,239 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:47,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 09:48:47,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-10-24 09:48:47,458 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-24 09:48:47,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:47,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1979889530, now seen corresponding path program 3 times [2021-10-24 09:48:47,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:47,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756101094] [2021-10-24 09:48:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:47,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 09:48:47,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:47,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756101094] [2021-10-24 09:48:47,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756101094] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:48:47,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796022292] [2021-10-24 09:48:47,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-24 09:48:47,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:47,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:47,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:48:47,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-24 09:48:47,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-24 09:48:47,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:48:47,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-24 09:48:47,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:48:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:48,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:48:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:49,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796022292] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:48:49,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1794544447] [2021-10-24 09:48:49,431 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-24 09:48:49,431 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:48:49,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:48:49,432 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:48:49,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:48:49,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,440 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:49,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 09:48:49,442 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:48:49,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 09:48:49,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-24 09:48:49,448 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 10=[|v_#valid_14|]} [2021-10-24 09:48:49,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:49,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-24 09:48:49,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:49,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:48:49,458 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:49,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:49,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:49,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:49,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:48:49,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-24 09:48:49,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:49,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:48:49,478 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:48:49,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,482 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-24 09:48:49,484 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:48:49,485 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-24 09:48:49,494 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-24 09:48:49,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:48:49,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,514 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-24 09:48:49,518 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-24 09:48:49,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 09:48:49,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,533 INFO L185 QuantifierPusher]: treesize reduction 7, result has 94.8 percent of original size 127 [2021-10-24 09:48:49,538 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.4 percent of original size [2021-10-24 09:48:49,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-24 09:48:49,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,573 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:49,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:49,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:49,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,600 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:49,603 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-24 09:48:49,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-24 09:48:49,615 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-24 09:48:49,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 09:48:49,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-24 09:48:49,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:49,640 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-24 09:48:49,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:49,729 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:48:51,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:48:51,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:48:51,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 28 [2021-10-24 09:48:51,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314150786] [2021-10-24 09:48:51,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-24 09:48:51,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-24 09:48:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1343, Unknown=0, NotChecked=0, Total=1560 [2021-10-24 09:48:51,703 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:52,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:52,576 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2021-10-24 09:48:52,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-24 09:48:52,577 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 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 55 [2021-10-24 09:48:52,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:52,577 INFO L225 Difference]: With dead ends: 73 [2021-10-24 09:48:52,577 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:48:52,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 124 SyntacticMatches, 14 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 2998.4ms TimeCoverageRelationStatistics Valid=862, Invalid=3968, Unknown=0, NotChecked=0, Total=4830 [2021-10-24 09:48:52,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:48:52,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:48:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:48:52,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2021-10-24 09:48:52,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:52,581 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:48:52,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:48:52,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:48:52,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:48:52,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:48:52,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:48:52,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:48:52,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:48:52,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:48:52,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:48:52,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:48:52,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-24 09:48:52,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-24 09:48:52,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:48:52,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:52,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:52,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:52,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:53,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:53,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:53,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:53,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:53,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:54,793 INFO L853 garLoopResultBuilder]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse20 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= (select |#valid| |#t~string1.base|) 1)) (.cse1 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse2 (<= 0 ULTIMATE.start_main_~buf~0)) (.cse3 (= (select .cse20 (+ |#t~string0.offset| 1)) 0)) (.cse4 (= 2 (select |#length| |#t~string0.base|))) (.cse6 (<= 0 ULTIMATE.start_main_~in~0)) (.cse7 (<= ULTIMATE.start_main_~bufferlen~0 2147483647)) (.cse8 (= (select |#valid| 0) 0)) (.cse9 (= (select |#valid| |#t~string0.base|) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse12 (= (select |#length| |#t~string1.base|) 9)) (.cse13 (= 48 (select .cse20 |#t~string0.offset|))) (.cse14 (= |#t~string1.offset| 0)) (.cse15 (< 0 ULTIMATE.start_main_~inlen~0)) (.cse16 (= |#t~string0.offset| 0)) (.cse5 (+ ULTIMATE.start_main_~buflim~0 1)) (.cse17 (<= ULTIMATE.start_main_~inlen~0 2147483647)) (.cse18 (< 0 |#StackHeapBarrier|)) (.cse19 (= |#NULL.base| 0))) (or (and (= ULTIMATE.start_main_~buf~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~bufferlen~0)) (and .cse0 .cse1 .cse2 .cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse4 (<= 0 .cse5) .cse6 (<= ULTIMATE.start_main_~buflim~0 2147483645) (<= ULTIMATE.start_main_~buf~0 2) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= (+ 2 ULTIMATE.start_main_~buf~0) ULTIMATE.start_main_~bufferlen~0) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) .cse6 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 (< ULTIMATE.start_main_~buf~0 .cse5) .cse17 .cse18 .cse19)))) [2021-10-24 09:48:54,793 INFO L857 garLoopResultBuilder]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-10-24 09:48:54,793 INFO L853 garLoopResultBuilder]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0) (<= 0 ULTIMATE.start_main_~buf~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~bufferlen~0)) [2021-10-24 09:48:54,794 INFO L857 garLoopResultBuilder]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-10-24 09:48:54,794 INFO L860 garLoopResultBuilder]: At program point L18-23(lines 17 22) the Hoare annotation is: true [2021-10-24 09:48:54,794 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,794 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,794 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,795 INFO L857 garLoopResultBuilder]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,795 INFO L857 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,795 INFO L857 garLoopResultBuilder]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,795 INFO L857 garLoopResultBuilder]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,795 INFO L857 garLoopResultBuilder]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,796 INFO L857 garLoopResultBuilder]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,796 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,796 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:48:54,796 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 48) no Hoare annotation was computed. [2021-10-24 09:48:54,796 INFO L857 garLoopResultBuilder]: For program point L37-3(lines 37 48) no Hoare annotation was computed. [2021-10-24 09:48:54,796 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,797 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,797 INFO L860 garLoopResultBuilder]: At program point L55(lines 25 56) the Hoare annotation is: true [2021-10-24 09:48:54,797 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-10-24 09:48:54,797 INFO L857 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-10-24 09:48:54,797 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,797 INFO L857 garLoopResultBuilder]: For program point L31-1(lines 25 56) no Hoare annotation was computed. [2021-10-24 09:48:54,797 INFO L857 garLoopResultBuilder]: For program point L32(lines 25 56) no Hoare annotation was computed. [2021-10-24 09:48:54,797 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,797 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:48:54,797 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,797 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-24 09:48:54,798 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-24 09:48:54,798 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse18 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= (select |#valid| |#t~string1.base|) 1)) (.cse1 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse2 (= (select .cse18 (+ |#t~string0.offset| 1)) 0)) (.cse3 (= 2 (select |#length| |#t~string0.base|))) (.cse4 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0))) (.cse5 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= (select |#valid| |#t~string0.base|) 1)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse10 (= (select |#length| |#t~string1.base|) 9)) (.cse11 (= |ULTIMATE.start___VERIFIER_assert_#in~cond| (ite (<= 0 ULTIMATE.start_main_~buf~0) 1 0))) (.cse12 (= 48 (select .cse18 |#t~string0.offset|))) (.cse13 (= |#t~string1.offset| 0)) (.cse14 (= |#t~string0.offset| 0)) (.cse15 (<= ULTIMATE.start_main_~inlen~0 2147483647)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (and (<= 1 ULTIMATE.start_main_~in~0) .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse4 (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) .cse5 (<= ULTIMATE.start_main_~bufferlen~0 2147483647) (<= 1 ULTIMATE.start_main_~buf~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~buf~0 0) .cse4 (<= (+ 3 ULTIMATE.start_main_~buflim~0) ULTIMATE.start_main_~inlen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~in~0 0) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)))) [2021-10-24 09:48:54,798 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-24 09:48:54,798 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (<= 0 ULTIMATE.start_main_~buf~0) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= 2 (select |#length| |#t~string0.base|)) (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) (<= 0 ULTIMATE.start_main_~in~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0) (<= ULTIMATE.start_main_~bufferlen~0 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= (select |#length| |#t~string1.base|) 9) (= 48 (select .cse0 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (<= ULTIMATE.start_main_~inlen~0 2147483647) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-10-24 09:48:54,799 INFO L857 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-24 09:48:54,799 INFO L853 garLoopResultBuilder]: At program point L18-8(lines 17 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (<= 1 ULTIMATE.start_main_~in~0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= 2 (select |#length| |#t~string0.base|)) (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (<= ULTIMATE.start_main_~bufferlen~0 2147483647) (<= 1 ULTIMATE.start_main_~buf~0) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= (select |#length| |#t~string1.base|) 9) (= 48 (select .cse0 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1)) (<= ULTIMATE.start_main_~inlen~0 2147483647) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-10-24 09:48:54,799 INFO L857 garLoopResultBuilder]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-10-24 09:48:54,799 INFO L853 garLoopResultBuilder]: At program point L18-11(lines 17 48) the Hoare annotation is: (let ((.cse5 (+ 2 ULTIMATE.start_main_~buflim~0)) (.cse18 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= (select |#valid| |#t~string1.base|) 1)) (.cse1 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse2 (= (select .cse18 (+ |#t~string0.offset| 1)) 0)) (.cse3 (= 2 (select |#length| |#t~string0.base|))) (.cse4 (= ULTIMATE.start_main_~bufferlen~0 .cse5)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= (select |#valid| |#t~string0.base|) 1)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse10 (= (select |#length| |#t~string1.base|) 9)) (.cse11 (= 48 (select .cse18 |#t~string0.offset|))) (.cse12 (= |#t~string1.offset| 0)) (.cse13 (= |#t~string0.offset| 0)) (.cse14 (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1))) (.cse15 (<= ULTIMATE.start_main_~inlen~0 2147483647)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~in~0 0) .cse3 (= ULTIMATE.start_main_~buf~0 0) .cse4 (<= 0 ULTIMATE.start_main_~in~0) (< .cse5 ULTIMATE.start_main_~inlen~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17) (and (<= 1 ULTIMATE.start_main_~in~0) .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) .cse3 .cse4 (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (<= ULTIMATE.start_main_~bufferlen~0 2147483647) (<= 1 ULTIMATE.start_main_~buf~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)))) [2021-10-24 09:48:54,799 INFO L857 garLoopResultBuilder]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-10-24 09:48:54,799 INFO L853 garLoopResultBuilder]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse23 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~in~0)) (.cse1 (= (select |#valid| |#t~string1.base|) 1)) (.cse2 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse3 (= (select .cse23 (+ |#t~string0.offset| 1)) 0)) (.cse4 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1)) (.cse6 (= 2 (select |#length| |#t~string0.base|))) (.cse7 (< ULTIMATE.start_main_~in~0 ULTIMATE.start_main_~inlen~0)) (.cse8 (<= ULTIMATE.start___VERIFIER_assert_~cond 1)) (.cse19 (+ ULTIMATE.start_main_~buflim~0 1)) (.cse9 (<= ULTIMATE.start_main_~bufferlen~0 2147483647)) (.cse10 (<= 1 ULTIMATE.start_main_~buf~0)) (.cse11 (= (select |#valid| 0) 0)) (.cse12 (= (select |#valid| |#t~string0.base|) 1)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse15 (= (select |#length| |#t~string1.base|) 9)) (.cse16 (= 48 (select .cse23 |#t~string0.offset|))) (.cse17 (= |#t~string1.offset| 0)) (.cse18 (= |#t~string0.offset| 0)) (.cse20 (<= ULTIMATE.start_main_~inlen~0 2147483647)) (.cse21 (< 0 |#StackHeapBarrier|)) (.cse22 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 (< ULTIMATE.start_main_~buf~0 .cse19) .cse20 .cse21 .cse22) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= 0 .cse19) .cse8 (<= ULTIMATE.start_main_~buflim~0 2147483645) (not (= .cse19 ULTIMATE.start_main_~buf~0)) (<= ULTIMATE.start_main_~buf~0 2) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (<= (+ 2 ULTIMATE.start_main_~buf~0) ULTIMATE.start_main_~bufferlen~0) .cse16 .cse17 .cse18 .cse20 .cse21 .cse22) (and (= ULTIMATE.start_main_~buf~0 0) (= ULTIMATE.start_main_~in~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~bufferlen~0))))) [2021-10-24 09:48:54,799 INFO L857 garLoopResultBuilder]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-10-24 09:48:54,803 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:48:54,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:48:54 BoogieIcfgContainer [2021-10-24 09:48:54,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:48:54,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:48:54,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:48:54,848 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:48:54,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:25" (3/4) ... [2021-10-24 09:48:54,852 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:48:54,864 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-24 09:48:54,865 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-24 09:48:54,865 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 09:48:54,866 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:48:54,893 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && in <= 0) && 2 == unknown-#length-unknown["0"]) && buf == 0) && bufferlen == 2 + buflim) && 0 <= in) && 2 + buflim < inlen) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && cond <= 1) && in + 3 + buflim <= buf + inlen) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) [2021-10-24 09:48:54,893 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && in < inlen) && bufferlen == 2 + buflim) && cond <= 1) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && in < inlen) && 0 <= buflim + 1) && cond <= 1) && buflim <= 2147483645) && !(buflim + 1 == buf)) && buf <= 2) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 2 + buf <= bufferlen) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((buf == 0 && in == 0) && !(0 == cond)) && 2 <= bufferlen) [2021-10-24 09:48:54,894 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && cond <= 1) && in + 3 + buflim <= buf + inlen) && buf < buflim) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && \old(cond) == (if 0 <= buf then 1 else 0)) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && buf == 0) && bufferlen == 2 + buflim) && 3 + buflim <= inlen) && 1 == cond) && in == 0) && buf < buflim) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && \old(cond) == (if 0 <= buf then 1 else 0)) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) [2021-10-24 09:48:54,894 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && 0 <= buf) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && 0 <= in) && 1 == cond) && in + 3 + buflim <= buf + inlen) && buf < buflim) && bufferlen <= 2147483647) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 [2021-10-24 09:48:54,895 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((1 <= in && \old(cond) == cond) && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && in + 3 + buflim <= buf + inlen) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 [2021-10-24 09:48:54,913 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:48:54,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:48:54,914 INFO L168 Benchmark]: Toolchain (without parser) took 30694.13 ms. Allocated memory was 88.1 MB in the beginning and 163.6 MB in the end (delta: 75.5 MB). Free memory was 47.8 MB in the beginning and 57.5 MB in the end (delta: -9.8 MB). Peak memory consumption was 65.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:54,914 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 63.9 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:54,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.63 ms. Allocated memory is still 88.1 MB. Free memory was 47.6 MB in the beginning and 63.3 MB in the end (delta: -15.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:54,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.00 ms. Allocated memory is still 88.1 MB. Free memory was 63.3 MB in the beginning and 61.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:54,915 INFO L168 Benchmark]: Boogie Preprocessor took 28.88 ms. Allocated memory is still 88.1 MB. Free memory was 61.8 MB in the beginning and 60.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:54,916 INFO L168 Benchmark]: RCFGBuilder took 448.25 ms. Allocated memory is still 88.1 MB. Free memory was 60.5 MB in the beginning and 48.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:54,916 INFO L168 Benchmark]: TraceAbstraction took 29751.07 ms. Allocated memory was 88.1 MB in the beginning and 163.6 MB in the end (delta: 75.5 MB). Free memory was 47.8 MB in the beginning and 60.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 84.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:54,916 INFO L168 Benchmark]: Witness Printer took 65.53 ms. Allocated memory is still 163.6 MB. Free memory was 60.7 MB in the beginning and 57.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:54,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 63.9 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.63 ms. Allocated memory is still 88.1 MB. Free memory was 47.6 MB in the beginning and 63.3 MB in the end (delta: -15.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.00 ms. Allocated memory is still 88.1 MB. Free memory was 63.3 MB in the beginning and 61.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.88 ms. Allocated memory is still 88.1 MB. Free memory was 61.8 MB in the beginning and 60.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 448.25 ms. Allocated memory is still 88.1 MB. Free memory was 60.5 MB in the beginning and 48.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29751.07 ms. Allocated memory was 88.1 MB in the beginning and 163.6 MB in the end (delta: 75.5 MB). Free memory was 47.8 MB in the beginning and 60.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 84.6 MB. Max. memory is 16.1 GB. * Witness Printer took 65.53 ms. Allocated memory is still 163.6 MB. Free memory was 60.7 MB in the beginning and 57.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 41 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 29644.4ms, OverallIterations: 12, TraceHistogramMax: 5, EmptinessCheckTime: 33.1ms, AutomataDifference: 5850.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2006.1ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 300 SDtfs, 998 SDslu, 858 SDs, 0 SdLazy, 1049 SolverSat, 517 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1189.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 454 SyntacticMatches, 54 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5608 ImplicationChecksByTransitivity, 16067.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=10, InterpolantAutomatonStates: 163, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 170.6ms AutomataMinimizationTime, 12 MinimizatonAttempts, 87 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 53 NumberOfFragments, 1030 HoareAnnotationTreeSize, 9 FomulaSimplifications, 20322 FormulaSimplificationTreeSizeReduction, 339.8ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 2621 FormulaSimplificationTreeSizeReductionInter, 1656.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 92.7ms SsaConstructionTime, 413.5ms SatisfiabilityAnalysisTime, 4991.0ms InterpolantComputationTime, 487 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 671 ConstructedInterpolants, 0 QuantifiedInterpolants, 4430 SizeOfPredicates, 36 NumberOfNonLiveVariables, 642 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 50/558 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 767, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 15, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 36, TOOLS_POST_TIME[ms]: 403, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME[ms]: 385, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 143, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 56, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 153, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 119, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 6, DOMAIN_ISBOTTOM_APPLICATIONS: 15, DOMAIN_ISBOTTOM_TIME[ms]: 32, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 313, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 313, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 12, DAG_COMPRESSION_PROCESSED_NODES: 191, DAG_COMPRESSION_RETAINED_NODES: 49, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && in <= 0) && 2 == unknown-#length-unknown["0"]) && buf == 0) && bufferlen == 2 + buflim) && 0 <= in) && 2 + buflim < inlen) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && cond <= 1) && in + 3 + buflim <= buf + inlen) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && cond <= 1) && in + 3 + buflim <= buf + inlen) && buf < buflim) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && \old(cond) == (if 0 <= buf then 1 else 0)) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && buf == 0) && bufferlen == 2 + buflim) && 3 + buflim <= inlen) && 1 == cond) && in == 0) && buf < buflim) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && \old(cond) == (if 0 <= buf then 1 else 0)) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && 0 <= buf) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && 0 <= in) && 1 == cond) && in + 3 + buflim <= buf + inlen) && buf < buflim) && bufferlen <= 2147483647) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((buf == 0 && !(0 == cond)) && 2 <= bufferlen) || (((((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && 0 <= buf) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && 2 == unknown-#length-unknown["0"]) && 0 <= buflim + 1) && 0 <= in) && buflim <= 2147483645) && buf <= 2) && bufferlen <= 2147483647) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 2 + buf <= bufferlen) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && 0 < inlen) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && 0 <= buf) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && 0 <= in) && 1 == cond) && bufferlen <= 2147483647) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && 0 < inlen) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((buf + 1 <= bufferlen && 0 <= buf) && !(0 == cond)) && 2 <= bufferlen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && in < inlen) && bufferlen == 2 + buflim) && cond <= 1) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && in < inlen) && 0 <= buflim + 1) && cond <= 1) && buflim <= 2147483645) && !(buflim + 1 == buf)) && buf <= 2) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 2 + buf <= bufferlen) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((buf == 0 && in == 0) && !(0 == cond)) && 2 <= bufferlen) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((((((((((((((((((1 <= in && \old(cond) == cond) && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && in + 3 + buflim <= buf + inlen) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-24 09:48:55,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5b787d-4c09-4e2f-9357-6560d54b319e/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...