./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF --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 303e81240b0a1989638e497fa3fbaa4e2ebd948d9aafa1986663f2c99e7f43f3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:25:02,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:25:02,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:25:02,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:25:02,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:25:02,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:25:02,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:25:02,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:25:02,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:25:02,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:25:02,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:25:02,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:25:02,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:25:02,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:25:02,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:25:02,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:25:02,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:25:02,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:25:02,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:25:02,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:25:02,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:25:02,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:25:02,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:25:02,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:25:02,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:25:02,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:25:02,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:25:02,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:25:02,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:25:02,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:25:02,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:25:02,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:25:02,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:25:02,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:25:02,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:25:02,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:25:02,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:25:02,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:25:02,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:25:02,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:25:02,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:25:02,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:25:02,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:25:02,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:25:02,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:25:02,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:25:02,828 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:25:02,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:25:02,829 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:25:02,829 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:25:02,829 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:25:02,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:25:02,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:25:02,831 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:25:02,831 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:25:02,832 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:25:02,832 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:25:02,832 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:25:02,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:25:02,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:25:02,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:25:02,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:25:02,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:25:02,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:25:02,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:25:02,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:25:02,835 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:25:02,836 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:25:02,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:25:02,836 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:25:02,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:25:02,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:25:02,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:25:02,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:25:02,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:25:02,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:25:02,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:25:02,840 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:25:02,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:25:02,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:25:02,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:25:02,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:25:02,841 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_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 303e81240b0a1989638e497fa3fbaa4e2ebd948d9aafa1986663f2c99e7f43f3 [2021-11-12 23:25:03,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:25:03,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:25:03,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:25:03,217 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:25:03,217 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:25:03,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c [2021-11-12 23:25:03,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/data/3a6c245c8/2d6b731592544282b1e59a45c7f2706e/FLAG2d7667823 [2021-11-12 23:25:03,908 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:25:03,912 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/sv-benchmarks/c/eca-rers2012/Problem02_label15.c [2021-11-12 23:25:03,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/data/3a6c245c8/2d6b731592544282b1e59a45c7f2706e/FLAG2d7667823 [2021-11-12 23:25:04,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/data/3a6c245c8/2d6b731592544282b1e59a45c7f2706e [2021-11-12 23:25:04,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:25:04,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:25:04,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:25:04,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:25:04,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:25:04,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:25:04" (1/1) ... [2021-11-12 23:25:04,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aec3ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:04, skipping insertion in model container [2021-11-12 23:25:04,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:25:04" (1/1) ... [2021-11-12 23:25:04,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:25:04,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:25:04,738 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_bdf9fb58-a401-4dec-855a-54081224d371/sv-benchmarks/c/eca-rers2012/Problem02_label15.c[20193,20206] [2021-11-12 23:25:04,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:25:04,800 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:25:04,972 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_bdf9fb58-a401-4dec-855a-54081224d371/sv-benchmarks/c/eca-rers2012/Problem02_label15.c[20193,20206] [2021-11-12 23:25:04,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:25:05,013 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:25:05,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05 WrapperNode [2021-11-12 23:25:05,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:25:05,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:25:05,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:25:05,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:25:05,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (1/1) ... [2021-11-12 23:25:05,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (1/1) ... [2021-11-12 23:25:05,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:25:05,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:25:05,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:25:05,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:25:05,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (1/1) ... [2021-11-12 23:25:05,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (1/1) ... [2021-11-12 23:25:05,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (1/1) ... [2021-11-12 23:25:05,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (1/1) ... [2021-11-12 23:25:05,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (1/1) ... [2021-11-12 23:25:05,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (1/1) ... [2021-11-12 23:25:05,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (1/1) ... [2021-11-12 23:25:05,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:25:05,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:25:05,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:25:05,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:25:05,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (1/1) ... [2021-11-12 23:25:05,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:25:05,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:25:05,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:25:05,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:25:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:25:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:25:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:25:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:25:06,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:25:06,683 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:25:06,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:25:06 BoogieIcfgContainer [2021-11-12 23:25:06,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:25:06,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:25:06,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:25:06,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:25:06,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:25:04" (1/3) ... [2021-11-12 23:25:06,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20242c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:25:06, skipping insertion in model container [2021-11-12 23:25:06,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:05" (2/3) ... [2021-11-12 23:25:06,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20242c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:25:06, skipping insertion in model container [2021-11-12 23:25:06,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:25:06" (3/3) ... [2021-11-12 23:25:06,696 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label15.c [2021-11-12 23:25:06,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:25:06,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:25:06,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:25:06,760 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:25:06,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:25:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-12 23:25:06,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:06,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:06,789 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:06,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1814584087, now seen corresponding path program 1 times [2021-11-12 23:25:06,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:06,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902732809] [2021-11-12 23:25:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:06,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:07,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:07,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902732809] [2021-11-12 23:25:07,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902732809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:07,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:07,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:25:07,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999673024] [2021-11-12 23:25:07,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:07,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:07,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:07,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:07,258 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:07,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:07,870 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-11-12 23:25:07,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:07,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2021-11-12 23:25:07,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:07,887 INFO L225 Difference]: With dead ends: 251 [2021-11-12 23:25:07,887 INFO L226 Difference]: Without dead ends: 163 [2021-11-12 23:25:07,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:07,895 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 439.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.62ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 534.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:07,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 11 Invalid, 319 Unknown, 0 Unchecked, 7.62ms Time], IncrementalHoareTripleChecker [73 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 534.43ms Time] [2021-11-12 23:25:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-12 23:25:07,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-12 23:25:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-11-12 23:25:07,956 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-11-12 23:25:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:07,957 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-11-12 23:25:07,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-11-12 23:25:07,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-12 23:25:07,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:07,963 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:07,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:25:07,963 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash -329013783, now seen corresponding path program 1 times [2021-11-12 23:25:07,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:07,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93621503] [2021-11-12 23:25:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:07,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:08,046 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:08,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93621503] [2021-11-12 23:25:08,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93621503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:08,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:08,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:25:08,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998179093] [2021-11-12 23:25:08,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:08,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:08,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:08,051 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:08,446 INFO L93 Difference]: Finished difference Result 485 states and 936 transitions. [2021-11-12 23:25:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:08,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 91 [2021-11-12 23:25:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:08,450 INFO L225 Difference]: With dead ends: 485 [2021-11-12 23:25:08,451 INFO L226 Difference]: Without dead ends: 323 [2021-11-12 23:25:08,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:08,457 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 290.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.45ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 376.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:08,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 21 Invalid, 310 Unknown, 0 Unchecked, 3.45ms Time], IncrementalHoareTripleChecker [23 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 376.53ms Time] [2021-11-12 23:25:08,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-12 23:25:08,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2021-11-12 23:25:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.871900826446281) internal successors, (453), 242 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 453 transitions. [2021-11-12 23:25:08,516 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 453 transitions. Word has length 91 [2021-11-12 23:25:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:08,518 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 453 transitions. [2021-11-12 23:25:08,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 453 transitions. [2021-11-12 23:25:08,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-12 23:25:08,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:08,530 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:08,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:25:08,531 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:08,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1679360758, now seen corresponding path program 1 times [2021-11-12 23:25:08,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:08,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573031968] [2021-11-12 23:25:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:08,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:08,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:08,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573031968] [2021-11-12 23:25:08,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573031968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:08,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:08,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:25:08,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123769321] [2021-11-12 23:25:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:08,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:08,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:08,612 INFO L87 Difference]: Start difference. First operand 243 states and 453 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:09,002 INFO L93 Difference]: Finished difference Result 725 states and 1356 transitions. [2021-11-12 23:25:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:09,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2021-11-12 23:25:09,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:09,006 INFO L225 Difference]: With dead ends: 725 [2021-11-12 23:25:09,006 INFO L226 Difference]: Without dead ends: 483 [2021-11-12 23:25:09,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:09,009 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 79 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 311.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 370.09ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:09,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 64 Invalid, 300 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [46 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 370.09ms Time] [2021-11-12 23:25:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-12 23:25:09,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 403. [2021-11-12 23:25:09,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.7860696517412935) internal successors, (718), 402 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:09,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 718 transitions. [2021-11-12 23:25:09,041 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 718 transitions. Word has length 98 [2021-11-12 23:25:09,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:09,041 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 718 transitions. [2021-11-12 23:25:09,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:09,042 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 718 transitions. [2021-11-12 23:25:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 23:25:09,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:09,054 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:09,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:25:09,055 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1886019200, now seen corresponding path program 1 times [2021-11-12 23:25:09,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:09,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379428648] [2021-11-12 23:25:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:09,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:09,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:09,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379428648] [2021-11-12 23:25:09,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379428648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:09,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:09,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:25:09,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661931150] [2021-11-12 23:25:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:09,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:09,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:09,138 INFO L87 Difference]: Start difference. First operand 403 states and 718 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:09,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:09,475 INFO L93 Difference]: Finished difference Result 1205 states and 2151 transitions. [2021-11-12 23:25:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:09,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 102 [2021-11-12 23:25:09,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:09,481 INFO L225 Difference]: With dead ends: 1205 [2021-11-12 23:25:09,482 INFO L226 Difference]: Without dead ends: 803 [2021-11-12 23:25:09,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:09,486 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 97 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 249.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 308.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:09,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 30 Invalid, 313 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 308.05ms Time] [2021-11-12 23:25:09,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-11-12 23:25:09,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2021-11-12 23:25:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.6454293628808865) internal successors, (1188), 722 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1188 transitions. [2021-11-12 23:25:09,539 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1188 transitions. Word has length 102 [2021-11-12 23:25:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:09,540 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1188 transitions. [2021-11-12 23:25:09,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:09,550 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1188 transitions. [2021-11-12 23:25:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-12 23:25:09,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:09,554 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:09,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:25:09,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash 862385438, now seen corresponding path program 1 times [2021-11-12 23:25:09,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:09,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972503021] [2021-11-12 23:25:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:09,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-12 23:25:09,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:09,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972503021] [2021-11-12 23:25:09,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972503021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:09,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:09,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:25:09,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359138240] [2021-11-12 23:25:09,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:09,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:09,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:09,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:09,682 INFO L87 Difference]: Start difference. First operand 723 states and 1188 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:10,053 INFO L93 Difference]: Finished difference Result 1605 states and 2610 transitions. [2021-11-12 23:25:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:10,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 128 [2021-11-12 23:25:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:10,060 INFO L225 Difference]: With dead ends: 1605 [2021-11-12 23:25:10,060 INFO L226 Difference]: Without dead ends: 883 [2021-11-12 23:25:10,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:10,065 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.25ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 328.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:10,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 70 Invalid, 295 Unknown, 0 Unchecked, 2.25ms Time], IncrementalHoareTripleChecker [45 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 328.12ms Time] [2021-11-12 23:25:10,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-11-12 23:25:10,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-11-12 23:25:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.5453514739229024) internal successors, (1363), 882 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1363 transitions. [2021-11-12 23:25:10,094 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1363 transitions. Word has length 128 [2021-11-12 23:25:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:10,094 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1363 transitions. [2021-11-12 23:25:10,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1363 transitions. [2021-11-12 23:25:10,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-12 23:25:10,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:10,099 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:10,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 23:25:10,099 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:10,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:10,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1901983935, now seen corresponding path program 1 times [2021-11-12 23:25:10,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:10,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271212762] [2021-11-12 23:25:10,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:10,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-12 23:25:10,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:10,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271212762] [2021-11-12 23:25:10,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271212762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:10,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:10,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:25:10,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752300208] [2021-11-12 23:25:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:10,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:10,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:10,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:10,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:10,176 INFO L87 Difference]: Start difference. First operand 883 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:10,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:10,554 INFO L93 Difference]: Finished difference Result 2245 states and 3460 transitions. [2021-11-12 23:25:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:10,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 133 [2021-11-12 23:25:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:10,563 INFO L225 Difference]: With dead ends: 2245 [2021-11-12 23:25:10,563 INFO L226 Difference]: Without dead ends: 1363 [2021-11-12 23:25:10,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:10,571 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 267.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 337.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:10,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 139 Invalid, 314 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [73 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 337.01ms Time] [2021-11-12 23:25:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-11-12 23:25:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2021-11-12 23:25:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.4045521292217327) internal successors, (1913), 1362 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1913 transitions. [2021-11-12 23:25:10,625 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1913 transitions. Word has length 133 [2021-11-12 23:25:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:10,626 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1913 transitions. [2021-11-12 23:25:10,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1913 transitions. [2021-11-12 23:25:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-12 23:25:10,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:10,631 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:10,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 23:25:10,631 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:10,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1486173925, now seen corresponding path program 1 times [2021-11-12 23:25:10,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:10,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361885686] [2021-11-12 23:25:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:10,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:10,697 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-12 23:25:10,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:10,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361885686] [2021-11-12 23:25:10,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361885686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:10,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:10,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:25:10,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525530196] [2021-11-12 23:25:10,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:10,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:10,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:10,700 INFO L87 Difference]: Start difference. First operand 1363 states and 1913 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:11,052 INFO L93 Difference]: Finished difference Result 3205 states and 4430 transitions. [2021-11-12 23:25:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:11,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 135 [2021-11-12 23:25:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:11,066 INFO L225 Difference]: With dead ends: 3205 [2021-11-12 23:25:11,066 INFO L226 Difference]: Without dead ends: 1843 [2021-11-12 23:25:11,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:11,077 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 73 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 311.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:11,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 30 Invalid, 318 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [85 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 311.56ms Time] [2021-11-12 23:25:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2021-11-12 23:25:11,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1683. [2021-11-12 23:25:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.3394768133174793) internal successors, (2253), 1682 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2253 transitions. [2021-11-12 23:25:11,129 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2253 transitions. Word has length 135 [2021-11-12 23:25:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:11,129 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2253 transitions. [2021-11-12 23:25:11,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2253 transitions. [2021-11-12 23:25:11,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-12 23:25:11,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:11,135 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:11,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 23:25:11,136 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:11,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:11,137 INFO L85 PathProgramCache]: Analyzing trace with hash 497090661, now seen corresponding path program 1 times [2021-11-12 23:25:11,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:11,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898424779] [2021-11-12 23:25:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:11,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-12 23:25:11,220 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:11,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898424779] [2021-11-12 23:25:11,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898424779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:11,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:11,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:25:11,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186393776] [2021-11-12 23:25:11,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:11,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:11,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:11,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:11,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:11,223 INFO L87 Difference]: Start difference. First operand 1683 states and 2253 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:11,607 INFO L93 Difference]: Finished difference Result 3205 states and 4325 transitions. [2021-11-12 23:25:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:11,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 139 [2021-11-12 23:25:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:11,617 INFO L225 Difference]: With dead ends: 3205 [2021-11-12 23:25:11,617 INFO L226 Difference]: Without dead ends: 1523 [2021-11-12 23:25:11,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:11,623 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 70 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.54ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 342.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:11,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 145 Invalid, 290 Unknown, 0 Unchecked, 2.54ms Time], IncrementalHoareTripleChecker [66 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 342.66ms Time] [2021-11-12 23:25:11,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-11-12 23:25:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2021-11-12 23:25:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.283180026281209) internal successors, (1953), 1522 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1953 transitions. [2021-11-12 23:25:11,667 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1953 transitions. Word has length 139 [2021-11-12 23:25:11,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:11,668 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1953 transitions. [2021-11-12 23:25:11,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1953 transitions. [2021-11-12 23:25:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-12 23:25:11,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:11,674 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:11,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 23:25:11,675 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:11,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:11,675 INFO L85 PathProgramCache]: Analyzing trace with hash -687530883, now seen corresponding path program 1 times [2021-11-12 23:25:11,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:11,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588350118] [2021-11-12 23:25:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:11,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:11,764 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-12 23:25:11,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:11,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588350118] [2021-11-12 23:25:11,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588350118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:11,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:11,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:25:11,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810359135] [2021-11-12 23:25:11,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:11,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:11,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:11,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:11,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:11,767 INFO L87 Difference]: Start difference. First operand 1523 states and 1953 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:12,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:12,115 INFO L93 Difference]: Finished difference Result 3045 states and 3905 transitions. [2021-11-12 23:25:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:12,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 157 [2021-11-12 23:25:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:12,125 INFO L225 Difference]: With dead ends: 3045 [2021-11-12 23:25:12,126 INFO L226 Difference]: Without dead ends: 1523 [2021-11-12 23:25:12,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:12,131 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 50 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 249.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.38ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 310.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:12,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 143 Invalid, 284 Unknown, 0 Unchecked, 2.38ms Time], IncrementalHoareTripleChecker [31 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 310.61ms Time] [2021-11-12 23:25:12,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-11-12 23:25:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2021-11-12 23:25:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.2470433639947438) internal successors, (1898), 1522 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1898 transitions. [2021-11-12 23:25:12,175 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1898 transitions. Word has length 157 [2021-11-12 23:25:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:12,175 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1898 transitions. [2021-11-12 23:25:12,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1898 transitions. [2021-11-12 23:25:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-12 23:25:12,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:12,199 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:12,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 23:25:12,199 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:12,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:12,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1455504653, now seen corresponding path program 1 times [2021-11-12 23:25:12,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:12,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582098391] [2021-11-12 23:25:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:12,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-12 23:25:12,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:12,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582098391] [2021-11-12 23:25:12,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582098391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:12,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:12,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:25:12,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438390579] [2021-11-12 23:25:12,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:12,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:12,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:12,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:12,301 INFO L87 Difference]: Start difference. First operand 1523 states and 1898 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:12,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:12,731 INFO L93 Difference]: Finished difference Result 3685 states and 4705 transitions. [2021-11-12 23:25:12,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 178 [2021-11-12 23:25:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:12,746 INFO L225 Difference]: With dead ends: 3685 [2021-11-12 23:25:12,746 INFO L226 Difference]: Without dead ends: 2163 [2021-11-12 23:25:12,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:12,750 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 62 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 381.54ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:12,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 119 Invalid, 325 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [80 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 381.54ms Time] [2021-11-12 23:25:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-11-12 23:25:12,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2021-11-12 23:25:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2502312673450509) internal successors, (2703), 2162 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2703 transitions. [2021-11-12 23:25:12,819 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2703 transitions. Word has length 178 [2021-11-12 23:25:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:12,821 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 2703 transitions. [2021-11-12 23:25:12,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2703 transitions. [2021-11-12 23:25:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-12 23:25:12,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:12,828 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:12,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 23:25:12,828 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:12,829 INFO L85 PathProgramCache]: Analyzing trace with hash -464477684, now seen corresponding path program 1 times [2021-11-12 23:25:12,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:25:12,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737292166] [2021-11-12 23:25:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:12,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:25:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:13,076 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:13,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:25:13,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737292166] [2021-11-12 23:25:13,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737292166] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:25:13,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653865080] [2021-11-12 23:25:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:13,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:25:13,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:25:13,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:25:13,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:25:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:13,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:25:13,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-12 23:25:13,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-12 23:25:14,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653865080] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:14,137 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:25:14,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-12 23:25:14,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506428528] [2021-11-12 23:25:14,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:14,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:14,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:25:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:25:14,143 INFO L87 Difference]: Start difference. First operand 2163 states and 2703 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:14,522 INFO L93 Difference]: Finished difference Result 4643 states and 5814 transitions. [2021-11-12 23:25:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:14,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 178 [2021-11-12 23:25:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:14,525 INFO L225 Difference]: With dead ends: 4643 [2021-11-12 23:25:14,525 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 23:25:14,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:25:14,530 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 258.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 327.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:14,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 28 Invalid, 304 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [63 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 327.89ms Time] [2021-11-12 23:25:14,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 23:25:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 23:25:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 23:25:14,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2021-11-12 23:25:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:14,533 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 23:25:14,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 23:25:14,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 23:25:14,537 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:25:14,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:14,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:25:14,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 23:25:15,358 INFO L858 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-11-12 23:25:15,358 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-11-12 23:25:15,358 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-11-12 23:25:15,359 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-11-12 23:25:15,359 INFO L858 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-11-12 23:25:15,359 INFO L858 garLoopResultBuilder]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2021-11-12 23:25:15,359 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-11-12 23:25:15,359 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-11-12 23:25:15,359 INFO L858 garLoopResultBuilder]: For program point L571-1(lines 39 608) no Hoare annotation was computed. [2021-11-12 23:25:15,359 INFO L858 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-11-12 23:25:15,359 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-11-12 23:25:15,360 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-11-12 23:25:15,360 INFO L858 garLoopResultBuilder]: For program point L572(line 572) no Hoare annotation was computed. [2021-11-12 23:25:15,360 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-11-12 23:25:15,360 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-11-12 23:25:15,360 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-11-12 23:25:15,360 INFO L858 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-11-12 23:25:15,360 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-11-12 23:25:15,360 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-11-12 23:25:15,361 INFO L858 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-11-12 23:25:15,361 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-11-12 23:25:15,361 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-11-12 23:25:15,361 INFO L858 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-11-12 23:25:15,361 INFO L858 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-11-12 23:25:15,361 INFO L858 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-11-12 23:25:15,361 INFO L858 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-11-12 23:25:15,361 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-11-12 23:25:15,361 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-11-12 23:25:15,362 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-11-12 23:25:15,362 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 23:25:15,362 INFO L858 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-11-12 23:25:15,362 INFO L858 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-11-12 23:25:15,362 INFO L858 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-11-12 23:25:15,362 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-11-12 23:25:15,362 INFO L858 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-11-12 23:25:15,362 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-11-12 23:25:15,362 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-11-12 23:25:15,362 INFO L858 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-11-12 23:25:15,363 INFO L858 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-11-12 23:25:15,363 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 572) no Hoare annotation was computed. [2021-11-12 23:25:15,363 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-11-12 23:25:15,363 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-11-12 23:25:15,363 INFO L858 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-11-12 23:25:15,363 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-11-12 23:25:15,363 INFO L858 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-11-12 23:25:15,363 INFO L858 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-11-12 23:25:15,363 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-11-12 23:25:15,363 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-11-12 23:25:15,364 INFO L858 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-11-12 23:25:15,364 INFO L858 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-11-12 23:25:15,364 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-11-12 23:25:15,364 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-11-12 23:25:15,364 INFO L858 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-11-12 23:25:15,364 INFO L858 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-11-12 23:25:15,364 INFO L858 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-11-12 23:25:15,364 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-11-12 23:25:15,365 INFO L854 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (= ~a11~0 0)) (.cse2 (= ~a25~0 1)) (.cse0 (= ~a19~0 1)) (.cse4 (<= ~a28~0 10)) (.cse1 (= ~a25~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4) (and (<= 10 ~a28~0) .cse4 .cse0) (and (<= 9 ~a28~0) .cse2 (<= ~a28~0 9)) (and .cse3 .cse1) (and .cse2 (<= 8 ~a17~0) .cse4) (and .cse2 .cse0) (and .cse4 .cse1))) [2021-11-12 23:25:15,365 INFO L858 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-11-12 23:25:15,365 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-11-12 23:25:15,365 INFO L861 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-11-12 23:25:15,365 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-12 23:25:15,365 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-11-12 23:25:15,365 INFO L858 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-11-12 23:25:15,365 INFO L858 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-11-12 23:25:15,366 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-11-12 23:25:15,366 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 23:25:15,366 INFO L858 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-11-12 23:25:15,366 INFO L858 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-11-12 23:25:15,366 INFO L854 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (= ~a11~0 0)) (.cse2 (= ~a25~0 1)) (.cse0 (= ~a19~0 1)) (.cse4 (<= ~a28~0 10)) (.cse1 (= ~a25~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4) (and (<= 10 ~a28~0) .cse4 .cse0) (and (<= 9 ~a28~0) .cse2 (<= ~a28~0 9)) (and .cse3 .cse1) (and .cse2 (<= 8 ~a17~0) .cse4) (and .cse2 .cse0) (and .cse4 .cse1))) [2021-11-12 23:25:15,366 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-11-12 23:25:15,366 INFO L858 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-11-12 23:25:15,367 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-11-12 23:25:15,367 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-11-12 23:25:15,367 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-11-12 23:25:15,367 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-11-12 23:25:15,367 INFO L858 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-11-12 23:25:15,367 INFO L858 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-11-12 23:25:15,367 INFO L858 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-11-12 23:25:15,367 INFO L858 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-11-12 23:25:15,368 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-11-12 23:25:15,368 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-11-12 23:25:15,368 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-11-12 23:25:15,368 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-11-12 23:25:15,368 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-11-12 23:25:15,368 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-11-12 23:25:15,372 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:15,374 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:25:15,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:25:15 BoogieIcfgContainer [2021-11-12 23:25:15,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:25:15,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:25:15,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:25:15,395 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:25:15,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:25:06" (3/4) ... [2021-11-12 23:25:15,398 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 23:25:15,422 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 115 nodes and edges [2021-11-12 23:25:15,424 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-11-12 23:25:15,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-12 23:25:15,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 23:25:15,579 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:25:15,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:25:15,580 INFO L158 Benchmark]: Toolchain (without parser) took 11427.09ms. Allocated memory was 88.1MB in the beginning and 176.2MB in the end (delta: 88.1MB). Free memory was 50.3MB in the beginning and 66.1MB in the end (delta: -15.8MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2021-11-12 23:25:15,581 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 88.1MB. Free memory was 68.2MB in the beginning and 68.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:25:15,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 853.18ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 50.1MB in the beginning and 79.4MB in the end (delta: -29.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-12 23:25:15,581 INFO L158 Benchmark]: Boogie Procedure Inliner took 127.20ms. Allocated memory is still 119.5MB. Free memory was 79.4MB in the beginning and 74.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:25:15,582 INFO L158 Benchmark]: Boogie Preprocessor took 110.61ms. Allocated memory is still 119.5MB. Free memory was 74.2MB in the beginning and 70.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:25:15,583 INFO L158 Benchmark]: RCFGBuilder took 1431.49ms. Allocated memory is still 119.5MB. Free memory was 70.0MB in the beginning and 78.2MB in the end (delta: -8.3MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2021-11-12 23:25:15,583 INFO L158 Benchmark]: TraceAbstraction took 8705.82ms. Allocated memory was 119.5MB in the beginning and 176.2MB in the end (delta: 56.6MB). Free memory was 77.6MB in the beginning and 81.9MB in the end (delta: -4.2MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. [2021-11-12 23:25:15,584 INFO L158 Benchmark]: Witness Printer took 185.04ms. Allocated memory is still 176.2MB. Free memory was 81.9MB in the beginning and 66.1MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-12 23:25:15,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 88.1MB. Free memory was 68.2MB in the beginning and 68.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 853.18ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 50.1MB in the beginning and 79.4MB in the end (delta: -29.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 127.20ms. Allocated memory is still 119.5MB. Free memory was 79.4MB in the beginning and 74.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 110.61ms. Allocated memory is still 119.5MB. Free memory was 74.2MB in the beginning and 70.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1431.49ms. Allocated memory is still 119.5MB. Free memory was 70.0MB in the beginning and 78.2MB in the end (delta: -8.3MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8705.82ms. Allocated memory was 119.5MB in the beginning and 176.2MB in the end (delta: 56.6MB). Free memory was 77.6MB in the beginning and 81.9MB in the end (delta: -4.2MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. * Witness Printer took 185.04ms. Allocated memory is still 176.2MB. Free memory was 81.9MB in the beginning and 66.1MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 572]: 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, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 771 SdHoareTripleChecker+Valid, 3928.50ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 771 mSDsluCounter, 800 SdHoareTripleChecker+Invalid, 3141.91ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 669 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2703 IncrementalHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 669 mSolverCounterUnsat, 739 mSDtfsCounter, 2703 mSolverCounterSat, 32.32ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 383 GetRequests, 368 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2163occurred in iteration=10, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 400 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 67 NumberOfFragments, 139 HoareAnnotationTreeSize, 3 FomulaSimplifications, 686 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 698 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1597 NumberOfCodeBlocks, 1597 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1762 ConstructedInterpolants, 0 QuantifiedInterpolants, 4392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1064/1122 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((a19 == 1 && a25 == 0) || ((a25 == 1 && a11 == 0) && a28 <= 10)) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || ((9 <= a28 && a25 == 1) && a28 <= 9)) || (a11 == 0 && a25 == 0)) || ((a25 == 1 && 8 <= a17) && a28 <= 10)) || (a25 == 1 && a19 == 1)) || (a28 <= 10 && a25 == 0) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((a19 == 1 && a25 == 0) || ((a25 == 1 && a11 == 0) && a28 <= 10)) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || ((9 <= a28 && a25 == 1) && a28 <= 9)) || (a11 == 0 && a25 == 0)) || ((a25 == 1 && 8 <= a17) && a28 <= 10)) || (a25 == 1 && a19 == 1)) || (a28 <= 10 && a25 == 0) RESULT: Ultimate proved your program to be correct! [2021-11-12 23:25:15,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf9fb58-a401-4dec-855a-54081224d371/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE