./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label24.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8 --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 e40e3ba5f6a83f4e5de959273fceaa01c26132d3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:57:48,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:57:48,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:57:48,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:57:48,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:57:48,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:57:48,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:57:48,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:57:48,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:57:48,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:57:48,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:57:48,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:57:48,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:57:48,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:57:48,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:57:48,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:57:48,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:57:48,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:57:48,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:57:48,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:57:48,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:57:48,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:57:48,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:57:48,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:57:48,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:57:48,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:57:48,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:57:48,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:57:48,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:57:48,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:57:48,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:57:48,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:57:48,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:57:48,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:57:48,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:57:48,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:57:48,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:57:48,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:57:48,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:57:48,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:57:48,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:57:48,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:57:48,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:57:48,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:57:48,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:57:48,227 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:57:48,227 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:57:48,228 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:57:48,228 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:57:48,228 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:57:48,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:57:48,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:57:48,235 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:57:48,236 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:57:48,236 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:57:48,236 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:57:48,236 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:57:48,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:57:48,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:57:48,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:57:48,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:57:48,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:57:48,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:57:48,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:57:48,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:57:48,239 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:57:48,239 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:57:48,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:57:48,239 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:57:48,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:57:48,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:57:48,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:57:48,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:57:48,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:57:48,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:57:48,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:57:48,243 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:57:48,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:57:48,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:57:48,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:57:48,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:57:48,244 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_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e40e3ba5f6a83f4e5de959273fceaa01c26132d3 [2021-10-13 06:57:48,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:57:48,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:57:48,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:57:48,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:57:48,520 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:57:48,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem02_label24.c [2021-10-13 06:57:48,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/data/5d553e2b6/4a9c4242400a490782130441931f259a/FLAG57804ec1f [2021-10-13 06:57:49,186 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:57:49,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/sv-benchmarks/c/eca-rers2012/Problem02_label24.c [2021-10-13 06:57:49,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/data/5d553e2b6/4a9c4242400a490782130441931f259a/FLAG57804ec1f [2021-10-13 06:57:49,442 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/data/5d553e2b6/4a9c4242400a490782130441931f259a [2021-10-13 06:57:49,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:57:49,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:57:49,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:57:49,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:57:49,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:57:49,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:57:49" (1/1) ... [2021-10-13 06:57:49,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285e7d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:49, skipping insertion in model container [2021-10-13 06:57:49,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:57:49" (1/1) ... [2021-10-13 06:57:49,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:57:49,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:57:49,905 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_bdd84e91-b74a-4259-8c03-0374c1e016d4/sv-benchmarks/c/eca-rers2012/Problem02_label24.c[18375,18388] [2021-10-13 06:57:49,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:57:49,946 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:57:50,110 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_bdd84e91-b74a-4259-8c03-0374c1e016d4/sv-benchmarks/c/eca-rers2012/Problem02_label24.c[18375,18388] [2021-10-13 06:57:50,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:57:50,146 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:57:50,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50 WrapperNode [2021-10-13 06:57:50,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:57:50,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:57:50,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:57:50,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:57:50,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (1/1) ... [2021-10-13 06:57:50,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (1/1) ... [2021-10-13 06:57:50,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:57:50,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:57:50,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:57:50,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:57:50,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (1/1) ... [2021-10-13 06:57:50,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (1/1) ... [2021-10-13 06:57:50,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (1/1) ... [2021-10-13 06:57:50,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (1/1) ... [2021-10-13 06:57:50,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (1/1) ... [2021-10-13 06:57:50,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (1/1) ... [2021-10-13 06:57:50,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (1/1) ... [2021-10-13 06:57:50,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:57:50,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:57:50,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:57:50,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:57:50,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (1/1) ... [2021-10-13 06:57:50,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:57:50,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:57:50,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:57:50,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:57:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:57:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:57:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:57:50,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:57:52,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:57:52,232 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 06:57:52,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:57:52 BoogieIcfgContainer [2021-10-13 06:57:52,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:57:52,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:57:52,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:57:52,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:57:52,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:57:49" (1/3) ... [2021-10-13 06:57:52,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7cc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:57:52, skipping insertion in model container [2021-10-13 06:57:52,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:50" (2/3) ... [2021-10-13 06:57:52,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7cc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:57:52, skipping insertion in model container [2021-10-13 06:57:52,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:57:52" (3/3) ... [2021-10-13 06:57:52,246 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label24.c [2021-10-13 06:57:52,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:57:52,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:57:52,317 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:57:52,327 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:57:52,328 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:57:52,347 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) [2021-10-13 06:57:52,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 06:57:52,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:52,358 INFO L512 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] [2021-10-13 06:57:52,358 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:52,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1814579991, now seen corresponding path program 1 times [2021-10-13 06:57:52,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:52,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592686171] [2021-10-13 06:57:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:52,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:57:52,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:52,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592686171] [2021-10-13 06:57:52,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592686171] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:52,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:52,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:57:52,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530370120] [2021-10-13 06:57:52,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:52,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:52,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:52,794 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) [2021-10-13 06:57:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:53,236 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-13 06:57:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:53,238 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 [2021-10-13 06:57:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:53,250 INFO L225 Difference]: With dead ends: 251 [2021-10-13 06:57:53,250 INFO L226 Difference]: Without dead ends: 163 [2021-10-13 06:57:53,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:53,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-13 06:57:53,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-13 06:57:53,301 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) [2021-10-13 06:57:53,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-10-13 06:57:53,305 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-10-13 06:57:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:53,306 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-10-13 06:57:53,306 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) [2021-10-13 06:57:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-10-13 06:57:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-13 06:57:53,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:53,311 INFO L512 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] [2021-10-13 06:57:53,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:57:53,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:53,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:53,313 INFO L82 PathProgramCache]: Analyzing trace with hash -329017879, now seen corresponding path program 1 times [2021-10-13 06:57:53,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:53,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216677771] [2021-10-13 06:57:53,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:53,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:57:53,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:53,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216677771] [2021-10-13 06:57:53,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216677771] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:53,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:53,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:57:53,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564383013] [2021-10-13 06:57:53,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:53,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:53,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:53,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:53,381 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) [2021-10-13 06:57:53,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:53,731 INFO L93 Difference]: Finished difference Result 487 states and 937 transitions. [2021-10-13 06:57:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:53,732 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 [2021-10-13 06:57:53,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:53,735 INFO L225 Difference]: With dead ends: 487 [2021-10-13 06:57:53,735 INFO L226 Difference]: Without dead ends: 325 [2021-10-13 06:57:53,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:53,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-13 06:57:53,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2021-10-13 06:57:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.84472049689441) internal successors, (594), 322 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 594 transitions. [2021-10-13 06:57:53,767 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 594 transitions. Word has length 91 [2021-10-13 06:57:53,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:53,767 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 594 transitions. [2021-10-13 06:57:53,767 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) [2021-10-13 06:57:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 594 transitions. [2021-10-13 06:57:53,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 06:57:53,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:53,773 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:53,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:57:53,774 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:53,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:53,775 INFO L82 PathProgramCache]: Analyzing trace with hash -87620780, now seen corresponding path program 1 times [2021-10-13 06:57:53,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:53,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545019069] [2021-10-13 06:57:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:53,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 06:57:53,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:53,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545019069] [2021-10-13 06:57:53,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545019069] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:53,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:53,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:57:53,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954101964] [2021-10-13 06:57:53,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:53,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:53,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:53,836 INFO L87 Difference]: Start difference. First operand 323 states and 594 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:54,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:54,227 INFO L93 Difference]: Finished difference Result 885 states and 1638 transitions. [2021-10-13 06:57:54,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:54,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 95 [2021-10-13 06:57:54,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:54,231 INFO L225 Difference]: With dead ends: 885 [2021-10-13 06:57:54,232 INFO L226 Difference]: Without dead ends: 563 [2021-10-13 06:57:54,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-13 06:57:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-10-13 06:57:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.616182572614108) internal successors, (779), 482 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 779 transitions. [2021-10-13 06:57:54,273 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 779 transitions. Word has length 95 [2021-10-13 06:57:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:54,273 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 779 transitions. [2021-10-13 06:57:54,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 779 transitions. [2021-10-13 06:57:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 06:57:54,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:54,281 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:54,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 06:57:54,282 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:54,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:54,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1540150481, now seen corresponding path program 1 times [2021-10-13 06:57:54,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:54,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357610051] [2021-10-13 06:57:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:54,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 06:57:54,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:54,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357610051] [2021-10-13 06:57:54,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357610051] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:54,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:54,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:54,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327192475] [2021-10-13 06:57:54,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:54,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:54,378 INFO L87 Difference]: Start difference. First operand 483 states and 779 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:54,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:54,732 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2021-10-13 06:57:54,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:54,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 100 [2021-10-13 06:57:54,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:54,738 INFO L225 Difference]: With dead ends: 1205 [2021-10-13 06:57:54,738 INFO L226 Difference]: Without dead ends: 723 [2021-10-13 06:57:54,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-13 06:57:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2021-10-13 06:57:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.5093457943925233) internal successors, (969), 642 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 969 transitions. [2021-10-13 06:57:54,771 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 969 transitions. Word has length 100 [2021-10-13 06:57:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:54,772 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 969 transitions. [2021-10-13 06:57:54,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 969 transitions. [2021-10-13 06:57:54,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-13 06:57:54,780 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:54,780 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:54,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 06:57:54,781 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:54,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:54,781 INFO L82 PathProgramCache]: Analyzing trace with hash -163973979, now seen corresponding path program 1 times [2021-10-13 06:57:54,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:54,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889571857] [2021-10-13 06:57:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:54,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 06:57:54,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:54,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889571857] [2021-10-13 06:57:54,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889571857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:54,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:54,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:57:54,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900135879] [2021-10-13 06:57:54,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:54,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:54,824 INFO L87 Difference]: Start difference. First operand 643 states and 969 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) [2021-10-13 06:57:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:55,180 INFO L93 Difference]: Finished difference Result 1765 states and 2719 transitions. [2021-10-13 06:57:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:55,180 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 101 [2021-10-13 06:57:55,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:55,187 INFO L225 Difference]: With dead ends: 1765 [2021-10-13 06:57:55,187 INFO L226 Difference]: Without dead ends: 1123 [2021-10-13 06:57:55,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:55,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-13 06:57:55,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-10-13 06:57:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.4536541889483066) internal successors, (1631), 1122 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1631 transitions. [2021-10-13 06:57:55,228 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1631 transitions. Word has length 101 [2021-10-13 06:57:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:55,230 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1631 transitions. [2021-10-13 06:57:55,230 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) [2021-10-13 06:57:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1631 transitions. [2021-10-13 06:57:55,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 06:57:55,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:55,234 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:55,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 06:57:55,235 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash -742241849, now seen corresponding path program 1 times [2021-10-13 06:57:55,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:55,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033346695] [2021-10-13 06:57:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:55,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 06:57:55,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:55,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033346695] [2021-10-13 06:57:55,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033346695] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:55,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:55,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:55,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244942659] [2021-10-13 06:57:55,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:55,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:55,326 INFO L87 Difference]: Start difference. First operand 1123 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:55,688 INFO L93 Difference]: Finished difference Result 2645 states and 3802 transitions. [2021-10-13 06:57:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:55,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 104 [2021-10-13 06:57:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:55,697 INFO L225 Difference]: With dead ends: 2645 [2021-10-13 06:57:55,697 INFO L226 Difference]: Without dead ends: 1523 [2021-10-13 06:57:55,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-10-13 06:57:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1443. [2021-10-13 06:57:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3703190013869626) internal successors, (1976), 1442 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1976 transitions. [2021-10-13 06:57:55,740 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1976 transitions. Word has length 104 [2021-10-13 06:57:55,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:55,740 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1976 transitions. [2021-10-13 06:57:55,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1976 transitions. [2021-10-13 06:57:55,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-13 06:57:55,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:55,744 INFO L512 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] [2021-10-13 06:57:55,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 06:57:55,745 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:55,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:55,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1486178021, now seen corresponding path program 1 times [2021-10-13 06:57:55,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:55,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506543840] [2021-10-13 06:57:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:55,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 06:57:55,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:55,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506543840] [2021-10-13 06:57:55,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506543840] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:55,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:55,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:55,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256292171] [2021-10-13 06:57:55,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:55,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:55,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:55,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:55,801 INFO L87 Difference]: Start difference. First operand 1443 states and 1976 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) [2021-10-13 06:57:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:56,109 INFO L93 Difference]: Finished difference Result 2885 states and 3951 transitions. [2021-10-13 06:57:56,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:56,109 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 [2021-10-13 06:57:56,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:56,117 INFO L225 Difference]: With dead ends: 2885 [2021-10-13 06:57:56,117 INFO L226 Difference]: Without dead ends: 1443 [2021-10-13 06:57:56,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-13 06:57:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-10-13 06:57:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3044382801664356) internal successors, (1881), 1442 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1881 transitions. [2021-10-13 06:57:56,158 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1881 transitions. Word has length 135 [2021-10-13 06:57:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:56,159 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1881 transitions. [2021-10-13 06:57:56,159 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) [2021-10-13 06:57:56,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1881 transitions. [2021-10-13 06:57:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-13 06:57:56,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:56,163 INFO L512 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] [2021-10-13 06:57:56,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 06:57:56,163 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash 497086565, now seen corresponding path program 1 times [2021-10-13 06:57:56,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:56,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361401037] [2021-10-13 06:57:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:56,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 06:57:56,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:56,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361401037] [2021-10-13 06:57:56,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361401037] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:56,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:56,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:56,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126095813] [2021-10-13 06:57:56,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:56,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:56,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:56,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:56,233 INFO L87 Difference]: Start difference. First operand 1443 states and 1881 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) [2021-10-13 06:57:56,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:56,564 INFO L93 Difference]: Finished difference Result 3205 states and 4261 transitions. [2021-10-13 06:57:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:56,565 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 [2021-10-13 06:57:56,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:56,575 INFO L225 Difference]: With dead ends: 3205 [2021-10-13 06:57:56,575 INFO L226 Difference]: Without dead ends: 1763 [2021-10-13 06:57:56,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-10-13 06:57:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1683. [2021-10-13 06:57:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.2841854934601664) internal successors, (2160), 1682 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2160 transitions. [2021-10-13 06:57:56,622 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2160 transitions. Word has length 139 [2021-10-13 06:57:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:56,624 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2160 transitions. [2021-10-13 06:57:56,625 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) [2021-10-13 06:57:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2160 transitions. [2021-10-13 06:57:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-13 06:57:56,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:56,632 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:56,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 06:57:56,632 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:56,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:56,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1123873355, now seen corresponding path program 1 times [2021-10-13 06:57:56,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:56,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743150002] [2021-10-13 06:57:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:56,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 06:57:56,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:56,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743150002] [2021-10-13 06:57:56,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743150002] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:56,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:56,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:56,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891334313] [2021-10-13 06:57:56,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:56,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:56,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:56,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:56,732 INFO L87 Difference]: Start difference. First operand 1683 states and 2160 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:57,074 INFO L93 Difference]: Finished difference Result 3845 states and 5034 transitions. [2021-10-13 06:57:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:57,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 166 [2021-10-13 06:57:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:57,093 INFO L225 Difference]: With dead ends: 3845 [2021-10-13 06:57:57,093 INFO L226 Difference]: Without dead ends: 2163 [2021-10-13 06:57:57,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-10-13 06:57:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2021-10-13 06:57:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2719703977798336) internal successors, (2750), 2162 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2750 transitions. [2021-10-13 06:57:57,157 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2750 transitions. Word has length 166 [2021-10-13 06:57:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:57,158 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 2750 transitions. [2021-10-13 06:57:57,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2750 transitions. [2021-10-13 06:57:57,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-10-13 06:57:57,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:57,164 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:57,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 06:57:57,164 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:57,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1505145455, now seen corresponding path program 1 times [2021-10-13 06:57:57,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:57,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673832092] [2021-10-13 06:57:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:57,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-13 06:57:57,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:57,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673832092] [2021-10-13 06:57:57,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673832092] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:57,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:57,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:57:57,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491841346] [2021-10-13 06:57:57,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:57,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:57,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:57,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:57,238 INFO L87 Difference]: Start difference. First operand 2163 states and 2750 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 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) [2021-10-13 06:57:57,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:57,435 INFO L93 Difference]: Finished difference Result 3763 states and 4780 transitions. [2021-10-13 06:57:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:57,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 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 172 [2021-10-13 06:57:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:57,436 INFO L225 Difference]: With dead ends: 3763 [2021-10-13 06:57:57,436 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:57:57,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:57,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:57:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:57:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:57:57,441 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2021-10-13 06:57:57,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:57,442 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:57:57,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 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) [2021-10-13 06:57:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:57:57,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:57:57,445 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:57:57,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 06:57:57,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:57:57,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:57:57,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:57:57,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:57:57,627 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-13 06:57:57,628 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-13 06:57:57,628 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-13 06:57:57,628 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-13 06:57:57,628 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-13 06:57:57,628 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-13 06:57:57,628 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-13 06:57:57,628 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-13 06:57:57,629 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-13 06:57:57,629 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-13 06:57:57,629 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-13 06:57:57,629 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-13 06:57:57,629 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-13 06:57:57,629 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-13 06:57:57,629 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-13 06:57:57,630 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-13 06:57:57,630 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-13 06:57:57,630 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-13 06:57:57,630 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-13 06:57:57,630 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-13 06:57:57,630 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-13 06:57:57,630 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-13 06:57:57,631 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-13 06:57:57,631 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-13 06:57:57,631 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-13 06:57:57,631 INFO L857 garLoopResultBuilder]: For program point L520-1(lines 39 608) no Hoare annotation was computed. [2021-10-13 06:57:57,631 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-13 06:57:57,631 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:57:57,631 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-13 06:57:57,632 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-13 06:57:57,632 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-13 06:57:57,632 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-13 06:57:57,632 INFO L857 garLoopResultBuilder]: For program point L523-1(lines 39 608) no Hoare annotation was computed. [2021-10-13 06:57:57,632 INFO L857 garLoopResultBuilder]: For program point L524(line 524) no Hoare annotation was computed. [2021-10-13 06:57:57,632 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-13 06:57:57,632 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-13 06:57:57,632 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-13 06:57:57,633 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-13 06:57:57,633 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-13 06:57:57,633 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 524) no Hoare annotation was computed. [2021-10-13 06:57:57,633 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-13 06:57:57,633 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-13 06:57:57,633 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-13 06:57:57,633 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-13 06:57:57,634 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-13 06:57:57,634 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-13 06:57:57,634 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-13 06:57:57,634 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-13 06:57:57,634 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-13 06:57:57,634 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-13 06:57:57,634 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-13 06:57:57,634 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-13 06:57:57,635 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-13 06:57:57,635 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-13 06:57:57,635 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-13 06:57:57,635 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-13 06:57:57,635 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= 8 ~a17~0)) (.cse4 (<= ~a28~0 10)) (.cse0 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 10 ~a28~0) .cse2 .cse4) (and .cse0 .cse2 .cse4) (and .cse1 .cse2 .cse4) (and .cse0 (= ~a11~0 0) .cse2 .cse3))) [2021-10-13 06:57:57,636 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-13 06:57:57,636 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-13 06:57:57,636 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-13 06:57:57,636 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-13 06:57:57,636 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-13 06:57:57,636 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-13 06:57:57,636 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-13 06:57:57,637 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-13 06:57:57,637 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:57:57,637 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-13 06:57:57,637 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-13 06:57:57,637 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= 8 ~a17~0)) (.cse4 (<= ~a28~0 10)) (.cse0 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 10 ~a28~0) .cse2 .cse4) (and .cse0 .cse2 .cse4) (and .cse1 .cse2 .cse4) (and .cse0 (= ~a11~0 0) .cse2 .cse3))) [2021-10-13 06:57:57,637 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-13 06:57:57,637 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-13 06:57:57,638 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-13 06:57:57,638 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-13 06:57:57,638 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-13 06:57:57,638 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-13 06:57:57,638 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-13 06:57:57,638 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-13 06:57:57,638 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-13 06:57:57,639 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-13 06:57:57,639 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-13 06:57:57,639 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-13 06:57:57,639 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-13 06:57:57,639 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-13 06:57:57,639 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-13 06:57:57,639 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-13 06:57:57,645 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:57:57,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:57:57 BoogieIcfgContainer [2021-10-13 06:57:57,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:57:57,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:57:57,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:57:57,662 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:57:57,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:57:52" (3/4) ... [2021-10-13 06:57:57,665 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:57:57,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 115 nodes and edges [2021-10-13 06:57:57,688 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-13 06:57:57,690 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 06:57:57,691 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 06:57:57,845 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:57:57,845 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:57:57,847 INFO L168 Benchmark]: Toolchain (without parser) took 8400.17 ms. Allocated memory was 132.1 MB in the beginning and 226.5 MB in the end (delta: 94.4 MB). Free memory was 95.9 MB in the beginning and 145.8 MB in the end (delta: -49.9 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:57,847 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 86.0 MB. Free memory was 56.5 MB in the beginning and 56.5 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:57:57,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.58 ms. Allocated memory is still 132.1 MB. Free memory was 95.9 MB in the beginning and 91.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:57,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.67 ms. Allocated memory is still 132.1 MB. Free memory was 91.8 MB in the beginning and 86.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:57,849 INFO L168 Benchmark]: Boogie Preprocessor took 89.80 ms. Allocated memory is still 132.1 MB. Free memory was 86.3 MB in the beginning and 82.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:57,849 INFO L168 Benchmark]: RCFGBuilder took 1884.16 ms. Allocated memory is still 132.1 MB. Free memory was 82.1 MB in the beginning and 79.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 56.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:57,850 INFO L168 Benchmark]: TraceAbstraction took 5422.17 ms. Allocated memory was 132.1 MB in the beginning and 226.5 MB in the end (delta: 94.4 MB). Free memory was 78.7 MB in the beginning and 160.5 MB in the end (delta: -81.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:57,850 INFO L168 Benchmark]: Witness Printer took 183.72 ms. Allocated memory is still 226.5 MB. Free memory was 160.5 MB in the beginning and 145.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:57,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 86.0 MB. Free memory was 56.5 MB in the beginning and 56.5 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 700.58 ms. Allocated memory is still 132.1 MB. Free memory was 95.9 MB in the beginning and 91.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 111.67 ms. Allocated memory is still 132.1 MB. Free memory was 91.8 MB in the beginning and 86.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.80 ms. Allocated memory is still 132.1 MB. Free memory was 86.3 MB in the beginning and 82.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1884.16 ms. Allocated memory is still 132.1 MB. Free memory was 82.1 MB in the beginning and 79.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 56.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5422.17 ms. Allocated memory was 132.1 MB in the beginning and 226.5 MB in the end (delta: 94.4 MB). Free memory was 78.7 MB in the beginning and 160.5 MB in the end (delta: -81.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Witness Printer took 183.72 ms. Allocated memory is still 226.5 MB. Free memory was 160.5 MB in the beginning and 145.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 524]: 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: 5328.7ms, OverallIterations: 10, TraceHistogramMax: 5, EmptinessCheckTime: 60.2ms, AutomataDifference: 3570.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 181.2ms, InitialAbstractionConstructionTime: 15.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 716 SDtfs, 803 SDslu, 45 SDs, 0 SdLazy, 2284 SolverSat, 607 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2429.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2163occurred in iteration=9, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 359.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 322 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 115 HoareAnnotationTreeSize, 3 FomulaSimplifications, 698 FormulaSimplificationTreeSizeReduction, 37.4ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 136.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 90.1ms SsaConstructionTime, 207.5ms SatisfiabilityAnalysisTime, 619.9ms InterpolantComputationTime, 1183 NumberOfCodeBlocks, 1183 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1173 ConstructedInterpolants, 0 QuantifiedInterpolants, 1699 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 571/571 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: ((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-13 06:57:57,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd84e91-b74a-4259-8c03-0374c1e016d4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...