./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i --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_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/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_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/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_6478a583-325e-47f7-93c6-1bba0062e447/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 46e60384d076cd36e28bd9e22b5f4fd53aad4615 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:56:05,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:56:05,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:56:05,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:56:05,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:56:05,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:56:05,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:56:05,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:56:05,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:56:05,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:56:05,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:56:05,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:56:05,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:56:05,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:56:05,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:56:05,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:56:05,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:56:05,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:56:05,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:56:05,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:56:05,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:56:05,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:56:05,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:56:05,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:56:05,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:56:05,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:56:05,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:56:05,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:56:05,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:56:05,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:56:05,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:56:05,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:56:05,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:56:05,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:56:05,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:56:05,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:56:05,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:56:05,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:56:05,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:56:05,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:56:05,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:56:05,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:56:05,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:56:05,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:56:05,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:56:05,290 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:56:05,290 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:56:05,290 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:56:05,290 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:56:05,290 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:56:05,291 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:56:05,291 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:56:05,291 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:56:05,291 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:56:05,292 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:56:05,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:56:05,292 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:56:05,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:56:05,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:56:05,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:56:05,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:56:05,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:56:05,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:56:05,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:56:05,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:56:05,295 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:56:05,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:56:05,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:56:05,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:56:05,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:56:05,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:56:05,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:56:05,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:56:05,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:56:05,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:56:05,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:56:05,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:56:05,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:56:05,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:56:05,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:56:05,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:56:05,302 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_6478a583-325e-47f7-93c6-1bba0062e447/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46e60384d076cd36e28bd9e22b5f4fd53aad4615 [2021-10-13 06:56:05,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:56:05,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:56:05,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:56:05,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:56:05,609 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:56:05,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i [2021-10-13 06:56:05,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/data/fe2fb3434/7aac0fcf0f004721981a7fdd098890b0/FLAG616ef82f6 [2021-10-13 06:56:06,189 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:56:06,190 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i [2021-10-13 06:56:06,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/data/fe2fb3434/7aac0fcf0f004721981a7fdd098890b0/FLAG616ef82f6 [2021-10-13 06:56:06,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/data/fe2fb3434/7aac0fcf0f004721981a7fdd098890b0 [2021-10-13 06:56:06,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:56:06,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:56:06,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:56:06,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:56:06,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:56:06,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:56:06" (1/1) ... [2021-10-13 06:56:06,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294515ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:06, skipping insertion in model container [2021-10-13 06:56:06,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:56:06" (1/1) ... [2021-10-13 06:56:06,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:56:06,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:56:06,754 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_6478a583-325e-47f7-93c6-1bba0062e447/sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i[950,963] [2021-10-13 06:56:06,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:56:06,924 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:56:06,935 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_6478a583-325e-47f7-93c6-1bba0062e447/sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i[950,963] [2021-10-13 06:56:06,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:56:07,006 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:56:07,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07 WrapperNode [2021-10-13 06:56:07,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:56:07,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:56:07,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:56:07,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:56:07,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (1/1) ... [2021-10-13 06:56:07,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (1/1) ... [2021-10-13 06:56:07,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:56:07,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:56:07,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:56:07,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:56:07,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (1/1) ... [2021-10-13 06:56:07,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (1/1) ... [2021-10-13 06:56:07,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (1/1) ... [2021-10-13 06:56:07,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (1/1) ... [2021-10-13 06:56:07,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (1/1) ... [2021-10-13 06:56:07,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (1/1) ... [2021-10-13 06:56:07,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (1/1) ... [2021-10-13 06:56:07,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:56:07,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:56:07,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:56:07,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:56:07,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (1/1) ... [2021-10-13 06:56:07,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:56:07,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:56:07,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:56:07,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:56:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 06:56:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 06:56:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:56:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:56:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 06:56:07,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 06:56:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 06:56:07,162 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 06:56:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 06:56:07,162 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 06:56:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:56:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 06:56:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:56:07,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:56:07,164 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 06:56:07,541 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:56:07,541 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 06:56:07,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:56:07 BoogieIcfgContainer [2021-10-13 06:56:07,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:56:07,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:56:07,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:56:07,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:56:07,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:56:06" (1/3) ... [2021-10-13 06:56:07,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c5e86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:56:07, skipping insertion in model container [2021-10-13 06:56:07,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:07" (2/3) ... [2021-10-13 06:56:07,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c5e86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:56:07, skipping insertion in model container [2021-10-13 06:56:07,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:56:07" (3/3) ... [2021-10-13 06:56:07,559 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2021-10-13 06:56:07,570 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 06:56:07,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:56:07,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:56:07,570 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 06:56:07,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,613 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,613 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,614 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,614 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,618 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,618 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,618 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,620 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,620 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,621 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,621 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,631 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,632 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,632 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,639 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,639 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,639 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,639 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,650 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,651 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:56:07,656 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 06:56:07,710 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:56:07,716 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 06:56:07,716 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 06:56:07,730 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 06:56:07,741 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-13 06:56:07,744 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-13 06:56:07,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-10-13 06:56:07,808 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-13 06:56:07,808 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 06:56:07,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-13 06:56:07,819 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-13 06:56:10,863 INFO L131 LiptonReduction]: Checked pairs total: 2757 [2021-10-13 06:56:10,864 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-13 06:56:10,873 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-10-13 06:56:10,904 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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 06:56:10,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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 06:56:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:56:10,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:10,915 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:10,916 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:10,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:10,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1301167225, now seen corresponding path program 1 times [2021-10-13 06:56:10,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:10,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447700451] [2021-10-13 06:56:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:10,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:11,202 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 06:56:11,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:11,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447700451] [2021-10-13 06:56:11,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447700451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:11,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:11,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 06:56:11,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624484308] [2021-10-13 06:56:11,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:56:11,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:11,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:56:11,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:56:11,230 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:11,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:11,281 INFO L93 Difference]: Finished difference Result 347 states and 908 transitions. [2021-10-13 06:56:11,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:56:11,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 06:56:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:11,299 INFO L225 Difference]: With dead ends: 347 [2021-10-13 06:56:11,299 INFO L226 Difference]: Without dead ends: 315 [2021-10-13 06:56:11,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:56:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-10-13 06:56:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 280. [2021-10-13 06:56:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.6487455197132617) internal successors, (739), 279 states have internal predecessors, (739), 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 06:56:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 739 transitions. [2021-10-13 06:56:11,371 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 739 transitions. Word has length 8 [2021-10-13 06:56:11,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:11,372 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 739 transitions. [2021-10-13 06:56:11,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:11,372 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 739 transitions. [2021-10-13 06:56:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 06:56:11,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:11,374 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:11,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:56:11,374 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:11,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:11,375 INFO L82 PathProgramCache]: Analyzing trace with hash -2057201507, now seen corresponding path program 1 times [2021-10-13 06:56:11,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:11,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120114297] [2021-10-13 06:56:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:11,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:11,556 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 06:56:11,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:11,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120114297] [2021-10-13 06:56:11,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120114297] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:11,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:11,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:56:11,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790873829] [2021-10-13 06:56:11,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:56:11,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:56:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:11,562 INFO L87 Difference]: Start difference. First operand 280 states and 739 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:11,595 INFO L93 Difference]: Finished difference Result 293 states and 749 transitions. [2021-10-13 06:56:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:56:11,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 06:56:11,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:11,599 INFO L225 Difference]: With dead ends: 293 [2021-10-13 06:56:11,599 INFO L226 Difference]: Without dead ends: 293 [2021-10-13 06:56:11,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:11,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-10-13 06:56:11,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2021-10-13 06:56:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.62109375) internal successors, (671), 256 states have internal predecessors, (671), 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 06:56:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 671 transitions. [2021-10-13 06:56:11,623 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 671 transitions. Word has length 9 [2021-10-13 06:56:11,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:11,623 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 671 transitions. [2021-10-13 06:56:11,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:11,624 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 671 transitions. [2021-10-13 06:56:11,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 06:56:11,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:11,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:11,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:56:11,626 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:11,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:11,627 INFO L82 PathProgramCache]: Analyzing trace with hash -826648700, now seen corresponding path program 1 times [2021-10-13 06:56:11,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:11,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334305735] [2021-10-13 06:56:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:11,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:11,745 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 06:56:11,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:11,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334305735] [2021-10-13 06:56:11,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334305735] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:11,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:11,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:56:11,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972141217] [2021-10-13 06:56:11,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:56:11,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:11,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:56:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:11,754 INFO L87 Difference]: Start difference. First operand 257 states and 671 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:11,787 INFO L93 Difference]: Finished difference Result 278 states and 706 transitions. [2021-10-13 06:56:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:56:11,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 06:56:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:11,792 INFO L225 Difference]: With dead ends: 278 [2021-10-13 06:56:11,792 INFO L226 Difference]: Without dead ends: 278 [2021-10-13 06:56:11,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-13 06:56:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 226. [2021-10-13 06:56:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.608888888888889) internal successors, (587), 225 states have internal predecessors, (587), 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 06:56:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 587 transitions. [2021-10-13 06:56:11,826 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 587 transitions. Word has length 10 [2021-10-13 06:56:11,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:11,827 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 587 transitions. [2021-10-13 06:56:11,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:11,827 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 587 transitions. [2021-10-13 06:56:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 06:56:11,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:11,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:11,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 06:56:11,835 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:11,836 INFO L82 PathProgramCache]: Analyzing trace with hash -763710268, now seen corresponding path program 1 times [2021-10-13 06:56:11,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:11,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322436533] [2021-10-13 06:56:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:11,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:11,973 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 06:56:11,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:11,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322436533] [2021-10-13 06:56:11,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322436533] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:11,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:11,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:56:11,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730403964] [2021-10-13 06:56:11,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:56:11,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:56:11,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:11,976 INFO L87 Difference]: Start difference. First operand 226 states and 587 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:12,004 INFO L93 Difference]: Finished difference Result 258 states and 648 transitions. [2021-10-13 06:56:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:56:12,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 06:56:12,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:12,011 INFO L225 Difference]: With dead ends: 258 [2021-10-13 06:56:12,011 INFO L226 Difference]: Without dead ends: 258 [2021-10-13 06:56:12,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:12,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-13 06:56:12,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 202. [2021-10-13 06:56:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.557213930348259) internal successors, (514), 201 states have internal predecessors, (514), 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 06:56:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 514 transitions. [2021-10-13 06:56:12,034 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 514 transitions. Word has length 10 [2021-10-13 06:56:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:12,035 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 514 transitions. [2021-10-13 06:56:12,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 514 transitions. [2021-10-13 06:56:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 06:56:12,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:12,036 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:12,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 06:56:12,037 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:12,037 INFO L82 PathProgramCache]: Analyzing trace with hash 143692478, now seen corresponding path program 1 times [2021-10-13 06:56:12,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:12,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307260260] [2021-10-13 06:56:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:12,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:12,145 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 06:56:12,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:12,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307260260] [2021-10-13 06:56:12,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307260260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:12,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:12,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:56:12,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401248295] [2021-10-13 06:56:12,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:56:12,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:12,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:56:12,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:12,148 INFO L87 Difference]: Start difference. First operand 202 states and 514 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:12,168 INFO L93 Difference]: Finished difference Result 254 states and 639 transitions. [2021-10-13 06:56:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:56:12,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 06:56:12,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:12,171 INFO L225 Difference]: With dead ends: 254 [2021-10-13 06:56:12,171 INFO L226 Difference]: Without dead ends: 254 [2021-10-13 06:56:12,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-13 06:56:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 200. [2021-10-13 06:56:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.5477386934673367) internal successors, (507), 199 states have internal predecessors, (507), 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 06:56:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 507 transitions. [2021-10-13 06:56:12,182 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 507 transitions. Word has length 11 [2021-10-13 06:56:12,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:12,182 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 507 transitions. [2021-10-13 06:56:12,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,183 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 507 transitions. [2021-10-13 06:56:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 06:56:12,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:12,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:12,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 06:56:12,184 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:12,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2051009510, now seen corresponding path program 1 times [2021-10-13 06:56:12,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:12,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285149812] [2021-10-13 06:56:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:12,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:12,298 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 06:56:12,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:12,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285149812] [2021-10-13 06:56:12,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285149812] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:12,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:12,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:56:12,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023380698] [2021-10-13 06:56:12,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:56:12,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:12,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:56:12,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:12,306 INFO L87 Difference]: Start difference. First operand 200 states and 507 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 06:56:12,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:12,344 INFO L93 Difference]: Finished difference Result 235 states and 547 transitions. [2021-10-13 06:56:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:56:12,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-10-13 06:56:12,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:12,346 INFO L225 Difference]: With dead ends: 235 [2021-10-13 06:56:12,346 INFO L226 Difference]: Without dead ends: 167 [2021-10-13 06:56:12,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:56:12,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-10-13 06:56:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-10-13 06:56:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.283132530120482) internal successors, (379), 166 states have internal predecessors, (379), 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 06:56:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 379 transitions. [2021-10-13 06:56:12,355 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 379 transitions. Word has length 12 [2021-10-13 06:56:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:12,356 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 379 transitions. [2021-10-13 06:56:12,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 06:56:12,356 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 379 transitions. [2021-10-13 06:56:12,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 06:56:12,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:12,357 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:12,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 06:56:12,358 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:12,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:12,358 INFO L82 PathProgramCache]: Analyzing trace with hash 753016455, now seen corresponding path program 1 times [2021-10-13 06:56:12,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:12,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295998702] [2021-10-13 06:56:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:12,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:12,422 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 06:56:12,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:12,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295998702] [2021-10-13 06:56:12,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295998702] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:12,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:12,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:56:12,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134365844] [2021-10-13 06:56:12,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:56:12,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:12,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:56:12,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:56:12,425 INFO L87 Difference]: Start difference. First operand 167 states and 379 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:12,458 INFO L93 Difference]: Finished difference Result 168 states and 357 transitions. [2021-10-13 06:56:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:56:12,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 06:56:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:12,460 INFO L225 Difference]: With dead ends: 168 [2021-10-13 06:56:12,460 INFO L226 Difference]: Without dead ends: 126 [2021-10-13 06:56:12,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:56:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-13 06:56:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-13 06:56:12,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.096) internal successors, (262), 125 states have internal predecessors, (262), 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 06:56:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 262 transitions. [2021-10-13 06:56:12,466 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 262 transitions. Word has length 13 [2021-10-13 06:56:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:12,466 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 262 transitions. [2021-10-13 06:56:12,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 262 transitions. [2021-10-13 06:56:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 06:56:12,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:12,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:12,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 06:56:12,468 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:12,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:12,468 INFO L82 PathProgramCache]: Analyzing trace with hash 732351805, now seen corresponding path program 1 times [2021-10-13 06:56:12,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:12,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958641655] [2021-10-13 06:56:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:12,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:12,527 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 06:56:12,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:12,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958641655] [2021-10-13 06:56:12,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958641655] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:12,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:12,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:56:12,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499269244] [2021-10-13 06:56:12,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:56:12,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:12,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:56:12,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:56:12,529 INFO L87 Difference]: Start difference. First operand 126 states and 262 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:12,558 INFO L93 Difference]: Finished difference Result 193 states and 382 transitions. [2021-10-13 06:56:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:56:12,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 06:56:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:12,560 INFO L225 Difference]: With dead ends: 193 [2021-10-13 06:56:12,560 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 06:56:12,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:56:12,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 06:56:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 126. [2021-10-13 06:56:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.064) internal successors, (258), 125 states have internal predecessors, (258), 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 06:56:12,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 258 transitions. [2021-10-13 06:56:12,565 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 258 transitions. Word has length 14 [2021-10-13 06:56:12,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:12,565 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 258 transitions. [2021-10-13 06:56:12,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,566 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 258 transitions. [2021-10-13 06:56:12,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 06:56:12,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:12,567 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:12,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 06:56:12,567 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:12,568 INFO L82 PathProgramCache]: Analyzing trace with hash 62296389, now seen corresponding path program 2 times [2021-10-13 06:56:12,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:12,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605757338] [2021-10-13 06:56:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:12,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:12,627 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 06:56:12,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:12,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605757338] [2021-10-13 06:56:12,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605757338] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:12,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:12,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:56:12,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541554612] [2021-10-13 06:56:12,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:56:12,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:56:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:12,630 INFO L87 Difference]: Start difference. First operand 126 states and 258 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:12,657 INFO L93 Difference]: Finished difference Result 181 states and 358 transitions. [2021-10-13 06:56:12,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:56:12,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 06:56:12,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:12,659 INFO L225 Difference]: With dead ends: 181 [2021-10-13 06:56:12,659 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 06:56:12,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:56:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 06:56:12,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 120. [2021-10-13 06:56:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.0168067226890756) internal successors, (240), 119 states have internal predecessors, (240), 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 06:56:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 240 transitions. [2021-10-13 06:56:12,665 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 240 transitions. Word has length 14 [2021-10-13 06:56:12,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:12,665 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 240 transitions. [2021-10-13 06:56:12,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,666 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 240 transitions. [2021-10-13 06:56:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 06:56:12,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:12,667 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:12,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 06:56:12,667 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:12,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1609120527, now seen corresponding path program 1 times [2021-10-13 06:56:12,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:12,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319621541] [2021-10-13 06:56:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:12,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:12,753 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 06:56:12,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:12,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319621541] [2021-10-13 06:56:12,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319621541] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:12,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:12,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:56:12,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217193327] [2021-10-13 06:56:12,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:56:12,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:12,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:56:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:56:12,760 INFO L87 Difference]: Start difference. First operand 120 states and 240 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:12,803 INFO L93 Difference]: Finished difference Result 155 states and 300 transitions. [2021-10-13 06:56:12,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:56:12,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 06:56:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:12,805 INFO L225 Difference]: With dead ends: 155 [2021-10-13 06:56:12,805 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 06:56:12,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:56:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 06:56:12,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2021-10-13 06:56:12,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.9292035398230087) internal successors, (218), 113 states have internal predecessors, (218), 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 06:56:12,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 218 transitions. [2021-10-13 06:56:12,810 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 218 transitions. Word has length 15 [2021-10-13 06:56:12,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:12,811 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 218 transitions. [2021-10-13 06:56:12,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,811 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 218 transitions. [2021-10-13 06:56:12,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 06:56:12,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:12,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:12,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 06:56:12,813 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:12,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:12,813 INFO L82 PathProgramCache]: Analyzing trace with hash 492831695, now seen corresponding path program 2 times [2021-10-13 06:56:12,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:12,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054901587] [2021-10-13 06:56:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:12,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:12,909 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 06:56:12,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:12,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054901587] [2021-10-13 06:56:12,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054901587] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:12,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:12,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:56:12,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722023482] [2021-10-13 06:56:12,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:56:12,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:12,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:56:12,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:56:12,912 INFO L87 Difference]: Start difference. First operand 114 states and 218 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:12,937 INFO L93 Difference]: Finished difference Result 167 states and 309 transitions. [2021-10-13 06:56:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:56:12,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 06:56:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:12,939 INFO L225 Difference]: With dead ends: 167 [2021-10-13 06:56:12,939 INFO L226 Difference]: Without dead ends: 120 [2021-10-13 06:56:12,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:56:12,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-13 06:56:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 110. [2021-10-13 06:56:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.853211009174312) internal successors, (202), 109 states have internal predecessors, (202), 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 06:56:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 202 transitions. [2021-10-13 06:56:12,944 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 202 transitions. Word has length 15 [2021-10-13 06:56:12,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:12,944 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 202 transitions. [2021-10-13 06:56:12,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 202 transitions. [2021-10-13 06:56:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 06:56:12,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:12,946 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:12,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 06:56:12,946 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:12,947 INFO L82 PathProgramCache]: Analyzing trace with hash -94627425, now seen corresponding path program 3 times [2021-10-13 06:56:12,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:12,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478498358] [2021-10-13 06:56:12,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:12,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:13,047 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 06:56:13,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:13,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478498358] [2021-10-13 06:56:13,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478498358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:13,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:13,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:56:13,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173712196] [2021-10-13 06:56:13,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:56:13,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:56:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:56:13,050 INFO L87 Difference]: Start difference. First operand 110 states and 202 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:13,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:13,091 INFO L93 Difference]: Finished difference Result 106 states and 192 transitions. [2021-10-13 06:56:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 06:56:13,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 06:56:13,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:13,092 INFO L225 Difference]: With dead ends: 106 [2021-10-13 06:56:13,092 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 06:56:13,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:56:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 06:56:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-13 06:56:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-10-13 06:56:13,095 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 15 [2021-10-13 06:56:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:13,095 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-13 06:56:13,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2021-10-13 06:56:13,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 06:56:13,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:13,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:13,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 06:56:13,097 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 06:56:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:13,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1382968819, now seen corresponding path program 1 times [2021-10-13 06:56:13,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:13,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637990032] [2021-10-13 06:56:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:13,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:13,172 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 06:56:13,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:13,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637990032] [2021-10-13 06:56:13,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637990032] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:13,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:13,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:56:13,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401877895] [2021-10-13 06:56:13,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:56:13,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:56:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:56:13,175 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 06:56:13,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:13,186 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2021-10-13 06:56:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:56:13,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-10-13 06:56:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:13,188 INFO L225 Difference]: With dead ends: 29 [2021-10-13 06:56:13,188 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:56:13,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:56:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:56:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:56:13,189 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 06:56:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:56:13,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-13 06:56:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:13,189 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:56:13,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 06:56:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:56:13,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:56:13,192 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:56:13,193 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 06:56:13,193 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 06:56:13,193 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 06:56:13,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 06:56:13,198 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 06:56:13,198 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:56:13,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:56:13 BasicIcfg [2021-10-13 06:56:13,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:56:13,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:56:13,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:56:13,202 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:56:13,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:56:07" (3/4) ... [2021-10-13 06:56:13,206 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:56:13,212 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 06:56:13,212 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 06:56:13,213 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 06:56:13,222 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 06:56:13,222 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 06:56:13,222 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:56:13,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:56:13,269 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:56:13,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:56:13,271 INFO L168 Benchmark]: Toolchain (without parser) took 6762.92 ms. Allocated memory was 121.6 MB in the beginning and 151.0 MB in the end (delta: 29.4 MB). Free memory was 84.4 MB in the beginning and 89.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:56:13,271 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 56.2 MB in the beginning and 56.2 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:56:13,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.84 ms. Allocated memory is still 121.6 MB. Free memory was 84.1 MB in the beginning and 88.6 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:56:13,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.60 ms. Allocated memory is still 121.6 MB. Free memory was 88.6 MB in the beginning and 86.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:56:13,273 INFO L168 Benchmark]: Boogie Preprocessor took 24.04 ms. Allocated memory is still 121.6 MB. Free memory was 86.5 MB in the beginning and 84.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:56:13,273 INFO L168 Benchmark]: RCFGBuilder took 468.45 ms. Allocated memory is still 121.6 MB. Free memory was 84.8 MB in the beginning and 72.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:56:13,274 INFO L168 Benchmark]: TraceAbstraction took 5655.47 ms. Allocated memory was 121.6 MB in the beginning and 151.0 MB in the end (delta: 29.4 MB). Free memory was 72.3 MB in the beginning and 92.1 MB in the end (delta: -19.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:56:13,274 INFO L168 Benchmark]: Witness Printer took 67.59 ms. Allocated memory is still 151.0 MB. Free memory was 92.1 MB in the beginning and 89.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:56:13,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 56.2 MB in the beginning and 56.2 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 497.84 ms. Allocated memory is still 121.6 MB. Free memory was 84.1 MB in the beginning and 88.6 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.60 ms. Allocated memory is still 121.6 MB. Free memory was 88.6 MB in the beginning and 86.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.04 ms. Allocated memory is still 121.6 MB. Free memory was 86.5 MB in the beginning and 84.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 468.45 ms. Allocated memory is still 121.6 MB. Free memory was 84.8 MB in the beginning and 72.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5655.47 ms. Allocated memory was 121.6 MB in the beginning and 151.0 MB in the end (delta: 29.4 MB). Free memory was 72.3 MB in the beginning and 92.1 MB in the end (delta: -19.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Witness Printer took 67.59 ms. Allocated memory is still 151.0 MB. Free memory was 92.1 MB in the beginning and 89.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3119.6ms, 91 PlacesBefore, 31 PlacesAfterwards, 83 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2757 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1458, positive: 1362, positive conditional: 0, positive unconditional: 1362, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 981, positive: 934, positive conditional: 0, positive unconditional: 934, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 981, positive: 920, positive conditional: 0, positive unconditional: 920, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 61, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 167, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 122, negative conditional: 0, negative unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1458, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 981, unknown conditional: 0, unknown unconditional: 981] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - 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: 18]: 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 with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5489.4ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 26.4ms, AutomataDifference: 509.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3188.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 271 SDtfs, 264 SDslu, 356 SDs, 0 SdLazy, 189 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 207.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 182.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=280occurred in iteration=1, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 179.6ms AutomataMinimizationTime, 13 MinimizatonAttempts, 310 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.9ms SsaConstructionTime, 329.7ms SatisfiabilityAnalysisTime, 933.6ms InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! [2021-10-13 06:56:13,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6478a583-325e-47f7-93c6-1bba0062e447/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...