./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:57:48,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:57:48,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:57:49,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:57:49,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:57:49,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:57:49,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:57:49,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:57:49,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:57:49,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:57:49,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:57:49,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:57:49,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:57:49,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:57:49,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:57:49,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:57:49,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:57:49,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:57:49,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:57:49,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:57:49,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:57:49,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:57:49,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:57:49,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:57:49,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:57:49,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:57:49,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:57:49,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:57:49,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:57:49,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:57:49,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:57:49,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:57:49,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:57:49,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:57:49,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:57:49,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:57:49,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:57:49,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:57:49,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:57:49,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:57:49,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:57:49,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:57:49,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:57:49,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:57:49,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:57:49,149 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:57:49,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:57:49,150 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:57:49,150 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:57:49,150 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:57:49,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:57:49,151 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:57:49,158 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:57:49,158 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:57:49,159 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:57:49,159 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:57:49,159 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:57:49,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:57:49,160 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:57:49,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:57:49,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:57:49,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:57:49,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:57:49,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:57:49,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:57:49,162 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:57:49,162 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:57:49,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:57:49,162 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:57:49,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:57:49,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:57:49,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:57:49,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:57:49,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:57:49,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:57:49,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:57:49,166 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:57:49,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:57:49,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:57:49,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:57:49,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:57:49,168 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_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c [2021-10-24 10:57:49,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:57:49,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:57:49,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:57:49,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:57:49,506 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:57:49,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-24 10:57:49,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/data/49e7ff92c/bf9554b3f176458396436507d244bb10/FLAG1a399b403 [2021-10-24 10:57:50,215 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:57:50,216 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-24 10:57:50,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/data/49e7ff92c/bf9554b3f176458396436507d244bb10/FLAG1a399b403 [2021-10-24 10:57:50,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/data/49e7ff92c/bf9554b3f176458396436507d244bb10 [2021-10-24 10:57:50,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:57:50,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:57:50,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:57:50,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:57:50,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:57:50,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:57:50" (1/1) ... [2021-10-24 10:57:50,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a267955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:50, skipping insertion in model container [2021-10-24 10:57:50,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:57:50" (1/1) ... [2021-10-24 10:57:50,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:57:50,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:57:50,866 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_a811a04d-be00-48f1-a786-0a174430b1c1/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-24 10:57:51,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:57:51,077 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:57:51,089 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_a811a04d-be00-48f1-a786-0a174430b1c1/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-24 10:57:51,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:57:51,161 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:57:51,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51 WrapperNode [2021-10-24 10:57:51,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:57:51,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:57:51,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:57:51,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:57:51,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (1/1) ... [2021-10-24 10:57:51,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (1/1) ... [2021-10-24 10:57:51,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:57:51,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:57:51,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:57:51,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:57:51,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (1/1) ... [2021-10-24 10:57:51,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (1/1) ... [2021-10-24 10:57:51,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (1/1) ... [2021-10-24 10:57:51,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (1/1) ... [2021-10-24 10:57:51,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (1/1) ... [2021-10-24 10:57:51,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (1/1) ... [2021-10-24 10:57:51,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (1/1) ... [2021-10-24 10:57:51,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:57:51,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:57:51,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:57:51,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:57:51,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (1/1) ... [2021-10-24 10:57:51,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:57:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:57:51,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:57:51,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:57:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:57:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-24 10:57:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:57:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:57:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-24 10:57:51,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-24 10:57:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-24 10:57:51,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-24 10:57:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-24 10:57:51,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-24 10:57:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:57:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-24 10:57:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:57:51,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:57:51,318 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 10:57:51,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:57:51,662 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-24 10:57:51,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:51 BoogieIcfgContainer [2021-10-24 10:57:51,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:57:51,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:57:51,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:57:51,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:57:51,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:57:50" (1/3) ... [2021-10-24 10:57:51,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee8261c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:57:51, skipping insertion in model container [2021-10-24 10:57:51,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:51" (2/3) ... [2021-10-24 10:57:51,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee8261c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:57:51, skipping insertion in model container [2021-10-24 10:57:51,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:51" (3/3) ... [2021-10-24 10:57:51,675 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-24 10:57:51,682 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 10:57:51,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:57:51,683 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:57:51,683 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 10:57:51,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,749 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,749 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,758 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,758 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,759 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,759 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,765 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,766 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,771 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,772 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,772 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,775 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,775 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:57:51,778 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-24 10:57:51,826 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:57:51,833 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:57:51,834 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 10:57:51,849 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 10:57:51,860 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-24 10:57:51,867 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-10-24 10:57:51,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-10-24 10:57:51,952 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-24 10:57:51,952 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-24 10:57:51,956 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 45 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-24 10:57:51,961 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2021-10-24 10:57:54,822 INFO L131 LiptonReduction]: Checked pairs total: 2375 [2021-10-24 10:57:54,823 INFO L133 LiptonReduction]: Total number of compositions: 71 [2021-10-24 10:57:54,830 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-10-24 10:57:54,861 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:54,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:57:54,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:54,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:54,872 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:57:54,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:54,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1910294854, now seen corresponding path program 1 times [2021-10-24 10:57:54,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:57:54,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948826777] [2021-10-24 10:57:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:54,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:57:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:55,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:57:55,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948826777] [2021-10-24 10:57:55,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948826777] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:55,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:55,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:57:55,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101386978] [2021-10-24 10:57:55,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:57:55,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:57:55,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:57:55,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:57:55,145 INFO L87 Difference]: Start difference. First operand has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:55,190 INFO L93 Difference]: Finished difference Result 226 states and 634 transitions. [2021-10-24 10:57:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:57:55,192 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:57:55,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:55,208 INFO L225 Difference]: With dead ends: 226 [2021-10-24 10:57:55,208 INFO L226 Difference]: Without dead ends: 226 [2021-10-24 10:57:55,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:57:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-24 10:57:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-10-24 10:57:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.8177777777777777) internal successors, (634), 225 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2021-10-24 10:57:55,267 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2021-10-24 10:57:55,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:55,268 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2021-10-24 10:57:55,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:55,269 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2021-10-24 10:57:55,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:57:55,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:55,270 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:55,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:57:55,271 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:57:55,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:55,272 INFO L82 PathProgramCache]: Analyzing trace with hash 910397715, now seen corresponding path program 1 times [2021-10-24 10:57:55,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:57:55,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120493439] [2021-10-24 10:57:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:55,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:57:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:55,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:57:55,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120493439] [2021-10-24 10:57:55,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120493439] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:55,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:55,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:57:55,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067347498] [2021-10-24 10:57:55,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:57:55,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:57:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:57:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:57:55,427 INFO L87 Difference]: Start difference. First operand 226 states and 634 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) [2021-10-24 10:57:55,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:55,451 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2021-10-24 10:57:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:57:55,452 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 [2021-10-24 10:57:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:55,455 INFO L225 Difference]: With dead ends: 250 [2021-10-24 10:57:55,455 INFO L226 Difference]: Without dead ends: 202 [2021-10-24 10:57:55,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:57:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-24 10:57:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-10-24 10:57:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.746268656716418) internal successors, (552), 201 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:55,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2021-10-24 10:57:55,475 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2021-10-24 10:57:55,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:55,475 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2021-10-24 10:57:55,475 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) [2021-10-24 10:57:55,476 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2021-10-24 10:57:55,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:57:55,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:55,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:55,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:57:55,478 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:57:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:55,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1842467004, now seen corresponding path program 1 times [2021-10-24 10:57:55,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:57:55,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961763698] [2021-10-24 10:57:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:55,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:57:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:55,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:57:55,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961763698] [2021-10-24 10:57:55,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961763698] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:55,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:55,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:57:55,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444813612] [2021-10-24 10:57:55,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:57:55,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:57:55,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:57:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:57:55,578 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand has 5 states, 4 states have (on average 2.5) 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) [2021-10-24 10:57:55,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:55,647 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2021-10-24 10:57:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:57:55,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) 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 [2021-10-24 10:57:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:55,650 INFO L225 Difference]: With dead ends: 262 [2021-10-24 10:57:55,652 INFO L226 Difference]: Without dead ends: 154 [2021-10-24 10:57:55,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:57:55,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-24 10:57:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-24 10:57:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.5620915032679736) internal successors, (392), 153 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2021-10-24 10:57:55,664 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2021-10-24 10:57:55,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:55,665 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2021-10-24 10:57:55,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) 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) [2021-10-24 10:57:55,665 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2021-10-24 10:57:55,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:57:55,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:55,667 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:55,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:57:55,667 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:57:55,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:55,668 INFO L82 PathProgramCache]: Analyzing trace with hash -75373822, now seen corresponding path program 1 times [2021-10-24 10:57:55,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:57:55,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804835501] [2021-10-24 10:57:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:55,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:57:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:55,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:57:55,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804835501] [2021-10-24 10:57:55,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804835501] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:55,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:55,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:57:55,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316533314] [2021-10-24 10:57:55,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:57:55,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:57:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:57:55,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:57:55,789 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand has 4 states, 4 states have (on average 2.75) 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) [2021-10-24 10:57:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:55,819 INFO L93 Difference]: Finished difference Result 166 states and 382 transitions. [2021-10-24 10:57:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:57:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) 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 [2021-10-24 10:57:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:55,822 INFO L225 Difference]: With dead ends: 166 [2021-10-24 10:57:55,822 INFO L226 Difference]: Without dead ends: 130 [2021-10-24 10:57:55,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:57:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-24 10:57:55,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-24 10:57:55,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.317829457364341) internal successors, (299), 129 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:55,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 299 transitions. [2021-10-24 10:57:55,831 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 299 transitions. Word has length 11 [2021-10-24 10:57:55,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:55,832 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 299 transitions. [2021-10-24 10:57:55,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) 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) [2021-10-24 10:57:55,832 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 299 transitions. [2021-10-24 10:57:55,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:57:55,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:55,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:55,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:57:55,834 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:57:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:55,835 INFO L82 PathProgramCache]: Analyzing trace with hash -877154837, now seen corresponding path program 1 times [2021-10-24 10:57:55,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:57:55,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446723208] [2021-10-24 10:57:55,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:55,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:57:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:55,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:57:55,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446723208] [2021-10-24 10:57:55,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446723208] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:55,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:55,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:57:55,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790535811] [2021-10-24 10:57:55,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:57:55,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:57:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:57:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:57:55,900 INFO L87 Difference]: Start difference. First operand 130 states and 299 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) [2021-10-24 10:57:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:55,943 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2021-10-24 10:57:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:57:55,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 [2021-10-24 10:57:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:55,945 INFO L225 Difference]: With dead ends: 116 [2021-10-24 10:57:55,945 INFO L226 Difference]: Without dead ends: 92 [2021-10-24 10:57:55,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:57:55,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-24 10:57:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-24 10:57:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.043956043956044) internal successors, (186), 91 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2021-10-24 10:57:55,959 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2021-10-24 10:57:55,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:55,959 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2021-10-24 10:57:55,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) [2021-10-24 10:57:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2021-10-24 10:57:55,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 10:57:55,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:55,966 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:55,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:57:55,967 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:57:55,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:55,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2084088159, now seen corresponding path program 1 times [2021-10-24 10:57:55,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:57:55,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819642584] [2021-10-24 10:57:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:55,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:57:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:56,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:57:56,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819642584] [2021-10-24 10:57:56,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819642584] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:56,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:56,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 10:57:56,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820611431] [2021-10-24 10:57:56,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:57:56,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:57:56,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:57:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:57:56,086 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) 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) [2021-10-24 10:57:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:56,133 INFO L93 Difference]: Finished difference Result 81 states and 162 transitions. [2021-10-24 10:57:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:57:56,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) 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 [2021-10-24 10:57:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:56,134 INFO L225 Difference]: With dead ends: 81 [2021-10-24 10:57:56,134 INFO L226 Difference]: Without dead ends: 73 [2021-10-24 10:57:56,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:57:56,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-24 10:57:56,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-24 10:57:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 72 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 148 transitions. [2021-10-24 10:57:56,144 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 148 transitions. Word has length 14 [2021-10-24 10:57:56,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:56,144 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 148 transitions. [2021-10-24 10:57:56,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) 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) [2021-10-24 10:57:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 148 transitions. [2021-10-24 10:57:56,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 10:57:56,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:56,148 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:56,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:57:56,148 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:57:56,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:56,160 INFO L82 PathProgramCache]: Analyzing trace with hash -151180486, now seen corresponding path program 1 times [2021-10-24 10:57:56,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:57:56,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454381861] [2021-10-24 10:57:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:56,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:57:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:56,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:57:56,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454381861] [2021-10-24 10:57:56,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454381861] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:56,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:56,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:57:56,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304977688] [2021-10-24 10:57:56,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:57:56,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:57:56,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:57:56,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:57:56,284 INFO L87 Difference]: Start difference. First operand 73 states and 148 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2021-10-24 10:57:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:56,318 INFO L93 Difference]: Finished difference Result 87 states and 170 transitions. [2021-10-24 10:57:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:57:56,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 [2021-10-24 10:57:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:56,320 INFO L225 Difference]: With dead ends: 87 [2021-10-24 10:57:56,320 INFO L226 Difference]: Without dead ends: 51 [2021-10-24 10:57:56,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:57:56,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-24 10:57:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2021-10-24 10:57:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.826086956521739) internal successors, (84), 46 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 84 transitions. [2021-10-24 10:57:56,326 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 84 transitions. Word has length 17 [2021-10-24 10:57:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:56,327 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 84 transitions. [2021-10-24 10:57:56,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2021-10-24 10:57:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 84 transitions. [2021-10-24 10:57:56,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 10:57:56,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:56,328 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:56,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 10:57:56,328 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:57:56,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:56,329 INFO L82 PathProgramCache]: Analyzing trace with hash -349271942, now seen corresponding path program 2 times [2021-10-24 10:57:56,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:57:56,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933068359] [2021-10-24 10:57:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:56,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:57:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:56,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:57:56,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933068359] [2021-10-24 10:57:56,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933068359] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:56,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:56,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 10:57:56,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012968886] [2021-10-24 10:57:56,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:57:56,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:57:56,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:57:56,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:57:56,439 INFO L87 Difference]: Start difference. First operand 47 states and 84 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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) [2021-10-24 10:57:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:56,479 INFO L93 Difference]: Finished difference Result 61 states and 106 transitions. [2021-10-24 10:57:56,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:57:56,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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 [2021-10-24 10:57:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:56,480 INFO L225 Difference]: With dead ends: 61 [2021-10-24 10:57:56,481 INFO L226 Difference]: Without dead ends: 34 [2021-10-24 10:57:56,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:57:56,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-24 10:57:56,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-24 10:57:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2021-10-24 10:57:56,483 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 17 [2021-10-24 10:57:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:56,483 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2021-10-24 10:57:56,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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) [2021-10-24 10:57:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2021-10-24 10:57:56,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 10:57:56,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:56,485 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:56,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 10:57:56,485 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:57:56,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:56,486 INFO L82 PathProgramCache]: Analyzing trace with hash -610065656, now seen corresponding path program 3 times [2021-10-24 10:57:56,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:57:56,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262827691] [2021-10-24 10:57:56,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:56,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:57:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:56,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:57:56,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262827691] [2021-10-24 10:57:56,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262827691] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:56,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:56,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:57:56,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027203261] [2021-10-24 10:57:56,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:57:56,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:57:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:57:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:57:56,544 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2021-10-24 10:57:56,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:56,569 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2021-10-24 10:57:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:57:56,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 [2021-10-24 10:57:56,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:56,570 INFO L225 Difference]: With dead ends: 33 [2021-10-24 10:57:56,570 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:57:56,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:57:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:57:56,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:57:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:57:56,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-24 10:57:56,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:56,572 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:57:56,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2021-10-24 10:57:56,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:57:56,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:57:56,575 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:57:56,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 10:57:56,589 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 10:57:56,590 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-24 10:57:56,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 10:57:56,594 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 10:57:56,594 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:57:56,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:57:56 BasicIcfg [2021-10-24 10:57:56,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:57:56,597 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:57:56,597 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:57:56,597 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:57:56,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:51" (3/4) ... [2021-10-24 10:57:56,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:57:56,607 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-24 10:57:56,607 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-24 10:57:56,608 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-24 10:57:56,614 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-24 10:57:56,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:57:56,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:57:56,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:57:56,660 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:57:56,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:57:56,662 INFO L168 Benchmark]: Toolchain (without parser) took 6180.49 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 76.5 MB in the beginning and 106.2 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:57:56,662 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:57:56,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.00 ms. Allocated memory is still 113.2 MB. Free memory was 76.3 MB in the beginning and 78.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:56,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.08 ms. Allocated memory is still 113.2 MB. Free memory was 78.1 MB in the beginning and 76.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:56,664 INFO L168 Benchmark]: Boogie Preprocessor took 25.35 ms. Allocated memory is still 113.2 MB. Free memory was 76.0 MB in the beginning and 74.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:57:56,665 INFO L168 Benchmark]: RCFGBuilder took 431.29 ms. Allocated memory is still 113.2 MB. Free memory was 74.9 MB in the beginning and 62.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:56,668 INFO L168 Benchmark]: TraceAbstraction took 4929.76 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 62.4 MB in the beginning and 109.4 MB in the end (delta: -47.0 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:56,668 INFO L168 Benchmark]: Witness Printer took 63.60 ms. Allocated memory is still 136.3 MB. Free memory was 109.4 MB in the beginning and 106.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:56,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 680.00 ms. Allocated memory is still 113.2 MB. Free memory was 76.3 MB in the beginning and 78.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.08 ms. Allocated memory is still 113.2 MB. Free memory was 78.1 MB in the beginning and 76.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.35 ms. Allocated memory is still 113.2 MB. Free memory was 76.0 MB in the beginning and 74.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 431.29 ms. Allocated memory is still 113.2 MB. Free memory was 74.9 MB in the beginning and 62.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4929.76 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 62.4 MB in the beginning and 109.4 MB in the end (delta: -47.0 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. * Witness Printer took 63.60 ms. Allocated memory is still 136.3 MB. Free memory was 109.4 MB in the beginning and 106.2 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: 2956.3ms, 91 PlacesBefore, 31 PlacesAfterwards, 83 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 2375 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1486, positive: 1405, positive conditional: 0, positive unconditional: 1405, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 939, positive: 911, positive conditional: 0, positive unconditional: 911, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 939, positive: 903, positive conditional: 0, positive unconditional: 903, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 137, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1486, positive: 494, positive conditional: 0, positive unconditional: 494, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 939, unknown conditional: 0, unknown unconditional: 939] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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, 105 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4768.8ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 25.6ms, AutomataDifference: 441.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3027.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 181 SDtfs, 197 SDslu, 312 SDs, 0 SdLazy, 128 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 132.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 112.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.4ms SsaConstructionTime, 261.1ms SatisfiabilityAnalysisTime, 575.3ms InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2021-10-24 10:57:56,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a811a04d-be00-48f1-a786-0a174430b1c1/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...