./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG --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 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:48:06,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:48:06,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:48:06,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:48:06,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:48:06,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:48:06,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:48:06,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:48:06,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:48:06,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:48:06,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:48:06,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:48:06,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:48:06,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:48:06,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:48:06,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:48:06,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:48:06,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:48:06,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:48:06,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:48:06,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:48:06,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:48:06,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:48:06,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:48:06,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:48:06,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:48:06,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:48:06,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:48:06,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:48:06,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:48:06,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:48:06,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:48:06,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:48:06,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:48:06,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:48:06,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:48:06,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:48:06,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:48:06,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:48:06,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:48:06,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:48:06,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:48:07,028 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:48:07,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:48:07,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:48:07,030 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:48:07,031 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:48:07,031 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:48:07,031 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:48:07,031 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:48:07,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:48:07,038 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:48:07,039 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:48:07,039 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:48:07,040 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:48:07,040 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:48:07,040 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:48:07,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:48:07,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:48:07,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:48:07,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:48:07,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:48:07,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:48:07,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:48:07,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:48:07,043 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:48:07,043 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:48:07,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:48:07,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:48:07,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:48:07,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:48:07,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:48:07,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:48:07,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:48:07,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:48:07,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:48:07,047 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:48:07,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:48:07,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:48:07,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:48:07,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:48:07,048 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_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce [2021-10-29 05:48:07,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:48:07,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:48:07,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:48:07,420 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:48:07,421 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:48:07,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/pthread-wmm/safe005_tso.i [2021-10-29 05:48:07,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/data/8743793e0/cc099eed9147435fb32d738fbc9d1cee/FLAG35515fbb1 [2021-10-29 05:48:08,047 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:48:08,048 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/sv-benchmarks/c/pthread-wmm/safe005_tso.i [2021-10-29 05:48:08,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/data/8743793e0/cc099eed9147435fb32d738fbc9d1cee/FLAG35515fbb1 [2021-10-29 05:48:08,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/data/8743793e0/cc099eed9147435fb32d738fbc9d1cee [2021-10-29 05:48:08,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:48:08,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:48:08,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:48:08,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:48:08,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:48:08,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:08,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296765b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08, skipping insertion in model container [2021-10-29 05:48:08,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:08,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:48:08,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:48:08,625 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_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2021-10-29 05:48:08,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:48:08,832 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:48:08,844 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_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2021-10-29 05:48:08,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:48:08,943 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:48:08,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08 WrapperNode [2021-10-29 05:48:08,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:48:08,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:48:08,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:48:08,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:48:08,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:08,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:09,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:48:09,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:48:09,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:48:09,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:48:09,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:09,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:09,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:09,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:09,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:09,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:09,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:09,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:48:09,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:48:09,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:48:09,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:48:09,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (1/1) ... [2021-10-29 05:48:09,091 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:48:09,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:48:09,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:48:09,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:48:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:48:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-29 05:48:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:48:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:48:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-29 05:48:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-29 05:48:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-29 05:48:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-29 05:48:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-29 05:48:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-29 05:48:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:48:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-29 05:48:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:48:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:48:09,153 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-29 05:48:09,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:48:09,441 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-29 05:48:09,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:48:09 BoogieIcfgContainer [2021-10-29 05:48:09,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:48:09,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:48:09,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:48:09,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:48:09,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:48:08" (1/3) ... [2021-10-29 05:48:09,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fba425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:48:09, skipping insertion in model container [2021-10-29 05:48:09,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:08" (2/3) ... [2021-10-29 05:48:09,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fba425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:48:09, skipping insertion in model container [2021-10-29 05:48:09,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:48:09" (3/3) ... [2021-10-29 05:48:09,453 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2021-10-29 05:48:09,458 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-29 05:48:09,459 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:48:09,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:48:09,459 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-29 05:48:09,497 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,498 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,498 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,499 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,499 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,499 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,501 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,502 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,502 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,507 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,507 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,509 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,509 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,520 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,521 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,521 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,521 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,525 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,526 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:48:09,529 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-29 05:48:09,577 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:48:09,592 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 [2021-10-29 05:48:09,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-29 05:48:09,611 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-29 05:48:09,624 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-10-29 05:48:09,627 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-10-29 05:48:09,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-29 05:48:09,698 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-29 05:48:09,698 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-29 05:48:09,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-29 05:48:09,706 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-29 05:48:12,942 INFO L131 LiptonReduction]: Checked pairs total: 2476 [2021-10-29 05:48:12,942 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-10-29 05:48:12,950 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-10-29 05:48:12,978 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:48:12,988 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:12,989 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:12,989 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:48:12,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash -892154175, now seen corresponding path program 1 times [2021-10-29 05:48:13,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:13,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524772584] [2021-10-29 05:48:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:13,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:13,308 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:13,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524772584] [2021-10-29 05:48:13,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524772584] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:13,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:13,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:48:13,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609685294] [2021-10-29 05:48:13,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:48:13,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:13,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:48:13,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:48:13,349 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:13,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:13,419 INFO L93 Difference]: Finished difference Result 356 states and 932 transitions. [2021-10-29 05:48:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:48:13,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:48:13,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:13,443 INFO L225 Difference]: With dead ends: 356 [2021-10-29 05:48:13,444 INFO L226 Difference]: Without dead ends: 292 [2021-10-29 05:48:13,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:48:13,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-29 05:48:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 250. [2021-10-29 05:48:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 2.570281124497992) internal successors, (640), 249 states have internal predecessors, (640), 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) [2021-10-29 05:48:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 640 transitions. [2021-10-29 05:48:13,513 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 640 transitions. Word has length 8 [2021-10-29 05:48:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:13,515 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 640 transitions. [2021-10-29 05:48:13,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 640 transitions. [2021-10-29 05:48:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:48:13,517 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:13,517 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:13,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:48:13,518 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:48:13,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:13,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1886977122, now seen corresponding path program 1 times [2021-10-29 05:48:13,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:13,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446311825] [2021-10-29 05:48:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:13,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:13,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:13,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446311825] [2021-10-29 05:48:13,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446311825] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:13,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:13,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:48:13,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052068380] [2021-10-29 05:48:13,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:48:13,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:48:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:48:13,592 INFO L87 Difference]: Start difference. First operand 250 states and 640 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-10-29 05:48:13,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:13,600 INFO L93 Difference]: Finished difference Result 238 states and 599 transitions. [2021-10-29 05:48:13,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:48:13,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2021-10-29 05:48:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:13,603 INFO L225 Difference]: With dead ends: 238 [2021-10-29 05:48:13,603 INFO L226 Difference]: Without dead ends: 202 [2021-10-29 05:48:13,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:48:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-29 05:48:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 194. [2021-10-29 05:48:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.5751295336787563) internal successors, (497), 193 states have internal predecessors, (497), 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) [2021-10-29 05:48:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 497 transitions. [2021-10-29 05:48:13,619 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 497 transitions. Word has length 9 [2021-10-29 05:48:13,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:13,620 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 497 transitions. [2021-10-29 05:48:13,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-10-29 05:48:13,620 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 497 transitions. [2021-10-29 05:48:13,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:48:13,622 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:13,622 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:13,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:48:13,622 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:48:13,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:13,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1632043834, now seen corresponding path program 1 times [2021-10-29 05:48:13,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:13,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442421397] [2021-10-29 05:48:13,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:13,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:13,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:13,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442421397] [2021-10-29 05:48:13,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442421397] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:13,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:13,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:48:13,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896879066] [2021-10-29 05:48:13,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:48:13,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:13,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:48:13,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:48:13,709 INFO L87 Difference]: Start difference. First operand 194 states and 497 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) [2021-10-29 05:48:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:13,758 INFO L93 Difference]: Finished difference Result 304 states and 727 transitions. [2021-10-29 05:48:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:48:13,759 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 [2021-10-29 05:48:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:13,762 INFO L225 Difference]: With dead ends: 304 [2021-10-29 05:48:13,762 INFO L226 Difference]: Without dead ends: 188 [2021-10-29 05:48:13,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:48:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-29 05:48:13,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 164. [2021-10-29 05:48:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.423312883435583) internal successors, (395), 163 states have internal predecessors, (395), 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) [2021-10-29 05:48:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 395 transitions. [2021-10-29 05:48:13,790 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 395 transitions. Word has length 10 [2021-10-29 05:48:13,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:13,790 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 395 transitions. [2021-10-29 05:48:13,790 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) [2021-10-29 05:48:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 395 transitions. [2021-10-29 05:48:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:48:13,793 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:13,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:13,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:48:13,794 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:48:13,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:13,800 INFO L85 PathProgramCache]: Analyzing trace with hash -908858622, now seen corresponding path program 1 times [2021-10-29 05:48:13,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:13,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975779962] [2021-10-29 05:48:13,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:13,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:13,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:13,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975779962] [2021-10-29 05:48:13,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975779962] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:13,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:13,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:48:13,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731515641] [2021-10-29 05:48:13,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:48:13,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:13,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:48:13,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:48:13,857 INFO L87 Difference]: Start difference. First operand 164 states and 395 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2021-10-29 05:48:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:13,883 INFO L93 Difference]: Finished difference Result 264 states and 599 transitions. [2021-10-29 05:48:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:48:13,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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 [2021-10-29 05:48:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:13,886 INFO L225 Difference]: With dead ends: 264 [2021-10-29 05:48:13,893 INFO L226 Difference]: Without dead ends: 148 [2021-10-29 05:48:13,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:48:13,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-29 05:48:13,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2021-10-29 05:48:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.2869565217391306) internal successors, (263), 115 states have internal predecessors, (263), 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) [2021-10-29 05:48:13,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 263 transitions. [2021-10-29 05:48:13,906 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 263 transitions. Word has length 11 [2021-10-29 05:48:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:13,906 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 263 transitions. [2021-10-29 05:48:13,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2021-10-29 05:48:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 263 transitions. [2021-10-29 05:48:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:48:13,913 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:13,913 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:13,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:48:13,914 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:48:13,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash 292535945, now seen corresponding path program 1 times [2021-10-29 05:48:13,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:13,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106545545] [2021-10-29 05:48:13,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:13,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:13,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:13,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106545545] [2021-10-29 05:48:13,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106545545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:13,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:13,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:48:13,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72309304] [2021-10-29 05:48:14,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:48:14,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:48:14,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:48:14,001 INFO L87 Difference]: Start difference. First operand 116 states and 263 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:14,012 INFO L93 Difference]: Finished difference Result 110 states and 244 transitions. [2021-10-29 05:48:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:48:14,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:48:14,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:14,014 INFO L225 Difference]: With dead ends: 110 [2021-10-29 05:48:14,014 INFO L226 Difference]: Without dead ends: 102 [2021-10-29 05:48:14,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:48:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-29 05:48:14,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2021-10-29 05:48:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.2268041237113403) internal successors, (216), 97 states have internal predecessors, (216), 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) [2021-10-29 05:48:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 216 transitions. [2021-10-29 05:48:14,021 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 216 transitions. Word has length 12 [2021-10-29 05:48:14,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:14,021 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 216 transitions. [2021-10-29 05:48:14,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,022 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 216 transitions. [2021-10-29 05:48:14,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:48:14,024 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:14,024 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:14,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:48:14,025 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:48:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash 476757191, now seen corresponding path program 1 times [2021-10-29 05:48:14,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:14,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925898545] [2021-10-29 05:48:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:14,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:14,152 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:14,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925898545] [2021-10-29 05:48:14,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925898545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:14,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:14,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:48:14,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123846597] [2021-10-29 05:48:14,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:48:14,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:14,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:48:14,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:48:14,159 INFO L87 Difference]: Start difference. First operand 98 states and 216 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:14,190 INFO L93 Difference]: Finished difference Result 116 states and 237 transitions. [2021-10-29 05:48:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:48:14,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 05:48:14,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:14,192 INFO L225 Difference]: With dead ends: 116 [2021-10-29 05:48:14,192 INFO L226 Difference]: Without dead ends: 84 [2021-10-29 05:48:14,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:48:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-29 05:48:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-29 05:48:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.036144578313253) internal successors, (169), 83 states have internal predecessors, (169), 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) [2021-10-29 05:48:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 169 transitions. [2021-10-29 05:48:14,198 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 169 transitions. Word has length 13 [2021-10-29 05:48:14,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:14,198 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 169 transitions. [2021-10-29 05:48:14,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 169 transitions. [2021-10-29 05:48:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:48:14,200 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:14,200 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:14,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:48:14,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:48:14,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:14,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1492650590, now seen corresponding path program 1 times [2021-10-29 05:48:14,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:14,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747558453] [2021-10-29 05:48:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:14,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:14,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:14,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747558453] [2021-10-29 05:48:14,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747558453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:14,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:14,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:48:14,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595305585] [2021-10-29 05:48:14,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:48:14,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:14,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:48:14,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:48:14,294 INFO L87 Difference]: Start difference. First operand 84 states and 169 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:14,335 INFO L93 Difference]: Finished difference Result 86 states and 160 transitions. [2021-10-29 05:48:14,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:48:14,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:48:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:14,342 INFO L225 Difference]: With dead ends: 86 [2021-10-29 05:48:14,342 INFO L226 Difference]: Without dead ends: 66 [2021-10-29 05:48:14,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:48:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-29 05:48:14,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-29 05:48:14,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.8153846153846154) internal successors, (118), 65 states have internal predecessors, (118), 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) [2021-10-29 05:48:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 118 transitions. [2021-10-29 05:48:14,349 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 118 transitions. Word has length 14 [2021-10-29 05:48:14,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:14,350 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 118 transitions. [2021-10-29 05:48:14,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,350 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 118 transitions. [2021-10-29 05:48:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:48:14,353 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:14,353 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:14,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:48:14,353 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:48:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 972217750, now seen corresponding path program 1 times [2021-10-29 05:48:14,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:14,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411944078] [2021-10-29 05:48:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:14,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:14,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:14,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411944078] [2021-10-29 05:48:14,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411944078] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:14,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:14,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:48:14,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454031635] [2021-10-29 05:48:14,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:48:14,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:48:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:48:14,428 INFO L87 Difference]: Start difference. First operand 66 states and 118 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:14,461 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2021-10-29 05:48:14,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:48:14,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 05:48:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:14,463 INFO L225 Difference]: With dead ends: 63 [2021-10-29 05:48:14,463 INFO L226 Difference]: Without dead ends: 56 [2021-10-29 05:48:14,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:48:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-29 05:48:14,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2021-10-29 05:48:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 51 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 90 transitions. [2021-10-29 05:48:14,466 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 90 transitions. Word has length 15 [2021-10-29 05:48:14,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:14,467 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 90 transitions. [2021-10-29 05:48:14,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 90 transitions. [2021-10-29 05:48:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:48:14,468 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:14,468 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:14,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 05:48:14,468 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-29 05:48:14,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:14,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2045958635, now seen corresponding path program 1 times [2021-10-29 05:48:14,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:14,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273318677] [2021-10-29 05:48:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:14,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:14,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:14,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273318677] [2021-10-29 05:48:14,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273318677] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:14,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:14,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:48:14,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640278517] [2021-10-29 05:48:14,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:48:14,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:14,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:48:14,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:48:14,510 INFO L87 Difference]: Start difference. First operand 52 states and 90 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:14,519 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2021-10-29 05:48:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:48:14,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-29 05:48:14,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:14,520 INFO L225 Difference]: With dead ends: 51 [2021-10-29 05:48:14,520 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:48:14,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:48:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:48:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:48:14,521 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) [2021-10-29 05:48:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:48:14,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-29 05:48:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:14,521 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:48:14,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:48:14,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:48:14,524 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:48:14,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-29 05:48:14,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-29 05:48:14,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-29 05:48:14,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 05:48:14,528 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:14,530 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-29 05:48:14,531 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:48:14,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:48:14 BasicIcfg [2021-10-29 05:48:14,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:48:14,533 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:48:14,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:48:14,534 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:48:14,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:48:09" (3/4) ... [2021-10-29 05:48:14,537 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:48:14,548 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-29 05:48:14,548 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-29 05:48:14,548 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-29 05:48:14,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-29 05:48:14,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:48:14,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:48:14,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:48:14,590 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:48:14,590 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:48:14,592 INFO L168 Benchmark]: Toolchain (without parser) took 6248.55 ms. Allocated memory was 127.9 MB in the beginning and 172.0 MB in the end (delta: 44.0 MB). Free memory was 89.4 MB in the beginning and 122.6 MB in the end (delta: -33.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:48:14,592 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 127.9 MB. Free memory is still 108.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:48:14,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.97 ms. Allocated memory is still 127.9 MB. Free memory was 89.2 MB in the beginning and 93.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:48:14,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.94 ms. Allocated memory is still 127.9 MB. Free memory was 93.5 MB in the beginning and 91.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:48:14,594 INFO L168 Benchmark]: Boogie Preprocessor took 45.98 ms. Allocated memory is still 127.9 MB. Free memory was 91.4 MB in the beginning and 90.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:48:14,594 INFO L168 Benchmark]: RCFGBuilder took 368.84 ms. Allocated memory is still 127.9 MB. Free memory was 90.4 MB in the beginning and 77.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:48:14,595 INFO L168 Benchmark]: TraceAbstraction took 5087.59 ms. Allocated memory was 127.9 MB in the beginning and 172.0 MB in the end (delta: 44.0 MB). Free memory was 77.3 MB in the beginning and 125.7 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:48:14,595 INFO L168 Benchmark]: Witness Printer took 57.28 ms. Allocated memory is still 172.0 MB. Free memory was 125.7 MB in the beginning and 122.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:48:14,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 127.9 MB. Free memory is still 108.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 584.97 ms. Allocated memory is still 127.9 MB. Free memory was 89.2 MB in the beginning and 93.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.94 ms. Allocated memory is still 127.9 MB. Free memory was 93.5 MB in the beginning and 91.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.98 ms. Allocated memory is still 127.9 MB. Free memory was 91.4 MB in the beginning and 90.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 368.84 ms. Allocated memory is still 127.9 MB. Free memory was 90.4 MB in the beginning and 77.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5087.59 ms. Allocated memory was 127.9 MB in the beginning and 172.0 MB in the end (delta: 44.0 MB). Free memory was 77.3 MB in the beginning and 125.7 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 57.28 ms. Allocated memory is still 172.0 MB. Free memory was 125.7 MB in the beginning and 122.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2476 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1469, positive: 1388, positive conditional: 0, positive unconditional: 1388, 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: 1028, positive: 975, positive conditional: 0, positive unconditional: 975, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1028, positive: 960, positive conditional: 0, positive unconditional: 960, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 68, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 226, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 167, negative conditional: 0, negative unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1469, positive: 413, positive conditional: 0, positive unconditional: 413, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 1028, unknown conditional: 0, unknown unconditional: 1028] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 163 SDtfs, 175 SDslu, 183 SDs, 0 SdLazy, 116 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=1, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 114 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 424 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! [2021-10-29 05:48:14,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0bc7309-86e4-4e5e-adfa-81930cf3b1b1/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...