./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:13:07,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:13:07,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:13:07,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:13:07,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:13:07,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:13:07,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:13:07,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:13:07,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:13:07,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:13:07,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:13:07,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:13:07,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:13:07,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:13:07,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:13:07,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:13:07,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:13:07,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:13:07,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:13:07,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:13:07,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:13:07,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:13:07,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:13:07,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:13:07,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:13:07,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:13:07,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:13:07,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:13:07,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:13:07,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:13:07,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:13:07,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:13:07,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:13:07,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:13:07,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:13:07,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:13:07,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:13:07,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:13:07,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:13:07,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:13:07,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:13:07,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:13:07,953 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:13:07,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:13:07,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:13:07,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:13:07,955 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:13:07,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:13:07,956 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:13:07,956 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:13:07,962 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:13:07,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:13:07,964 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:13:07,964 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:13:07,964 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:13:07,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:13:07,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:13:07,965 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:13:07,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:13:07,966 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:13:07,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:13:07,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:13:07,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:13:07,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:13:07,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:13:07,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:13:07,967 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:13:07,967 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:13:07,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:13:07,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:13:07,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:13:07,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:13:07,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:13:07,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:13:07,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:13:07,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:13:07,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:13:07,971 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:13:07,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:13:07,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:13:07,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:13:07,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:13:07,972 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_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2021-11-12 23:13:08,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:13:08,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:13:08,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:13:08,328 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:13:08,329 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:13:08,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/pthread-wmm/mix046.opt.i [2021-11-12 23:13:08,402 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/data/724efc6c4/bee68d9344f4480793ebe35e0d48e59a/FLAGe5b27f936 [2021-11-12 23:13:09,035 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:13:09,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/sv-benchmarks/c/pthread-wmm/mix046.opt.i [2021-11-12 23:13:09,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/data/724efc6c4/bee68d9344f4480793ebe35e0d48e59a/FLAGe5b27f936 [2021-11-12 23:13:09,286 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/data/724efc6c4/bee68d9344f4480793ebe35e0d48e59a [2021-11-12 23:13:09,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:13:09,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:13:09,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:13:09,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:13:09,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:13:09,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:13:09" (1/1) ... [2021-11-12 23:13:09,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b308d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:09, skipping insertion in model container [2021-11-12 23:13:09,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:13:09" (1/1) ... [2021-11-12 23:13:09,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:13:09,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:13:09,611 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_23fb2b13-65ba-4148-800f-6ec9dc692dc7/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2021-11-12 23:13:09,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:13:09,883 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:13:09,899 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_23fb2b13-65ba-4148-800f-6ec9dc692dc7/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2021-11-12 23:13:09,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:13:10,040 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:13:10,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10 WrapperNode [2021-11-12 23:13:10,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:13:10,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:13:10,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:13:10,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:13:10,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (1/1) ... [2021-11-12 23:13:10,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (1/1) ... [2021-11-12 23:13:10,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:13:10,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:13:10,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:13:10,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:13:10,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (1/1) ... [2021-11-12 23:13:10,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (1/1) ... [2021-11-12 23:13:10,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (1/1) ... [2021-11-12 23:13:10,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (1/1) ... [2021-11-12 23:13:10,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (1/1) ... [2021-11-12 23:13:10,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (1/1) ... [2021-11-12 23:13:10,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (1/1) ... [2021-11-12 23:13:10,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:13:10,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:13:10,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:13:10,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:13:10,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (1/1) ... [2021-11-12 23:13:10,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:13:10,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:13:10,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:13:10,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:13:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:13:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-12 23:13:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:13:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:13:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-12 23:13:10,317 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-12 23:13:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-12 23:13:10,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-12 23:13:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-12 23:13:10,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-12 23:13:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-11-12 23:13:10,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-11-12 23:13:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:13:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-12 23:13:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:13:10,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:13:10,321 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 23:13:11,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:13:11,567 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:13:11,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:11 BoogieIcfgContainer [2021-11-12 23:13:11,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:13:11,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:13:11,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:13:11,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:13:11,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:13:09" (1/3) ... [2021-11-12 23:13:11,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b6fe79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:11, skipping insertion in model container [2021-11-12 23:13:11,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:10" (2/3) ... [2021-11-12 23:13:11,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b6fe79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:11, skipping insertion in model container [2021-11-12 23:13:11,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:11" (3/3) ... [2021-11-12 23:13:11,579 INFO L111 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2021-11-12 23:13:11,584 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 23:13:11,585 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:13:11,585 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:13:11,585 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 23:13:11,646 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,646 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,647 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,647 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,647 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,647 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,648 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,648 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,649 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,649 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,649 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,649 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,650 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,650 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,650 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,651 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,651 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,651 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,651 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,652 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,652 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,652 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,653 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,653 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,653 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,653 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,654 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,654 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,654 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,654 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,654 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,654 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,655 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,655 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,655 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,655 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,655 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,656 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,656 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,656 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,656 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,657 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,657 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,657 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,657 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,658 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,658 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,658 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,659 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,659 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,659 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,660 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,660 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,660 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,660 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,660 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,660 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,661 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,661 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,661 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,661 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,661 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,662 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,662 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,662 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,663 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,663 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,663 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,664 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,664 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,664 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,664 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,664 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,665 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,665 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,666 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,666 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,669 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,669 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,669 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,670 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,670 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,671 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,672 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,681 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,681 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,689 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,689 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,690 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,690 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,691 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,691 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,691 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,691 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,691 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,692 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,692 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,692 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,693 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,693 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,693 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,693 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,694 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,694 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,694 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,694 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,695 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,695 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,695 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,695 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,695 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,696 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,696 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,696 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:11,697 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-12 23:13:11,742 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:13:11,749 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:13:11,749 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-12 23:13:11,764 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 23:13:11,777 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 137 transitions, 294 flow [2021-11-12 23:13:11,780 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 137 transitions, 294 flow [2021-11-12 23:13:11,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2021-11-12 23:13:11,884 INFO L129 PetriNetUnfolder]: 2/133 cut-off events. [2021-11-12 23:13:11,885 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-12 23:13:11,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-11-12 23:13:11,896 INFO L116 LiptonReduction]: Number of co-enabled transitions 3168 [2021-11-12 23:13:32,363 INFO L131 LiptonReduction]: Checked pairs total: 6552 [2021-11-12 23:13:32,363 INFO L133 LiptonReduction]: Total number of compositions: 114 [2021-11-12 23:13:32,380 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 32 transitions, 84 flow [2021-11-12 23:13:32,542 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2602 states, 2599 states have (on average 3.841477491342824) internal successors, (9984), 2601 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 2602 states, 2599 states have (on average 3.841477491342824) internal successors, (9984), 2601 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:32,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:13:32,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:32,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:32,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:32,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2025843606, now seen corresponding path program 1 times [2021-11-12 23:13:32,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:32,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213851857] [2021-11-12 23:13:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:32,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:32,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:32,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213851857] [2021-11-12 23:13:32,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213851857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:32,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:32,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:13:32,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001800629] [2021-11-12 23:13:32,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:32,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:13:32,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:33,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:13:33,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:13:33,036 INFO L87 Difference]: Start difference. First operand has 2602 states, 2599 states have (on average 3.841477491342824) internal successors, (9984), 2601 states have internal predecessors, (9984), 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 4.5) 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) [2021-11-12 23:13:33,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:33,205 INFO L93 Difference]: Finished difference Result 2202 states and 8344 transitions. [2021-11-12 23:13:33,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:13:33,217 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 [2021-11-12 23:13:33,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:33,266 INFO L225 Difference]: With dead ends: 2202 [2021-11-12 23:13:33,266 INFO L226 Difference]: Without dead ends: 2122 [2021-11-12 23:13:33,267 INFO L932 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 [2021-11-12 23:13:33,271 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.44ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:33,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 39 Unknown, 0 Unchecked, 2.44ms Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 79.72ms Time] [2021-11-12 23:13:33,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-11-12 23:13:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2021-11-12 23:13:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 3.8095238095238093) internal successors, (8080), 2121 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 8080 transitions. [2021-11-12 23:13:33,503 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 8080 transitions. Word has length 9 [2021-11-12 23:13:33,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:33,504 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 8080 transitions. [2021-11-12 23:13:33,505 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) [2021-11-12 23:13:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 8080 transitions. [2021-11-12 23:13:33,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:13:33,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:33,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:33,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:13:33,509 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1215613815, now seen corresponding path program 1 times [2021-11-12 23:13:33,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:33,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844883377] [2021-11-12 23:13:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:33,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:33,658 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:33,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844883377] [2021-11-12 23:13:33,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844883377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:33,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:33,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:13:33,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980740132] [2021-11-12 23:13:33,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:33,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:13:33,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:33,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:13:33,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:13:33,662 INFO L87 Difference]: Start difference. First operand 2122 states and 8080 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-11-12 23:13:33,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:33,757 INFO L93 Difference]: Finished difference Result 2074 states and 7860 transitions. [2021-11-12 23:13:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:13:33,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2021-11-12 23:13:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:33,785 INFO L225 Difference]: With dead ends: 2074 [2021-11-12 23:13:33,785 INFO L226 Difference]: Without dead ends: 2074 [2021-11-12 23:13:33,786 INFO L932 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 [2021-11-12 23:13:33,787 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.48ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:33,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 9 Invalid, 39 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 57.48ms Time] [2021-11-12 23:13:33,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2021-11-12 23:13:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2074. [2021-11-12 23:13:33,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 3.7916063675832126) internal successors, (7860), 2073 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 7860 transitions. [2021-11-12 23:13:33,900 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 7860 transitions. Word has length 11 [2021-11-12 23:13:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:33,904 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 7860 transitions. [2021-11-12 23:13:33,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-11-12 23:13:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 7860 transitions. [2021-11-12 23:13:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:13:33,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:33,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:33,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:13:33,912 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:33,913 INFO L85 PathProgramCache]: Analyzing trace with hash -940209845, now seen corresponding path program 1 times [2021-11-12 23:13:33,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:33,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534141660] [2021-11-12 23:13:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:33,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:34,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:34,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534141660] [2021-11-12 23:13:34,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534141660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:34,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:34,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:13:34,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773377103] [2021-11-12 23:13:34,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:34,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:13:34,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:34,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:13:34,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:13:34,087 INFO L87 Difference]: Start difference. First operand 2074 states and 7860 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-11-12 23:13:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:34,247 INFO L93 Difference]: Finished difference Result 1930 states and 7248 transitions. [2021-11-12 23:13:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:13:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 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 [2021-11-12 23:13:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:34,270 INFO L225 Difference]: With dead ends: 1930 [2021-11-12 23:13:34,271 INFO L226 Difference]: Without dead ends: 1930 [2021-11-12 23:13:34,271 INFO L932 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 [2021-11-12 23:13:34,276 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:34,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 34 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 128.64ms Time] [2021-11-12 23:13:34,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2021-11-12 23:13:34,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1930. [2021-11-12 23:13:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 3.7573872472783827) internal successors, (7248), 1929 states have internal predecessors, (7248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 7248 transitions. [2021-11-12 23:13:34,388 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 7248 transitions. Word has length 12 [2021-11-12 23:13:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:34,389 INFO L470 AbstractCegarLoop]: Abstraction has 1930 states and 7248 transitions. [2021-11-12 23:13:34,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-11-12 23:13:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 7248 transitions. [2021-11-12 23:13:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:13:34,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:34,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:34,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:13:34,394 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:34,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1598523512, now seen corresponding path program 1 times [2021-11-12 23:13:34,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:34,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613196054] [2021-11-12 23:13:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:34,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:34,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:34,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613196054] [2021-11-12 23:13:34,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613196054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:34,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:34,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:13:34,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728697216] [2021-11-12 23:13:34,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:34,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:13:34,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:34,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:13:34,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:13:34,678 INFO L87 Difference]: Start difference. First operand 1930 states and 7248 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) [2021-11-12 23:13:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:34,828 INFO L93 Difference]: Finished difference Result 2138 states and 7948 transitions. [2021-11-12 23:13:34,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:13:34,829 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 [2021-11-12 23:13:34,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:34,851 INFO L225 Difference]: With dead ends: 2138 [2021-11-12 23:13:34,852 INFO L226 Difference]: Without dead ends: 2138 [2021-11-12 23:13:34,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:13:34,853 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 49 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:34,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 13 Invalid, 60 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 92.76ms Time] [2021-11-12 23:13:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-11-12 23:13:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2138. [2021-11-12 23:13:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 2137 states have (on average 3.7192325690219934) internal successors, (7948), 2137 states have internal predecessors, (7948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 7948 transitions. [2021-11-12 23:13:34,997 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 7948 transitions. Word has length 14 [2021-11-12 23:13:34,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:34,997 INFO L470 AbstractCegarLoop]: Abstraction has 2138 states and 7948 transitions. [2021-11-12 23:13:34,997 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) [2021-11-12 23:13:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 7948 transitions. [2021-11-12 23:13:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:13:35,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:35,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:35,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:13:35,003 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:35,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:35,004 INFO L85 PathProgramCache]: Analyzing trace with hash 534247309, now seen corresponding path program 1 times [2021-11-12 23:13:35,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:35,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356324507] [2021-11-12 23:13:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:35,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:35,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:35,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356324507] [2021-11-12 23:13:35,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356324507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:35,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:35,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 23:13:35,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228715213] [2021-11-12 23:13:35,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:35,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:13:35,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:35,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:13:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:13:35,411 INFO L87 Difference]: Start difference. First operand 2138 states and 7948 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:35,650 INFO L93 Difference]: Finished difference Result 2570 states and 9604 transitions. [2021-11-12 23:13:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:13:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-11-12 23:13:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:35,679 INFO L225 Difference]: With dead ends: 2570 [2021-11-12 23:13:35,679 INFO L226 Difference]: Without dead ends: 2570 [2021-11-12 23:13:35,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:13:35,680 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 46 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 190.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:35,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 34 Invalid, 130 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [9 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 190.64ms Time] [2021-11-12 23:13:35,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-11-12 23:13:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 2282. [2021-11-12 23:13:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 2281 states have (on average 3.7474791758000876) internal successors, (8548), 2281 states have internal predecessors, (8548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 8548 transitions. [2021-11-12 23:13:35,841 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 8548 transitions. Word has length 16 [2021-11-12 23:13:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:35,841 INFO L470 AbstractCegarLoop]: Abstraction has 2282 states and 8548 transitions. [2021-11-12 23:13:35,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:35,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 8548 transitions. [2021-11-12 23:13:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:13:35,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:35,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:35,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 23:13:35,849 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:35,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:35,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1417113959, now seen corresponding path program 1 times [2021-11-12 23:13:35,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:35,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983500794] [2021-11-12 23:13:35,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:35,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:35,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:35,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983500794] [2021-11-12 23:13:35,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983500794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:35,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:35,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:13:35,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292776816] [2021-11-12 23:13:35,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:35,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:13:35,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:35,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:13:35,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:35,945 INFO L87 Difference]: Start difference. First operand 2282 states and 8548 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:36,085 INFO L93 Difference]: Finished difference Result 2390 states and 8162 transitions. [2021-11-12 23:13:36,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:13:36,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-11-12 23:13:36,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:36,114 INFO L225 Difference]: With dead ends: 2390 [2021-11-12 23:13:36,115 INFO L226 Difference]: Without dead ends: 1766 [2021-11-12 23:13:36,115 INFO L932 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 [2021-11-12 23:13:36,119 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:36,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 25 Invalid, 85 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 98.04ms Time] [2021-11-12 23:13:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2021-11-12 23:13:36,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1766. [2021-11-12 23:13:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1765 states have (on average 3.3813031161473086) internal successors, (5968), 1765 states have internal predecessors, (5968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 5968 transitions. [2021-11-12 23:13:36,191 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 5968 transitions. Word has length 16 [2021-11-12 23:13:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:36,191 INFO L470 AbstractCegarLoop]: Abstraction has 1766 states and 5968 transitions. [2021-11-12 23:13:36,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 5968 transitions. [2021-11-12 23:13:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:13:36,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:36,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:36,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 23:13:36,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:36,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:36,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1593575180, now seen corresponding path program 1 times [2021-11-12 23:13:36,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:36,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717372033] [2021-11-12 23:13:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:36,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:36,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:36,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717372033] [2021-11-12 23:13:36,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717372033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:36,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:36,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:13:36,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982294833] [2021-11-12 23:13:36,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:36,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:13:36,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:36,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:13:36,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:13:36,302 INFO L87 Difference]: Start difference. First operand 1766 states and 5968 transitions. Second operand has 5 states, 5 states have (on average 3.4) 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) [2021-11-12 23:13:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:36,454 INFO L93 Difference]: Finished difference Result 1537 states and 4780 transitions. [2021-11-12 23:13:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:13:36,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) 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 [2021-11-12 23:13:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:36,467 INFO L225 Difference]: With dead ends: 1537 [2021-11-12 23:13:36,467 INFO L226 Difference]: Without dead ends: 1147 [2021-11-12 23:13:36,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:13:36,468 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 68 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.24ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:36,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 35 Invalid, 110 Unknown, 0 Unchecked, 1.24ms Time], IncrementalHoareTripleChecker [8 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 127.77ms Time] [2021-11-12 23:13:36,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-11-12 23:13:36,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2021-11-12 23:13:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 3.0471204188481678) internal successors, (3492), 1146 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 3492 transitions. [2021-11-12 23:13:36,551 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 3492 transitions. Word has length 17 [2021-11-12 23:13:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:36,551 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 3492 transitions. [2021-11-12 23:13:36,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) 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) [2021-11-12 23:13:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 3492 transitions. [2021-11-12 23:13:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 23:13:36,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:36,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:36,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 23:13:36,556 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:36,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:36,556 INFO L85 PathProgramCache]: Analyzing trace with hash 554280561, now seen corresponding path program 1 times [2021-11-12 23:13:36,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:36,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793992627] [2021-11-12 23:13:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:36,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:36,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:36,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793992627] [2021-11-12 23:13:36,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793992627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:36,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:36,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:13:36,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284125661] [2021-11-12 23:13:36,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:36,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:13:36,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:36,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:13:36,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:13:36,625 INFO L87 Difference]: Start difference. First operand 1147 states and 3492 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:36,704 INFO L93 Difference]: Finished difference Result 1657 states and 4919 transitions. [2021-11-12 23:13:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:13:36,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2021-11-12 23:13:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:36,710 INFO L225 Difference]: With dead ends: 1657 [2021-11-12 23:13:36,710 INFO L226 Difference]: Without dead ends: 1161 [2021-11-12 23:13:36,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:13:36,712 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.81ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:36,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 55 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 65.81ms Time] [2021-11-12 23:13:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-11-12 23:13:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1141. [2021-11-12 23:13:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 2.8780701754385967) internal successors, (3281), 1140 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3281 transitions. [2021-11-12 23:13:36,754 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3281 transitions. Word has length 19 [2021-11-12 23:13:36,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:36,754 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 3281 transitions. [2021-11-12 23:13:36,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3281 transitions. [2021-11-12 23:13:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 23:13:36,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:36,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:36,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 23:13:36,758 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:36,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2037751013, now seen corresponding path program 1 times [2021-11-12 23:13:36,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:36,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178263640] [2021-11-12 23:13:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:36,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:36,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:36,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178263640] [2021-11-12 23:13:36,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178263640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:36,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:36,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 23:13:36,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120946633] [2021-11-12 23:13:36,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:36,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:13:36,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:13:36,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:13:36,903 INFO L87 Difference]: Start difference. First operand 1141 states and 3281 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:37,059 INFO L93 Difference]: Finished difference Result 1003 states and 2841 transitions. [2021-11-12 23:13:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:13:37,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2021-11-12 23:13:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:37,064 INFO L225 Difference]: With dead ends: 1003 [2021-11-12 23:13:37,064 INFO L226 Difference]: Without dead ends: 877 [2021-11-12 23:13:37,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:13:37,065 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 80 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:37,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 39 Invalid, 132 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 137.63ms Time] [2021-11-12 23:13:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-11-12 23:13:37,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 805. [2021-11-12 23:13:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.8694029850746268) internal successors, (2307), 804 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2307 transitions. [2021-11-12 23:13:37,095 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2307 transitions. Word has length 20 [2021-11-12 23:13:37,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:37,096 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 2307 transitions. [2021-11-12 23:13:37,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,097 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2307 transitions. [2021-11-12 23:13:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:13:37,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:37,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:37,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 23:13:37,101 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 566876883, now seen corresponding path program 1 times [2021-11-12 23:13:37,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:37,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79953400] [2021-11-12 23:13:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:37,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:37,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:37,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79953400] [2021-11-12 23:13:37,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79953400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:37,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:37,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:13:37,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807176442] [2021-11-12 23:13:37,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:37,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:13:37,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:13:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:37,220 INFO L87 Difference]: Start difference. First operand 805 states and 2307 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:37,328 INFO L93 Difference]: Finished difference Result 1032 states and 2891 transitions. [2021-11-12 23:13:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:13:37,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2021-11-12 23:13:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:37,331 INFO L225 Difference]: With dead ends: 1032 [2021-11-12 23:13:37,332 INFO L226 Difference]: Without dead ends: 592 [2021-11-12 23:13:37,332 INFO L932 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 [2021-11-12 23:13:37,333 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:37,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 21 Invalid, 100 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 95.39ms Time] [2021-11-12 23:13:37,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-12 23:13:37,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 589. [2021-11-12 23:13:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 2.608843537414966) internal successors, (1534), 588 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1534 transitions. [2021-11-12 23:13:37,352 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1534 transitions. Word has length 23 [2021-11-12 23:13:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:37,353 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 1534 transitions. [2021-11-12 23:13:37,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1534 transitions. [2021-11-12 23:13:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:13:37,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:37,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:37,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 23:13:37,356 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:37,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:37,356 INFO L85 PathProgramCache]: Analyzing trace with hash 271618282, now seen corresponding path program 1 times [2021-11-12 23:13:37,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:37,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298985802] [2021-11-12 23:13:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:37,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:37,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:37,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298985802] [2021-11-12 23:13:37,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298985802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:37,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:37,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:13:37,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408435960] [2021-11-12 23:13:37,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:37,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:13:37,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:13:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:37,426 INFO L87 Difference]: Start difference. First operand 589 states and 1534 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:37,531 INFO L93 Difference]: Finished difference Result 791 states and 1991 transitions. [2021-11-12 23:13:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:13:37,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2021-11-12 23:13:37,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:37,533 INFO L225 Difference]: With dead ends: 791 [2021-11-12 23:13:37,534 INFO L226 Difference]: Without dead ends: 490 [2021-11-12 23:13:37,534 INFO L932 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 [2021-11-12 23:13:37,535 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:37,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 21 Invalid, 99 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 93.05ms Time] [2021-11-12 23:13:37,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-12 23:13:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 464. [2021-11-12 23:13:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 2.3304535637149026) internal successors, (1079), 463 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1079 transitions. [2021-11-12 23:13:37,552 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1079 transitions. Word has length 23 [2021-11-12 23:13:37,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:37,552 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1079 transitions. [2021-11-12 23:13:37,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1079 transitions. [2021-11-12 23:13:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:13:37,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:37,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:37,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-12 23:13:37,555 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:37,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:37,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1035832766, now seen corresponding path program 1 times [2021-11-12 23:13:37,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:37,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466768432] [2021-11-12 23:13:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:37,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:37,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:37,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466768432] [2021-11-12 23:13:37,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466768432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:37,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:37,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 23:13:37,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440753506] [2021-11-12 23:13:37,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:37,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:13:37,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:37,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:13:37,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:13:37,706 INFO L87 Difference]: Start difference. First operand 464 states and 1079 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:37,843 INFO L93 Difference]: Finished difference Result 439 states and 1030 transitions. [2021-11-12 23:13:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:13:37,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-11-12 23:13:37,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:37,844 INFO L225 Difference]: With dead ends: 439 [2021-11-12 23:13:37,844 INFO L226 Difference]: Without dead ends: 92 [2021-11-12 23:13:37,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:13:37,845 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 78 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:37,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 28 Invalid, 141 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [16 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 123.68ms Time] [2021-11-12 23:13:37,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-12 23:13:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-12 23:13:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.1758241758241756) internal successors, (198), 91 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 198 transitions. [2021-11-12 23:13:37,849 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 198 transitions. Word has length 23 [2021-11-12 23:13:37,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:37,849 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 198 transitions. [2021-11-12 23:13:37,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 198 transitions. [2021-11-12 23:13:37,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 23:13:37,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:37,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:37,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-12 23:13:37,851 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash 751775604, now seen corresponding path program 1 times [2021-11-12 23:13:37,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:37,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418513954] [2021-11-12 23:13:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:37,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:13:38,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:13:38,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418513954] [2021-11-12 23:13:38,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418513954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:38,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:38,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 23:13:38,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953932591] [2021-11-12 23:13:38,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:38,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:13:38,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:13:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:13:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:13:38,264 INFO L87 Difference]: Start difference. First operand 92 states and 198 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:38,409 INFO L93 Difference]: Finished difference Result 137 states and 287 transitions. [2021-11-12 23:13:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:13:38,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 26 [2021-11-12 23:13:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:38,410 INFO L225 Difference]: With dead ends: 137 [2021-11-12 23:13:38,410 INFO L226 Difference]: Without dead ends: 83 [2021-11-12 23:13:38,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:13:38,411 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.47ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:38,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 32 Invalid, 150 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [9 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 139.47ms Time] [2021-11-12 23:13:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-12 23:13:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2021-11-12 23:13:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.9365079365079365) internal successors, (122), 63 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 122 transitions. [2021-11-12 23:13:38,414 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 122 transitions. Word has length 26 [2021-11-12 23:13:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:38,415 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 122 transitions. [2021-11-12 23:13:38,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:13:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 122 transitions. [2021-11-12 23:13:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 23:13:38,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:38,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:38,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-12 23:13:38,416 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:13:38,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1490567244, now seen corresponding path program 2 times [2021-11-12 23:13:38,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:38,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45843521] [2021-11-12 23:13:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:38,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:13:38,472 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:13:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:13:38,566 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:13:38,566 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:13:38,567 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-12 23:13:38,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-12 23:13:38,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 7 remaining) [2021-11-12 23:13:38,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 7 remaining) [2021-11-12 23:13:38,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 7 remaining) [2021-11-12 23:13:38,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 7 remaining) [2021-11-12 23:13:38,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-12 23:13:38,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-12 23:13:38,572 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:38,577 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-12 23:13:38,577 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:13:38,652 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:13:38,663 INFO L158 Benchmark]: Toolchain (without parser) took 29373.59ms. Allocated memory was 92.3MB in the beginning and 264.2MB in the end (delta: 172.0MB). Free memory was 51.2MB in the beginning and 91.4MB in the end (delta: -40.2MB). Peak memory consumption was 134.6MB. Max. memory is 16.1GB. [2021-11-12 23:13:38,665 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:13:38,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 749.51ms. Allocated memory was 92.3MB in the beginning and 119.5MB in the end (delta: 27.3MB). Free memory was 51.0MB in the beginning and 79.9MB in the end (delta: -28.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-12 23:13:38,666 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.97ms. Allocated memory is still 119.5MB. Free memory was 79.9MB in the beginning and 76.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:13:38,666 INFO L158 Benchmark]: Boogie Preprocessor took 81.91ms. Allocated memory is still 119.5MB. Free memory was 76.9MB in the beginning and 74.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:13:38,668 INFO L158 Benchmark]: RCFGBuilder took 1337.42ms. Allocated memory is still 119.5MB. Free memory was 74.4MB in the beginning and 67.8MB in the end (delta: 6.6MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2021-11-12 23:13:38,669 INFO L158 Benchmark]: TraceAbstraction took 27091.41ms. Allocated memory was 119.5MB in the beginning and 264.2MB in the end (delta: 144.7MB). Free memory was 67.3MB in the beginning and 91.4MB in the end (delta: -24.1MB). Peak memory consumption was 120.6MB. Max. memory is 16.1GB. [2021-11-12 23:13:38,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 749.51ms. Allocated memory was 92.3MB in the beginning and 119.5MB in the end (delta: 27.3MB). Free memory was 51.0MB in the beginning and 79.9MB in the end (delta: -28.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.97ms. Allocated memory is still 119.5MB. Free memory was 79.9MB in the beginning and 76.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.91ms. Allocated memory is still 119.5MB. Free memory was 76.9MB in the beginning and 74.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1337.42ms. Allocated memory is still 119.5MB. Free memory was 74.4MB in the beginning and 67.8MB in the end (delta: 6.6MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. * TraceAbstraction took 27091.41ms. Allocated memory was 119.5MB in the beginning and 264.2MB in the end (delta: 144.7MB). Free memory was 67.3MB in the beginning and 91.4MB in the end (delta: -24.1MB). Peak memory consumption was 120.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.6s, 148 PlacesBefore, 45 PlacesAfterwards, 137 TransitionsBefore, 32 TransitionsAfterwards, 3168 CoEnabledTransitionPairs, 6 FixpointIterations, 46 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 114 TotalNumberOfCompositions, 6552 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3143, positive: 2973, positive conditional: 0, positive unconditional: 2973, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1999, positive: 1912, positive conditional: 0, positive unconditional: 1912, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1999, positive: 1898, positive conditional: 0, positive unconditional: 1898, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 101, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1285, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 1225, negative conditional: 0, negative unconditional: 1225, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3143, positive: 1061, positive conditional: 0, positive unconditional: 1061, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 1999, unknown conditional: 0, unknown unconditional: 1999] , Statistics on independence cache: Total cache size (in pairs): 189, Positive cache size: 166, Positive conditional cache size: 0, Positive unconditional cache size: 166, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:13:38,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:13:41,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:13:41,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:13:41,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:13:41,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:13:41,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:13:41,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:13:41,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:13:41,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:13:41,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:13:41,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:13:41,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:13:41,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:13:41,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:13:41,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:13:41,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:13:41,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:13:41,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:13:41,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:13:41,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:13:41,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:13:41,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:13:41,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:13:41,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:13:41,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:13:41,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:13:41,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:13:41,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:13:41,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:13:41,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:13:41,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:13:41,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:13:41,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:13:41,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:13:41,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:13:41,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:13:41,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:13:41,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:13:41,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:13:41,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:13:41,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:13:41,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:13:41,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:13:41,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:13:41,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:13:41,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:13:41,304 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:13:41,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:13:41,304 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:13:41,304 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:13:41,304 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:13:41,305 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:13:41,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:13:41,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:13:41,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:13:41,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:13:41,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:13:41,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:13:41,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:13:41,308 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:13:41,309 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:13:41,309 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:13:41,309 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:13:41,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:13:41,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:13:41,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:13:41,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:13:41,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:13:41,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:13:41,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:13:41,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:13:41,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:13:41,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:13:41,311 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:13:41,311 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:13:41,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:13:41,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:13:41,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:13:41,313 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2021-11-12 23:13:41,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:13:41,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:13:41,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:13:41,760 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:13:41,761 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:13:41,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/pthread-wmm/mix046.opt.i [2021-11-12 23:13:41,840 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/data/ca64f8a89/b7a2cb4dad2143fbb950547b9bef32a8/FLAG474eb83bb [2021-11-12 23:13:42,542 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:13:42,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/sv-benchmarks/c/pthread-wmm/mix046.opt.i [2021-11-12 23:13:42,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/data/ca64f8a89/b7a2cb4dad2143fbb950547b9bef32a8/FLAG474eb83bb [2021-11-12 23:13:42,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/data/ca64f8a89/b7a2cb4dad2143fbb950547b9bef32a8 [2021-11-12 23:13:42,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:13:42,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:13:42,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:13:42,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:13:42,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:13:42,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:13:42" (1/1) ... [2021-11-12 23:13:42,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e13a3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:42, skipping insertion in model container [2021-11-12 23:13:42,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:13:42" (1/1) ... [2021-11-12 23:13:42,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:13:42,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:13:43,032 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_23fb2b13-65ba-4148-800f-6ec9dc692dc7/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2021-11-12 23:13:43,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:13:43,392 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:13:43,410 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_23fb2b13-65ba-4148-800f-6ec9dc692dc7/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2021-11-12 23:13:43,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:13:43,553 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:13:43,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43 WrapperNode [2021-11-12 23:13:43,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:13:43,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:13:43,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:13:43,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:13:43,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (1/1) ... [2021-11-12 23:13:43,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (1/1) ... [2021-11-12 23:13:43,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:13:43,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:13:43,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:13:43,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:13:43,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (1/1) ... [2021-11-12 23:13:43,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (1/1) ... [2021-11-12 23:13:43,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (1/1) ... [2021-11-12 23:13:43,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (1/1) ... [2021-11-12 23:13:43,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (1/1) ... [2021-11-12 23:13:43,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (1/1) ... [2021-11-12 23:13:43,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (1/1) ... [2021-11-12 23:13:43,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:13:43,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:13:43,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:13:43,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:13:43,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (1/1) ... [2021-11-12 23:13:43,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:13:43,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:13:43,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:13:43,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:13:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-12 23:13:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:13:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:13:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:13:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:13:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-12 23:13:43,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-12 23:13:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-12 23:13:43,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-12 23:13:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-12 23:13:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-12 23:13:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-11-12 23:13:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-11-12 23:13:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-12 23:13:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:13:43,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:13:43,843 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 23:13:45,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:13:45,022 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:13:45,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:45 BoogieIcfgContainer [2021-11-12 23:13:45,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:13:45,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:13:45,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:13:45,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:13:45,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:13:42" (1/3) ... [2021-11-12 23:13:45,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a0f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:45, skipping insertion in model container [2021-11-12 23:13:45,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:43" (2/3) ... [2021-11-12 23:13:45,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a0f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:45, skipping insertion in model container [2021-11-12 23:13:45,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:45" (3/3) ... [2021-11-12 23:13:45,034 INFO L111 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2021-11-12 23:13:45,039 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 23:13:45,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:13:45,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:13:45,040 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 23:13:45,094 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,094 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,095 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,095 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,095 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,096 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,096 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,096 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,117 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,117 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,118 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,119 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,119 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,119 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,119 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,119 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,120 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,120 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,120 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,121 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,121 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,121 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,122 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,122 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,123 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,123 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,123 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,124 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,124 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,124 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,124 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,124 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,124 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,125 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,125 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,125 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,125 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,125 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,125 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,126 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,126 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,126 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,126 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,126 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,126 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,126 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,127 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,128 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,128 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,128 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,128 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,128 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,129 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,129 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,129 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,129 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,129 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,129 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,130 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,130 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,130 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,130 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,130 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,130 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,131 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,131 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,131 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,131 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,132 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,132 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,132 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,132 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,132 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,133 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,133 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,133 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,133 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,134 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,134 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,135 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,136 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,138 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,138 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,138 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,143 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,143 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,144 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,144 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,145 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,145 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,151 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,151 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,152 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,152 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,152 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,152 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,152 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,152 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,153 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,153 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,154 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,155 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,155 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,155 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,156 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,156 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,156 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,156 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,156 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,156 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,157 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,157 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,157 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,157 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:13:45,157 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-12 23:13:45,225 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:13:45,235 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:13:45,235 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-12 23:13:45,251 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 23:13:45,263 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 138 transitions, 296 flow [2021-11-12 23:13:45,266 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 138 transitions, 296 flow [2021-11-12 23:13:45,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 296 flow [2021-11-12 23:13:45,326 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2021-11-12 23:13:45,326 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-12 23:13:45,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 2/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-11-12 23:13:45,335 INFO L116 LiptonReduction]: Number of co-enabled transitions 3168 [2021-11-12 23:14:05,214 INFO L131 LiptonReduction]: Checked pairs total: 7485 [2021-11-12 23:14:05,215 INFO L133 LiptonReduction]: Total number of compositions: 117 [2021-11-12 23:14:05,227 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 34 transitions, 88 flow [2021-11-12 23:14:05,419 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3162 states, 3159 states have (on average 4.074707185818297) internal successors, (12872), 3161 states have internal predecessors, (12872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:05,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 3162 states, 3159 states have (on average 4.074707185818297) internal successors, (12872), 3161 states have internal predecessors, (12872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:14:05,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:05,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:05,447 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:14:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:05,453 INFO L85 PathProgramCache]: Analyzing trace with hash -662496718, now seen corresponding path program 1 times [2021-11-12 23:14:05,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:05,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704808322] [2021-11-12 23:14:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:05,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:05,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:05,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:05,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:14:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:05,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:14:05,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:05,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:05,856 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:05,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704808322] [2021-11-12 23:14:05,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704808322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:05,857 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:05,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-11-12 23:14:05,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354000273] [2021-11-12 23:14:05,859 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:05,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:14:05,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:05,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:14:05,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:14:05,930 INFO L87 Difference]: Start difference. First operand has 3162 states, 3159 states have (on average 4.074707185818297) internal successors, (12872), 3161 states have internal predecessors, (12872), 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 4.5) 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) [2021-11-12 23:14:06,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:06,140 INFO L93 Difference]: Finished difference Result 2682 states and 10328 transitions. [2021-11-12 23:14:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:14:06,143 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 [2021-11-12 23:14:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:06,191 INFO L225 Difference]: With dead ends: 2682 [2021-11-12 23:14:06,191 INFO L226 Difference]: Without dead ends: 2602 [2021-11-12 23:14:06,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:14:06,196 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:06,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 10 Invalid, 40 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 96.36ms Time] [2021-11-12 23:14:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-12 23:14:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2602. [2021-11-12 23:14:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2601 states have (on average 3.869281045751634) internal successors, (10064), 2601 states have internal predecessors, (10064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 10064 transitions. [2021-11-12 23:14:06,397 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 10064 transitions. Word has length 9 [2021-11-12 23:14:06,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:06,398 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 10064 transitions. [2021-11-12 23:14:06,398 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) [2021-11-12 23:14:06,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 10064 transitions. [2021-11-12 23:14:06,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:14:06,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:06,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:06,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:06,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:06,617 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:14:06,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:06,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1062382976, now seen corresponding path program 1 times [2021-11-12 23:14:06,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:06,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737155593] [2021-11-12 23:14:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:06,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:06,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:06,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:06,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:14:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:06,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:14:06,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:06,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:07,112 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:07,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737155593] [2021-11-12 23:14:07,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737155593] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:07,113 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:07,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:14:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966693593] [2021-11-12 23:14:07,113 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:07,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:14:07,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:14:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:14:07,116 INFO L87 Difference]: Start difference. First operand 2602 states and 10064 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:07,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:07,396 INFO L93 Difference]: Finished difference Result 1558 states and 5133 transitions. [2021-11-12 23:14:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:14:07,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 [2021-11-12 23:14:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:07,407 INFO L225 Difference]: With dead ends: 1558 [2021-11-12 23:14:07,407 INFO L226 Difference]: Without dead ends: 1078 [2021-11-12 23:14:07,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:14:07,409 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 61 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.47ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 224.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:07,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 35 Invalid, 124 Unknown, 0 Unchecked, 2.47ms Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 224.86ms Time] [2021-11-12 23:14:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-12 23:14:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1078. [2021-11-12 23:14:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 3.0157845868152275) internal successors, (3248), 1077 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 3248 transitions. [2021-11-12 23:14:07,456 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 3248 transitions. Word has length 12 [2021-11-12 23:14:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:07,456 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 3248 transitions. [2021-11-12 23:14:07,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 3248 transitions. [2021-11-12 23:14:07,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:14:07,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:07,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:07,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:07,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:07,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:14:07,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2013949133, now seen corresponding path program 1 times [2021-11-12 23:14:07,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:07,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714746296] [2021-11-12 23:14:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:07,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:07,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:07,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:07,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:14:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:07,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:14:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:07,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:08,090 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:08,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714746296] [2021-11-12 23:14:08,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714746296] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:08,090 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:08,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:14:08,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596566587] [2021-11-12 23:14:08,091 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:08,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:14:08,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:14:08,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:14:08,093 INFO L87 Difference]: Start difference. First operand 1078 states and 3248 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:08,587 INFO L93 Difference]: Finished difference Result 785 states and 2411 transitions. [2021-11-12 23:14:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:14:08,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 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 18 [2021-11-12 23:14:08,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:08,594 INFO L225 Difference]: With dead ends: 785 [2021-11-12 23:14:08,594 INFO L226 Difference]: Without dead ends: 686 [2021-11-12 23:14:08,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:14:08,596 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 141 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 332.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.93ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 431.34ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:08,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 105 Invalid, 353 Unknown, 0 Unchecked, 3.93ms Time], IncrementalHoareTripleChecker [34 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 431.34ms Time] [2021-11-12 23:14:08,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-11-12 23:14:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2021-11-12 23:14:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 685 states have (on average 3.1124087591240874) internal successors, (2132), 685 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2132 transitions. [2021-11-12 23:14:08,622 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2132 transitions. Word has length 18 [2021-11-12 23:14:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:08,622 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 2132 transitions. [2021-11-12 23:14:08,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:08,622 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2132 transitions. [2021-11-12 23:14:08,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:14:08,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:08,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:08,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:08,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:08,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:14:08,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:08,843 INFO L85 PathProgramCache]: Analyzing trace with hash -808152357, now seen corresponding path program 1 times [2021-11-12 23:14:08,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:08,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185612636] [2021-11-12 23:14:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:08,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:08,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:08,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:14:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:09,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:14:09,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:09,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:09,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:09,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185612636] [2021-11-12 23:14:09,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185612636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:09,324 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:09,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:14:09,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554243851] [2021-11-12 23:14:09,325 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:09,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:14:09,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:14:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:14:09,327 INFO L87 Difference]: Start difference. First operand 686 states and 2132 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:09,614 INFO L93 Difference]: Finished difference Result 869 states and 2654 transitions. [2021-11-12 23:14:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:14:09,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-12 23:14:09,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:09,618 INFO L225 Difference]: With dead ends: 869 [2021-11-12 23:14:09,618 INFO L226 Difference]: Without dead ends: 356 [2021-11-12 23:14:09,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:14:09,620 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 254.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:09,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 42 Invalid, 194 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 254.82ms Time] [2021-11-12 23:14:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-12 23:14:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2021-11-12 23:14:09,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.7859154929577463) internal successors, (989), 355 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 989 transitions. [2021-11-12 23:14:09,640 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 989 transitions. Word has length 27 [2021-11-12 23:14:09,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:09,640 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 989 transitions. [2021-11-12 23:14:09,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 989 transitions. [2021-11-12 23:14:09,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:14:09,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:09,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:09,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:09,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:09,854 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:14:09,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:09,854 INFO L85 PathProgramCache]: Analyzing trace with hash 301979581, now seen corresponding path program 2 times [2021-11-12 23:14:09,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:09,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052544038] [2021-11-12 23:14:09,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:14:09,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:09,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:09,863 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:09,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:14:10,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 23:14:10,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:14:10,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:14:10,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:10,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:10,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:10,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052544038] [2021-11-12 23:14:10,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052544038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:10,327 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:10,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:14:10,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562826063] [2021-11-12 23:14:10,328 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:10,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:14:10,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:10,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:14:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:14:10,329 INFO L87 Difference]: Start difference. First operand 356 states and 989 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:10,532 INFO L93 Difference]: Finished difference Result 449 states and 1229 transitions. [2021-11-12 23:14:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:14:10,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 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 27 [2021-11-12 23:14:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:10,534 INFO L225 Difference]: With dead ends: 449 [2021-11-12 23:14:10,534 INFO L226 Difference]: Without dead ends: 185 [2021-11-12 23:14:10,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:14:10,535 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 176.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:10,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 134 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 176.93ms Time] [2021-11-12 23:14:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-12 23:14:10,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-11-12 23:14:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.472826086956522) internal successors, (455), 184 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 455 transitions. [2021-11-12 23:14:10,543 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 455 transitions. Word has length 27 [2021-11-12 23:14:10,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:10,544 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 455 transitions. [2021-11-12 23:14:10,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 455 transitions. [2021-11-12 23:14:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:14:10,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:10,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:10,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:10,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:10,759 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:14:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:10,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1969047803, now seen corresponding path program 3 times [2021-11-12 23:14:10,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:10,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057558889] [2021-11-12 23:14:10,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:14:10,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:10,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:10,762 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:10,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:14:10,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-12 23:14:10,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:14:10,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:14:10,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:11,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:11,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:11,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057558889] [2021-11-12 23:14:11,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057558889] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:11,127 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:11,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:14:11,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437322380] [2021-11-12 23:14:11,128 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:11,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:14:11,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:14:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:14:11,129 INFO L87 Difference]: Start difference. First operand 185 states and 455 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:11,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:11,300 INFO L93 Difference]: Finished difference Result 236 states and 574 transitions. [2021-11-12 23:14:11,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:14:11,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 27 [2021-11-12 23:14:11,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:11,302 INFO L225 Difference]: With dead ends: 236 [2021-11-12 23:14:11,302 INFO L226 Difference]: Without dead ends: 93 [2021-11-12 23:14:11,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:14:11,303 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 159.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:11,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 25 Invalid, 116 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 159.87ms Time] [2021-11-12 23:14:11,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-12 23:14:11,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-11-12 23:14:11,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.1630434782608696) internal successors, (199), 92 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 199 transitions. [2021-11-12 23:14:11,307 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 199 transitions. Word has length 27 [2021-11-12 23:14:11,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:11,308 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 199 transitions. [2021-11-12 23:14:11,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:11,308 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 199 transitions. [2021-11-12 23:14:11,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:14:11,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:11,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:11,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:11,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:11,509 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:14:11,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:11,510 INFO L85 PathProgramCache]: Analyzing trace with hash -650635645, now seen corresponding path program 4 times [2021-11-12 23:14:11,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:11,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328610826] [2021-11-12 23:14:11,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:14:11,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:11,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:11,512 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:11,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:14:11,681 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:14:11,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:14:11,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:14:11,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:12,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:13,209 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:13,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328610826] [2021-11-12 23:14:13,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328610826] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:13,210 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:13,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-12 23:14:13,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775730422] [2021-11-12 23:14:13,210 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:13,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 23:14:13,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 23:14:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:14:13,213 INFO L87 Difference]: Start difference. First operand 93 states and 199 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:13,545 INFO L93 Difference]: Finished difference Result 120 states and 254 transitions. [2021-11-12 23:14:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:14:13,546 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 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 27 [2021-11-12 23:14:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:13,546 INFO L225 Difference]: With dead ends: 120 [2021-11-12 23:14:13,547 INFO L226 Difference]: Without dead ends: 65 [2021-11-12 23:14:13,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:14:13,548 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 82 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:13,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 52 Invalid, 251 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [28 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 277.24ms Time] [2021-11-12 23:14:13,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-12 23:14:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-12 23:14:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.921875) internal successors, (123), 64 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 123 transitions. [2021-11-12 23:14:13,551 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 123 transitions. Word has length 27 [2021-11-12 23:14:13,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:13,551 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 123 transitions. [2021-11-12 23:14:13,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:14:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 123 transitions. [2021-11-12 23:14:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:14:13,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:13,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:13,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:13,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:13,761 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-12 23:14:13,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1143393907, now seen corresponding path program 5 times [2021-11-12 23:14:13,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:13,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390015346] [2021-11-12 23:14:13,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-12 23:14:13,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:13,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:13,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:13,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:14:13,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 23:14:13,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-12 23:14:13,994 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:14:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:14:14,233 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:14:14,234 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:14:14,235 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-12 23:14:14,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-12 23:14:14,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 7 remaining) [2021-11-12 23:14:14,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 7 remaining) [2021-11-12 23:14:14,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 7 remaining) [2021-11-12 23:14:14,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 7 remaining) [2021-11-12 23:14:14,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-12 23:14:14,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:14,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:14,454 INFO L732 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2021-11-12 23:14:14,458 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-12 23:14:14,459 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:14:14,516 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:14:14,518 INFO L158 Benchmark]: Toolchain (without parser) took 31770.78ms. Allocated memory was 69.2MB in the beginning and 174.1MB in the end (delta: 104.9MB). Free memory was 49.6MB in the beginning and 100.3MB in the end (delta: -50.7MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. [2021-11-12 23:14:14,520 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:14:14,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 802.63ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 39.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:14:14,521 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.95ms. Allocated memory is still 69.2MB. Free memory was 39.0MB in the beginning and 36.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:14:14,521 INFO L158 Benchmark]: Boogie Preprocessor took 74.24ms. Allocated memory is still 69.2MB. Free memory was 36.1MB in the beginning and 33.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:14:14,522 INFO L158 Benchmark]: RCFGBuilder took 1293.67ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 33.3MB in the beginning and 51.6MB in the end (delta: -18.4MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-11-12 23:14:14,522 INFO L158 Benchmark]: TraceAbstraction took 29491.16ms. Allocated memory was 100.7MB in the beginning and 174.1MB in the end (delta: 73.4MB). Free memory was 51.2MB in the beginning and 100.3MB in the end (delta: -49.1MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2021-11-12 23:14:14,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 802.63ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 39.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.95ms. Allocated memory is still 69.2MB. Free memory was 39.0MB in the beginning and 36.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.24ms. Allocated memory is still 69.2MB. Free memory was 36.1MB in the beginning and 33.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1293.67ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 33.3MB in the beginning and 51.6MB in the end (delta: -18.4MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * TraceAbstraction took 29491.16ms. Allocated memory was 100.7MB in the beginning and 174.1MB in the end (delta: 73.4MB). Free memory was 51.2MB in the beginning and 100.3MB in the end (delta: -49.1MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.9s, 149 PlacesBefore, 46 PlacesAfterwards, 138 TransitionsBefore, 34 TransitionsAfterwards, 3168 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 1 ChoiceCompositions, 117 TotalNumberOfCompositions, 7485 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4124, positive: 3932, positive conditional: 0, positive unconditional: 3932, negative: 192, negative conditional: 0, negative unconditional: 192, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2088, positive: 2030, positive conditional: 0, positive unconditional: 2030, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2088, positive: 2003, positive conditional: 0, positive unconditional: 2003, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 85, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1349, positive: 136, positive conditional: 0, positive unconditional: 136, negative: 1213, negative conditional: 0, negative unconditional: 1213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4124, positive: 1902, positive conditional: 0, positive unconditional: 1902, negative: 134, negative conditional: 0, negative unconditional: 134, unknown: 2088, unknown conditional: 0, unknown unconditional: 2088] , Statistics on independence cache: Total cache size (in pairs): 253, Positive cache size: 228, Positive conditional cache size: 0, Positive unconditional cache size: 228, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25 - 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:14:14,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fb2b13-65ba-4148-800f-6ec9dc692dc7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null