./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --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_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/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_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/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_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/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 c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:53:49,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:53:49,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:53:49,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:53:49,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:53:49,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:53:49,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:53:49,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:53:49,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:53:49,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:53:49,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:53:49,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:53:49,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:53:49,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:53:49,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:53:49,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:53:49,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:53:49,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:53:49,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:53:49,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:53:49,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:53:49,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:53:49,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:53:49,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:53:49,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:53:49,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:53:49,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:53:49,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:53:49,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:53:49,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:53:49,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:53:49,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:53:49,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:53:49,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:53:49,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:53:49,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:53:49,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:53:49,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:53:49,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:53:49,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:53:49,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:53:49,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:53:49,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:53:49,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:53:49,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:53:49,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:53:49,214 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:53:49,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:53:49,215 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:53:49,215 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:53:49,222 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:53:49,222 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:53:49,223 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:53:49,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:53:49,224 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:53:49,224 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:53:49,224 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:53:49,224 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:53:49,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:53:49,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:53:49,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:53:49,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:53:49,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:53:49,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:53:49,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:53:49,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:53:49,227 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:53:49,227 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:53:49,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:53:49,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:53:49,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:53:49,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:53:49,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:53:49,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:49,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:53:49,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:53:49,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:53:49,232 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:53:49,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:53:49,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:53:49,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:53:49,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:53:49,232 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_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2021-11-12 22:53:49,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:53:49,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:53:49,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:53:49,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:53:49,588 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:53:49,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2021-11-12 22:53:49,701 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/data/838757bdc/ca69ef4ce6d747a4995edbf9f4b2b5a4/FLAG689944d0c [2021-11-12 22:53:50,282 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:53:50,282 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2021-11-12 22:53:50,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/data/838757bdc/ca69ef4ce6d747a4995edbf9f4b2b5a4/FLAG689944d0c [2021-11-12 22:53:50,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/data/838757bdc/ca69ef4ce6d747a4995edbf9f4b2b5a4 [2021-11-12 22:53:50,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:53:50,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:53:50,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:50,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:53:50,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:53:50,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:50,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2873b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50, skipping insertion in model container [2021-11-12 22:53:50,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:50,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:53:50,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:53:50,888 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_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2021-11-12 22:53:50,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:50,901 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:53:50,923 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_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2021-11-12 22:53:50,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:50,941 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:53:50,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50 WrapperNode [2021-11-12 22:53:50,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:50,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:50,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:53:50,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:53:50,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:50,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:50,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:50,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:53:50,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:53:50,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:53:50,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:50,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:51,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:51,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:51,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:51,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:51,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:51,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:53:51,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:53:51,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:53:51,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:53:51,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:51,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:51,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:51,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:53:51,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:53:51,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-12 22:53:51,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-12 22:53:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-12 22:53:51,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-12 22:53:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:53:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:53:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:53:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:53:51,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:53:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:53:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:53:51,123 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 22:53:51,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:53:51,546 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:53:51,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:51 BoogieIcfgContainer [2021-11-12 22:53:51,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:53:51,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:53:51,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:53:51,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:53:51,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:53:50" (1/3) ... [2021-11-12 22:53:51,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80d2baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:51, skipping insertion in model container [2021-11-12 22:53:51,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50" (2/3) ... [2021-11-12 22:53:51,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80d2baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:51, skipping insertion in model container [2021-11-12 22:53:51,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:51" (3/3) ... [2021-11-12 22:53:51,560 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2021-11-12 22:53:51,577 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 22:53:51,582 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:53:51,582 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:53:51,583 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 22:53:51,620 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,620 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,620 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,621 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,621 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,621 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,622 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,622 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,622 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,622 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,623 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,623 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,623 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,623 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,624 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,624 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,624 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,624 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,625 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,625 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,626 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,626 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,627 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,627 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,627 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,628 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,628 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,628 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,628 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,629 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,629 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,629 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,629 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,630 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,630 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,630 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,630 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,630 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,631 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,631 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,639 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,639 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:53:51,643 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-12 22:53:51,702 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:53:51,711 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 22:53:51,711 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 22:53:51,734 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 22:53:51,750 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 102 transitions, 220 flow [2021-11-12 22:53:51,753 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 102 transitions, 220 flow [2021-11-12 22:53:51,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 220 flow [2021-11-12 22:53:51,823 INFO L129 PetriNetUnfolder]: 7/100 cut-off events. [2021-11-12 22:53:51,823 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-12 22:53:51,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 7/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2021-11-12 22:53:51,832 INFO L116 LiptonReduction]: Number of co-enabled transitions 728 [2021-11-12 22:53:56,063 INFO L131 LiptonReduction]: Checked pairs total: 796 [2021-11-12 22:53:56,063 INFO L133 LiptonReduction]: Total number of compositions: 108 [2021-11-12 22:53:56,073 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 44 flow [2021-11-12 22:53:56,098 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 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 22:53:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 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 22:53:56,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:53:56,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:56,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:56,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-12 22:53:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1798943744, now seen corresponding path program 1 times [2021-11-12 22:53:56,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:56,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402667814] [2021-11-12 22:53:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:56,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:56,743 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 22:53:56,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:56,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402667814] [2021-11-12 22:53:56,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402667814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:56,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:56,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:53:56,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997189146] [2021-11-12 22:53:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:56,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:53:56,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:53:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:53:56,802 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 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 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:56,961 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-11-12 22:53:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:53:56,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 22:53:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:56,975 INFO L225 Difference]: With dead ends: 25 [2021-11-12 22:53:56,976 INFO L226 Difference]: Without dead ends: 18 [2021-11-12 22:53:56,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:56,984 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:56,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 69.43ms Time] [2021-11-12 22:53:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-12 22:53:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-12 22:53:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 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 22:53:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-11-12 22:53:57,028 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 11 [2021-11-12 22:53:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:57,029 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-11-12 22:53:57,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-11-12 22:53:57,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:53:57,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:57,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:57,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:53:57,033 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-12 22:53:57,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:57,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1806093584, now seen corresponding path program 2 times [2021-11-12 22:53:57,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:57,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330563149] [2021-11-12 22:53:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:57,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:57,341 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 22:53:57,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:57,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330563149] [2021-11-12 22:53:57,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330563149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:57,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:57,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:53:57,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982774531] [2021-11-12 22:53:57,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:57,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:53:57,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:53:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:53:57,345 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:57,464 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2021-11-12 22:53:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:53:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 22:53:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:57,465 INFO L225 Difference]: With dead ends: 17 [2021-11-12 22:53:57,465 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:53:57,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:57,467 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.36ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:57,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 55.36ms Time] [2021-11-12 22:53:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:53:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:53:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:53:57,470 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-11-12 22:53:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:57,470 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:53:57,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:57,471 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:53:57,471 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:53:57,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-12 22:53:57,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-12 22:53:57,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-12 22:53:57,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:53:57,477 INFO L732 BasicCegarLoop]: Path program histogram: [2] [2021-11-12 22:53:57,479 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-12 22:53:57,479 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:53:57,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:53:57 BasicIcfg [2021-11-12 22:53:57,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:53:57,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:53:57,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:53:57,485 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:53:57,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:51" (3/4) ... [2021-11-12 22:53:57,489 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:53:57,496 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-12 22:53:57,496 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-12 22:53:57,502 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-12 22:53:57,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-12 22:53:57,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 22:53:57,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:53:57,546 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:53:57,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:53:57,551 INFO L158 Benchmark]: Toolchain (without parser) took 6947.40ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 64.8MB in the beginning and 93.0MB in the end (delta: -28.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:57,552 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory was 81.2MB in the beginning and 81.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:57,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.26ms. Allocated memory is still 107.0MB. Free memory was 64.6MB in the beginning and 81.0MB in the end (delta: -16.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-12 22:53:57,553 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.29ms. Allocated memory is still 107.0MB. Free memory was 81.0MB in the beginning and 79.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:53:57,553 INFO L158 Benchmark]: Boogie Preprocessor took 27.99ms. Allocated memory is still 107.0MB. Free memory was 79.2MB in the beginning and 78.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:53:57,554 INFO L158 Benchmark]: RCFGBuilder took 533.47ms. Allocated memory is still 107.0MB. Free memory was 78.0MB in the beginning and 66.3MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:53:57,554 INFO L158 Benchmark]: TraceAbstraction took 5932.09ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 65.9MB in the beginning and 96.1MB in the end (delta: -30.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:57,555 INFO L158 Benchmark]: Witness Printer took 66.14ms. Allocated memory is still 130.0MB. Free memory was 96.1MB in the beginning and 93.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:53:57,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory was 81.2MB in the beginning and 81.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.26ms. Allocated memory is still 107.0MB. Free memory was 64.6MB in the beginning and 81.0MB in the end (delta: -16.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.29ms. Allocated memory is still 107.0MB. Free memory was 81.0MB in the beginning and 79.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.99ms. Allocated memory is still 107.0MB. Free memory was 79.2MB in the beginning and 78.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 533.47ms. Allocated memory is still 107.0MB. Free memory was 78.0MB in the beginning and 66.3MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5932.09ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 65.9MB in the beginning and 96.1MB in the end (delta: -30.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 66.14ms. Allocated memory is still 130.0MB. Free memory was 96.1MB in the beginning and 93.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 102 PlacesBefore, 21 PlacesAfterwards, 102 TransitionsBefore, 14 TransitionsAfterwards, 728 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 10 ConcurrentYvCompositions, 7 ChoiceCompositions, 108 TotalNumberOfCompositions, 796 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 796, positive: 796, positive conditional: 0, positive unconditional: 796, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 621, positive: 621, positive conditional: 0, positive unconditional: 621, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 621, positive: 621, positive conditional: 0, positive unconditional: 621, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 796, positive: 175, positive conditional: 0, positive unconditional: 175, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 621, unknown conditional: 0, unknown unconditional: 621] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 124.79ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 101.99ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 62 mSolverCounterSat, 2.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-12 22:53:57,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1091914d-9efd-4aa1-a5f3-4609f5efe3ae/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: TRUE