./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe010_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe010_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0cdc4de0b080284406e5a223cc9cce4b369430ad26c4d0f5d169e90b4fc0e513 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:49:26,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:49:26,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:49:26,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:49:26,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:49:26,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:49:26,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:49:26,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:49:26,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:49:26,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:49:26,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:49:26,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:49:26,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:49:26,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:49:26,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:49:26,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:49:26,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:49:26,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:49:26,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:49:26,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:49:26,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:49:26,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:49:26,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:49:26,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:49:26,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:49:26,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:49:26,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:49:26,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:49:26,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:49:26,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:49:26,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:49:26,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:49:26,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:49:26,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:49:26,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:49:26,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:49:26,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:49:26,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:49:26,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:49:26,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:49:26,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:49:26,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:49:26,257 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:49:26,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:49:26,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:49:26,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:49:26,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:49:26,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:49:26,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:49:26,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:49:26,262 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:49:26,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:49:26,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:49:26,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:49:26,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:49:26,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:49:26,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:49:26,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:49:26,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:49:26,265 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:49:26,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:49:26,266 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:49:26,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:49:26,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:49:26,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:49:26,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:49:26,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:49:26,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:49:26,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:49:26,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:49:26,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:49:26,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:49:26,270 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:49:26,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:49:26,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:49:26,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:49:26,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdc4de0b080284406e5a223cc9cce4b369430ad26c4d0f5d169e90b4fc0e513 [2021-11-20 05:49:26,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:49:26,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:49:26,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:49:26,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:49:26,620 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:49:26,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/pthread-wmm/safe010_tso.i [2021-11-20 05:49:26,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/data/113cb402d/2876ba4e36424c44b052c2927113b314/FLAG3203456fa [2021-11-20 05:49:27,345 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:49:27,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/sv-benchmarks/c/pthread-wmm/safe010_tso.i [2021-11-20 05:49:27,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/data/113cb402d/2876ba4e36424c44b052c2927113b314/FLAG3203456fa [2021-11-20 05:49:27,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/data/113cb402d/2876ba4e36424c44b052c2927113b314 [2021-11-20 05:49:27,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:49:27,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:49:27,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:49:27,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:49:27,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:49:27,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:49:27" (1/1) ... [2021-11-20 05:49:27,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468d057a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:27, skipping insertion in model container [2021-11-20 05:49:27,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:49:27" (1/1) ... [2021-11-20 05:49:27,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:49:27,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:49:27,900 WARN L230 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_959bd288-17f9-474d-aa49-5aab5a6fac70/sv-benchmarks/c/pthread-wmm/safe010_tso.i[945,958] [2021-11-20 05:49:28,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:49:28,067 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:49:28,082 WARN L230 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_959bd288-17f9-474d-aa49-5aab5a6fac70/sv-benchmarks/c/pthread-wmm/safe010_tso.i[945,958] [2021-11-20 05:49:28,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:49:28,159 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:49:28,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28 WrapperNode [2021-11-20 05:49:28,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:49:28,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:49:28,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:49:28,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:49:28,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (1/1) ... [2021-11-20 05:49:28,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (1/1) ... [2021-11-20 05:49:28,207 INFO L137 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2021-11-20 05:49:28,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:49:28,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:49:28,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:49:28,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:49:28,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (1/1) ... [2021-11-20 05:49:28,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (1/1) ... [2021-11-20 05:49:28,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (1/1) ... [2021-11-20 05:49:28,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (1/1) ... [2021-11-20 05:49:28,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (1/1) ... [2021-11-20 05:49:28,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (1/1) ... [2021-11-20 05:49:28,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (1/1) ... [2021-11-20 05:49:28,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:49:28,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:49:28,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:49:28,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:49:28,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (1/1) ... [2021-11-20 05:49:28,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:49:28,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:49:28,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:49:28,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:49:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:49:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 05:49:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:49:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:49:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:49:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-20 05:49:28,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-20 05:49:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-20 05:49:28,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-20 05:49:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:49:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 05:49:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:49:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:49:28,334 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 05:49:28,440 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:49:28,442 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:49:28,598 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:49:28,605 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:49:28,620 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:49:28,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:49:28 BoogieIcfgContainer [2021-11-20 05:49:28,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:49:28,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:49:28,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:49:28,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:49:28,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:49:27" (1/3) ... [2021-11-20 05:49:28,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18230448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:49:28, skipping insertion in model container [2021-11-20 05:49:28,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:49:28" (2/3) ... [2021-11-20 05:49:28,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18230448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:49:28, skipping insertion in model container [2021-11-20 05:49:28,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:49:28" (3/3) ... [2021-11-20 05:49:28,633 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2021-11-20 05:49:28,639 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 05:49:28,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:49:28,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:49:28,640 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 05:49:28,671 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,671 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,671 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,672 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,672 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,672 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,672 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,673 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,673 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,674 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,674 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,674 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,675 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,675 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,675 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,675 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,676 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,676 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,676 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,676 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,677 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,677 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,678 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,678 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,681 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,682 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,682 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,682 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,686 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,686 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,686 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,687 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:49:28,688 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-20 05:49:28,743 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:49:28,752 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=PETRI_NET, 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 [2021-11-20 05:49:28,754 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 05:49:28,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 74 transitions, 158 flow [2021-11-20 05:49:28,832 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-11-20 05:49:28,832 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 05:49:28,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2021-11-20 05:49:28,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 74 transitions, 158 flow [2021-11-20 05:49:28,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 60 transitions, 126 flow [2021-11-20 05:49:28,859 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-11-20 05:49:28,859 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 05:49:28,859 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:49:28,860 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:49:28,861 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:49:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:28,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1233265517, now seen corresponding path program 1 times [2021-11-20 05:49:28,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:49:28,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156380736] [2021-11-20 05:49:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:28,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:49:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:49:29,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:49:29,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156380736] [2021-11-20 05:49:29,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156380736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:49:29,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:49:29,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:49:29,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352781926] [2021-11-20 05:49:29,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:49:29,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:49:29,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:49:29,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:49:29,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:49:29,439 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-11-20 05:49:29,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2021-11-20 05:49:29,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:49:29,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-11-20 05:49:29,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:49:29,663 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2021-11-20 05:49:29,664 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 05:49:29,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 75 events. 3/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 4/78 useless extension candidates. Maximal degree in co-relation 72. Up to 7 conditions per place. [2021-11-20 05:49:29,666 INFO L132 encePairwiseOnDemand]: 67/74 looper letters, 8 selfloop transitions, 2 changer transitions 11/69 dead transitions. [2021-11-20 05:49:29,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 69 transitions, 184 flow [2021-11-20 05:49:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:49:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 05:49:29,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 564 transitions. [2021-11-20 05:49:29,691 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8468468468468469 [2021-11-20 05:49:29,696 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 564 transitions. [2021-11-20 05:49:29,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 564 transitions. [2021-11-20 05:49:29,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:49:29,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 564 transitions. [2021-11-20 05:49:29,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.666666666666664) internal successors, (564), 9 states have internal predecessors, (564), 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) [2021-11-20 05:49:29,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-11-20 05:49:29,722 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-11-20 05:49:29,724 INFO L186 Difference]: Start difference. First operand has 66 places, 60 transitions, 126 flow. Second operand 9 states and 564 transitions. [2021-11-20 05:49:29,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 69 transitions, 184 flow [2021-11-20 05:49:29,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 69 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 05:49:29,733 INFO L242 Difference]: Finished difference. Result has 79 places, 58 transitions, 140 flow [2021-11-20 05:49:29,737 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=140, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2021-11-20 05:49:29,741 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2021-11-20 05:49:29,744 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 140 flow [2021-11-20 05:49:29,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2021-11-20 05:49:29,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:49:29,745 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:49:29,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:49:29,746 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:49:29,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1084512876, now seen corresponding path program 1 times [2021-11-20 05:49:29,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:49:29,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839565505] [2021-11-20 05:49:29,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:29,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:49:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:49:30,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:49:30,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839565505] [2021-11-20 05:49:30,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839565505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:49:30,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:49:30,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:49:30,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817825144] [2021-11-20 05:49:30,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:49:30,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:49:30,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:49:30,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:49:30,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:49:30,044 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 74 [2021-11-20 05:49:30,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 58 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 56.714285714285715) internal successors, (397), 7 states have internal predecessors, (397), 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) [2021-11-20 05:49:30,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:49:30,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 74 [2021-11-20 05:49:30,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:49:30,466 INFO L129 PetriNetUnfolder]: 69/273 cut-off events. [2021-11-20 05:49:30,466 INFO L130 PetriNetUnfolder]: For 104/117 co-relation queries the response was YES. [2021-11-20 05:49:30,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 273 events. 69/273 cut-off events. For 104/117 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1140 event pairs, 0 based on Foata normal form. 10/279 useless extension candidates. Maximal degree in co-relation 502. Up to 37 conditions per place. [2021-11-20 05:49:30,470 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 27 selfloop transitions, 7 changer transitions 37/114 dead transitions. [2021-11-20 05:49:30,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 478 flow [2021-11-20 05:49:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 05:49:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 05:49:30,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1010 transitions. [2021-11-20 05:49:30,477 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8028616852146264 [2021-11-20 05:49:30,477 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1010 transitions. [2021-11-20 05:49:30,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1010 transitions. [2021-11-20 05:49:30,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:49:30,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1010 transitions. [2021-11-20 05:49:30,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.411764705882355) internal successors, (1010), 17 states have internal predecessors, (1010), 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) [2021-11-20 05:49:30,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 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) [2021-11-20 05:49:30,492 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 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) [2021-11-20 05:49:30,492 INFO L186 Difference]: Start difference. First operand has 79 places, 58 transitions, 140 flow. Second operand 17 states and 1010 transitions. [2021-11-20 05:49:30,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 114 transitions, 478 flow [2021-11-20 05:49:30,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 390 flow, removed 40 selfloop flow, removed 8 redundant places. [2021-11-20 05:49:30,501 INFO L242 Difference]: Finished difference. Result has 95 places, 61 transitions, 187 flow [2021-11-20 05:49:30,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=187, PETRI_PLACES=95, PETRI_TRANSITIONS=61} [2021-11-20 05:49:30,502 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2021-11-20 05:49:30,503 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 61 transitions, 187 flow [2021-11-20 05:49:30,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.714285714285715) internal successors, (397), 7 states have internal predecessors, (397), 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) [2021-11-20 05:49:30,503 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:49:30,504 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:49:30,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:49:30,504 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:49:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2004569707, now seen corresponding path program 1 times [2021-11-20 05:49:30,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:49:30,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442756759] [2021-11-20 05:49:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:30,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:49:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:49:30,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:49:30,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442756759] [2021-11-20 05:49:30,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442756759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:49:30,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:49:30,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:49:30,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948550293] [2021-11-20 05:49:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:49:30,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:49:30,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:49:30,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:49:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:49:30,670 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 74 [2021-11-20 05:49:30,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 61 transitions, 187 flow. Second operand has 8 states, 8 states have (on average 56.625) internal successors, (453), 8 states have internal predecessors, (453), 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) [2021-11-20 05:49:30,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:49:30,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 74 [2021-11-20 05:49:30,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:49:30,876 INFO L129 PetriNetUnfolder]: 25/161 cut-off events. [2021-11-20 05:49:30,877 INFO L130 PetriNetUnfolder]: For 285/313 co-relation queries the response was YES. [2021-11-20 05:49:30,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 161 events. 25/161 cut-off events. For 285/313 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 506 event pairs, 1 based on Foata normal form. 8/165 useless extension candidates. Maximal degree in co-relation 389. Up to 20 conditions per place. [2021-11-20 05:49:30,882 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 15 selfloop transitions, 5 changer transitions 25/88 dead transitions. [2021-11-20 05:49:30,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 449 flow [2021-11-20 05:49:30,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:49:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:49:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2021-11-20 05:49:30,886 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7948402948402948 [2021-11-20 05:49:30,887 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 647 transitions. [2021-11-20 05:49:30,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 647 transitions. [2021-11-20 05:49:30,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:49:30,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 647 transitions. [2021-11-20 05:49:30,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.81818181818182) internal successors, (647), 11 states have internal predecessors, (647), 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) [2021-11-20 05:49:30,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2021-11-20 05:49:30,895 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2021-11-20 05:49:30,895 INFO L186 Difference]: Start difference. First operand has 95 places, 61 transitions, 187 flow. Second operand 11 states and 647 transitions. [2021-11-20 05:49:30,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 449 flow [2021-11-20 05:49:30,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 358 flow, removed 40 selfloop flow, removed 13 redundant places. [2021-11-20 05:49:30,907 INFO L242 Difference]: Finished difference. Result has 88 places, 58 transitions, 176 flow [2021-11-20 05:49:30,907 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=176, PETRI_PLACES=88, PETRI_TRANSITIONS=58} [2021-11-20 05:49:30,910 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2021-11-20 05:49:30,910 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 58 transitions, 176 flow [2021-11-20 05:49:30,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 56.625) internal successors, (453), 8 states have internal predecessors, (453), 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) [2021-11-20 05:49:30,911 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:49:30,912 INFO L254 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:49:30,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:49:30,912 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:49:30,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:30,916 INFO L85 PathProgramCache]: Analyzing trace with hash 680943459, now seen corresponding path program 1 times [2021-11-20 05:49:30,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:49:30,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765264013] [2021-11-20 05:49:30,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:30,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:49:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:49:31,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:49:31,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765264013] [2021-11-20 05:49:31,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765264013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:49:31,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:49:31,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:49:31,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226294081] [2021-11-20 05:49:31,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:49:31,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:49:31,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:49:31,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:49:31,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:49:31,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 74 [2021-11-20 05:49:31,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 58 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 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) [2021-11-20 05:49:31,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:49:31,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 74 [2021-11-20 05:49:31,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:49:31,190 INFO L129 PetriNetUnfolder]: 25/134 cut-off events. [2021-11-20 05:49:31,190 INFO L130 PetriNetUnfolder]: For 33/34 co-relation queries the response was YES. [2021-11-20 05:49:31,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 134 events. 25/134 cut-off events. For 33/34 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 417 event pairs, 0 based on Foata normal form. 4/137 useless extension candidates. Maximal degree in co-relation 229. Up to 27 conditions per place. [2021-11-20 05:49:31,192 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 8 selfloop transitions, 4 changer transitions 19/78 dead transitions. [2021-11-20 05:49:31,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 78 transitions, 280 flow [2021-11-20 05:49:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:49:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 05:49:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 564 transitions. [2021-11-20 05:49:31,195 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8468468468468469 [2021-11-20 05:49:31,196 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 564 transitions. [2021-11-20 05:49:31,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 564 transitions. [2021-11-20 05:49:31,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:49:31,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 564 transitions. [2021-11-20 05:49:31,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.666666666666664) internal successors, (564), 9 states have internal predecessors, (564), 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) [2021-11-20 05:49:31,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-11-20 05:49:31,201 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-11-20 05:49:31,202 INFO L186 Difference]: Start difference. First operand has 88 places, 58 transitions, 176 flow. Second operand 9 states and 564 transitions. [2021-11-20 05:49:31,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 78 transitions, 280 flow [2021-11-20 05:49:31,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 238 flow, removed 10 selfloop flow, removed 15 redundant places. [2021-11-20 05:49:31,206 INFO L242 Difference]: Finished difference. Result has 81 places, 58 transitions, 164 flow [2021-11-20 05:49:31,206 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=164, PETRI_PLACES=81, PETRI_TRANSITIONS=58} [2021-11-20 05:49:31,207 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2021-11-20 05:49:31,208 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 58 transitions, 164 flow [2021-11-20 05:49:31,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 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) [2021-11-20 05:49:31,208 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:49:31,208 INFO L254 CegarLoopForPetriNet]: 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, 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] [2021-11-20 05:49:31,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:49:31,209 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:49:31,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:31,210 INFO L85 PathProgramCache]: Analyzing trace with hash -441842786, now seen corresponding path program 1 times [2021-11-20 05:49:31,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:49:31,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856812512] [2021-11-20 05:49:31,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:31,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:49:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:49:31,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:49:31,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856812512] [2021-11-20 05:49:31,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856812512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:49:31,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:49:31,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:49:31,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833264992] [2021-11-20 05:49:31,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:49:31,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:49:31,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:49:31,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:49:31,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:49:31,369 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 74 [2021-11-20 05:49:31,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 58 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 60.42857142857143) internal successors, (423), 7 states have internal predecessors, (423), 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) [2021-11-20 05:49:31,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:49:31,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 74 [2021-11-20 05:49:31,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:49:31,505 INFO L129 PetriNetUnfolder]: 4/69 cut-off events. [2021-11-20 05:49:31,505 INFO L130 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2021-11-20 05:49:31,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 69 events. 4/69 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 138. Up to 11 conditions per place. [2021-11-20 05:49:31,506 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2021-11-20 05:49:31,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 61 transitions, 241 flow [2021-11-20 05:49:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:49:31,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:49:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 613 transitions. [2021-11-20 05:49:31,510 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8283783783783784 [2021-11-20 05:49:31,510 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 613 transitions. [2021-11-20 05:49:31,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 613 transitions. [2021-11-20 05:49:31,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:49:31,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 613 transitions. [2021-11-20 05:49:31,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 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) [2021-11-20 05:49:31,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-11-20 05:49:31,525 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-11-20 05:49:31,525 INFO L186 Difference]: Start difference. First operand has 81 places, 58 transitions, 164 flow. Second operand 10 states and 613 transitions. [2021-11-20 05:49:31,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 61 transitions, 241 flow [2021-11-20 05:49:31,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 206 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-11-20 05:49:31,528 INFO L242 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2021-11-20 05:49:31,528 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2021-11-20 05:49:31,530 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2021-11-20 05:49:31,530 INFO L470 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2021-11-20 05:49:31,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.42857142857143) internal successors, (423), 7 states have internal predecessors, (423), 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) [2021-11-20 05:49:31,534 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-20 05:49:31,534 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-20 05:49:31,535 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-20 05:49:31,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:49:31,540 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-20 05:49:31,543 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-20 05:49:31,543 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:49:31,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:49:31 BasicIcfg [2021-11-20 05:49:31,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:49:31,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:49:31,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:49:31,550 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:49:31,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:49:28" (3/4) ... [2021-11-20 05:49:31,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 05:49:31,562 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-20 05:49:31,562 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-20 05:49:31,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-20 05:49:31,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 05:49:31,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 05:49:31,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 05:49:31,613 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 05:49:31,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:49:31,614 INFO L158 Benchmark]: Toolchain (without parser) took 4036.03ms. Allocated memory was 81.8MB in the beginning and 130.0MB in the end (delta: 48.2MB). Free memory was 46.3MB in the beginning and 98.8MB in the end (delta: -52.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:49:31,615 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 81.8MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:49:31,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.72ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 46.0MB in the beginning and 71.7MB in the end (delta: -25.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:49:31,616 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.99ms. Allocated memory is still 107.0MB. Free memory was 71.7MB in the beginning and 69.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:49:31,616 INFO L158 Benchmark]: Boogie Preprocessor took 27.83ms. Allocated memory is still 107.0MB. Free memory was 69.6MB in the beginning and 68.7MB in the end (delta: 965.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:49:31,617 INFO L158 Benchmark]: RCFGBuilder took 386.26ms. Allocated memory is still 107.0MB. Free memory was 68.7MB in the beginning and 57.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 05:49:31,618 INFO L158 Benchmark]: TraceAbstraction took 2923.93ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 56.6MB in the beginning and 102.0MB in the end (delta: -45.4MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2021-11-20 05:49:31,618 INFO L158 Benchmark]: Witness Printer took 63.73ms. Allocated memory is still 130.0MB. Free memory was 102.0MB in the beginning and 98.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:49:31,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 81.8MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.72ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 46.0MB in the beginning and 71.7MB in the end (delta: -25.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.99ms. Allocated memory is still 107.0MB. Free memory was 71.7MB in the beginning and 69.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.83ms. Allocated memory is still 107.0MB. Free memory was 69.6MB in the beginning and 68.7MB in the end (delta: 965.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 386.26ms. Allocated memory is still 107.0MB. Free memory was 68.7MB in the beginning and 57.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2923.93ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 56.6MB in the beginning and 102.0MB in the end (delta: -45.4MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * Witness Printer took 63.73ms. Allocated memory is still 130.0MB. Free memory was 102.0MB in the beginning and 98.8MB 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: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 227 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 212 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 211 IncrementalHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 53 mSDtfsCounter, 211 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=187occurred in iteration=2, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 247 NumberOfCodeBlocks, 247 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 242 ConstructedInterpolants, 0 QuantifiedInterpolants, 844 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2021-11-20 05:49:31,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959bd288-17f9-474d-aa49-5aab5a6fac70/bin/uautomizer-DQz5hQGWxF/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