./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc --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 cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:51:30,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:51:30,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:51:30,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:51:30,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:51:30,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:51:30,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:51:30,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:51:30,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:51:30,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:51:30,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:51:30,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:51:30,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:51:30,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:51:30,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:51:30,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:51:30,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:51:30,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:51:30,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:51:30,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:51:30,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:51:30,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:51:30,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:51:30,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:51:30,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:51:30,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:51:30,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:51:30,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:51:30,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:51:30,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:51:30,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:51:30,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:51:30,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:51:30,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:51:30,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:51:30,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:51:30,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:51:30,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:51:30,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:51:30,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:51:30,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:51:30,234 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:51:30,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:51:30,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:51:30,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:51:30,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:51:30,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:51:30,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:51:30,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:51:30,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:51:30,281 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:51:30,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:51:30,283 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:51:30,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:51:30,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:51:30,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:51:30,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:51:30,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:51:30,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:51:30,284 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:51:30,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:51:30,285 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:51:30,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:51:30,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:51:30,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:51:30,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:51:30,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:51:30,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:51:30,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:51:30,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:51:30,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:51:30,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:51:30,287 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:51:30,287 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:51:30,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:51:30,288 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_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 [2022-11-02 20:51:30,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:51:30,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:51:30,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:51:30,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:51:30,589 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:51:30,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/safe003_tso.i [2022-11-02 20:51:30,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/data/d30a82eb6/921e925ab08a4429ac3aa05f621d021e/FLAGca84b770f [2022-11-02 20:51:31,265 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:51:31,266 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/sv-benchmarks/c/pthread-wmm/safe003_tso.i [2022-11-02 20:51:31,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/data/d30a82eb6/921e925ab08a4429ac3aa05f621d021e/FLAGca84b770f [2022-11-02 20:51:31,553 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/data/d30a82eb6/921e925ab08a4429ac3aa05f621d021e [2022-11-02 20:51:31,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:51:31,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:51:31,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:31,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:51:31,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:51:31,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dec8106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31, skipping insertion in model container [2022-11-02 20:51:31,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:51:31,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:51:31,797 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_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2022-11-02 20:51:31,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:31,952 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:51:31,967 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_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2022-11-02 20:51:32,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:32,065 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:51:32,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32 WrapperNode [2022-11-02 20:51:32,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:32,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:32,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:51:32,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:51:32,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,141 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-02 20:51:32,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:32,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:51:32,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:51:32,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:51:32,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,187 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:51:32,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:51:32,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:51:32,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:51:32,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (1/1) ... [2022-11-02 20:51:32,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:51:32,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:32,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:32,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:51:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:51:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:51:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:51:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:51:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:51:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:51:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:51:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:51:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:51:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-02 20:51:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-02 20:51:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:51:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:51:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:51:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:51:32,292 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:51:32,490 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:51:32,492 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:51:32,715 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:51:32,726 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:51:32,726 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:51:32,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:32 BoogieIcfgContainer [2022-11-02 20:51:32,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:51:32,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:51:32,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:51:32,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:51:32,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:51:31" (1/3) ... [2022-11-02 20:51:32,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a21fef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:32, skipping insertion in model container [2022-11-02 20:51:32,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:32" (2/3) ... [2022-11-02 20:51:32,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a21fef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:32, skipping insertion in model container [2022-11-02 20:51:32,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:32" (3/3) ... [2022-11-02 20:51:32,739 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2022-11-02 20:51:32,754 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:51:32,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:51:32,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:51:32,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:51:32,858 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:51:32,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-11-02 20:51:32,999 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-02 20:51:33,000 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:51:33,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-02 20:51:33,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-11-02 20:51:33,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-11-02 20:51:33,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:51:33,043 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23a632ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:51:33,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:51:33,090 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-11-02 20:51:33,090 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:51:33,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:33,091 INFO L208 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, 1, 1, 1] [2022-11-02 20:51:33,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:51:33,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:33,099 INFO L85 PathProgramCache]: Analyzing trace with hash -669003802, now seen corresponding path program 1 times [2022-11-02 20:51:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:33,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990124758] [2022-11-02 20:51:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:33,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:34,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:34,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990124758] [2022-11-02 20:51:34,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990124758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:34,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:34,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:51:34,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708829454] [2022-11-02 20:51:34,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:34,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:51:34,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:34,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:34,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:34,318 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-02 20:51:34,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2022-11-02 20:51:34,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:34,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-02 20:51:34,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:34,813 INFO L130 PetriNetUnfolder]: 378/982 cut-off events. [2022-11-02 20:51:34,813 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-02 20:51:34,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 982 events. 378/982 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5979 event pairs, 38 based on Foata normal form. 33/988 useless extension candidates. Maximal degree in co-relation 1616. Up to 212 conditions per place. [2022-11-02 20:51:34,823 INFO L137 encePairwiseOnDemand]: 81/92 looper letters, 23 selfloop transitions, 6 changer transitions 37/122 dead transitions. [2022-11-02 20:51:34,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 122 transitions, 391 flow [2022-11-02 20:51:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:51:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:51:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 700 transitions. [2022-11-02 20:51:34,839 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8454106280193237 [2022-11-02 20:51:34,840 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 700 transitions. [2022-11-02 20:51:34,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 700 transitions. [2022-11-02 20:51:34,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:34,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 700 transitions. [2022-11-02 20:51:34,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 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) [2022-11-02 20:51:34,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-11-02 20:51:34,860 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-11-02 20:51:34,862 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 700 transitions. [2022-11-02 20:51:34,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 122 transitions, 391 flow [2022-11-02 20:51:34,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:51:34,870 INFO L231 Difference]: Finished difference. Result has 97 places, 79 transitions, 242 flow [2022-11-02 20:51:34,873 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=242, PETRI_PLACES=97, PETRI_TRANSITIONS=79} [2022-11-02 20:51:34,876 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2022-11-02 20:51:34,877 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 79 transitions, 242 flow [2022-11-02 20:51:34,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2022-11-02 20:51:34,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:34,878 INFO L208 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, 1, 1, 1, 1, 1] [2022-11-02 20:51:34,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:51:34,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:51:34,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:34,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1081069657, now seen corresponding path program 1 times [2022-11-02 20:51:34,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:34,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158740157] [2022-11-02 20:51:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:34,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:35,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:35,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158740157] [2022-11-02 20:51:35,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158740157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:35,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:35,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:51:35,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11874021] [2022-11-02 20:51:35,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:35,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:51:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:35,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:51:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:51:35,143 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-02 20:51:35,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 79 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-11-02 20:51:35,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:35,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-02 20:51:35,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:35,515 INFO L130 PetriNetUnfolder]: 177/583 cut-off events. [2022-11-02 20:51:35,516 INFO L131 PetriNetUnfolder]: For 975/1287 co-relation queries the response was YES. [2022-11-02 20:51:35,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 583 events. 177/583 cut-off events. For 975/1287 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3146 event pairs, 10 based on Foata normal form. 23/588 useless extension candidates. Maximal degree in co-relation 1662. Up to 136 conditions per place. [2022-11-02 20:51:35,522 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 24 selfloop transitions, 7 changer transitions 54/141 dead transitions. [2022-11-02 20:51:35,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 850 flow [2022-11-02 20:51:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:51:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:51:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2022-11-02 20:51:35,525 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8177257525083612 [2022-11-02 20:51:35,525 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2022-11-02 20:51:35,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2022-11-02 20:51:35,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:35,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2022-11-02 20:51:35,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 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) [2022-11-02 20:51:35,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-11-02 20:51:35,536 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-11-02 20:51:35,536 INFO L175 Difference]: Start difference. First operand has 97 places, 79 transitions, 242 flow. Second operand 13 states and 978 transitions. [2022-11-02 20:51:35,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 850 flow [2022-11-02 20:51:35,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 141 transitions, 776 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-02 20:51:35,552 INFO L231 Difference]: Finished difference. Result has 113 places, 82 transitions, 312 flow [2022-11-02 20:51:35,553 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=312, PETRI_PLACES=113, PETRI_TRANSITIONS=82} [2022-11-02 20:51:35,553 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-11-02 20:51:35,554 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 82 transitions, 312 flow [2022-11-02 20:51:35,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-11-02 20:51:35,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:35,554 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:35,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:51:35,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:51:35,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash 115385248, now seen corresponding path program 1 times [2022-11-02 20:51:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:35,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283454210] [2022-11-02 20:51:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:35,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:35,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:35,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283454210] [2022-11-02 20:51:35,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283454210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:35,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:35,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:51:35,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441769162] [2022-11-02 20:51:35,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:35,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:51:35,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:35,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:35,842 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2022-11-02 20:51:35,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 82 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2022-11-02 20:51:35,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:35,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2022-11-02 20:51:35,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:36,009 INFO L130 PetriNetUnfolder]: 30/222 cut-off events. [2022-11-02 20:51:36,009 INFO L131 PetriNetUnfolder]: For 577/652 co-relation queries the response was YES. [2022-11-02 20:51:36,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 222 events. 30/222 cut-off events. For 577/652 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 828 event pairs, 0 based on Foata normal form. 22/238 useless extension candidates. Maximal degree in co-relation 559. Up to 35 conditions per place. [2022-11-02 20:51:36,012 INFO L137 encePairwiseOnDemand]: 86/92 looper letters, 10 selfloop transitions, 4 changer transitions 10/93 dead transitions. [2022-11-02 20:51:36,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 93 transitions, 452 flow [2022-11-02 20:51:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:51:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:51:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 717 transitions. [2022-11-02 20:51:36,016 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8659420289855072 [2022-11-02 20:51:36,016 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 717 transitions. [2022-11-02 20:51:36,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 717 transitions. [2022-11-02 20:51:36,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:36,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 717 transitions. [2022-11-02 20:51:36,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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) [2022-11-02 20:51:36,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-11-02 20:51:36,022 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-11-02 20:51:36,022 INFO L175 Difference]: Start difference. First operand has 113 places, 82 transitions, 312 flow. Second operand 9 states and 717 transitions. [2022-11-02 20:51:36,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 93 transitions, 452 flow [2022-11-02 20:51:36,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 93 transitions, 381 flow, removed 34 selfloop flow, removed 4 redundant places. [2022-11-02 20:51:36,028 INFO L231 Difference]: Finished difference. Result has 115 places, 82 transitions, 305 flow [2022-11-02 20:51:36,029 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=305, PETRI_PLACES=115, PETRI_TRANSITIONS=82} [2022-11-02 20:51:36,030 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 31 predicate places. [2022-11-02 20:51:36,030 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 82 transitions, 305 flow [2022-11-02 20:51:36,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2022-11-02 20:51:36,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:36,031 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:36,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:51:36,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:51:36,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2042157984, now seen corresponding path program 1 times [2022-11-02 20:51:36,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:36,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472117357] [2022-11-02 20:51:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:36,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:36,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:36,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472117357] [2022-11-02 20:51:36,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472117357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:36,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:36,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:51:36,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47568130] [2022-11-02 20:51:36,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:36,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:51:36,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:36,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:51:36,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:51:36,244 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-11-02 20:51:36,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 82 transitions, 305 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-11-02 20:51:36,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:36,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-11-02 20:51:36,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:36,672 INFO L130 PetriNetUnfolder]: 125/509 cut-off events. [2022-11-02 20:51:36,672 INFO L131 PetriNetUnfolder]: For 1050/1551 co-relation queries the response was YES. [2022-11-02 20:51:36,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 509 events. 125/509 cut-off events. For 1050/1551 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2708 event pairs, 3 based on Foata normal form. 11/507 useless extension candidates. Maximal degree in co-relation 1391. Up to 88 conditions per place. [2022-11-02 20:51:36,676 INFO L137 encePairwiseOnDemand]: 80/92 looper letters, 40 selfloop transitions, 14 changer transitions 49/157 dead transitions. [2022-11-02 20:51:36,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 157 transitions, 1026 flow [2022-11-02 20:51:36,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:51:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:51:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1246 transitions. [2022-11-02 20:51:36,681 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7966751918158568 [2022-11-02 20:51:36,681 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1246 transitions. [2022-11-02 20:51:36,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1246 transitions. [2022-11-02 20:51:36,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:36,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1246 transitions. [2022-11-02 20:51:36,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.29411764705883) internal successors, (1246), 17 states have internal predecessors, (1246), 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) [2022-11-02 20:51:36,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 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) [2022-11-02 20:51:36,688 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 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) [2022-11-02 20:51:36,688 INFO L175 Difference]: Start difference. First operand has 115 places, 82 transitions, 305 flow. Second operand 17 states and 1246 transitions. [2022-11-02 20:51:36,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 157 transitions, 1026 flow [2022-11-02 20:51:36,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 157 transitions, 850 flow, removed 81 selfloop flow, removed 17 redundant places. [2022-11-02 20:51:36,696 INFO L231 Difference]: Finished difference. Result has 124 places, 90 transitions, 398 flow [2022-11-02 20:51:36,696 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=398, PETRI_PLACES=124, PETRI_TRANSITIONS=90} [2022-11-02 20:51:36,697 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2022-11-02 20:51:36,697 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 90 transitions, 398 flow [2022-11-02 20:51:36,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-11-02 20:51:36,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:36,698 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:36,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:51:36,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:51:36,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:36,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1248140111, now seen corresponding path program 1 times [2022-11-02 20:51:36,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:36,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186253459] [2022-11-02 20:51:36,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:36,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:36,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:36,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186253459] [2022-11-02 20:51:36,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186253459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:36,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:36,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:51:36,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406765014] [2022-11-02 20:51:36,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:36,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:51:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:51:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:51:36,889 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2022-11-02 20:51:36,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 90 transitions, 398 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-11-02 20:51:36,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:36,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2022-11-02 20:51:36,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:37,043 INFO L130 PetriNetUnfolder]: 47/330 cut-off events. [2022-11-02 20:51:37,043 INFO L131 PetriNetUnfolder]: For 936/2474 co-relation queries the response was YES. [2022-11-02 20:51:37,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 330 events. 47/330 cut-off events. For 936/2474 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1766 event pairs, 5 based on Foata normal form. 7/328 useless extension candidates. Maximal degree in co-relation 954. Up to 61 conditions per place. [2022-11-02 20:51:37,046 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 14 selfloop transitions, 8 changer transitions 34/118 dead transitions. [2022-11-02 20:51:37,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 118 transitions, 769 flow [2022-11-02 20:51:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:51:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:51:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 543 transitions. [2022-11-02 20:51:37,049 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.843167701863354 [2022-11-02 20:51:37,049 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 543 transitions. [2022-11-02 20:51:37,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 543 transitions. [2022-11-02 20:51:37,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:37,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 543 transitions. [2022-11-02 20:51:37,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2022-11-02 20:51:37,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-11-02 20:51:37,053 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-11-02 20:51:37,053 INFO L175 Difference]: Start difference. First operand has 124 places, 90 transitions, 398 flow. Second operand 7 states and 543 transitions. [2022-11-02 20:51:37,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 118 transitions, 769 flow [2022-11-02 20:51:37,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 715 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-11-02 20:51:37,062 INFO L231 Difference]: Finished difference. Result has 108 places, 82 transitions, 328 flow [2022-11-02 20:51:37,063 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=328, PETRI_PLACES=108, PETRI_TRANSITIONS=82} [2022-11-02 20:51:37,065 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 24 predicate places. [2022-11-02 20:51:37,065 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 82 transitions, 328 flow [2022-11-02 20:51:37,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-11-02 20:51:37,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:37,066 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:37,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:51:37,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:51:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:37,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1566164273, now seen corresponding path program 1 times [2022-11-02 20:51:37,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:37,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650301738] [2022-11-02 20:51:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:37,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:37,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:37,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650301738] [2022-11-02 20:51:37,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650301738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:37,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:37,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:51:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237175900] [2022-11-02 20:51:37,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:37,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:51:37,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:37,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:51:37,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:51:37,294 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-02 20:51:37,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 82 transitions, 328 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2022-11-02 20:51:37,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:37,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-02 20:51:37,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:37,496 INFO L130 PetriNetUnfolder]: 13/174 cut-off events. [2022-11-02 20:51:37,496 INFO L131 PetriNetUnfolder]: For 345/442 co-relation queries the response was YES. [2022-11-02 20:51:37,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 174 events. 13/174 cut-off events. For 345/442 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 588 event pairs, 1 based on Foata normal form. 10/179 useless extension candidates. Maximal degree in co-relation 420. Up to 18 conditions per place. [2022-11-02 20:51:37,498 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 15 selfloop transitions, 4 changer transitions 22/97 dead transitions. [2022-11-02 20:51:37,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 97 transitions, 506 flow [2022-11-02 20:51:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:51:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:51:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 950 transitions. [2022-11-02 20:51:37,502 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.794314381270903 [2022-11-02 20:51:37,502 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 950 transitions. [2022-11-02 20:51:37,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 950 transitions. [2022-11-02 20:51:37,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:37,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 950 transitions. [2022-11-02 20:51:37,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.07692307692308) internal successors, (950), 13 states have internal predecessors, (950), 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) [2022-11-02 20:51:37,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-11-02 20:51:37,509 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-11-02 20:51:37,509 INFO L175 Difference]: Start difference. First operand has 108 places, 82 transitions, 328 flow. Second operand 13 states and 950 transitions. [2022-11-02 20:51:37,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 97 transitions, 506 flow [2022-11-02 20:51:37,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 97 transitions, 461 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-11-02 20:51:37,514 INFO L231 Difference]: Finished difference. Result has 118 places, 74 transitions, 244 flow [2022-11-02 20:51:37,514 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=244, PETRI_PLACES=118, PETRI_TRANSITIONS=74} [2022-11-02 20:51:37,517 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 34 predicate places. [2022-11-02 20:51:37,518 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 74 transitions, 244 flow [2022-11-02 20:51:37,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2022-11-02 20:51:37,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:37,519 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:37,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:51:37,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:51:37,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:37,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1744059605, now seen corresponding path program 1 times [2022-11-02 20:51:37,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:37,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124277655] [2022-11-02 20:51:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:37,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:37,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:37,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124277655] [2022-11-02 20:51:37,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124277655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:37,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:37,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:51:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171974203] [2022-11-02 20:51:37,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:37,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:51:37,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:37,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:51:37,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:51:37,788 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-11-02 20:51:37,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 74 transitions, 244 flow. Second operand has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 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) [2022-11-02 20:51:37,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:37,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-11-02 20:51:37,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:37,928 INFO L130 PetriNetUnfolder]: 6/88 cut-off events. [2022-11-02 20:51:37,929 INFO L131 PetriNetUnfolder]: For 143/164 co-relation queries the response was YES. [2022-11-02 20:51:37,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 88 events. 6/88 cut-off events. For 143/164 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 2 based on Foata normal form. 2/87 useless extension candidates. Maximal degree in co-relation 199. Up to 14 conditions per place. [2022-11-02 20:51:37,930 INFO L137 encePairwiseOnDemand]: 85/92 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2022-11-02 20:51:37,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 79 transitions, 333 flow [2022-11-02 20:51:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:51:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:51:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 708 transitions. [2022-11-02 20:51:37,933 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7695652173913043 [2022-11-02 20:51:37,933 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 708 transitions. [2022-11-02 20:51:37,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 708 transitions. [2022-11-02 20:51:37,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:37,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 708 transitions. [2022-11-02 20:51:37,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.8) internal successors, (708), 10 states have internal predecessors, (708), 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) [2022-11-02 20:51:37,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2022-11-02 20:51:37,938 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2022-11-02 20:51:37,938 INFO L175 Difference]: Start difference. First operand has 118 places, 74 transitions, 244 flow. Second operand 10 states and 708 transitions. [2022-11-02 20:51:37,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 79 transitions, 333 flow [2022-11-02 20:51:37,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 79 transitions, 245 flow, removed 21 selfloop flow, removed 20 redundant places. [2022-11-02 20:51:37,940 INFO L231 Difference]: Finished difference. Result has 96 places, 0 transitions, 0 flow [2022-11-02 20:51:37,941 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=96, PETRI_TRANSITIONS=0} [2022-11-02 20:51:37,941 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2022-11-02 20:51:37,942 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 0 transitions, 0 flow [2022-11-02 20:51:37,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 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) [2022-11-02 20:51:37,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-02 20:51:37,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-02 20:51:37,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:51:37,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-02 20:51:37,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:51:37,948 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:37,951 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:51:37,952 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:51:37,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:51:37 BasicIcfg [2022-11-02 20:51:37,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:51:37,958 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:51:37,958 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:51:37,958 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:51:37,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:32" (3/4) ... [2022-11-02 20:51:37,961 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:51:37,970 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-02 20:51:37,970 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-02 20:51:37,971 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-02 20:51:37,977 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-02 20:51:37,977 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:51:37,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:51:37,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:51:38,025 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:51:38,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:51:38,026 INFO L158 Benchmark]: Toolchain (without parser) took 6466.39ms. Allocated memory was 94.4MB in the beginning and 165.7MB in the end (delta: 71.3MB). Free memory was 60.8MB in the beginning and 119.4MB in the end (delta: -58.6MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-11-02 20:51:38,027 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 94.4MB. Free memory was 47.9MB in the beginning and 47.9MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:51:38,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.27ms. Allocated memory is still 94.4MB. Free memory was 60.6MB in the beginning and 61.6MB in the end (delta: -1.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:51:38,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.44ms. Allocated memory is still 94.4MB. Free memory was 61.6MB in the beginning and 59.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:51:38,028 INFO L158 Benchmark]: Boogie Preprocessor took 48.90ms. Allocated memory is still 94.4MB. Free memory was 59.9MB in the beginning and 58.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:51:38,028 INFO L158 Benchmark]: RCFGBuilder took 537.67ms. Allocated memory is still 94.4MB. Free memory was 58.3MB in the beginning and 44.8MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 20:51:38,028 INFO L158 Benchmark]: TraceAbstraction took 5225.56ms. Allocated memory was 94.4MB in the beginning and 165.7MB in the end (delta: 71.3MB). Free memory was 44.1MB in the beginning and 121.6MB in the end (delta: -77.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:51:38,029 INFO L158 Benchmark]: Witness Printer took 67.43ms. Allocated memory is still 165.7MB. Free memory was 121.6MB in the beginning and 119.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:51:38,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 94.4MB. Free memory was 47.9MB in the beginning and 47.9MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 503.27ms. Allocated memory is still 94.4MB. Free memory was 60.6MB in the beginning and 61.6MB in the end (delta: -1.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.44ms. Allocated memory is still 94.4MB. Free memory was 61.6MB in the beginning and 59.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.90ms. Allocated memory is still 94.4MB. Free memory was 59.9MB in the beginning and 58.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 537.67ms. Allocated memory is still 94.4MB. Free memory was 58.3MB in the beginning and 44.8MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5225.56ms. Allocated memory was 94.4MB in the beginning and 165.7MB in the end (delta: 71.3MB). Free memory was 44.1MB in the beginning and 121.6MB in the end (delta: -77.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 67.43ms. Allocated memory is still 165.7MB. Free memory was 121.6MB in the beginning and 119.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 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: 5.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 297 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 297 mSDsluCounter, 497 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 479 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 400 IncrementalHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 128 mSDtfsCounter, 400 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=398occurred in iteration=4, InterpolantAutomatonStates: 78, 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, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 413 ConstructedInterpolants, 0 QuantifiedInterpolants, 2187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2022-11-02 20:51:38,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54fdbdeb-4bf9-49b5-88d7-0b25190a3ffa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE