./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/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_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/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_5631cb16-9290-4d4c-b320-59a3e9df95f7/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 5a744aa24a15b244d86986861038a45981c329f5578e2da992d82373e2f73c5a --- 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 20:53:51,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:53:51,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:53:51,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:53:51,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:53:51,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:53:51,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:53:51,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:53:51,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:53:51,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:53:51,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:53:51,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:53:51,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:53:51,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:53:51,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:53:51,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:53:51,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:53:51,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:53:51,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:53:51,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:53:51,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:53:51,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:53:51,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:53:51,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:53:51,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:53:51,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:53:51,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:53:51,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:53:51,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:53:51,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:53:51,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:53:51,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:53:51,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:53:51,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:53:51,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:53:51,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:53:51,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:53:51,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:53:51,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:53:51,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:53:51,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:53:51,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:53:51,359 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:53:51,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:53:51,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:53:51,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:53:51,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:53:51,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:53:51,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:53:51,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:53:51,364 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:53:51,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:53:51,365 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:53:51,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:53:51,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:53:51,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:53:51,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:53:51,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:53:51,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:53:51,367 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:53:51,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:53:51,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:53:51,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:53:51,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:53:51,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:53:51,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:53:51,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:53:51,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:53:51,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:53:51,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:53:51,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:53:51,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:53:51,373 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:53:51,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:53:51,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:53:51,374 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_5631cb16-9290-4d4c-b320-59a3e9df95f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a744aa24a15b244d86986861038a45981c329f5578e2da992d82373e2f73c5a [2022-11-02 20:53:51,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:53:51,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:53:51,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:53:51,835 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:53:51,836 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:53:51,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2022-11-02 20:53:51,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/data/b9a300843/02db4c6c62dc45a7b3b8544dcbc9f840/FLAGb328d5a02 [2022-11-02 20:53:52,739 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:53:52,740 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2022-11-02 20:53:52,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/data/b9a300843/02db4c6c62dc45a7b3b8544dcbc9f840/FLAGb328d5a02 [2022-11-02 20:53:52,916 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/data/b9a300843/02db4c6c62dc45a7b3b8544dcbc9f840 [2022-11-02 20:53:52,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:53:52,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:53:52,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:53:52,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:53:52,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:53:52,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:53:52" (1/1) ... [2022-11-02 20:53:52,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0e807d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:52, skipping insertion in model container [2022-11-02 20:53:52,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:53:52" (1/1) ... [2022-11-02 20:53:52,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:53:53,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:53:53,241 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_5631cb16-9290-4d4c-b320-59a3e9df95f7/sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-02 20:53:53,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:53:53,630 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:53:53,655 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_5631cb16-9290-4d4c-b320-59a3e9df95f7/sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-02 20:53:53,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:53:53,793 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:53:53,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53 WrapperNode [2022-11-02 20:53:53,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:53:53,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:53:53,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:53:53,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:53:53,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:53,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:53,900 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 193 [2022-11-02 20:53:53,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:53:53,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:53:53,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:53:53,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:53:53,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:53,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:53,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:53,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:53,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:53,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:53,973 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:53,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:53,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:53:53,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:53:53,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:53:53,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:53:53,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (1/1) ... [2022-11-02 20:53:54,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:53:54,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:53:54,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:53:54,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5631cb16-9290-4d4c-b320-59a3e9df95f7/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:53:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:53:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:53:54,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:53:54,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:53:54,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:53:54,111 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:53:54,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:53:54,112 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:53:54,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:53:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-02 20:53:54,114 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-02 20:53:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-02 20:53:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-02 20:53:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:53:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:53:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:53:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:53:54,118 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 20:53:54,342 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:53:54,345 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:53:55,387 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:53:56,078 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:53:56,079 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:53:56,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:53:56 BoogieIcfgContainer [2022-11-02 20:53:56,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:53:56,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:53:56,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:53:56,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:53:56,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:53:52" (1/3) ... [2022-11-02 20:53:56,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f41144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:53:56, skipping insertion in model container [2022-11-02 20:53:56,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:53" (2/3) ... [2022-11-02 20:53:56,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f41144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:53:56, skipping insertion in model container [2022-11-02 20:53:56,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:53:56" (3/3) ... [2022-11-02 20:53:56,098 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018_power.oepc_pso.oepc_rmo.oepc.i [2022-11-02 20:53:56,111 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:53:56,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:53:56,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:53:56,126 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:53:56,259 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:53:56,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 296 flow [2022-11-02 20:53:56,451 INFO L130 PetriNetUnfolder]: 2/134 cut-off events. [2022-11-02 20:53:56,451 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:53:56,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 2/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-11-02 20:53:56,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 296 flow [2022-11-02 20:53:56,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 134 transitions, 280 flow [2022-11-02 20:53:56,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:53:56,512 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;@2fa31e7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:53:56,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-02 20:53:56,539 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2022-11-02 20:53:56,540 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:53:56,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:56,541 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] [2022-11-02 20:53:56,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:53:56,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1436643446, now seen corresponding path program 1 times [2022-11-02 20:53:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:56,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174941945] [2022-11-02 20:53:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:56,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:57,361 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 20:53:57,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:57,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174941945] [2022-11-02 20:53:57,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174941945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:57,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:57,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:53:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974237687] [2022-11-02 20:53:57,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:57,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:53:57,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:57,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:53:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:57,436 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 138 [2022-11-02 20:53:57,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:57,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:57,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 138 [2022-11-02 20:53:57,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:57,912 INFO L130 PetriNetUnfolder]: 162/548 cut-off events. [2022-11-02 20:53:57,912 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-02 20:53:57,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 548 events. 162/548 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2846 event pairs, 34 based on Foata normal form. 49/568 useless extension candidates. Maximal degree in co-relation 796. Up to 191 conditions per place. [2022-11-02 20:53:57,930 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 18 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-11-02 20:53:57,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 337 flow [2022-11-02 20:53:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:53:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:53:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-11-02 20:53:57,960 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2022-11-02 20:53:57,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-11-02 20:53:57,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-11-02 20:53:57,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:57,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-11-02 20:53:57,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 20:53:57,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 20:53:57,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 20:53:57,997 INFO L175 Difference]: Start difference. First operand has 145 places, 134 transitions, 280 flow. Second operand 3 states and 391 transitions. [2022-11-02 20:53:57,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 337 flow [2022-11-02 20:53:58,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:53:58,019 INFO L231 Difference]: Finished difference. Result has 141 places, 130 transitions, 272 flow [2022-11-02 20:53:58,022 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=141, PETRI_TRANSITIONS=130} [2022-11-02 20:53:58,027 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, -4 predicate places. [2022-11-02 20:53:58,028 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 272 flow [2022-11-02 20:53:58,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:58,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:58,030 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, 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 20:53:58,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:53:58,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:53:58,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:58,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1501495155, now seen corresponding path program 1 times [2022-11-02 20:53:58,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:58,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462905798] [2022-11-02 20:53:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:58,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:58,748 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 20:53:58,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:58,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462905798] [2022-11-02 20:53:58,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462905798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:58,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:58,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:53:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584115415] [2022-11-02 20:53:58,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:58,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:53:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:53:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:53:58,765 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 138 [2022-11-02 20:53:58,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 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 20:53:58,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:58,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 138 [2022-11-02 20:53:58,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:06,617 INFO L130 PetriNetUnfolder]: 10039/22699 cut-off events. [2022-11-02 20:54:06,617 INFO L131 PetriNetUnfolder]: For 635/635 co-relation queries the response was YES. [2022-11-02 20:54:06,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37367 conditions, 22699 events. 10039/22699 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 231893 event pairs, 2856 based on Foata normal form. 0/22075 useless extension candidates. Maximal degree in co-relation 37306. Up to 6487 conditions per place. [2022-11-02 20:54:06,844 INFO L137 encePairwiseOnDemand]: 125/138 looper letters, 36 selfloop transitions, 9 changer transitions 90/224 dead transitions. [2022-11-02 20:54:06,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 224 transitions, 722 flow [2022-11-02 20:54:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:54:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:54:06,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1078 transitions. [2022-11-02 20:54:06,850 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8679549114331723 [2022-11-02 20:54:06,850 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1078 transitions. [2022-11-02 20:54:06,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1078 transitions. [2022-11-02 20:54:06,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:06,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1078 transitions. [2022-11-02 20:54:06,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.77777777777777) internal successors, (1078), 9 states have internal predecessors, (1078), 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 20:54:06,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 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 20:54:06,861 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 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 20:54:06,862 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 9 states and 1078 transitions. [2022-11-02 20:54:06,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 224 transitions, 722 flow [2022-11-02 20:54:06,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 224 transitions, 704 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:54:06,872 INFO L231 Difference]: Finished difference. Result has 155 places, 122 transitions, 350 flow [2022-11-02 20:54:06,873 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=350, PETRI_PLACES=155, PETRI_TRANSITIONS=122} [2022-11-02 20:54:06,874 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 10 predicate places. [2022-11-02 20:54:06,874 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 122 transitions, 350 flow [2022-11-02 20:54:06,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 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 20:54:06,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:06,876 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, 1, 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 20:54:06,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:54:06,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:54:06,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash -333826356, now seen corresponding path program 1 times [2022-11-02 20:54:06,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:06,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33407694] [2022-11-02 20:54:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:06,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:07,356 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 20:54:07,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:07,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33407694] [2022-11-02 20:54:07,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33407694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:07,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:07,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:54:07,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396439589] [2022-11-02 20:54:07,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:07,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:54:07,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:07,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:54:07,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:07,363 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 138 [2022-11-02 20:54:07,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 122 transitions, 350 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 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 20:54:07,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:07,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 138 [2022-11-02 20:54:07,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:12,160 INFO L130 PetriNetUnfolder]: 7126/12302 cut-off events. [2022-11-02 20:54:12,161 INFO L131 PetriNetUnfolder]: For 19192/19198 co-relation queries the response was YES. [2022-11-02 20:54:12,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37148 conditions, 12302 events. 7126/12302 cut-off events. For 19192/19198 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 92976 event pairs, 806 based on Foata normal form. 264/12415 useless extension candidates. Maximal degree in co-relation 37075. Up to 4199 conditions per place. [2022-11-02 20:54:12,311 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 46 selfloop transitions, 8 changer transitions 103/246 dead transitions. [2022-11-02 20:54:12,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 246 transitions, 1302 flow [2022-11-02 20:54:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:54:12,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:54:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1521 transitions. [2022-11-02 20:54:12,318 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2022-11-02 20:54:12,318 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1521 transitions. [2022-11-02 20:54:12,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1521 transitions. [2022-11-02 20:54:12,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:12,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1521 transitions. [2022-11-02 20:54:12,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.0) internal successors, (1521), 13 states have internal predecessors, (1521), 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 20:54:12,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 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 20:54:12,334 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 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 20:54:12,334 INFO L175 Difference]: Start difference. First operand has 155 places, 122 transitions, 350 flow. Second operand 13 states and 1521 transitions. [2022-11-02 20:54:12,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 246 transitions, 1302 flow [2022-11-02 20:54:12,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 246 transitions, 1192 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-11-02 20:54:12,542 INFO L231 Difference]: Finished difference. Result has 157 places, 126 transitions, 426 flow [2022-11-02 20:54:12,543 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=426, PETRI_PLACES=157, PETRI_TRANSITIONS=126} [2022-11-02 20:54:12,546 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 12 predicate places. [2022-11-02 20:54:12,546 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 126 transitions, 426 flow [2022-11-02 20:54:12,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 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 20:54:12,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:12,548 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, 1, 1, 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 20:54:12,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:54:12,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:54:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:12,550 INFO L85 PathProgramCache]: Analyzing trace with hash -828398435, now seen corresponding path program 1 times [2022-11-02 20:54:12,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:12,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463676506] [2022-11-02 20:54:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:12,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:13,199 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 20:54:13,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:13,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463676506] [2022-11-02 20:54:13,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463676506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:13,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:13,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:54:13,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545707905] [2022-11-02 20:54:13,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:13,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:54:13,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:13,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:54:13,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:54:13,204 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 138 [2022-11-02 20:54:13,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 126 transitions, 426 flow. Second operand has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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 20:54:13,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:13,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 138 [2022-11-02 20:54:13,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:17,111 INFO L130 PetriNetUnfolder]: 5100/9792 cut-off events. [2022-11-02 20:54:17,111 INFO L131 PetriNetUnfolder]: For 22891/23032 co-relation queries the response was YES. [2022-11-02 20:54:17,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30091 conditions, 9792 events. 5100/9792 cut-off events. For 22891/23032 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 80654 event pairs, 2364 based on Foata normal form. 212/9695 useless extension candidates. Maximal degree in co-relation 30012. Up to 4170 conditions per place. [2022-11-02 20:54:17,235 INFO L137 encePairwiseOnDemand]: 131/138 looper letters, 31 selfloop transitions, 6 changer transitions 55/193 dead transitions. [2022-11-02 20:54:17,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 193 transitions, 996 flow [2022-11-02 20:54:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:54:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:54:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1098 transitions. [2022-11-02 20:54:17,240 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8840579710144928 [2022-11-02 20:54:17,240 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1098 transitions. [2022-11-02 20:54:17,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1098 transitions. [2022-11-02 20:54:17,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:17,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1098 transitions. [2022-11-02 20:54:17,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.0) internal successors, (1098), 9 states have internal predecessors, (1098), 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 20:54:17,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 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 20:54:17,249 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 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 20:54:17,250 INFO L175 Difference]: Start difference. First operand has 157 places, 126 transitions, 426 flow. Second operand 9 states and 1098 transitions. [2022-11-02 20:54:17,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 193 transitions, 996 flow [2022-11-02 20:54:17,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 193 transitions, 945 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-11-02 20:54:17,529 INFO L231 Difference]: Finished difference. Result has 156 places, 130 transitions, 493 flow [2022-11-02 20:54:17,530 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=493, PETRI_PLACES=156, PETRI_TRANSITIONS=130} [2022-11-02 20:54:17,531 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 11 predicate places. [2022-11-02 20:54:17,532 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 130 transitions, 493 flow [2022-11-02 20:54:17,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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 20:54:17,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:17,533 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, 1, 1, 1, 1, 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 20:54:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:54:17,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:54:17,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:17,535 INFO L85 PathProgramCache]: Analyzing trace with hash 144156632, now seen corresponding path program 1 times [2022-11-02 20:54:17,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:17,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400819175] [2022-11-02 20:54:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:17,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:17,979 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 20:54:17,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:17,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400819175] [2022-11-02 20:54:17,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400819175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:17,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:17,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:54:17,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799350089] [2022-11-02 20:54:17,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:17,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:54:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:17,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:54:17,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:54:17,984 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-02 20:54:17,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 130 transitions, 493 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 20:54:17,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:17,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-02 20:54:17,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:27,224 INFO L130 PetriNetUnfolder]: 15548/27824 cut-off events. [2022-11-02 20:54:27,224 INFO L131 PetriNetUnfolder]: For 30160/37713 co-relation queries the response was YES. [2022-11-02 20:54:27,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65486 conditions, 27824 events. 15548/27824 cut-off events. For 30160/37713 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 248885 event pairs, 1178 based on Foata normal form. 9/26603 useless extension candidates. Maximal degree in co-relation 65405. Up to 8442 conditions per place. [2022-11-02 20:54:27,533 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 93 selfloop transitions, 20 changer transitions 0/219 dead transitions. [2022-11-02 20:54:27,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 219 transitions, 1001 flow [2022-11-02 20:54:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:54:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:54:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1217 transitions. [2022-11-02 20:54:27,538 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8818840579710145 [2022-11-02 20:54:27,539 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1217 transitions. [2022-11-02 20:54:27,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1217 transitions. [2022-11-02 20:54:27,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:27,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1217 transitions. [2022-11-02 20:54:27,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 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 20:54:27,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 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 20:54:27,548 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 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 20:54:27,549 INFO L175 Difference]: Start difference. First operand has 156 places, 130 transitions, 493 flow. Second operand 10 states and 1217 transitions. [2022-11-02 20:54:27,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 219 transitions, 1001 flow [2022-11-02 20:54:27,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 219 transitions, 953 flow, removed 21 selfloop flow, removed 10 redundant places. [2022-11-02 20:54:27,674 INFO L231 Difference]: Finished difference. Result has 155 places, 148 transitions, 588 flow [2022-11-02 20:54:27,675 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=588, PETRI_PLACES=155, PETRI_TRANSITIONS=148} [2022-11-02 20:54:27,678 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 10 predicate places. [2022-11-02 20:54:27,679 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 148 transitions, 588 flow [2022-11-02 20:54:27,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 20:54:27,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:27,680 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, 1, 1, 1, 1, 1, 1, 1, 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 20:54:27,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:54:27,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:54:27,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:27,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1302155946, now seen corresponding path program 1 times [2022-11-02 20:54:27,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:27,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496849037] [2022-11-02 20:54:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:27,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:28,106 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 20:54:28,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:28,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496849037] [2022-11-02 20:54:28,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496849037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:28,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:28,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:54:28,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763582145] [2022-11-02 20:54:28,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:28,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:54:28,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:28,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:54:28,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:28,112 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 138 [2022-11-02 20:54:28,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 148 transitions, 588 flow. Second operand has 7 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 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 20:54:28,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:28,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 138 [2022-11-02 20:54:28,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:33,215 INFO L130 PetriNetUnfolder]: 6688/16718 cut-off events. [2022-11-02 20:54:33,216 INFO L131 PetriNetUnfolder]: For 30365/32496 co-relation queries the response was YES. [2022-11-02 20:54:33,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49085 conditions, 16718 events. 6688/16718 cut-off events. For 30365/32496 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 183322 event pairs, 2333 based on Foata normal form. 306/15980 useless extension candidates. Maximal degree in co-relation 49001. Up to 3187 conditions per place. [2022-11-02 20:54:33,425 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 85 selfloop transitions, 22 changer transitions 7/221 dead transitions. [2022-11-02 20:54:33,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 221 transitions, 1242 flow [2022-11-02 20:54:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:54:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:54:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1165 transitions. [2022-11-02 20:54:33,431 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2022-11-02 20:54:33,431 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1165 transitions. [2022-11-02 20:54:33,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1165 transitions. [2022-11-02 20:54:33,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:33,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1165 transitions. [2022-11-02 20:54:33,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.5) internal successors, (1165), 10 states have internal predecessors, (1165), 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 20:54:33,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 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 20:54:33,442 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 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 20:54:33,442 INFO L175 Difference]: Start difference. First operand has 155 places, 148 transitions, 588 flow. Second operand 10 states and 1165 transitions. [2022-11-02 20:54:33,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 221 transitions, 1242 flow [2022-11-02 20:54:33,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 221 transitions, 1232 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-02 20:54:33,654 INFO L231 Difference]: Finished difference. Result has 171 places, 157 transitions, 764 flow [2022-11-02 20:54:33,655 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=764, PETRI_PLACES=171, PETRI_TRANSITIONS=157} [2022-11-02 20:54:33,658 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 26 predicate places. [2022-11-02 20:54:33,659 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 157 transitions, 764 flow [2022-11-02 20:54:33,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 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 20:54:33,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:33,660 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, 1, 1, 1, 1, 1, 1, 1, 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 20:54:33,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:54:33,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:54:33,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash -306393676, now seen corresponding path program 1 times [2022-11-02 20:54:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:33,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880116350] [2022-11-02 20:54:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:33,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:34,214 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 20:54:34,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:34,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880116350] [2022-11-02 20:54:34,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880116350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:34,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:34,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:54:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230505549] [2022-11-02 20:54:34,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:34,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:54:34,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:34,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:54:34,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:34,224 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-02 20:54:34,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 157 transitions, 764 flow. Second operand has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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 20:54:34,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:34,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-02 20:54:34,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:54:45,690 INFO L130 PetriNetUnfolder]: 19638/36097 cut-off events. [2022-11-02 20:54:45,691 INFO L131 PetriNetUnfolder]: For 67745/75134 co-relation queries the response was YES. [2022-11-02 20:54:46,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111679 conditions, 36097 events. 19638/36097 cut-off events. For 67745/75134 co-relation queries the response was YES. Maximal size of possible extension queue 2114. Compared 348484 event pairs, 1105 based on Foata normal form. 639/35729 useless extension candidates. Maximal degree in co-relation 111587. Up to 7445 conditions per place. [2022-11-02 20:54:46,149 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 121 selfloop transitions, 38 changer transitions 0/274 dead transitions. [2022-11-02 20:54:46,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 274 transitions, 1662 flow [2022-11-02 20:54:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:54:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:54:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1587 transitions. [2022-11-02 20:54:46,156 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-11-02 20:54:46,156 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1587 transitions. [2022-11-02 20:54:46,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1587 transitions. [2022-11-02 20:54:46,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:54:46,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1587 transitions. [2022-11-02 20:54:46,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 122.07692307692308) internal successors, (1587), 13 states have internal predecessors, (1587), 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 20:54:46,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 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 20:54:46,169 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 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 20:54:46,170 INFO L175 Difference]: Start difference. First operand has 171 places, 157 transitions, 764 flow. Second operand 13 states and 1587 transitions. [2022-11-02 20:54:46,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 274 transitions, 1662 flow [2022-11-02 20:54:48,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 274 transitions, 1624 flow, removed 19 selfloop flow, removed 0 redundant places. [2022-11-02 20:54:48,380 INFO L231 Difference]: Finished difference. Result has 189 places, 177 transitions, 1019 flow [2022-11-02 20:54:48,381 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1019, PETRI_PLACES=189, PETRI_TRANSITIONS=177} [2022-11-02 20:54:48,381 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 44 predicate places. [2022-11-02 20:54:48,382 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 177 transitions, 1019 flow [2022-11-02 20:54:48,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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 20:54:48,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:54:48,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:48,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:54:48,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:54:48,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash -18238653, now seen corresponding path program 1 times [2022-11-02 20:54:48,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:48,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721009751] [2022-11-02 20:54:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:48,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:48,869 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 20:54:48,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:48,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721009751] [2022-11-02 20:54:48,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721009751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:48,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:48,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:54:48,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51113446] [2022-11-02 20:54:48,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:48,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:54:48,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:48,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:54:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:54:48,879 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-02 20:54:48,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 177 transitions, 1019 flow. Second operand has 8 states, 8 states have (on average 113.125) internal successors, (905), 8 states have internal predecessors, (905), 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 20:54:48,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:54:48,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-02 20:54:48,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand