./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ --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 f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f --- 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-dbf71c6-m [2022-10-17 10:51:43,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:51:43,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:51:43,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:51:43,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:51:43,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:51:43,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:51:43,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:51:43,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:51:43,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:51:43,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:51:43,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:51:43,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:51:43,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:51:43,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:51:43,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:51:43,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:51:43,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:51:43,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:51:43,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:51:43,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:51:43,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:51:43,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:51:43,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:51:43,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:51:43,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:51:43,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:51:43,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:51:43,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:51:43,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:51:43,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:51:43,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:51:43,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:51:43,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:51:43,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:51:43,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:51:43,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:51:43,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:51:43,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:51:43,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:51:43,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:51:43,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:51:43,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:51:43,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:51:43,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:51:43,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:51:43,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:51:43,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:51:43,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:51:43,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:51:43,408 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:51:43,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:51:43,419 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:51:43,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:51:43,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:51:43,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:51:43,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:51:43,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:51:43,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:51:43,421 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:51:43,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:51:43,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:51:43,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:51:43,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:51:43,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:51:43,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:51:43,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:51:43,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:51:43,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:51:43,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:51:43,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:51:43,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:51:43,425 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:51:43,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:51:43,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:51:43,425 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_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2022-10-17 10:51:43,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:51:43,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:51:43,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:51:43,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:51:43,719 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:51:43,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/safe017_tso.i [2022-10-17 10:51:43,799 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/data/74267ef49/6543aa21263546908d9a4a9ec5d94f91/FLAG9e134dfe3 [2022-10-17 10:51:44,395 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:51:44,396 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2022-10-17 10:51:44,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/data/74267ef49/6543aa21263546908d9a4a9ec5d94f91/FLAG9e134dfe3 [2022-10-17 10:51:44,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/data/74267ef49/6543aa21263546908d9a4a9ec5d94f91 [2022-10-17 10:51:44,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:51:44,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:51:44,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:51:44,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:51:44,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:51:44,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:51:44" (1/1) ... [2022-10-17 10:51:44,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35498cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:44, skipping insertion in model container [2022-10-17 10:51:44,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:51:44" (1/1) ... [2022-10-17 10:51:44,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:51:44,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:51:44,983 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_009cd7d6-8e6b-485d-ae85-87130965eadc/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2022-10-17 10:51:45,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:51:45,246 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:51:45,262 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_009cd7d6-8e6b-485d-ae85-87130965eadc/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2022-10-17 10:51:45,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:51:45,381 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:51:45,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45 WrapperNode [2022-10-17 10:51:45,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:51:45,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:51:45,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:51:45,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:51:45,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,457 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2022-10-17 10:51:45,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:51:45,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:51:45,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:51:45,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:51:45,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,502 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:51:45,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:51:45,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:51:45,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:51:45,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (1/1) ... [2022-10-17 10:51:45,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:51:45,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:51:45,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:51:45,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:51:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:51:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:51:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:51:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:51:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:51:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:51:45,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:51:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:51:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:51:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:51:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:51:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:51:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:51:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:51:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:51:45,623 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:51:45,831 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:51:45,833 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:51:46,044 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:51:46,051 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:51:46,052 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:51:46,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:51:46 BoogieIcfgContainer [2022-10-17 10:51:46,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:51:46,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:51:46,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:51:46,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:51:46,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:51:44" (1/3) ... [2022-10-17 10:51:46,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21408e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:51:46, skipping insertion in model container [2022-10-17 10:51:46,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:45" (2/3) ... [2022-10-17 10:51:46,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21408e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:51:46, skipping insertion in model container [2022-10-17 10:51:46,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:51:46" (3/3) ... [2022-10-17 10:51:46,063 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2022-10-17 10:51:46,072 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:51:46,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:51:46,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:51:46,082 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:51:46,145 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:51:46,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 193 flow [2022-10-17 10:51:46,268 INFO L130 PetriNetUnfolder]: 2/86 cut-off events. [2022-10-17 10:51:46,268 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:51:46,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-10-17 10:51:46,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 89 transitions, 193 flow [2022-10-17 10:51:46,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 72 transitions, 153 flow [2022-10-17 10:51:46,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:51:46,295 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;@52e04058, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:51:46,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:51:46,323 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-10-17 10:51:46,323 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:51:46,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:51:46,324 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] [2022-10-17 10:51:46,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:51:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:46,331 INFO L85 PathProgramCache]: Analyzing trace with hash 765436880, now seen corresponding path program 1 times [2022-10-17 10:51:46,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:46,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928068443] [2022-10-17 10:51:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:46,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:51:47,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:47,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928068443] [2022-10-17 10:51:47,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928068443] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:47,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:47,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:51:47,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696616926] [2022-10-17 10:51:47,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:47,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:51:47,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:47,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:51:47,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:51:47,310 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-10-17 10:51:47,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 153 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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) [2022-10-17 10:51:47,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:51:47,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-10-17 10:51:47,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:51:47,861 INFO L130 PetriNetUnfolder]: 303/715 cut-off events. [2022-10-17 10:51:47,862 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-10-17 10:51:47,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 715 events. 303/715 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3719 event pairs, 15 based on Foata normal form. 27/711 useless extension candidates. Maximal degree in co-relation 1231. Up to 135 conditions per place. [2022-10-17 10:51:47,876 INFO L137 encePairwiseOnDemand]: 78/89 looper letters, 22 selfloop transitions, 6 changer transitions 47/129 dead transitions. [2022-10-17 10:51:47,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 417 flow [2022-10-17 10:51:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:51:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:51:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 965 transitions. [2022-10-17 10:51:47,906 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8340535868625756 [2022-10-17 10:51:47,907 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 965 transitions. [2022-10-17 10:51:47,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 965 transitions. [2022-10-17 10:51:47,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:51:47,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 965 transitions. [2022-10-17 10:51:47,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.23076923076923) internal successors, (965), 13 states have internal predecessors, (965), 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) [2022-10-17 10:51:47,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:47,953 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:47,955 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 153 flow. Second operand 13 states and 965 transitions. [2022-10-17 10:51:47,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 417 flow [2022-10-17 10:51:47,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 414 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:51:47,971 INFO L231 Difference]: Finished difference. Result has 102 places, 75 transitions, 234 flow [2022-10-17 10:51:47,974 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=234, PETRI_PLACES=102, PETRI_TRANSITIONS=75} [2022-10-17 10:51:47,981 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2022-10-17 10:51:47,981 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 75 transitions, 234 flow [2022-10-17 10:51:47,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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) [2022-10-17 10:51:47,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:51:47,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:47,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:51:47,984 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:51:47,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:47,986 INFO L85 PathProgramCache]: Analyzing trace with hash -109867121, now seen corresponding path program 1 times [2022-10-17 10:51:47,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:47,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060492156] [2022-10-17 10:51:47,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:47,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:51:48,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:48,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060492156] [2022-10-17 10:51:48,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060492156] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:48,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:48,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:51:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472909992] [2022-10-17 10:51:48,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:48,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:51:48,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:48,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:51:48,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:51:48,485 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-10-17 10:51:48,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 75 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2022-10-17 10:51:48,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:51:48,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-10-17 10:51:48,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:51:48,947 INFO L130 PetriNetUnfolder]: 172/677 cut-off events. [2022-10-17 10:51:48,947 INFO L131 PetriNetUnfolder]: For 1281/1352 co-relation queries the response was YES. [2022-10-17 10:51:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 677 events. 172/677 cut-off events. For 1281/1352 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4245 event pairs, 8 based on Foata normal form. 22/684 useless extension candidates. Maximal degree in co-relation 1852. Up to 112 conditions per place. [2022-10-17 10:51:48,956 INFO L137 encePairwiseOnDemand]: 78/89 looper letters, 26 selfloop transitions, 13 changer transitions 52/145 dead transitions. [2022-10-17 10:51:48,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 145 transitions, 924 flow [2022-10-17 10:51:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:51:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:51:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 964 transitions. [2022-10-17 10:51:48,961 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8331892826274849 [2022-10-17 10:51:48,961 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 964 transitions. [2022-10-17 10:51:48,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 964 transitions. [2022-10-17 10:51:48,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:51:48,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 964 transitions. [2022-10-17 10:51:48,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.15384615384616) internal successors, (964), 13 states have internal predecessors, (964), 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) [2022-10-17 10:51:48,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:48,970 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:48,971 INFO L175 Difference]: Start difference. First operand has 102 places, 75 transitions, 234 flow. Second operand 13 states and 964 transitions. [2022-10-17 10:51:48,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 145 transitions, 924 flow [2022-10-17 10:51:48,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 145 transitions, 896 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-10-17 10:51:48,983 INFO L231 Difference]: Finished difference. Result has 113 places, 84 transitions, 389 flow [2022-10-17 10:51:48,984 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=389, PETRI_PLACES=113, PETRI_TRANSITIONS=84} [2022-10-17 10:51:48,985 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2022-10-17 10:51:48,985 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 84 transitions, 389 flow [2022-10-17 10:51:48,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2022-10-17 10:51:48,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:51:48,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:48,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:51:48,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:51:48,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:48,987 INFO L85 PathProgramCache]: Analyzing trace with hash 807853648, now seen corresponding path program 1 times [2022-10-17 10:51:48,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:48,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914883835] [2022-10-17 10:51:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:48,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:51:49,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:49,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914883835] [2022-10-17 10:51:49,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914883835] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:49,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:49,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:51:49,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323589663] [2022-10-17 10:51:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:49,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:51:49,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:51:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:51:49,239 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 89 [2022-10-17 10:51:49,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 84 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2022-10-17 10:51:49,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:51:49,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 89 [2022-10-17 10:51:49,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:51:49,473 INFO L130 PetriNetUnfolder]: 71/336 cut-off events. [2022-10-17 10:51:49,473 INFO L131 PetriNetUnfolder]: For 1523/1643 co-relation queries the response was YES. [2022-10-17 10:51:49,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 336 events. 71/336 cut-off events. For 1523/1643 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1582 event pairs, 12 based on Foata normal form. 24/347 useless extension candidates. Maximal degree in co-relation 1116. Up to 89 conditions per place. [2022-10-17 10:51:49,482 INFO L137 encePairwiseOnDemand]: 82/89 looper letters, 17 selfloop transitions, 4 changer transitions 22/111 dead transitions. [2022-10-17 10:51:49,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 111 transitions, 727 flow [2022-10-17 10:51:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:51:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:51:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 694 transitions. [2022-10-17 10:51:49,489 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8664169787765293 [2022-10-17 10:51:49,489 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 694 transitions. [2022-10-17 10:51:49,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 694 transitions. [2022-10-17 10:51:49,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:51:49,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 694 transitions. [2022-10-17 10:51:49,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.11111111111111) internal successors, (694), 9 states have internal predecessors, (694), 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) [2022-10-17 10:51:49,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 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) [2022-10-17 10:51:49,497 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 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) [2022-10-17 10:51:49,498 INFO L175 Difference]: Start difference. First operand has 113 places, 84 transitions, 389 flow. Second operand 9 states and 694 transitions. [2022-10-17 10:51:49,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 111 transitions, 727 flow [2022-10-17 10:51:49,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 111 transitions, 679 flow, removed 24 selfloop flow, removed 3 redundant places. [2022-10-17 10:51:49,515 INFO L231 Difference]: Finished difference. Result has 116 places, 87 transitions, 443 flow [2022-10-17 10:51:49,515 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=443, PETRI_PLACES=116, PETRI_TRANSITIONS=87} [2022-10-17 10:51:49,518 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 35 predicate places. [2022-10-17 10:51:49,519 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 87 transitions, 443 flow [2022-10-17 10:51:49,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2022-10-17 10:51:49,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:51:49,520 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] [2022-10-17 10:51:49,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:51:49,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:51:49,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:49,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1678040890, now seen corresponding path program 1 times [2022-10-17 10:51:49,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:49,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468378074] [2022-10-17 10:51:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:49,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:51:49,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:49,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468378074] [2022-10-17 10:51:49,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468378074] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:49,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:49,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:51:49,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984816145] [2022-10-17 10:51:49,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:49,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:51:49,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:51:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:51:49,813 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-10-17 10:51:49,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 87 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2022-10-17 10:51:49,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:51:49,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-10-17 10:51:49,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:51:50,099 INFO L130 PetriNetUnfolder]: 71/390 cut-off events. [2022-10-17 10:51:50,099 INFO L131 PetriNetUnfolder]: For 1862/2343 co-relation queries the response was YES. [2022-10-17 10:51:50,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 390 events. 71/390 cut-off events. For 1862/2343 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2088 event pairs, 1 based on Foata normal form. 8/386 useless extension candidates. Maximal degree in co-relation 1374. Up to 65 conditions per place. [2022-10-17 10:51:50,105 INFO L137 encePairwiseOnDemand]: 79/89 looper letters, 30 selfloop transitions, 19 changer transitions 23/126 dead transitions. [2022-10-17 10:51:50,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 126 transitions, 977 flow [2022-10-17 10:51:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:51:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:51:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 942 transitions. [2022-10-17 10:51:50,109 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8141745894554884 [2022-10-17 10:51:50,109 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 942 transitions. [2022-10-17 10:51:50,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 942 transitions. [2022-10-17 10:51:50,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:51:50,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 942 transitions. [2022-10-17 10:51:50,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.46153846153847) internal successors, (942), 13 states have internal predecessors, (942), 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) [2022-10-17 10:51:50,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:50,122 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:50,122 INFO L175 Difference]: Start difference. First operand has 116 places, 87 transitions, 443 flow. Second operand 13 states and 942 transitions. [2022-10-17 10:51:50,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 126 transitions, 977 flow [2022-10-17 10:51:50,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 924 flow, removed 24 selfloop flow, removed 10 redundant places. [2022-10-17 10:51:50,136 INFO L231 Difference]: Finished difference. Result has 124 places, 91 transitions, 570 flow [2022-10-17 10:51:50,136 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=570, PETRI_PLACES=124, PETRI_TRANSITIONS=91} [2022-10-17 10:51:50,140 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 43 predicate places. [2022-10-17 10:51:50,140 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 91 transitions, 570 flow [2022-10-17 10:51:50,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2022-10-17 10:51:50,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:51:50,143 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] [2022-10-17 10:51:50,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:51:50,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:51:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:50,144 INFO L85 PathProgramCache]: Analyzing trace with hash 204671329, now seen corresponding path program 1 times [2022-10-17 10:51:50,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:50,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820205078] [2022-10-17 10:51:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:50,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:51:50,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:50,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820205078] [2022-10-17 10:51:50,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820205078] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:50,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:50,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:51:50,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876100603] [2022-10-17 10:51:50,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:50,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:51:50,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:51:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:51:50,432 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-10-17 10:51:50,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 91 transitions, 570 flow. Second operand has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 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) [2022-10-17 10:51:50,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:51:50,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-10-17 10:51:50,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:51:50,643 INFO L130 PetriNetUnfolder]: 72/402 cut-off events. [2022-10-17 10:51:50,643 INFO L131 PetriNetUnfolder]: For 3220/3539 co-relation queries the response was YES. [2022-10-17 10:51:50,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 402 events. 72/402 cut-off events. For 3220/3539 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2172 event pairs, 7 based on Foata normal form. 16/404 useless extension candidates. Maximal degree in co-relation 1670. Up to 79 conditions per place. [2022-10-17 10:51:50,648 INFO L137 encePairwiseOnDemand]: 78/89 looper letters, 23 selfloop transitions, 13 changer transitions 36/126 dead transitions. [2022-10-17 10:51:50,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 126 transitions, 1191 flow [2022-10-17 10:51:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:51:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:51:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 594 transitions. [2022-10-17 10:51:50,651 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8342696629213483 [2022-10-17 10:51:50,651 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 594 transitions. [2022-10-17 10:51:50,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 594 transitions. [2022-10-17 10:51:50,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:51:50,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 594 transitions. [2022-10-17 10:51:50,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.25) internal successors, (594), 8 states have internal predecessors, (594), 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) [2022-10-17 10:51:50,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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) [2022-10-17 10:51:50,657 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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) [2022-10-17 10:51:50,658 INFO L175 Difference]: Start difference. First operand has 124 places, 91 transitions, 570 flow. Second operand 8 states and 594 transitions. [2022-10-17 10:51:50,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 126 transitions, 1191 flow [2022-10-17 10:51:50,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 126 transitions, 1117 flow, removed 37 selfloop flow, removed 9 redundant places. [2022-10-17 10:51:50,675 INFO L231 Difference]: Finished difference. Result has 117 places, 83 transitions, 476 flow [2022-10-17 10:51:50,675 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=117, PETRI_TRANSITIONS=83} [2022-10-17 10:51:50,677 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2022-10-17 10:51:50,678 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 83 transitions, 476 flow [2022-10-17 10:51:50,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 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) [2022-10-17 10:51:50,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:51:50,678 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] [2022-10-17 10:51:50,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:51:50,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:51:50,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash 789946829, now seen corresponding path program 1 times [2022-10-17 10:51:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:50,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547884623] [2022-10-17 10:51:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:51:50,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:50,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547884623] [2022-10-17 10:51:50,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547884623] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:50,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:50,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:51:50,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073876408] [2022-10-17 10:51:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:50,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:51:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:51:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:51:50,886 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 89 [2022-10-17 10:51:50,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 83 transitions, 476 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 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) [2022-10-17 10:51:50,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:51:50,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 89 [2022-10-17 10:51:50,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:51:51,206 INFO L130 PetriNetUnfolder]: 431/1166 cut-off events. [2022-10-17 10:51:51,206 INFO L131 PetriNetUnfolder]: For 1907/1963 co-relation queries the response was YES. [2022-10-17 10:51:51,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2678 conditions, 1166 events. 431/1166 cut-off events. For 1907/1963 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8650 event pairs, 24 based on Foata normal form. 3/1058 useless extension candidates. Maximal degree in co-relation 2613. Up to 312 conditions per place. [2022-10-17 10:51:51,219 INFO L137 encePairwiseOnDemand]: 79/89 looper letters, 20 selfloop transitions, 15 changer transitions 11/115 dead transitions. [2022-10-17 10:51:51,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 115 transitions, 636 flow [2022-10-17 10:51:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:51:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:51:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 768 transitions. [2022-10-17 10:51:51,222 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8629213483146068 [2022-10-17 10:51:51,222 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 768 transitions. [2022-10-17 10:51:51,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 768 transitions. [2022-10-17 10:51:51,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:51:51,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 768 transitions. [2022-10-17 10:51:51,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.8) internal successors, (768), 10 states have internal predecessors, (768), 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) [2022-10-17 10:51:51,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 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) [2022-10-17 10:51:51,229 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 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) [2022-10-17 10:51:51,229 INFO L175 Difference]: Start difference. First operand has 117 places, 83 transitions, 476 flow. Second operand 10 states and 768 transitions. [2022-10-17 10:51:51,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 115 transitions, 636 flow [2022-10-17 10:51:51,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 577 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-10-17 10:51:51,240 INFO L231 Difference]: Finished difference. Result has 120 places, 98 transitions, 526 flow [2022-10-17 10:51:51,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=120, PETRI_TRANSITIONS=98} [2022-10-17 10:51:51,241 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 39 predicate places. [2022-10-17 10:51:51,241 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 526 flow [2022-10-17 10:51:51,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 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) [2022-10-17 10:51:51,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:51:51,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:51,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:51:51,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:51:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:51,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1546183241, now seen corresponding path program 1 times [2022-10-17 10:51:51,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:51,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394839341] [2022-10-17 10:51:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:51,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:51:51,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:51,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394839341] [2022-10-17 10:51:51,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394839341] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:51,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:51,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:51:51,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980361225] [2022-10-17 10:51:51,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:51,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:51:51,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:51,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:51:51,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:51:51,420 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 89 [2022-10-17 10:51:51,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 98 transitions, 526 flow. Second operand has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 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) [2022-10-17 10:51:51,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:51:51,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 89 [2022-10-17 10:51:51,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:51:51,771 INFO L130 PetriNetUnfolder]: 289/982 cut-off events. [2022-10-17 10:51:51,771 INFO L131 PetriNetUnfolder]: For 1820/1975 co-relation queries the response was YES. [2022-10-17 10:51:51,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 982 events. 289/982 cut-off events. For 1820/1975 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7705 event pairs, 3 based on Foata normal form. 65/994 useless extension candidates. Maximal degree in co-relation 2984. Up to 219 conditions per place. [2022-10-17 10:51:51,782 INFO L137 encePairwiseOnDemand]: 79/89 looper letters, 23 selfloop transitions, 17 changer transitions 30/136 dead transitions. [2022-10-17 10:51:51,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 136 transitions, 840 flow [2022-10-17 10:51:51,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:51:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:51:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 995 transitions. [2022-10-17 10:51:51,786 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8599827139152982 [2022-10-17 10:51:51,786 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 995 transitions. [2022-10-17 10:51:51,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 995 transitions. [2022-10-17 10:51:51,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:51:51,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 995 transitions. [2022-10-17 10:51:51,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.53846153846153) internal successors, (995), 13 states have internal predecessors, (995), 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) [2022-10-17 10:51:51,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:51,794 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:51,794 INFO L175 Difference]: Start difference. First operand has 120 places, 98 transitions, 526 flow. Second operand 13 states and 995 transitions. [2022-10-17 10:51:51,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 136 transitions, 840 flow [2022-10-17 10:51:51,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 136 transitions, 796 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-10-17 10:51:51,807 INFO L231 Difference]: Finished difference. Result has 135 places, 99 transitions, 562 flow [2022-10-17 10:51:51,808 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=562, PETRI_PLACES=135, PETRI_TRANSITIONS=99} [2022-10-17 10:51:51,808 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 54 predicate places. [2022-10-17 10:51:51,808 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 99 transitions, 562 flow [2022-10-17 10:51:51,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 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) [2022-10-17 10:51:51,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:51:51,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:51,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:51:51,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:51:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:51,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1538332518, now seen corresponding path program 1 times [2022-10-17 10:51:51,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:51,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259523656] [2022-10-17 10:51:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:51,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:51:52,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:52,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259523656] [2022-10-17 10:51:52,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259523656] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:52,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:52,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:51:52,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080960133] [2022-10-17 10:51:52,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:52,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:51:52,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:52,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:51:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:51:52,007 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 89 [2022-10-17 10:51:52,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 99 transitions, 562 flow. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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) [2022-10-17 10:51:52,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:51:52,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 89 [2022-10-17 10:51:52,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:51:52,321 INFO L130 PetriNetUnfolder]: 90/545 cut-off events. [2022-10-17 10:51:52,322 INFO L131 PetriNetUnfolder]: For 2003/2510 co-relation queries the response was YES. [2022-10-17 10:51:52,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 545 events. 90/545 cut-off events. For 2003/2510 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4279 event pairs, 1 based on Foata normal form. 102/619 useless extension candidates. Maximal degree in co-relation 1940. Up to 151 conditions per place. [2022-10-17 10:51:52,327 INFO L137 encePairwiseOnDemand]: 80/89 looper letters, 9 selfloop transitions, 12 changer transitions 39/118 dead transitions. [2022-10-17 10:51:52,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 118 transitions, 800 flow [2022-10-17 10:51:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:51:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:51:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1129 transitions. [2022-10-17 10:51:52,331 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8456928838951311 [2022-10-17 10:51:52,332 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1129 transitions. [2022-10-17 10:51:52,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1129 transitions. [2022-10-17 10:51:52,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:51:52,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1129 transitions. [2022-10-17 10:51:52,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 75.26666666666667) internal successors, (1129), 15 states have internal predecessors, (1129), 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) [2022-10-17 10:51:52,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 89.0) internal successors, (1424), 16 states have internal predecessors, (1424), 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) [2022-10-17 10:51:52,341 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 89.0) internal successors, (1424), 16 states have internal predecessors, (1424), 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) [2022-10-17 10:51:52,341 INFO L175 Difference]: Start difference. First operand has 135 places, 99 transitions, 562 flow. Second operand 15 states and 1129 transitions. [2022-10-17 10:51:52,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 118 transitions, 800 flow [2022-10-17 10:51:52,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 118 transitions, 733 flow, removed 19 selfloop flow, removed 13 redundant places. [2022-10-17 10:51:52,355 INFO L231 Difference]: Finished difference. Result has 139 places, 77 transitions, 355 flow [2022-10-17 10:51:52,355 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=355, PETRI_PLACES=139, PETRI_TRANSITIONS=77} [2022-10-17 10:51:52,356 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 58 predicate places. [2022-10-17 10:51:52,356 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 77 transitions, 355 flow [2022-10-17 10:51:52,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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) [2022-10-17 10:51:52,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:51:52,357 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] [2022-10-17 10:51:52,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:51:52,357 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:51:52,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:52,358 INFO L85 PathProgramCache]: Analyzing trace with hash -623696959, now seen corresponding path program 1 times [2022-10-17 10:51:52,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:52,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662633001] [2022-10-17 10:51:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:52,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:51:52,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:52,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662633001] [2022-10-17 10:51:52,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662633001] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:52,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:52,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:51:52,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102699568] [2022-10-17 10:51:52,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:52,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:51:52,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:52,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:51:52,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:51:52,591 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-10-17 10:51:52,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 77 transitions, 355 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 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) [2022-10-17 10:51:52,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:51:52,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-10-17 10:51:52,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:51:52,697 INFO L130 PetriNetUnfolder]: 11/126 cut-off events. [2022-10-17 10:51:52,697 INFO L131 PetriNetUnfolder]: For 235/243 co-relation queries the response was YES. [2022-10-17 10:51:52,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 126 events. 11/126 cut-off events. For 235/243 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 247 event pairs, 0 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 310. Up to 13 conditions per place. [2022-10-17 10:51:52,699 INFO L137 encePairwiseOnDemand]: 80/89 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2022-10-17 10:51:52,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 79 transitions, 409 flow [2022-10-17 10:51:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:51:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:51:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 634 transitions. [2022-10-17 10:51:52,710 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7915106117353309 [2022-10-17 10:51:52,711 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 634 transitions. [2022-10-17 10:51:52,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 634 transitions. [2022-10-17 10:51:52,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:51:52,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 634 transitions. [2022-10-17 10:51:52,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.44444444444444) internal successors, (634), 9 states have internal predecessors, (634), 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) [2022-10-17 10:51:52,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 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) [2022-10-17 10:51:52,717 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 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) [2022-10-17 10:51:52,718 INFO L175 Difference]: Start difference. First operand has 139 places, 77 transitions, 355 flow. Second operand 9 states and 634 transitions. [2022-10-17 10:51:52,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 79 transitions, 409 flow [2022-10-17 10:51:52,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 79 transitions, 254 flow, removed 30 selfloop flow, removed 34 redundant places. [2022-10-17 10:51:52,722 INFO L231 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2022-10-17 10:51:52,722 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2022-10-17 10:51:52,723 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, 14 predicate places. [2022-10-17 10:51:52,723 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2022-10-17 10:51:52,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 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) [2022-10-17 10:51:52,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-10-17 10:51:52,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-10-17 10:51:52,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-10-17 10:51:52,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-10-17 10:51:52,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:51:52,728 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:52,732 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-10-17 10:51:52,732 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:51:52,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:51:52 BasicIcfg [2022-10-17 10:51:52,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:51:52,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:51:52,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:51:52,739 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:51:52,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:51:46" (3/4) ... [2022-10-17 10:51:52,743 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 10:51:52,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-10-17 10:51:52,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-10-17 10:51:52,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-10-17 10:51:52,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-10-17 10:51:52,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-10-17 10:51:52,756 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 10:51:52,756 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 10:51:52,790 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:51:52,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:51:52,791 INFO L158 Benchmark]: Toolchain (without parser) took 8087.96ms. Allocated memory was 102.8MB in the beginning and 211.8MB in the end (delta: 109.1MB). Free memory was 59.6MB in the beginning and 180.0MB in the end (delta: -120.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:51:52,791 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 77.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:51:52,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 678.48ms. Allocated memory is still 102.8MB. Free memory was 59.4MB in the beginning and 67.7MB in the end (delta: -8.3MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-10-17 10:51:52,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.89ms. Allocated memory is still 102.8MB. Free memory was 67.7MB in the beginning and 65.7MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 10:51:52,792 INFO L158 Benchmark]: Boogie Preprocessor took 59.21ms. Allocated memory is still 102.8MB. Free memory was 65.7MB in the beginning and 64.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:51:52,793 INFO L158 Benchmark]: RCFGBuilder took 536.61ms. Allocated memory is still 102.8MB. Free memory was 64.3MB in the beginning and 51.0MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 10:51:52,793 INFO L158 Benchmark]: TraceAbstraction took 6681.71ms. Allocated memory was 102.8MB in the beginning and 211.8MB in the end (delta: 109.1MB). Free memory was 50.3MB in the beginning and 182.1MB in the end (delta: -131.7MB). Peak memory consumption was 78.7MB. Max. memory is 16.1GB. [2022-10-17 10:51:52,794 INFO L158 Benchmark]: Witness Printer took 51.33ms. Allocated memory is still 211.8MB. Free memory was 182.1MB in the beginning and 180.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 10:51:52,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 77.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 678.48ms. Allocated memory is still 102.8MB. Free memory was 59.4MB in the beginning and 67.7MB in the end (delta: -8.3MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.89ms. Allocated memory is still 102.8MB. Free memory was 67.7MB in the beginning and 65.7MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.21ms. Allocated memory is still 102.8MB. Free memory was 65.7MB in the beginning and 64.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 536.61ms. Allocated memory is still 102.8MB. Free memory was 64.3MB in the beginning and 51.0MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6681.71ms. Allocated memory was 102.8MB in the beginning and 211.8MB in the end (delta: 109.1MB). Free memory was 50.3MB in the beginning and 182.1MB in the end (delta: -131.7MB). Peak memory consumption was 78.7MB. Max. memory is 16.1GB. * Witness Printer took 51.33ms. Allocated memory is still 211.8MB. Free memory was 182.1MB in the beginning and 180.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 358 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 358 mSDsluCounter, 560 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 563 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 562 IncrementalHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 130 mSDtfsCounter, 562 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=4, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 526 NumberOfCodeBlocks, 526 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 517 ConstructedInterpolants, 0 QuantifiedInterpolants, 2159 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-17 10:51:52,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_009cd7d6-8e6b-485d-ae85-87130965eadc/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE