./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R --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 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- 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-38b53e6 [2022-11-25 17:01:15,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:01:15,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:01:15,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:01:15,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:01:15,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:01:15,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:01:15,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:01:15,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:01:15,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:01:15,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:01:15,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:01:15,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:01:15,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:01:15,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:01:15,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:01:15,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:01:15,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:01:15,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:01:15,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:01:15,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:01:15,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:01:15,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:01:15,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:01:15,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:01:15,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:01:15,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:01:15,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:01:15,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:01:15,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:01:15,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:01:15,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:01:15,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:01:15,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:01:15,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:01:15,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:01:15,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:01:15,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:01:15,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:01:15,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:01:15,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:01:15,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:01:15,507 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:01:15,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:01:15,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:01:15,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:01:15,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:01:15,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:01:15,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:01:15,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:01:15,512 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:01:15,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:01:15,513 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:01:15,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:01:15,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:01:15,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:01:15,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:01:15,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:01:15,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:01:15,515 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:01:15,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:01:15,516 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:01:15,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:01:15,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:01:15,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:01:15,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:01:15,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:01:15,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:01:15,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:01:15,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:01:15,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:01:15,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:01:15,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:01:15,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:01:15,519 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:01:15,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:01:15,520 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2022-11-25 17:01:15,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:01:15,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:01:15,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:01:15,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:01:15,882 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:01:15,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2022-11-25 17:01:19,118 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:01:19,509 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:01:19,510 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/sv-benchmarks/c/pthread/triangular-longer-1.i [2022-11-25 17:01:19,524 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/data/937b1642a/bd405dd00b8944feb25bcfe59c04a8cd/FLAGea9cdcfd9 [2022-11-25 17:01:19,549 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/data/937b1642a/bd405dd00b8944feb25bcfe59c04a8cd [2022-11-25 17:01:19,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:01:19,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:01:19,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:01:19,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:01:19,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:01:19,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:01:19" (1/1) ... [2022-11-25 17:01:19,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ed1ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:19, skipping insertion in model container [2022-11-25 17:01:19,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:01:19" (1/1) ... [2022-11-25 17:01:19,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:01:19,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:01:20,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:01:20,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:01:20,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:01:20,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:01:20,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:01:20,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:01:20,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:01:20,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:01:20,059 WARN L237 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_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2022-11-25 17:01:20,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:01:20,078 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:01:20,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:01:20,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:01:20,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:01:20,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:01:20,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:01:20,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:01:20,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:01:20,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:01:20,162 WARN L237 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_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2022-11-25 17:01:20,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:01:20,211 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:01:20,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20 WrapperNode [2022-11-25 17:01:20,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:01:20,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:01:20,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:01:20,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:01:20,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,271 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-25 17:01:20,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:01:20,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:01:20,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:01:20,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:01:20,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,322 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:01:20,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:01:20,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:01:20,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:01:20,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (1/1) ... [2022-11-25 17:01:20,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:01:20,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:20,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:20,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:01:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-25 17:01:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-25 17:01:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-25 17:01:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-25 17:01:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:01:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:01:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:01:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:01:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:01:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:01:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:01:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:01:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:01:20,426 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:01:20,586 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:01:20,588 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:01:20,769 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:01:20,777 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:01:20,777 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:01:20,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:01:20 BoogieIcfgContainer [2022-11-25 17:01:20,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:01:20,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:01:20,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:01:20,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:01:20,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:01:19" (1/3) ... [2022-11-25 17:01:20,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd34166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:01:20, skipping insertion in model container [2022-11-25 17:01:20,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:20" (2/3) ... [2022-11-25 17:01:20,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd34166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:01:20, skipping insertion in model container [2022-11-25 17:01:20,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:01:20" (3/3) ... [2022-11-25 17:01:20,805 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2022-11-25 17:01:20,816 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:01:20,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:01:20,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:01:20,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:01:20,961 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:01:21,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2022-11-25 17:01:21,094 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-11-25 17:01:21,095 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:01:21,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-25 17:01:21,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 150 flow [2022-11-25 17:01:21,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 142 flow [2022-11-25 17:01:21,110 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:01:21,133 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 68 transitions, 142 flow [2022-11-25 17:01:21,150 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 68 transitions, 142 flow [2022-11-25 17:01:21,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 142 flow [2022-11-25 17:01:21,175 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-11-25 17:01:21,175 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:01:21,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-25 17:01:21,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 1122 [2022-11-25 17:01:24,185 INFO L134 LiptonReduction]: Checked pairs total: 1024 [2022-11-25 17:01:24,185 INFO L136 LiptonReduction]: Total number of compositions: 63 [2022-11-25 17:01:24,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:01:24,213 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;@179c5b43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:01:24,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-25 17:01:24,218 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2022-11-25 17:01:24,219 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:01:24,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:24,220 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:01:24,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:24,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:24,226 INFO L85 PathProgramCache]: Analyzing trace with hash -425316771, now seen corresponding path program 1 times [2022-11-25 17:01:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:24,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180756381] [2022-11-25 17:01:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:24,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:24,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:24,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180756381] [2022-11-25 17:01:24,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180756381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:01:24,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:01:24,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:01:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783835162] [2022-11-25 17:01:24,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:01:24,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:01:24,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:24,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:01:24,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:01:24,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2022-11-25 17:01:24,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:24,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:24,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2022-11-25 17:01:24,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:25,014 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2022-11-25 17:01:25,015 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:01:25,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 388 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2022-11-25 17:01:25,018 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2022-11-25 17:01:25,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2022-11-25 17:01:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:01:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:01:25,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2022-11-25 17:01:25,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4906015037593985 [2022-11-25 17:01:25,039 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 261 transitions. [2022-11-25 17:01:25,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 261 transitions. [2022-11-25 17:01:25,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:25,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 261 transitions. [2022-11-25 17:01:25,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,065 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,067 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 261 transitions. [2022-11-25 17:01:25,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2022-11-25 17:01:25,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:01:25,074 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2022-11-25 17:01:25,077 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-11-25 17:01:25,081 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2022-11-25 17:01:25,081 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2022-11-25 17:01:25,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:25,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:25,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:01:25,083 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:25,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash -707855405, now seen corresponding path program 1 times [2022-11-25 17:01:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:25,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438763337] [2022-11-25 17:01:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:25,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:25,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:25,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438763337] [2022-11-25 17:01:25,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438763337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:01:25,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:01:25,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:01:25,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681210219] [2022-11-25 17:01:25,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:01:25,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:01:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:01:25,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:01:25,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:25,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:25,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:25,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:25,481 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2022-11-25 17:01:25,481 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-11-25 17:01:25,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 659 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2022-11-25 17:01:25,489 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2022-11-25 17:01:25,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2022-11-25 17:01:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:01:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:01:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 380 transitions. [2022-11-25 17:01:25,499 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2022-11-25 17:01:25,500 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 380 transitions. [2022-11-25 17:01:25,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 380 transitions. [2022-11-25 17:01:25,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:25,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 380 transitions. [2022-11-25 17:01:25,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,513 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,513 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 380 transitions. [2022-11-25 17:01:25,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2022-11-25 17:01:25,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:01:25,518 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2022-11-25 17:01:25,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2022-11-25 17:01:25,519 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2022-11-25 17:01:25,519 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2022-11-25 17:01:25,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:25,520 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:25,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:01:25,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:25,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:25,525 INFO L85 PathProgramCache]: Analyzing trace with hash -707835875, now seen corresponding path program 2 times [2022-11-25 17:01:25,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:25,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468117413] [2022-11-25 17:01:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:25,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:25,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:25,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468117413] [2022-11-25 17:01:25,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468117413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:01:25,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:01:25,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:01:25,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425426056] [2022-11-25 17:01:25,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:01:25,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:01:25,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:01:25,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:01:25,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:25,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:25,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:25,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:25,891 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2022-11-25 17:01:25,891 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2022-11-25 17:01:25,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 635 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2022-11-25 17:01:25,893 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2022-11-25 17:01:25,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2022-11-25 17:01:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:01:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:01:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2022-11-25 17:01:25,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4781954887218045 [2022-11-25 17:01:25,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 318 transitions. [2022-11-25 17:01:25,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 318 transitions. [2022-11-25 17:01:25,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:25,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 318 transitions. [2022-11-25 17:01:25,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,905 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,905 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 318 transitions. [2022-11-25 17:01:25,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2022-11-25 17:01:25,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 17:01:25,913 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2022-11-25 17:01:25,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2022-11-25 17:01:25,915 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2022-11-25 17:01:25,915 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2022-11-25 17:01:25,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:25,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:25,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:01:25,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1979304464, now seen corresponding path program 1 times [2022-11-25 17:01:25,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:25,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870757714] [2022-11-25 17:01:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:25,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:26,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:26,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870757714] [2022-11-25 17:01:26,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870757714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:01:26,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:01:26,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:01:26,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060307649] [2022-11-25 17:01:26,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:01:26,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:01:26,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:26,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:01:26,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:01:26,090 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:26,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:26,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:26,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:26,213 INFO L130 PetriNetUnfolder]: 136/239 cut-off events. [2022-11-25 17:01:26,213 INFO L131 PetriNetUnfolder]: For 567/567 co-relation queries the response was YES. [2022-11-25 17:01:26,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 239 events. 136/239 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 803 event pairs, 31 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 842. Up to 101 conditions per place. [2022-11-25 17:01:26,215 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 30 selfloop transitions, 16 changer transitions 8/54 dead transitions. [2022-11-25 17:01:26,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 419 flow [2022-11-25 17:01:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:01:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:01:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 440 transitions. [2022-11-25 17:01:26,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47261009667024706 [2022-11-25 17:01:26,218 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 440 transitions. [2022-11-25 17:01:26,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 440 transitions. [2022-11-25 17:01:26,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:26,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 440 transitions. [2022-11-25 17:01:26,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.857142857142854) internal successors, (440), 7 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,223 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,223 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 7 states and 440 transitions. [2022-11-25 17:01:26,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 419 flow [2022-11-25 17:01:26,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 379 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-11-25 17:01:26,229 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 269 flow [2022-11-25 17:01:26,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2022-11-25 17:01:26,230 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 22 predicate places. [2022-11-25 17:01:26,230 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 269 flow [2022-11-25 17:01:26,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:26,231 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:26,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:01:26,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:26,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1979266334, now seen corresponding path program 2 times [2022-11-25 17:01:26,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:26,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020807845] [2022-11-25 17:01:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:26,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:26,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020807845] [2022-11-25 17:01:26,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020807845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:01:26,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:01:26,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:01:26,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536451690] [2022-11-25 17:01:26,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:01:26,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:01:26,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:26,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:01:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:01:26,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:26,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:26,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:26,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:26,527 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2022-11-25 17:01:26,527 INFO L131 PetriNetUnfolder]: For 782/782 co-relation queries the response was YES. [2022-11-25 17:01:26,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 303 events. 172/303 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1055 event pairs, 22 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2022-11-25 17:01:26,530 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 38 selfloop transitions, 22 changer transitions 3/63 dead transitions. [2022-11-25 17:01:26,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 519 flow [2022-11-25 17:01:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:01:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:01:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 502 transitions. [2022-11-25 17:01:26,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4718045112781955 [2022-11-25 17:01:26,533 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 502 transitions. [2022-11-25 17:01:26,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 502 transitions. [2022-11-25 17:01:26,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:26,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 502 transitions. [2022-11-25 17:01:26,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 62.75) internal successors, (502), 8 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,538 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,538 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 269 flow. Second operand 8 states and 502 transitions. [2022-11-25 17:01:26,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 519 flow [2022-11-25 17:01:26,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 495 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-25 17:01:26,544 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 375 flow [2022-11-25 17:01:26,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2022-11-25 17:01:26,545 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 32 predicate places. [2022-11-25 17:01:26,546 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 375 flow [2022-11-25 17:01:26,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:26,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:26,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:01:26,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:26,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:26,547 INFO L85 PathProgramCache]: Analyzing trace with hash -425050334, now seen corresponding path program 3 times [2022-11-25 17:01:26,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:26,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550527908] [2022-11-25 17:01:26,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:26,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:26,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550527908] [2022-11-25 17:01:26,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550527908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:01:26,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:01:26,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:01:26,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781530614] [2022-11-25 17:01:26,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:01:26,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:01:26,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:01:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:01:26,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:26,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:26,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:26,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:26,913 INFO L130 PetriNetUnfolder]: 168/295 cut-off events. [2022-11-25 17:01:26,913 INFO L131 PetriNetUnfolder]: For 1393/1393 co-relation queries the response was YES. [2022-11-25 17:01:26,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 295 events. 168/295 cut-off events. For 1393/1393 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1054 event pairs, 18 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1299. Up to 71 conditions per place. [2022-11-25 17:01:26,917 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 28 selfloop transitions, 27 changer transitions 10/65 dead transitions. [2022-11-25 17:01:26,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 651 flow [2022-11-25 17:01:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:01:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:01:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 501 transitions. [2022-11-25 17:01:26,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4708646616541353 [2022-11-25 17:01:26,921 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 501 transitions. [2022-11-25 17:01:26,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 501 transitions. [2022-11-25 17:01:26,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:26,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 501 transitions. [2022-11-25 17:01:26,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 62.625) internal successors, (501), 8 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,926 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,927 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 375 flow. Second operand 8 states and 501 transitions. [2022-11-25 17:01:26,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 651 flow [2022-11-25 17:01:26,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 617 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-25 17:01:26,936 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 476 flow [2022-11-25 17:01:26,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2022-11-25 17:01:26,937 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places. [2022-11-25 17:01:26,937 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 476 flow [2022-11-25 17:01:26,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:26,938 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:26,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:01:26,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:26,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1248327151, now seen corresponding path program 4 times [2022-11-25 17:01:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:26,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524305709] [2022-11-25 17:01:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:26,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:27,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:27,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524305709] [2022-11-25 17:01:27,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524305709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:27,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246328216] [2022-11-25 17:01:27,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:01:27,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:27,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:27,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:27,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:01:27,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:01:27,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:01:27,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:01:27,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:27,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:27,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246328216] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:27,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:27,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 17:01:27,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73729197] [2022-11-25 17:01:27,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:27,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:01:27,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:27,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:01:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:01:27,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:27,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 476 flow. Second operand has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:27,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:27,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:27,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:27,845 INFO L130 PetriNetUnfolder]: 192/343 cut-off events. [2022-11-25 17:01:27,845 INFO L131 PetriNetUnfolder]: For 2696/2696 co-relation queries the response was YES. [2022-11-25 17:01:27,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 343 events. 192/343 cut-off events. For 2696/2696 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1202 event pairs, 41 based on Foata normal form. 24/367 useless extension candidates. Maximal degree in co-relation 1662. Up to 181 conditions per place. [2022-11-25 17:01:27,850 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 45 selfloop transitions, 19 changer transitions 19/83 dead transitions. [2022-11-25 17:01:27,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 916 flow [2022-11-25 17:01:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:01:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:01:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 749 transitions. [2022-11-25 17:01:27,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2022-11-25 17:01:27,854 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 749 transitions. [2022-11-25 17:01:27,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 749 transitions. [2022-11-25 17:01:27,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:27,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 749 transitions. [2022-11-25 17:01:27,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 62.416666666666664) internal successors, (749), 12 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:27,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 133.0) internal successors, (1729), 13 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:27,861 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 133.0) internal successors, (1729), 13 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:27,861 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 476 flow. Second operand 12 states and 749 transitions. [2022-11-25 17:01:27,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 916 flow [2022-11-25 17:01:27,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 861 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-11-25 17:01:27,875 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 586 flow [2022-11-25 17:01:27,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=586, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2022-11-25 17:01:27,876 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2022-11-25 17:01:27,876 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 586 flow [2022-11-25 17:01:27,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:27,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:27,877 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:27,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:28,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:28,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:28,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:28,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1229558821, now seen corresponding path program 5 times [2022-11-25 17:01:28,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:28,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848154933] [2022-11-25 17:01:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:28,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:28,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:28,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848154933] [2022-11-25 17:01:28,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848154933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:28,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345919784] [2022-11-25 17:01:28,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:01:28,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:28,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:28,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:28,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:01:28,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:01:28,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:01:28,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:01:28,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:28,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:28,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345919784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:28,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:28,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 17:01:28,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974583404] [2022-11-25 17:01:28,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:28,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:01:28,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:28,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:01:28,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:01:28,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:28,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 586 flow. Second operand has 13 states, 13 states have (on average 58.92307692307692) internal successors, (766), 13 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:28,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:28,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:28,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:29,297 INFO L130 PetriNetUnfolder]: 254/459 cut-off events. [2022-11-25 17:01:29,297 INFO L131 PetriNetUnfolder]: For 7021/7021 co-relation queries the response was YES. [2022-11-25 17:01:29,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 459 events. 254/459 cut-off events. For 7021/7021 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1800 event pairs, 30 based on Foata normal form. 28/487 useless extension candidates. Maximal degree in co-relation 2577. Up to 131 conditions per place. [2022-11-25 17:01:29,302 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 46 selfloop transitions, 44 changer transitions 29/119 dead transitions. [2022-11-25 17:01:29,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 1453 flow [2022-11-25 17:01:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 17:01:29,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-25 17:01:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1123 transitions. [2022-11-25 17:01:29,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4690893901420217 [2022-11-25 17:01:29,307 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1123 transitions. [2022-11-25 17:01:29,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1123 transitions. [2022-11-25 17:01:29,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:29,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1123 transitions. [2022-11-25 17:01:29,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 62.388888888888886) internal successors, (1123), 18 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:29,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 133.0) internal successors, (2527), 19 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:29,317 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 133.0) internal successors, (2527), 19 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:29,318 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 586 flow. Second operand 18 states and 1123 transitions. [2022-11-25 17:01:29,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 1453 flow [2022-11-25 17:01:29,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 1310 flow, removed 59 selfloop flow, removed 5 redundant places. [2022-11-25 17:01:29,345 INFO L231 Difference]: Finished difference. Result has 91 places, 66 transitions, 944 flow [2022-11-25 17:01:29,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=944, PETRI_PLACES=91, PETRI_TRANSITIONS=66} [2022-11-25 17:01:29,349 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 73 predicate places. [2022-11-25 17:01:29,349 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 66 transitions, 944 flow [2022-11-25 17:01:29,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 58.92307692307692) internal successors, (766), 13 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:29,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:29,350 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:29,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:29,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 17:01:29,556 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash 595583364, now seen corresponding path program 6 times [2022-11-25 17:01:29,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:29,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124354730] [2022-11-25 17:01:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:29,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:29,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124354730] [2022-11-25 17:01:29,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124354730] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:29,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489203773] [2022-11-25 17:01:29,704 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:01:29,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:29,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:29,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:29,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:01:29,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-25 17:01:29,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:01:29,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:01:29,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:29,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:30,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489203773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:30,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:30,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 17:01:30,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163662873] [2022-11-25 17:01:30,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:30,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:01:30,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:01:30,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:01:30,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:30,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 944 flow. Second operand has 14 states, 14 states have (on average 58.785714285714285) internal successors, (823), 14 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:30,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:30,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:30,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:30,577 INFO L130 PetriNetUnfolder]: 338/619 cut-off events. [2022-11-25 17:01:30,577 INFO L131 PetriNetUnfolder]: For 15328/15328 co-relation queries the response was YES. [2022-11-25 17:01:30,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 619 events. 338/619 cut-off events. For 15328/15328 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2651 event pairs, 23 based on Foata normal form. 24/643 useless extension candidates. Maximal degree in co-relation 4478. Up to 207 conditions per place. [2022-11-25 17:01:30,585 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 56 selfloop transitions, 60 changer transitions 19/135 dead transitions. [2022-11-25 17:01:30,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 135 transitions, 2183 flow [2022-11-25 17:01:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 17:01:30,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-25 17:01:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1118 transitions. [2022-11-25 17:01:30,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.467000835421888 [2022-11-25 17:01:30,590 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1118 transitions. [2022-11-25 17:01:30,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1118 transitions. [2022-11-25 17:01:30,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:30,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1118 transitions. [2022-11-25 17:01:30,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 62.111111111111114) internal successors, (1118), 18 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:30,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 133.0) internal successors, (2527), 19 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:30,603 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 133.0) internal successors, (2527), 19 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:30,603 INFO L175 Difference]: Start difference. First operand has 91 places, 66 transitions, 944 flow. Second operand 18 states and 1118 transitions. [2022-11-25 17:01:30,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 135 transitions, 2183 flow [2022-11-25 17:01:30,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 135 transitions, 1903 flow, removed 130 selfloop flow, removed 4 redundant places. [2022-11-25 17:01:30,694 INFO L231 Difference]: Finished difference. Result has 112 places, 82 transitions, 1311 flow [2022-11-25 17:01:30,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1311, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2022-11-25 17:01:30,695 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 94 predicate places. [2022-11-25 17:01:30,696 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 1311 flow [2022-11-25 17:01:30,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 58.785714285714285) internal successors, (823), 14 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:30,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:30,697 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:30,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:30,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:30,903 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:30,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash -450777024, now seen corresponding path program 7 times [2022-11-25 17:01:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:30,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160061641] [2022-11-25 17:01:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:31,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:31,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160061641] [2022-11-25 17:01:31,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160061641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:31,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048670140] [2022-11-25 17:01:31,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:01:31,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:31,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:31,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:31,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:01:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:31,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:01:31,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:31,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:31,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048670140] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:31,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:31,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 17:01:31,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982788094] [2022-11-25 17:01:31,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:31,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:01:31,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:01:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:01:31,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:31,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 1311 flow. Second operand has 14 states, 14 states have (on average 58.785714285714285) internal successors, (823), 14 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:31,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:31,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:31,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:32,033 INFO L130 PetriNetUnfolder]: 398/727 cut-off events. [2022-11-25 17:01:32,033 INFO L131 PetriNetUnfolder]: For 30308/30308 co-relation queries the response was YES. [2022-11-25 17:01:32,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 727 events. 398/727 cut-off events. For 30308/30308 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3222 event pairs, 12 based on Foata normal form. 28/755 useless extension candidates. Maximal degree in co-relation 6003. Up to 246 conditions per place. [2022-11-25 17:01:32,043 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 46 selfloop transitions, 86 changer transitions 38/170 dead transitions. [2022-11-25 17:01:32,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 170 transitions, 3081 flow [2022-11-25 17:01:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 17:01:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-25 17:01:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1370 transitions. [2022-11-25 17:01:32,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46821599453178403 [2022-11-25 17:01:32,049 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1370 transitions. [2022-11-25 17:01:32,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1370 transitions. [2022-11-25 17:01:32,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:32,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1370 transitions. [2022-11-25 17:01:32,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 62.27272727272727) internal successors, (1370), 22 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:32,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 133.0) internal successors, (3059), 23 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:32,061 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 133.0) internal successors, (3059), 23 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:32,062 INFO L175 Difference]: Start difference. First operand has 112 places, 82 transitions, 1311 flow. Second operand 22 states and 1370 transitions. [2022-11-25 17:01:32,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 170 transitions, 3081 flow [2022-11-25 17:01:32,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 170 transitions, 2497 flow, removed 252 selfloop flow, removed 12 redundant places. [2022-11-25 17:01:32,127 INFO L231 Difference]: Finished difference. Result has 132 places, 103 transitions, 1774 flow [2022-11-25 17:01:32,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1774, PETRI_PLACES=132, PETRI_TRANSITIONS=103} [2022-11-25 17:01:32,128 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 114 predicate places. [2022-11-25 17:01:32,128 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 103 transitions, 1774 flow [2022-11-25 17:01:32,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 58.785714285714285) internal successors, (823), 14 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:32,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:32,129 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:32,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:32,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:32,335 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:32,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:32,336 INFO L85 PathProgramCache]: Analyzing trace with hash 545907094, now seen corresponding path program 8 times [2022-11-25 17:01:32,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:32,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015554986] [2022-11-25 17:01:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:32,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:32,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:32,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015554986] [2022-11-25 17:01:32,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015554986] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:32,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427130520] [2022-11-25 17:01:32,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:01:32,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:32,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:32,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:32,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:01:32,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:01:32,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:01:32,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 17:01:32,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:32,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:32,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427130520] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:32,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:32,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-25 17:01:32,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467977269] [2022-11-25 17:01:32,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:32,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 17:01:32,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:32,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 17:01:32,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:01:33,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:33,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 103 transitions, 1774 flow. Second operand has 23 states, 23 states have (on average 58.47826086956522) internal successors, (1345), 23 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:33,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:33,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:33,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:34,198 INFO L130 PetriNetUnfolder]: 546/975 cut-off events. [2022-11-25 17:01:34,198 INFO L131 PetriNetUnfolder]: For 45976/45976 co-relation queries the response was YES. [2022-11-25 17:01:34,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9009 conditions, 975 events. 546/975 cut-off events. For 45976/45976 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4267 event pairs, 15 based on Foata normal form. 36/1011 useless extension candidates. Maximal degree in co-relation 8946. Up to 338 conditions per place. [2022-11-25 17:01:34,211 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 60 selfloop transitions, 123 changer transitions 66/249 dead transitions. [2022-11-25 17:01:34,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 249 transitions, 5042 flow [2022-11-25 17:01:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-25 17:01:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-25 17:01:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2234 transitions. [2022-11-25 17:01:34,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4665831244778613 [2022-11-25 17:01:34,222 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2234 transitions. [2022-11-25 17:01:34,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2234 transitions. [2022-11-25 17:01:34,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:34,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2234 transitions. [2022-11-25 17:01:34,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 62.05555555555556) internal successors, (2234), 36 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:34,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 133.0) internal successors, (4921), 37 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:34,249 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 133.0) internal successors, (4921), 37 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:34,249 INFO L175 Difference]: Start difference. First operand has 132 places, 103 transitions, 1774 flow. Second operand 36 states and 2234 transitions. [2022-11-25 17:01:34,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 249 transitions, 5042 flow [2022-11-25 17:01:34,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 249 transitions, 4403 flow, removed 281 selfloop flow, removed 14 redundant places. [2022-11-25 17:01:34,369 INFO L231 Difference]: Finished difference. Result has 171 places, 140 transitions, 2813 flow [2022-11-25 17:01:34,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2813, PETRI_PLACES=171, PETRI_TRANSITIONS=140} [2022-11-25 17:01:34,370 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 153 predicate places. [2022-11-25 17:01:34,370 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 140 transitions, 2813 flow [2022-11-25 17:01:34,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 58.47826086956522) internal successors, (1345), 23 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:34,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:34,372 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:34,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:34,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 17:01:34,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:34,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:34,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1343810350, now seen corresponding path program 9 times [2022-11-25 17:01:34,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:34,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530947892] [2022-11-25 17:01:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:34,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:35,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:35,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530947892] [2022-11-25 17:01:35,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530947892] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:35,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347393580] [2022-11-25 17:01:35,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:01:35,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:35,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:35,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:35,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:01:35,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-25 17:01:35,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:01:35,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 17:01:35,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:35,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:35,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347393580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:35,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:35,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2022-11-25 17:01:35,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170658305] [2022-11-25 17:01:35,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:35,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 17:01:35,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:35,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 17:01:35,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2022-11-25 17:01:35,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:35,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 140 transitions, 2813 flow. Second operand has 26 states, 26 states have (on average 58.46153846153846) internal successors, (1520), 26 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:35,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:35,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:35,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:36,872 INFO L130 PetriNetUnfolder]: 674/1231 cut-off events. [2022-11-25 17:01:36,872 INFO L131 PetriNetUnfolder]: For 98487/98487 co-relation queries the response was YES. [2022-11-25 17:01:36,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14126 conditions, 1231 events. 674/1231 cut-off events. For 98487/98487 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5606 event pairs, 102 based on Foata normal form. 32/1263 useless extension candidates. Maximal degree in co-relation 14050. Up to 466 conditions per place. [2022-11-25 17:01:36,891 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 106 selfloop transitions, 98 changer transitions 53/257 dead transitions. [2022-11-25 17:01:36,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 257 transitions, 6419 flow [2022-11-25 17:01:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 17:01:36,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-25 17:01:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1790 transitions. [2022-11-25 17:01:36,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.464091262639357 [2022-11-25 17:01:36,896 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1790 transitions. [2022-11-25 17:01:36,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1790 transitions. [2022-11-25 17:01:36,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:36,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1790 transitions. [2022-11-25 17:01:36,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 61.724137931034484) internal successors, (1790), 29 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:36,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 133.0) internal successors, (3990), 30 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:36,969 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 133.0) internal successors, (3990), 30 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:36,969 INFO L175 Difference]: Start difference. First operand has 171 places, 140 transitions, 2813 flow. Second operand 29 states and 1790 transitions. [2022-11-25 17:01:36,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 257 transitions, 6419 flow [2022-11-25 17:01:37,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 257 transitions, 4932 flow, removed 711 selfloop flow, removed 13 redundant places. [2022-11-25 17:01:37,302 INFO L231 Difference]: Finished difference. Result has 196 places, 172 transitions, 3163 flow [2022-11-25 17:01:37,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3163, PETRI_PLACES=196, PETRI_TRANSITIONS=172} [2022-11-25 17:01:37,303 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 178 predicate places. [2022-11-25 17:01:37,303 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 172 transitions, 3163 flow [2022-11-25 17:01:37,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 58.46153846153846) internal successors, (1520), 26 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:37,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:37,304 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:37,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 17:01:37,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 17:01:37,511 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:37,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:37,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1673232662, now seen corresponding path program 10 times [2022-11-25 17:01:37,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:37,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016913956] [2022-11-25 17:01:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:37,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:37,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:37,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016913956] [2022-11-25 17:01:37,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016913956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:37,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995906224] [2022-11-25 17:01:37,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:01:37,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:37,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:37,902 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:37,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:01:38,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:01:38,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:01:38,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 17:01:38,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:38,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:38,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995906224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:38,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:38,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2022-11-25 17:01:38,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646928491] [2022-11-25 17:01:38,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:38,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-25 17:01:38,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:38,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-25 17:01:38,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2022-11-25 17:01:38,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:38,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 172 transitions, 3163 flow. Second operand has 30 states, 30 states have (on average 58.43333333333333) internal successors, (1753), 30 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:38,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:38,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:38,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:40,344 INFO L130 PetriNetUnfolder]: 882/1643 cut-off events. [2022-11-25 17:01:40,344 INFO L131 PetriNetUnfolder]: For 171577/171577 co-relation queries the response was YES. [2022-11-25 17:01:40,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19124 conditions, 1643 events. 882/1643 cut-off events. For 171577/171577 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 8153 event pairs, 53 based on Foata normal form. 32/1675 useless extension candidates. Maximal degree in co-relation 19042. Up to 670 conditions per place. [2022-11-25 17:01:40,380 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 80 selfloop transitions, 186 changer transitions 67/333 dead transitions. [2022-11-25 17:01:40,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 333 transitions, 7514 flow [2022-11-25 17:01:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-25 17:01:40,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-25 17:01:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2226 transitions. [2022-11-25 17:01:40,387 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2022-11-25 17:01:40,387 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2226 transitions. [2022-11-25 17:01:40,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2226 transitions. [2022-11-25 17:01:40,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:40,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2226 transitions. [2022-11-25 17:01:40,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 61.833333333333336) internal successors, (2226), 36 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:40,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 133.0) internal successors, (4921), 37 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:40,406 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 133.0) internal successors, (4921), 37 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:40,406 INFO L175 Difference]: Start difference. First operand has 196 places, 172 transitions, 3163 flow. Second operand 36 states and 2226 transitions. [2022-11-25 17:01:40,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 333 transitions, 7514 flow [2022-11-25 17:01:40,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 333 transitions, 6838 flow, removed 304 selfloop flow, removed 11 redundant places. [2022-11-25 17:01:40,826 INFO L231 Difference]: Finished difference. Result has 231 places, 227 transitions, 4579 flow [2022-11-25 17:01:40,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4579, PETRI_PLACES=231, PETRI_TRANSITIONS=227} [2022-11-25 17:01:40,827 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 213 predicate places. [2022-11-25 17:01:40,828 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 227 transitions, 4579 flow [2022-11-25 17:01:40,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 58.43333333333333) internal successors, (1753), 30 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:40,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:40,829 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:40,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 17:01:41,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:41,035 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:41,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2106732648, now seen corresponding path program 11 times [2022-11-25 17:01:41,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:41,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930313108] [2022-11-25 17:01:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:41,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930313108] [2022-11-25 17:01:41,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930313108] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148312990] [2022-11-25 17:01:41,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:01:41,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:41,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:41,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:41,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:01:41,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-25 17:01:41,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:01:41,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 17:01:41,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:41,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:42,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148312990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:42,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:42,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2022-11-25 17:01:42,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536603698] [2022-11-25 17:01:42,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:42,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 17:01:42,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 17:01:42,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2022-11-25 17:01:42,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:42,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 227 transitions, 4579 flow. Second operand has 31 states, 31 states have (on average 58.38709677419355) internal successors, (1810), 31 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:42,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:42,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:42,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:44,376 INFO L130 PetriNetUnfolder]: 1026/1899 cut-off events. [2022-11-25 17:01:44,376 INFO L131 PetriNetUnfolder]: For 267622/267622 co-relation queries the response was YES. [2022-11-25 17:01:44,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25004 conditions, 1899 events. 1026/1899 cut-off events. For 267622/267622 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9517 event pairs, 10 based on Foata normal form. 36/1935 useless extension candidates. Maximal degree in co-relation 24910. Up to 782 conditions per place. [2022-11-25 17:01:44,467 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 69 selfloop transitions, 244 changer transitions 79/392 dead transitions. [2022-11-25 17:01:44,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 392 transitions, 10125 flow [2022-11-25 17:01:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-25 17:01:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-25 17:01:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2662 transitions. [2022-11-25 17:01:44,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4654659905577898 [2022-11-25 17:01:44,477 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2662 transitions. [2022-11-25 17:01:44,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2662 transitions. [2022-11-25 17:01:44,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:44,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2662 transitions. [2022-11-25 17:01:44,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 61.906976744186046) internal successors, (2662), 43 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:44,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 133.0) internal successors, (5852), 44 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:44,509 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 133.0) internal successors, (5852), 44 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:44,510 INFO L175 Difference]: Start difference. First operand has 231 places, 227 transitions, 4579 flow. Second operand 43 states and 2662 transitions. [2022-11-25 17:01:44,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 392 transitions, 10125 flow [2022-11-25 17:01:44,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 392 transitions, 8993 flow, removed 515 selfloop flow, removed 14 redundant places. [2022-11-25 17:01:45,004 INFO L231 Difference]: Finished difference. Result has 272 places, 264 transitions, 5830 flow [2022-11-25 17:01:45,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=3777, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5830, PETRI_PLACES=272, PETRI_TRANSITIONS=264} [2022-11-25 17:01:45,005 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 254 predicate places. [2022-11-25 17:01:45,005 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 264 transitions, 5830 flow [2022-11-25 17:01:45,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 58.38709677419355) internal successors, (1810), 31 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:45,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:45,006 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:45,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:45,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:45,207 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:45,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash 295631775, now seen corresponding path program 12 times [2022-11-25 17:01:45,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:45,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378888950] [2022-11-25 17:01:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:45,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:45,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:45,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378888950] [2022-11-25 17:01:45,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378888950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:45,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641728386] [2022-11-25 17:01:45,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:01:45,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:45,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:45,670 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:45,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:01:45,788 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-11-25 17:01:45,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:01:45,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:01:45,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:45,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:46,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641728386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:46,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:46,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2022-11-25 17:01:46,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870602974] [2022-11-25 17:01:46,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:46,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-25 17:01:46,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-25 17:01:46,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2022-11-25 17:01:46,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:46,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 264 transitions, 5830 flow. Second operand has 29 states, 29 states have (on average 58.41379310344828) internal successors, (1694), 29 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:46,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:46,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:46,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:48,261 INFO L130 PetriNetUnfolder]: 1190/2195 cut-off events. [2022-11-25 17:01:48,261 INFO L131 PetriNetUnfolder]: For 436201/436201 co-relation queries the response was YES. [2022-11-25 17:01:48,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33438 conditions, 2195 events. 1190/2195 cut-off events. For 436201/436201 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11154 event pairs, 13 based on Foata normal form. 32/2227 useless extension candidates. Maximal degree in co-relation 33330. Up to 902 conditions per place. [2022-11-25 17:01:48,294 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 89 selfloop transitions, 281 changer transitions 91/461 dead transitions. [2022-11-25 17:01:48,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 461 transitions, 13541 flow [2022-11-25 17:01:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-25 17:01:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-25 17:01:48,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3217 transitions. [2022-11-25 17:01:48,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4651532677848467 [2022-11-25 17:01:48,301 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3217 transitions. [2022-11-25 17:01:48,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3217 transitions. [2022-11-25 17:01:48,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:48,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3217 transitions. [2022-11-25 17:01:48,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 61.86538461538461) internal successors, (3217), 52 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:48,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 133.0) internal successors, (7049), 53 states have internal predecessors, (7049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:48,320 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 133.0) internal successors, (7049), 53 states have internal predecessors, (7049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:48,320 INFO L175 Difference]: Start difference. First operand has 272 places, 264 transitions, 5830 flow. Second operand 52 states and 3217 transitions. [2022-11-25 17:01:48,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 461 transitions, 13541 flow [2022-11-25 17:01:49,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 461 transitions, 12015 flow, removed 669 selfloop flow, removed 20 redundant places. [2022-11-25 17:01:49,375 INFO L231 Difference]: Finished difference. Result has 319 places, 302 transitions, 7290 flow [2022-11-25 17:01:49,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=4650, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=7290, PETRI_PLACES=319, PETRI_TRANSITIONS=302} [2022-11-25 17:01:49,376 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 301 predicate places. [2022-11-25 17:01:49,376 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 302 transitions, 7290 flow [2022-11-25 17:01:49,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.41379310344828) internal successors, (1694), 29 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:49,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:49,378 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:49,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:49,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 17:01:49,584 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:49,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:49,585 INFO L85 PathProgramCache]: Analyzing trace with hash -861915974, now seen corresponding path program 13 times [2022-11-25 17:01:49,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:49,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967714007] [2022-11-25 17:01:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:49,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:50,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:50,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967714007] [2022-11-25 17:01:50,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967714007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:50,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380307912] [2022-11-25 17:01:50,104 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:01:50,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:50,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:50,106 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:50,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:01:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:50,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 17:01:50,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:50,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:50,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380307912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:50,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:50,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 23 [2022-11-25 17:01:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815979351] [2022-11-25 17:01:50,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:50,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 17:01:50,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:50,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 17:01:50,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-11-25 17:01:50,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:01:50,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 302 transitions, 7290 flow. Second operand has 25 states, 25 states have (on average 58.2) internal successors, (1455), 25 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:50,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:50,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:01:50,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:53,121 INFO L130 PetriNetUnfolder]: 1242/2287 cut-off events. [2022-11-25 17:01:53,121 INFO L131 PetriNetUnfolder]: For 601656/601656 co-relation queries the response was YES. [2022-11-25 17:01:53,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38944 conditions, 2287 events. 1242/2287 cut-off events. For 601656/601656 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11456 event pairs, 39 based on Foata normal form. 8/2295 useless extension candidates. Maximal degree in co-relation 38821. Up to 934 conditions per place. [2022-11-25 17:01:53,156 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 88 selfloop transitions, 279 changer transitions 84/451 dead transitions. [2022-11-25 17:01:53,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 451 transitions, 13861 flow [2022-11-25 17:01:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-25 17:01:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-25 17:01:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2780 transitions. [2022-11-25 17:01:53,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644945697577276 [2022-11-25 17:01:53,163 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2780 transitions. [2022-11-25 17:01:53,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2780 transitions. [2022-11-25 17:01:53,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:53,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2780 transitions. [2022-11-25 17:01:53,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 61.77777777777778) internal successors, (2780), 45 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:53,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 133.0) internal successors, (6118), 46 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:53,179 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 133.0) internal successors, (6118), 46 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:53,180 INFO L175 Difference]: Start difference. First operand has 319 places, 302 transitions, 7290 flow. Second operand 45 states and 2780 transitions. [2022-11-25 17:01:53,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 451 transitions, 13861 flow [2022-11-25 17:01:54,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 451 transitions, 11566 flow, removed 970 selfloop flow, removed 33 redundant places. [2022-11-25 17:01:54,645 INFO L231 Difference]: Finished difference. Result has 337 places, 315 transitions, 6715 flow [2022-11-25 17:01:54,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=5675, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6715, PETRI_PLACES=337, PETRI_TRANSITIONS=315} [2022-11-25 17:01:54,646 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 319 predicate places. [2022-11-25 17:01:54,646 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 315 transitions, 6715 flow [2022-11-25 17:01:54,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 58.2) internal successors, (1455), 25 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:54,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:54,647 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:54,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:54,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:54,853 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:01:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash -949569457, now seen corresponding path program 14 times [2022-11-25 17:01:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:54,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930412790] [2022-11-25 17:01:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:54,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:55,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:55,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930412790] [2022-11-25 17:01:55,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930412790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:55,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560001448] [2022-11-25 17:01:55,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:01:55,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:55,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:55,044 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:55,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:01:55,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:01:55,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:01:55,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:01:55,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:55,210 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:55,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:01:55,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560001448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:01:55,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:01:55,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2022-11-25 17:01:55,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819218914] [2022-11-25 17:01:55,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:01:55,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:01:55,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:55,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:01:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:01:55,245 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 133 [2022-11-25 17:01:55,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 315 transitions, 6715 flow. Second operand has 13 states, 13 states have (on average 62.23076923076923) internal successors, (809), 13 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:55,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:55,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 133 [2022-11-25 17:01:55,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:58,686 INFO L130 PetriNetUnfolder]: 5185/8225 cut-off events. [2022-11-25 17:01:58,686 INFO L131 PetriNetUnfolder]: For 2136742/2136742 co-relation queries the response was YES. [2022-11-25 17:01:58,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123697 conditions, 8225 events. 5185/8225 cut-off events. For 2136742/2136742 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 47254 event pairs, 110 based on Foata normal form. 464/8689 useless extension candidates. Maximal degree in co-relation 123567. Up to 4078 conditions per place. [2022-11-25 17:01:58,780 INFO L137 encePairwiseOnDemand]: 130/133 looper letters, 0 selfloop transitions, 0 changer transitions 1521/1521 dead transitions. [2022-11-25 17:01:58,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1521 transitions, 33095 flow [2022-11-25 17:01:58,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:01:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 17:01:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 877 transitions. [2022-11-25 17:01:58,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5072296124927704 [2022-11-25 17:01:58,783 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 877 transitions. [2022-11-25 17:01:58,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 877 transitions. [2022-11-25 17:01:58,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:58,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 877 transitions. [2022-11-25 17:01:58,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.46153846153847) internal successors, (877), 13 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:58,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 133.0) internal successors, (1862), 14 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:58,789 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 133.0) internal successors, (1862), 14 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:58,789 INFO L175 Difference]: Start difference. First operand has 337 places, 315 transitions, 6715 flow. Second operand 13 states and 877 transitions. [2022-11-25 17:01:58,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1521 transitions, 33095 flow [2022-11-25 17:02:04,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1521 transitions, 29718 flow, removed 124 selfloop flow, removed 49 redundant places. [2022-11-25 17:02:04,193 INFO L231 Difference]: Finished difference. Result has 298 places, 0 transitions, 0 flow [2022-11-25 17:02:04,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=298, PETRI_TRANSITIONS=0} [2022-11-25 17:02:04,194 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 280 predicate places. [2022-11-25 17:02:04,195 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 0 transitions, 0 flow [2022-11-25 17:02:04,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.23076923076923) internal successors, (809), 13 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:04,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-25 17:02:04,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-25 17:02:04,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-25 17:02:04,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:02:04,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 17:02:04,405 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1] [2022-11-25 17:02:04,409 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:02:04,409 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:02:04,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:02:04 BasicIcfg [2022-11-25 17:02:04,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:02:04,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:02:04,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:02:04,414 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:02:04,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:01:20" (3/4) ... [2022-11-25 17:02:04,417 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:02:04,424 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-25 17:02:04,424 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-25 17:02:04,428 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-25 17:02:04,428 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-25 17:02:04,429 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:02:04,429 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:02:04,472 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:02:04,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:02:04,473 INFO L158 Benchmark]: Toolchain (without parser) took 44920.04ms. Allocated memory was 142.6MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 111.6MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 598.8MB. Max. memory is 16.1GB. [2022-11-25 17:02:04,473 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:02:04,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 659.30ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 91.2MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 17:02:04,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.77ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 89.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:02:04,475 INFO L158 Benchmark]: Boogie Preprocessor took 52.58ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 87.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:02:04,475 INFO L158 Benchmark]: RCFGBuilder took 466.93ms. Allocated memory is still 142.6MB. Free memory was 87.8MB in the beginning and 75.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:02:04,475 INFO L158 Benchmark]: TraceAbstraction took 43615.37ms. Allocated memory was 142.6MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 74.8MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 709.0MB. Max. memory is 16.1GB. [2022-11-25 17:02:04,476 INFO L158 Benchmark]: Witness Printer took 58.97ms. Allocated memory is still 2.5GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:02:04,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 659.30ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 91.2MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.77ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 89.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.58ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 87.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 466.93ms. Allocated memory is still 142.6MB. Free memory was 87.8MB in the beginning and 75.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 43615.37ms. Allocated memory was 142.6MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 74.8MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 709.0MB. Max. memory is 16.1GB. * Witness Printer took 58.97ms. Allocated memory is still 2.5GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 70 PlacesBefore, 18 PlacesAfterwards, 68 TransitionsBefore, 14 TransitionsAfterwards, 1122 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1024 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 904, independent: 878, independent conditional: 0, independent unconditional: 878, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 751, independent: 736, independent conditional: 0, independent unconditional: 736, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 751, independent: 736, independent conditional: 0, independent unconditional: 736, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 61, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 904, independent: 142, independent conditional: 0, independent unconditional: 142, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 751, unknown conditional: 0, unknown unconditional: 751] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 43.4s, OverallIterations: 17, TraceHistogramMax: 11, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 28.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4187 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4078 mSDsluCounter, 619 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 588 mSDsCounter, 578 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4571 IncrementalHoareTripleChecker+Invalid, 5149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 578 mSolverCounterUnsat, 31 mSDtfsCounter, 4571 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 804 GetRequests, 237 SyntacticMatches, 58 SemanticMatches, 509 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7566 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7290occurred in iteration=15, InterpolantAutomatonStates: 362, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 472 NumberOfCodeBlocks, 472 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 SizeOfPredicates, 101 NumberOfNonLiveVariables, 1820 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 38 InterpolantComputations, 7 PerfectInterpolantSequences, 190/1094 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:02:04,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb5b1e2-e4b8-4332-b454-c4762385d2fe/bin/uautomizer-ZsLfNo2U6R/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