./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8 --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 eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --- 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-2329fc7 [2022-12-13 21:37:19,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:37:19,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:37:20,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:37:20,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:37:20,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:37:20,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:37:20,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:37:20,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:37:20,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:37:20,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:37:20,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:37:20,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:37:20,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:37:20,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:37:20,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:37:20,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:37:20,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:37:20,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:37:20,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:37:20,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:37:20,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:37:20,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:37:20,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:37:20,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:37:20,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:37:20,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:37:20,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:37:20,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:37:20,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:37:20,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:37:20,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:37:20,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:37:20,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:37:20,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:37:20,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:37:20,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:37:20,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:37:20,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:37:20,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:37:20,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:37:20,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:37:20,050 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:37:20,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:37:20,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:37:20,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:37:20,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:37:20,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:37:20,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:37:20,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:37:20,053 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:37:20,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:37:20,053 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:37:20,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:37:20,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:37:20,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:37:20,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:37:20,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:37:20,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:37:20,054 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:37:20,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:37:20,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:37:20,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:37:20,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:37:20,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:37:20,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:37:20,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:37:20,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:37:20,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:37:20,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:37:20,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:37:20,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:37:20,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:37:20,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:37:20,056 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:37:20,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:37:20,057 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:37:20,057 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_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc [2022-12-13 21:37:20,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:37:20,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:37:20,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:37:20,271 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:37:20,272 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:37:20,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-12-13 21:37:22,845 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:37:23,023 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:37:23,023 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-12-13 21:37:23,030 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/data/65ec69520/92b676f948304b608d8f1ee799da676f/FLAG9d7e6d7cd [2022-12-13 21:37:23,448 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/data/65ec69520/92b676f948304b608d8f1ee799da676f [2022-12-13 21:37:23,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:37:23,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:37:23,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:37:23,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:37:23,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:37:23,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c57dcb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23, skipping insertion in model container [2022-12-13 21:37:23,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:37:23,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:37:23,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:37:23,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:37:23,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:37:23,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:37:23,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:37:23,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:37:23,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:37:23,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:37:23,605 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_3f36391c-e9e0-4bf1-b6d3-946035c7597a/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-12-13 21:37:23,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:37:23,619 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:37:23,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:37:23,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:37:23,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:37:23,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:37:23,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:37:23,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:37:23,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:37:23,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:37:23,636 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_3f36391c-e9e0-4bf1-b6d3-946035c7597a/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-12-13 21:37:23,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:37:23,648 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:37:23,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23 WrapperNode [2022-12-13 21:37:23,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:37:23,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:37:23,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:37:23,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:37:23,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,675 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 121 [2022-12-13 21:37:23,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:37:23,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:37:23,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:37:23,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:37:23,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,697 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:37:23,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:37:23,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:37:23,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:37:23,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (1/1) ... [2022-12-13 21:37:23,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:37:23,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:23,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:37:23,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:37:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:37:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:37:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:37:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:37:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:37:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:37:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:37:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:37:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 21:37:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 21:37:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:37:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 21:37:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 21:37:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:37:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:37:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:37:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:37:23,757 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:37:23,838 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:37:23,839 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:37:24,063 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:37:24,088 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:37:24,089 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 21:37:24,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:37:24 BoogieIcfgContainer [2022-12-13 21:37:24,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:37:24,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:37:24,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:37:24,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:37:24,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:37:23" (1/3) ... [2022-12-13 21:37:24,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1d5f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:37:24, skipping insertion in model container [2022-12-13 21:37:24,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:37:23" (2/3) ... [2022-12-13 21:37:24,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1d5f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:37:24, skipping insertion in model container [2022-12-13 21:37:24,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:37:24" (3/3) ... [2022-12-13 21:37:24,101 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2022-12-13 21:37:24,109 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:37:24,120 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:37:24,120 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:37:24,120 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:37:24,186 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 21:37:24,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 186 transitions, 396 flow [2022-12-13 21:37:24,298 INFO L130 PetriNetUnfolder]: 16/183 cut-off events. [2022-12-13 21:37:24,299 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:37:24,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 16/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2022-12-13 21:37:24,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 186 transitions, 396 flow [2022-12-13 21:37:24,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 172 transitions, 362 flow [2022-12-13 21:37:24,313 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:37:24,324 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 172 transitions, 362 flow [2022-12-13 21:37:24,326 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 172 transitions, 362 flow [2022-12-13 21:37:24,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 172 transitions, 362 flow [2022-12-13 21:37:24,379 INFO L130 PetriNetUnfolder]: 16/172 cut-off events. [2022-12-13 21:37:24,379 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:37:24,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 16/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2022-12-13 21:37:24,382 INFO L119 LiptonReduction]: Number of co-enabled transitions 1720 [2022-12-13 21:37:28,688 INFO L134 LiptonReduction]: Checked pairs total: 2484 [2022-12-13 21:37:28,689 INFO L136 LiptonReduction]: Total number of compositions: 168 [2022-12-13 21:37:28,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:37:28,703 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;@4175965c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:37:28,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 21:37:28,707 INFO L130 PetriNetUnfolder]: 6/28 cut-off events. [2022-12-13 21:37:28,707 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:37:28,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:28,708 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:28,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:28,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1548398787, now seen corresponding path program 1 times [2022-12-13 21:37:28,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:28,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247346693] [2022-12-13 21:37:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:28,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:37:29,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:29,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247346693] [2022-12-13 21:37:29,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247346693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:37:29,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:37:29,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:37:29,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888597293] [2022-12-13 21:37:29,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:29,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:37:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:29,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:37:29,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:37:29,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 354 [2022-12-13 21:37:29,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 159.6) internal successors, (798), 5 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) [2022-12-13 21:37:29,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:29,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 354 [2022-12-13 21:37:29,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:29,876 INFO L130 PetriNetUnfolder]: 1154/1564 cut-off events. [2022-12-13 21:37:29,876 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2022-12-13 21:37:29,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3242 conditions, 1564 events. 1154/1564 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6167 event pairs, 314 based on Foata normal form. 1/940 useless extension candidates. Maximal degree in co-relation 1597. Up to 751 conditions per place. [2022-12-13 21:37:29,888 INFO L137 encePairwiseOnDemand]: 346/354 looper letters, 61 selfloop transitions, 10 changer transitions 1/75 dead transitions. [2022-12-13 21:37:29,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 75 transitions, 345 flow [2022-12-13 21:37:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:37:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:37:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 853 transitions. [2022-12-13 21:37:29,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48192090395480225 [2022-12-13 21:37:29,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 853 transitions. [2022-12-13 21:37:29,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 853 transitions. [2022-12-13 21:37:29,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:29,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 853 transitions. [2022-12-13 21:37:29,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 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) [2022-12-13 21:37:29,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:29,923 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:29,924 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 5 states and 853 transitions. [2022-12-13 21:37:29,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 75 transitions, 345 flow [2022-12-13 21:37:29,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 75 transitions, 311 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 21:37:29,932 INFO L231 Difference]: Finished difference. Result has 33 places, 37 transitions, 122 flow [2022-12-13 21:37:29,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=33, PETRI_TRANSITIONS=37} [2022-12-13 21:37:29,936 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-13 21:37:29,937 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 37 transitions, 122 flow [2022-12-13 21:37:29,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.6) internal successors, (798), 5 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) [2022-12-13 21:37:29,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:29,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:29,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:37:29,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:29,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:29,939 INFO L85 PathProgramCache]: Analyzing trace with hash 210447133, now seen corresponding path program 1 times [2022-12-13 21:37:29,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:29,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107399679] [2022-12-13 21:37:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:29,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:37:30,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:30,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107399679] [2022-12-13 21:37:30,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107399679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:37:30,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:37:30,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:37:30,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098509188] [2022-12-13 21:37:30,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:30,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:37:30,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:30,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:37:30,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:37:30,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 354 [2022-12-13 21:37:30,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 37 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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) [2022-12-13 21:37:30,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:30,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 354 [2022-12-13 21:37:30,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:30,338 INFO L130 PetriNetUnfolder]: 1583/2179 cut-off events. [2022-12-13 21:37:30,338 INFO L131 PetriNetUnfolder]: For 226/226 co-relation queries the response was YES. [2022-12-13 21:37:30,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4644 conditions, 2179 events. 1583/2179 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9111 event pairs, 742 based on Foata normal form. 66/1563 useless extension candidates. Maximal degree in co-relation 2535. Up to 1169 conditions per place. [2022-12-13 21:37:30,354 INFO L137 encePairwiseOnDemand]: 347/354 looper letters, 62 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2022-12-13 21:37:30,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 71 transitions, 344 flow [2022-12-13 21:37:30,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:37:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:37:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 837 transitions. [2022-12-13 21:37:30,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4728813559322034 [2022-12-13 21:37:30,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 837 transitions. [2022-12-13 21:37:30,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 837 transitions. [2022-12-13 21:37:30,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:30,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 837 transitions. [2022-12-13 21:37:30,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 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) [2022-12-13 21:37:30,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:30,360 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:30,360 INFO L175 Difference]: Start difference. First operand has 33 places, 37 transitions, 122 flow. Second operand 5 states and 837 transitions. [2022-12-13 21:37:30,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 71 transitions, 344 flow [2022-12-13 21:37:30,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:37:30,362 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 143 flow [2022-12-13 21:37:30,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2022-12-13 21:37:30,362 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2022-12-13 21:37:30,363 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 143 flow [2022-12-13 21:37:30,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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) [2022-12-13 21:37:30,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:30,363 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:30,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:37:30,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash -686225977, now seen corresponding path program 1 times [2022-12-13 21:37:30,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:30,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831713103] [2022-12-13 21:37:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:30,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:37:30,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:30,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831713103] [2022-12-13 21:37:30,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831713103] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:30,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090679430] [2022-12-13 21:37:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:30,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:30,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:30,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:30,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:37:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:30,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:37:30,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:37:30,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:37:30,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090679430] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:30,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:37:30,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-12-13 21:37:30,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645244847] [2022-12-13 21:37:30,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:30,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:37:30,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:30,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:37:30,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:37:30,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 354 [2022-12-13 21:37:30,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 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) [2022-12-13 21:37:30,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:30,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 354 [2022-12-13 21:37:30,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:30,948 INFO L130 PetriNetUnfolder]: 1749/2418 cut-off events. [2022-12-13 21:37:30,948 INFO L131 PetriNetUnfolder]: For 683/683 co-relation queries the response was YES. [2022-12-13 21:37:30,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 2418 events. 1749/2418 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10396 event pairs, 668 based on Foata normal form. 132/1794 useless extension candidates. Maximal degree in co-relation 2900. Up to 945 conditions per place. [2022-12-13 21:37:30,959 INFO L137 encePairwiseOnDemand]: 349/354 looper letters, 64 selfloop transitions, 5 changer transitions 4/75 dead transitions. [2022-12-13 21:37:30,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 75 transitions, 397 flow [2022-12-13 21:37:30,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:37:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:37:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 810 transitions. [2022-12-13 21:37:30,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4576271186440678 [2022-12-13 21:37:30,962 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 810 transitions. [2022-12-13 21:37:30,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 810 transitions. [2022-12-13 21:37:30,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:30,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 810 transitions. [2022-12-13 21:37:30,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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) [2022-12-13 21:37:30,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:30,970 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:30,970 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 143 flow. Second operand 5 states and 810 transitions. [2022-12-13 21:37:30,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 75 transitions, 397 flow [2022-12-13 21:37:30,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 75 transitions, 387 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:37:30,973 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 154 flow [2022-12-13 21:37:30,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2022-12-13 21:37:30,974 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2022-12-13 21:37:30,974 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 154 flow [2022-12-13 21:37:30,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 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) [2022-12-13 21:37:30,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:30,975 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:30,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:37:31,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:31,176 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:31,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1565609701, now seen corresponding path program 1 times [2022-12-13 21:37:31,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:31,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999969340] [2022-12-13 21:37:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:31,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:37:31,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:31,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999969340] [2022-12-13 21:37:31,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999969340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:37:31,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:37:31,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:37:31,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124007390] [2022-12-13 21:37:31,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:31,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:37:31,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:31,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:37:31,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:37:31,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 354 [2022-12-13 21:37:31,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:31,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:31,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 354 [2022-12-13 21:37:31,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:31,546 INFO L130 PetriNetUnfolder]: 676/976 cut-off events. [2022-12-13 21:37:31,546 INFO L131 PetriNetUnfolder]: For 816/903 co-relation queries the response was YES. [2022-12-13 21:37:31,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 976 events. 676/976 cut-off events. For 816/903 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3797 event pairs, 317 based on Foata normal form. 87/850 useless extension candidates. Maximal degree in co-relation 1863. Up to 702 conditions per place. [2022-12-13 21:37:31,551 INFO L137 encePairwiseOnDemand]: 347/354 looper letters, 28 selfloop transitions, 4 changer transitions 29/63 dead transitions. [2022-12-13 21:37:31,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 337 flow [2022-12-13 21:37:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:37:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:37:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 829 transitions. [2022-12-13 21:37:31,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46836158192090394 [2022-12-13 21:37:31,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 829 transitions. [2022-12-13 21:37:31,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 829 transitions. [2022-12-13 21:37:31,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:31,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 829 transitions. [2022-12-13 21:37:31,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 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) [2022-12-13 21:37:31,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:31,558 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:31,558 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 154 flow. Second operand 5 states and 829 transitions. [2022-12-13 21:37:31,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 337 flow [2022-12-13 21:37:31,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 325 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 21:37:31,561 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 138 flow [2022-12-13 21:37:31,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2022-12-13 21:37:31,562 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2022-12-13 21:37:31,562 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 138 flow [2022-12-13 21:37:31,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:31,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:31,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:31,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:37:31,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:31,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:31,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1083756723, now seen corresponding path program 1 times [2022-12-13 21:37:31,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:31,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067239268] [2022-12-13 21:37:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:31,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:37:31,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:31,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067239268] [2022-12-13 21:37:31,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067239268] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:31,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884078570] [2022-12-13 21:37:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:31,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:31,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:31,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:37:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:31,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:37:31,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:37:31,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:37:31,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884078570] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:31,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:37:31,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-12-13 21:37:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668297060] [2022-12-13 21:37:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:31,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:37:31,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:37:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:37:31,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 354 [2022-12-13 21:37:31,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 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) [2022-12-13 21:37:31,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:31,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 354 [2022-12-13 21:37:31,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:32,005 INFO L130 PetriNetUnfolder]: 635/877 cut-off events. [2022-12-13 21:37:32,005 INFO L131 PetriNetUnfolder]: For 512/620 co-relation queries the response was YES. [2022-12-13 21:37:32,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 877 events. 635/877 cut-off events. For 512/620 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3000 event pairs, 157 based on Foata normal form. 108/855 useless extension candidates. Maximal degree in co-relation 2327. Up to 485 conditions per place. [2022-12-13 21:37:32,011 INFO L137 encePairwiseOnDemand]: 348/354 looper letters, 42 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2022-12-13 21:37:32,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 286 flow [2022-12-13 21:37:32,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:37:32,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:37:32,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 786 transitions. [2022-12-13 21:37:32,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4440677966101695 [2022-12-13 21:37:32,014 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 786 transitions. [2022-12-13 21:37:32,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 786 transitions. [2022-12-13 21:37:32,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:32,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 786 transitions. [2022-12-13 21:37:32,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.2) internal successors, (786), 5 states have internal predecessors, (786), 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) [2022-12-13 21:37:32,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:32,020 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:32,020 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 138 flow. Second operand 5 states and 786 transitions. [2022-12-13 21:37:32,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 286 flow [2022-12-13 21:37:32,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 248 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-12-13 21:37:32,023 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 131 flow [2022-12-13 21:37:32,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2022-12-13 21:37:32,024 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2022-12-13 21:37:32,024 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 131 flow [2022-12-13 21:37:32,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 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) [2022-12-13 21:37:32,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:32,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:32,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:37:32,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:32,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:32,226 INFO L85 PathProgramCache]: Analyzing trace with hash -842650041, now seen corresponding path program 1 times [2022-12-13 21:37:32,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:32,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416299401] [2022-12-13 21:37:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:32,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:37:32,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:32,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416299401] [2022-12-13 21:37:32,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416299401] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:32,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902733508] [2022-12-13 21:37:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:32,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:32,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:32,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:32,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:37:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:32,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:37:32,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:37:32,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:37:32,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902733508] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:32,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:37:32,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-12-13 21:37:32,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685072070] [2022-12-13 21:37:32,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:32,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:37:32,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:32,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:37:32,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:37:32,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 354 [2022-12-13 21:37:32,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 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) [2022-12-13 21:37:32,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:32,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 354 [2022-12-13 21:37:32,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:32,646 INFO L130 PetriNetUnfolder]: 563/789 cut-off events. [2022-12-13 21:37:32,646 INFO L131 PetriNetUnfolder]: For 627/819 co-relation queries the response was YES. [2022-12-13 21:37:32,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 789 events. 563/789 cut-off events. For 627/819 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2561 event pairs, 175 based on Foata normal form. 192/869 useless extension candidates. Maximal degree in co-relation 2140. Up to 403 conditions per place. [2022-12-13 21:37:32,649 INFO L137 encePairwiseOnDemand]: 347/354 looper letters, 41 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2022-12-13 21:37:32,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 281 flow [2022-12-13 21:37:32,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:37:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:37:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 786 transitions. [2022-12-13 21:37:32,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4440677966101695 [2022-12-13 21:37:32,651 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 786 transitions. [2022-12-13 21:37:32,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 786 transitions. [2022-12-13 21:37:32,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:32,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 786 transitions. [2022-12-13 21:37:32,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.2) internal successors, (786), 5 states have internal predecessors, (786), 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) [2022-12-13 21:37:32,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:32,657 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 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) [2022-12-13 21:37:32,657 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 131 flow. Second operand 5 states and 786 transitions. [2022-12-13 21:37:32,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 281 flow [2022-12-13 21:37:32,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 273 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:37:32,658 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 160 flow [2022-12-13 21:37:32,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2022-12-13 21:37:32,658 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2022-12-13 21:37:32,659 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 160 flow [2022-12-13 21:37:32,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 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) [2022-12-13 21:37:32,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:32,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:32,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:37:32,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 21:37:32,860 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:32,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2034774881, now seen corresponding path program 1 times [2022-12-13 21:37:32,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:32,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113655362] [2022-12-13 21:37:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:33,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:37:33,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:33,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113655362] [2022-12-13 21:37:33,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113655362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:37:33,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:37:33,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:37:33,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948147615] [2022-12-13 21:37:33,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:33,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:37:33,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:33,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:37:33,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:37:33,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 354 [2022-12-13 21:37:33,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 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) [2022-12-13 21:37:33,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:33,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 354 [2022-12-13 21:37:33,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:33,370 INFO L130 PetriNetUnfolder]: 1132/1594 cut-off events. [2022-12-13 21:37:33,370 INFO L131 PetriNetUnfolder]: For 1576/1720 co-relation queries the response was YES. [2022-12-13 21:37:33,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 1594 events. 1132/1594 cut-off events. For 1576/1720 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5804 event pairs, 125 based on Foata normal form. 220/1628 useless extension candidates. Maximal degree in co-relation 4919. Up to 557 conditions per place. [2022-12-13 21:37:33,376 INFO L137 encePairwiseOnDemand]: 347/354 looper letters, 92 selfloop transitions, 17 changer transitions 13/123 dead transitions. [2022-12-13 21:37:33,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 123 transitions, 726 flow [2022-12-13 21:37:33,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:37:33,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:37:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1532 transitions. [2022-12-13 21:37:33,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48085373509102325 [2022-12-13 21:37:33,378 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1532 transitions. [2022-12-13 21:37:33,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1532 transitions. [2022-12-13 21:37:33,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:33,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1532 transitions. [2022-12-13 21:37:33,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 170.22222222222223) internal successors, (1532), 9 states have internal predecessors, (1532), 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) [2022-12-13 21:37:33,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 354.0) internal successors, (3540), 10 states have internal predecessors, (3540), 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) [2022-12-13 21:37:33,384 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 354.0) internal successors, (3540), 10 states have internal predecessors, (3540), 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) [2022-12-13 21:37:33,384 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 160 flow. Second operand 9 states and 1532 transitions. [2022-12-13 21:37:33,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 123 transitions, 726 flow [2022-12-13 21:37:33,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 123 transitions, 716 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:37:33,386 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 313 flow [2022-12-13 21:37:33,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=313, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2022-12-13 21:37:33,387 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2022-12-13 21:37:33,387 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 313 flow [2022-12-13 21:37:33,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 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) [2022-12-13 21:37:33,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:33,388 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:33,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:37:33,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:33,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:33,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1070180601, now seen corresponding path program 2 times [2022-12-13 21:37:33,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:33,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791388115] [2022-12-13 21:37:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:37:33,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:33,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791388115] [2022-12-13 21:37:33,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791388115] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:33,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980418717] [2022-12-13 21:37:33,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:37:33,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:33,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:33,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:33,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:37:33,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:37:33,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:33,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:37:33,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:37:33,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:37:33,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980418717] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:37:33,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:37:33,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-12-13 21:37:33,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901577402] [2022-12-13 21:37:33,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:33,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:37:33,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:37:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:37:34,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 354 [2022-12-13 21:37:34,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 313 flow. Second operand has 14 states, 14 states have (on average 152.21428571428572) internal successors, (2131), 14 states have internal predecessors, (2131), 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) [2022-12-13 21:37:34,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:34,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 354 [2022-12-13 21:37:34,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:34,405 INFO L130 PetriNetUnfolder]: 1368/2006 cut-off events. [2022-12-13 21:37:34,405 INFO L131 PetriNetUnfolder]: For 5632/6000 co-relation queries the response was YES. [2022-12-13 21:37:34,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7658 conditions, 2006 events. 1368/2006 cut-off events. For 5632/6000 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8335 event pairs, 468 based on Foata normal form. 382/2376 useless extension candidates. Maximal degree in co-relation 5576. Up to 1060 conditions per place. [2022-12-13 21:37:34,413 INFO L137 encePairwiseOnDemand]: 345/354 looper letters, 61 selfloop transitions, 7 changer transitions 52/124 dead transitions. [2022-12-13 21:37:34,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 124 transitions, 934 flow [2022-12-13 21:37:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:37:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:37:34,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1425 transitions. [2022-12-13 21:37:34,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4472693032015066 [2022-12-13 21:37:34,416 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1425 transitions. [2022-12-13 21:37:34,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1425 transitions. [2022-12-13 21:37:34,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:34,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1425 transitions. [2022-12-13 21:37:34,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.33333333333334) internal successors, (1425), 9 states have internal predecessors, (1425), 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) [2022-12-13 21:37:34,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 354.0) internal successors, (3540), 10 states have internal predecessors, (3540), 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) [2022-12-13 21:37:34,421 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 354.0) internal successors, (3540), 10 states have internal predecessors, (3540), 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) [2022-12-13 21:37:34,422 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 313 flow. Second operand 9 states and 1425 transitions. [2022-12-13 21:37:34,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 124 transitions, 934 flow [2022-12-13 21:37:34,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 124 transitions, 910 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-12-13 21:37:34,430 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 351 flow [2022-12-13 21:37:34,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=351, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2022-12-13 21:37:34,431 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2022-12-13 21:37:34,431 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 351 flow [2022-12-13 21:37:34,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 152.21428571428572) internal successors, (2131), 14 states have internal predecessors, (2131), 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) [2022-12-13 21:37:34,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:34,431 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:34,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:37:34,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:34,632 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash 834506689, now seen corresponding path program 3 times [2022-12-13 21:37:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:34,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189060058] [2022-12-13 21:37:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 21:37:34,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:34,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189060058] [2022-12-13 21:37:34,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189060058] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:34,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774035238] [2022-12-13 21:37:34,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:37:34,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:34,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:34,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:34,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:37:34,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:37:34,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:34,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:37:34,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 21:37:34,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 21:37:34,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774035238] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:37:34,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:37:34,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-12-13 21:37:34,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601399614] [2022-12-13 21:37:34,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:34,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 21:37:34,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:34,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 21:37:34,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-12-13 21:37:35,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 354 [2022-12-13 21:37:35,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 351 flow. Second operand has 15 states, 15 states have (on average 151.73333333333332) internal successors, (2276), 15 states have internal predecessors, (2276), 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) [2022-12-13 21:37:35,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:35,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 354 [2022-12-13 21:37:35,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:35,451 INFO L130 PetriNetUnfolder]: 1488/2131 cut-off events. [2022-12-13 21:37:35,451 INFO L131 PetriNetUnfolder]: For 5699/5913 co-relation queries the response was YES. [2022-12-13 21:37:35,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8389 conditions, 2131 events. 1488/2131 cut-off events. For 5699/5913 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8454 event pairs, 453 based on Foata normal form. 298/2421 useless extension candidates. Maximal degree in co-relation 8325. Up to 1367 conditions per place. [2022-12-13 21:37:35,460 INFO L137 encePairwiseOnDemand]: 347/354 looper letters, 93 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2022-12-13 21:37:35,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 924 flow [2022-12-13 21:37:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:37:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:37:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1249 transitions. [2022-12-13 21:37:35,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4410310734463277 [2022-12-13 21:37:35,463 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1249 transitions. [2022-12-13 21:37:35,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1249 transitions. [2022-12-13 21:37:35,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:35,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1249 transitions. [2022-12-13 21:37:35,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.125) internal successors, (1249), 8 states have internal predecessors, (1249), 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) [2022-12-13 21:37:35,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 354.0) internal successors, (3186), 9 states have internal predecessors, (3186), 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) [2022-12-13 21:37:35,467 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 354.0) internal successors, (3186), 9 states have internal predecessors, (3186), 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) [2022-12-13 21:37:35,467 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 351 flow. Second operand 8 states and 1249 transitions. [2022-12-13 21:37:35,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 924 flow [2022-12-13 21:37:35,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 108 transitions, 886 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-12-13 21:37:35,485 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 360 flow [2022-12-13 21:37:35,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=360, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2022-12-13 21:37:35,486 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2022-12-13 21:37:35,486 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 360 flow [2022-12-13 21:37:35,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 151.73333333333332) internal successors, (2276), 15 states have internal predecessors, (2276), 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) [2022-12-13 21:37:35,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:35,486 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:35,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:37:35,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:35,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:35,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1393907641, now seen corresponding path program 4 times [2022-12-13 21:37:35,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:35,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065533302] [2022-12-13 21:37:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:35,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:37:35,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:35,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065533302] [2022-12-13 21:37:35,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065533302] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:35,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756236689] [2022-12-13 21:37:35,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:37:35,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:35,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:35,862 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:35,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:37:35,996 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:37:35,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:35,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:37:36,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:37:36,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:37:36,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756236689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:37:36,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:37:36,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 21:37:36,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781624253] [2022-12-13 21:37:36,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:36,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:37:36,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:37:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:37:36,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 354 [2022-12-13 21:37:36,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 360 flow. Second operand has 13 states, 13 states have (on average 149.30769230769232) internal successors, (1941), 13 states have internal predecessors, (1941), 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) [2022-12-13 21:37:36,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:36,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 354 [2022-12-13 21:37:36,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:36,930 INFO L130 PetriNetUnfolder]: 2106/2946 cut-off events. [2022-12-13 21:37:36,930 INFO L131 PetriNetUnfolder]: For 8780/8820 co-relation queries the response was YES. [2022-12-13 21:37:36,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12357 conditions, 2946 events. 2106/2946 cut-off events. For 8780/8820 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11097 event pairs, 115 based on Foata normal form. 78/3023 useless extension candidates. Maximal degree in co-relation 12293. Up to 950 conditions per place. [2022-12-13 21:37:36,941 INFO L137 encePairwiseOnDemand]: 343/354 looper letters, 167 selfloop transitions, 38 changer transitions 0/208 dead transitions. [2022-12-13 21:37:36,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 208 transitions, 1737 flow [2022-12-13 21:37:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:37:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 21:37:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2610 transitions. [2022-12-13 21:37:36,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4336989032901296 [2022-12-13 21:37:36,945 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2610 transitions. [2022-12-13 21:37:36,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2610 transitions. [2022-12-13 21:37:36,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:36,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2610 transitions. [2022-12-13 21:37:36,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 153.52941176470588) internal successors, (2610), 17 states have internal predecessors, (2610), 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) [2022-12-13 21:37:36,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 354.0) internal successors, (6372), 18 states have internal predecessors, (6372), 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) [2022-12-13 21:37:36,962 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 354.0) internal successors, (6372), 18 states have internal predecessors, (6372), 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) [2022-12-13 21:37:36,962 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 360 flow. Second operand 17 states and 2610 transitions. [2022-12-13 21:37:36,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 208 transitions, 1737 flow [2022-12-13 21:37:36,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 208 transitions, 1701 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-13 21:37:36,975 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 688 flow [2022-12-13 21:37:36,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=688, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2022-12-13 21:37:36,976 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2022-12-13 21:37:36,976 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 688 flow [2022-12-13 21:37:36,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.30769230769232) internal successors, (1941), 13 states have internal predecessors, (1941), 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) [2022-12-13 21:37:36,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:36,977 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:36,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:37:37,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 21:37:37,178 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:37,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:37,179 INFO L85 PathProgramCache]: Analyzing trace with hash -328394989, now seen corresponding path program 5 times [2022-12-13 21:37:37,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:37,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819271157] [2022-12-13 21:37:37,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:37,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 21:37:37,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:37,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819271157] [2022-12-13 21:37:37,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819271157] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:37,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106624272] [2022-12-13 21:37:37,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:37:37,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:37,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:37,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:37,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:37:37,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 21:37:37,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:37,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:37:37,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 21:37:37,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 21:37:37,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106624272] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:37:37,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:37:37,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-12-13 21:37:37,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547913176] [2022-12-13 21:37:37,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:37,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 21:37:37,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:37,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 21:37:37,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:37:37,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 354 [2022-12-13 21:37:37,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 688 flow. Second operand has 16 states, 16 states have (on average 160.875) internal successors, (2574), 16 states have internal predecessors, (2574), 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) [2022-12-13 21:37:37,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:37,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 354 [2022-12-13 21:37:37,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:38,730 INFO L130 PetriNetUnfolder]: 4223/6101 cut-off events. [2022-12-13 21:37:38,730 INFO L131 PetriNetUnfolder]: For 23570/23619 co-relation queries the response was YES. [2022-12-13 21:37:38,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26549 conditions, 6101 events. 4223/6101 cut-off events. For 23570/23619 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 28656 event pairs, 562 based on Foata normal form. 353/6453 useless extension candidates. Maximal degree in co-relation 26478. Up to 1525 conditions per place. [2022-12-13 21:37:38,752 INFO L137 encePairwiseOnDemand]: 348/354 looper letters, 233 selfloop transitions, 54 changer transitions 24/315 dead transitions. [2022-12-13 21:37:38,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 315 transitions, 2641 flow [2022-12-13 21:37:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 21:37:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 21:37:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3229 transitions. [2022-12-13 21:37:38,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4800773119238775 [2022-12-13 21:37:38,756 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3229 transitions. [2022-12-13 21:37:38,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3229 transitions. [2022-12-13 21:37:38,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:38,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3229 transitions. [2022-12-13 21:37:38,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 169.94736842105263) internal successors, (3229), 19 states have internal predecessors, (3229), 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) [2022-12-13 21:37:38,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 354.0) internal successors, (7080), 20 states have internal predecessors, (7080), 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) [2022-12-13 21:37:38,765 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 354.0) internal successors, (7080), 20 states have internal predecessors, (7080), 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) [2022-12-13 21:37:38,766 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 688 flow. Second operand 19 states and 3229 transitions. [2022-12-13 21:37:38,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 315 transitions, 2641 flow [2022-12-13 21:37:38,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 315 transitions, 2529 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-12-13 21:37:38,835 INFO L231 Difference]: Finished difference. Result has 105 places, 117 transitions, 1206 flow [2022-12-13 21:37:38,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1206, PETRI_PLACES=105, PETRI_TRANSITIONS=117} [2022-12-13 21:37:38,836 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 72 predicate places. [2022-12-13 21:37:38,836 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 117 transitions, 1206 flow [2022-12-13 21:37:38,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 160.875) internal successors, (2574), 16 states have internal predecessors, (2574), 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) [2022-12-13 21:37:38,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:38,837 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:38,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 21:37:39,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 21:37:39,039 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:39,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash 928347765, now seen corresponding path program 6 times [2022-12-13 21:37:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:39,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132164502] [2022-12-13 21:37:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:39,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:37:39,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:39,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132164502] [2022-12-13 21:37:39,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132164502] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:39,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206632716] [2022-12-13 21:37:39,207 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:37:39,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:39,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:39,208 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:39,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 21:37:39,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 21:37:39,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:39,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:37:39,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:37:39,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:37:39,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206632716] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:37:39,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:37:39,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-12-13 21:37:39,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404036663] [2022-12-13 21:37:39,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:39,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:37:39,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:39,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:37:39,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:37:39,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 354 [2022-12-13 21:37:39,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 117 transitions, 1206 flow. Second operand has 13 states, 13 states have (on average 161.23076923076923) internal successors, (2096), 13 states have internal predecessors, (2096), 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) [2022-12-13 21:37:39,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:39,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 354 [2022-12-13 21:37:39,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:40,567 INFO L130 PetriNetUnfolder]: 5322/7712 cut-off events. [2022-12-13 21:37:40,567 INFO L131 PetriNetUnfolder]: For 37711/37771 co-relation queries the response was YES. [2022-12-13 21:37:40,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38203 conditions, 7712 events. 5322/7712 cut-off events. For 37711/37771 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 37618 event pairs, 319 based on Foata normal form. 136/7846 useless extension candidates. Maximal degree in co-relation 38128. Up to 1943 conditions per place. [2022-12-13 21:37:40,597 INFO L137 encePairwiseOnDemand]: 347/354 looper letters, 209 selfloop transitions, 77 changer transitions 24/314 dead transitions. [2022-12-13 21:37:40,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 314 transitions, 2963 flow [2022-12-13 21:37:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:37:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 21:37:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2890 transitions. [2022-12-13 21:37:40,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.480225988700565 [2022-12-13 21:37:40,602 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2890 transitions. [2022-12-13 21:37:40,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2890 transitions. [2022-12-13 21:37:40,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:40,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2890 transitions. [2022-12-13 21:37:40,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 170.0) internal successors, (2890), 17 states have internal predecessors, (2890), 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) [2022-12-13 21:37:40,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 354.0) internal successors, (6372), 18 states have internal predecessors, (6372), 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) [2022-12-13 21:37:40,610 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 354.0) internal successors, (6372), 18 states have internal predecessors, (6372), 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) [2022-12-13 21:37:40,611 INFO L175 Difference]: Start difference. First operand has 105 places, 117 transitions, 1206 flow. Second operand 17 states and 2890 transitions. [2022-12-13 21:37:40,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 314 transitions, 2963 flow [2022-12-13 21:37:40,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 314 transitions, 2884 flow, removed 37 selfloop flow, removed 1 redundant places. [2022-12-13 21:37:40,821 INFO L231 Difference]: Finished difference. Result has 126 places, 139 transitions, 1672 flow [2022-12-13 21:37:40,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1672, PETRI_PLACES=126, PETRI_TRANSITIONS=139} [2022-12-13 21:37:40,821 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 93 predicate places. [2022-12-13 21:37:40,821 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 139 transitions, 1672 flow [2022-12-13 21:37:40,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 161.23076923076923) internal successors, (2096), 13 states have internal predecessors, (2096), 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) [2022-12-13 21:37:40,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:40,822 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:40,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 21:37:41,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 21:37:41,024 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:41,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:41,025 INFO L85 PathProgramCache]: Analyzing trace with hash 3199641, now seen corresponding path program 7 times [2022-12-13 21:37:41,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:41,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616002722] [2022-12-13 21:37:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:41,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 21:37:41,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:41,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616002722] [2022-12-13 21:37:41,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616002722] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:41,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769416505] [2022-12-13 21:37:41,232 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:37:41,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:41,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:41,233 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:41,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 21:37:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:41,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:37:41,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 21:37:41,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 21:37:41,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769416505] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:37:41,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:37:41,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-12-13 21:37:41,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850349740] [2022-12-13 21:37:41,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:41,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 21:37:41,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 21:37:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-12-13 21:37:41,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 354 [2022-12-13 21:37:41,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 139 transitions, 1672 flow. Second operand has 19 states, 19 states have (on average 151.8421052631579) internal successors, (2885), 19 states have internal predecessors, (2885), 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) [2022-12-13 21:37:41,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:41,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 354 [2022-12-13 21:37:41,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:43,338 INFO L130 PetriNetUnfolder]: 7658/11250 cut-off events. [2022-12-13 21:37:43,339 INFO L131 PetriNetUnfolder]: For 74708/75208 co-relation queries the response was YES. [2022-12-13 21:37:43,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57713 conditions, 11250 events. 7658/11250 cut-off events. For 74708/75208 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 61875 event pairs, 2197 based on Foata normal form. 612/11717 useless extension candidates. Maximal degree in co-relation 54536. Up to 5118 conditions per place. [2022-12-13 21:37:43,381 INFO L137 encePairwiseOnDemand]: 345/354 looper letters, 165 selfloop transitions, 9 changer transitions 130/323 dead transitions. [2022-12-13 21:37:43,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 323 transitions, 4137 flow [2022-12-13 21:37:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 21:37:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 21:37:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2048 transitions. [2022-12-13 21:37:43,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4450239026510213 [2022-12-13 21:37:43,383 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2048 transitions. [2022-12-13 21:37:43,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2048 transitions. [2022-12-13 21:37:43,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:43,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2048 transitions. [2022-12-13 21:37:43,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 157.53846153846155) internal successors, (2048), 13 states have internal predecessors, (2048), 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) [2022-12-13 21:37:43,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 354.0) internal successors, (4956), 14 states have internal predecessors, (4956), 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) [2022-12-13 21:37:43,388 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 354.0) internal successors, (4956), 14 states have internal predecessors, (4956), 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) [2022-12-13 21:37:43,388 INFO L175 Difference]: Start difference. First operand has 126 places, 139 transitions, 1672 flow. Second operand 13 states and 2048 transitions. [2022-12-13 21:37:43,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 323 transitions, 4137 flow [2022-12-13 21:37:43,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 323 transitions, 3887 flow, removed 91 selfloop flow, removed 6 redundant places. [2022-12-13 21:37:43,755 INFO L231 Difference]: Finished difference. Result has 137 places, 141 transitions, 1633 flow [2022-12-13 21:37:43,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1633, PETRI_PLACES=137, PETRI_TRANSITIONS=141} [2022-12-13 21:37:43,756 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2022-12-13 21:37:43,756 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 141 transitions, 1633 flow [2022-12-13 21:37:43,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 151.8421052631579) internal successors, (2885), 19 states have internal predecessors, (2885), 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) [2022-12-13 21:37:43,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:43,757 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:43,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 21:37:43,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 21:37:43,958 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:43,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:43,960 INFO L85 PathProgramCache]: Analyzing trace with hash 258673517, now seen corresponding path program 8 times [2022-12-13 21:37:43,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:43,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848753570] [2022-12-13 21:37:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:43,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 21:37:44,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848753570] [2022-12-13 21:37:44,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848753570] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756828989] [2022-12-13 21:37:44,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:37:44,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:44,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:44,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:44,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 21:37:44,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:37:44,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:44,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:37:44,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 21:37:44,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 21:37:44,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756828989] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:37:44,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:37:44,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-12-13 21:37:44,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198861159] [2022-12-13 21:37:44,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:44,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 21:37:44,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:44,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 21:37:44,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-12-13 21:37:44,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 354 [2022-12-13 21:37:44,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 141 transitions, 1633 flow. Second operand has 20 states, 20 states have (on average 151.35) internal successors, (3027), 20 states have internal predecessors, (3027), 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) [2022-12-13 21:37:44,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:44,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 354 [2022-12-13 21:37:44,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:45,986 INFO L130 PetriNetUnfolder]: 6466/9211 cut-off events. [2022-12-13 21:37:45,986 INFO L131 PetriNetUnfolder]: For 56450/56801 co-relation queries the response was YES. [2022-12-13 21:37:46,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47975 conditions, 9211 events. 6466/9211 cut-off events. For 56450/56801 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 45867 event pairs, 2002 based on Foata normal form. 603/9638 useless extension candidates. Maximal degree in co-relation 47867. Up to 5190 conditions per place. [2022-12-13 21:37:46,058 INFO L137 encePairwiseOnDemand]: 347/354 looper letters, 276 selfloop transitions, 18 changer transitions 60/372 dead transitions. [2022-12-13 21:37:46,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 372 transitions, 5063 flow [2022-12-13 21:37:46,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:37:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 21:37:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1711 transitions. [2022-12-13 21:37:46,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2022-12-13 21:37:46,060 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1711 transitions. [2022-12-13 21:37:46,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1711 transitions. [2022-12-13 21:37:46,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:46,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1711 transitions. [2022-12-13 21:37:46,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 155.54545454545453) internal successors, (1711), 11 states have internal predecessors, (1711), 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) [2022-12-13 21:37:46,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 354.0) internal successors, (4248), 12 states have internal predecessors, (4248), 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) [2022-12-13 21:37:46,065 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 354.0) internal successors, (4248), 12 states have internal predecessors, (4248), 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) [2022-12-13 21:37:46,065 INFO L175 Difference]: Start difference. First operand has 137 places, 141 transitions, 1633 flow. Second operand 11 states and 1711 transitions. [2022-12-13 21:37:46,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 372 transitions, 5063 flow [2022-12-13 21:37:46,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 372 transitions, 4921 flow, removed 63 selfloop flow, removed 7 redundant places. [2022-12-13 21:37:46,306 INFO L231 Difference]: Finished difference. Result has 134 places, 127 transitions, 1448 flow [2022-12-13 21:37:46,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1448, PETRI_PLACES=134, PETRI_TRANSITIONS=127} [2022-12-13 21:37:46,307 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 101 predicate places. [2022-12-13 21:37:46,307 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 127 transitions, 1448 flow [2022-12-13 21:37:46,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 151.35) internal successors, (3027), 20 states have internal predecessors, (3027), 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) [2022-12-13 21:37:46,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:46,308 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:46,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 21:37:46,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 21:37:46,509 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:37:46,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1976681577, now seen corresponding path program 9 times [2022-12-13 21:37:46,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:46,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485648101] [2022-12-13 21:37:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:46,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 21:37:46,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:46,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485648101] [2022-12-13 21:37:46,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485648101] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559438017] [2022-12-13 21:37:46,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:37:46,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:46,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:46,675 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:46,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 21:37:46,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:37:46,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:37:46,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:37:46,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 21:37:47,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 21:37:47,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559438017] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:37:47,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:37:47,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 14 [2022-12-13 21:37:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833461845] [2022-12-13 21:37:47,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:47,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:37:47,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:47,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:37:47,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:37:47,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 354 [2022-12-13 21:37:47,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 127 transitions, 1448 flow. Second operand has 14 states, 14 states have (on average 144.35714285714286) internal successors, (2021), 14 states have internal predecessors, (2021), 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) [2022-12-13 21:37:47,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:47,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 354 [2022-12-13 21:37:47,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:48,966 INFO L130 PetriNetUnfolder]: 4963/7047 cut-off events. [2022-12-13 21:37:48,966 INFO L131 PetriNetUnfolder]: For 41833/41882 co-relation queries the response was YES. [2022-12-13 21:37:48,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38882 conditions, 7047 events. 4963/7047 cut-off events. For 41833/41882 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 32432 event pairs, 20 based on Foata normal form. 93/7139 useless extension candidates. Maximal degree in co-relation 38780. Up to 2012 conditions per place. [2022-12-13 21:37:48,988 INFO L137 encePairwiseOnDemand]: 342/354 looper letters, 0 selfloop transitions, 0 changer transitions 342/342 dead transitions. [2022-12-13 21:37:48,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 342 transitions, 3976 flow [2022-12-13 21:37:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 21:37:48,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 21:37:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3393 transitions. [2022-12-13 21:37:48,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4167280766396463 [2022-12-13 21:37:48,990 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3393 transitions. [2022-12-13 21:37:48,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3393 transitions. [2022-12-13 21:37:48,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:48,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3393 transitions. [2022-12-13 21:37:48,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 147.52173913043478) internal successors, (3393), 23 states have internal predecessors, (3393), 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) [2022-12-13 21:37:48,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 354.0) internal successors, (8496), 24 states have internal predecessors, (8496), 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) [2022-12-13 21:37:48,998 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 354.0) internal successors, (8496), 24 states have internal predecessors, (8496), 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) [2022-12-13 21:37:48,998 INFO L175 Difference]: Start difference. First operand has 134 places, 127 transitions, 1448 flow. Second operand 23 states and 3393 transitions. [2022-12-13 21:37:48,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 342 transitions, 3976 flow [2022-12-13 21:37:49,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 342 transitions, 3591 flow, removed 83 selfloop flow, removed 16 redundant places. [2022-12-13 21:37:49,211 INFO L231 Difference]: Finished difference. Result has 137 places, 0 transitions, 0 flow [2022-12-13 21:37:49,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=137, PETRI_TRANSITIONS=0} [2022-12-13 21:37:49,212 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2022-12-13 21:37:49,212 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 0 transitions, 0 flow [2022-12-13 21:37:49,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 144.35714285714286) internal successors, (2021), 14 states have internal predecessors, (2021), 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) [2022-12-13 21:37:49,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 21:37:49,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 21:37:49,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 21:37:49,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 21:37:49,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 21:37:49,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 21:37:49,417 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:49,423 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 21:37:49,423 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:37:49,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:37:49 BasicIcfg [2022-12-13 21:37:49,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:37:49,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:37:49,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:37:49,427 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:37:49,427 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:37:24" (3/4) ... [2022-12-13 21:37:49,429 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 21:37:49,435 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 21:37:49,435 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 21:37:49,435 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 21:37:49,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-12-13 21:37:49,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 21:37:49,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 21:37:49,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 21:37:49,466 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:37:49,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:37:49,467 INFO L158 Benchmark]: Toolchain (without parser) took 26012.27ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 939.5MB). Free memory was 106.3MB in the beginning and 422.9MB in the end (delta: -316.6MB). Peak memory consumption was 624.4MB. Max. memory is 16.1GB. [2022-12-13 21:37:49,467 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory was 109.1MB in the beginning and 109.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:37:49,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.76ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 93.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 21:37:49,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.93ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 91.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:37:49,467 INFO L158 Benchmark]: Boogie Preprocessor took 25.36ms. Allocated memory is still 142.6MB. Free memory was 91.6MB in the beginning and 89.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:37:49,467 INFO L158 Benchmark]: RCFGBuilder took 389.97ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 71.4MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 21:37:49,468 INFO L158 Benchmark]: TraceAbstraction took 25331.67ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 939.5MB). Free memory was 70.6MB in the beginning and 426.0MB in the end (delta: -355.4MB). Peak memory consumption was 586.7MB. Max. memory is 16.1GB. [2022-12-13 21:37:49,468 INFO L158 Benchmark]: Witness Printer took 39.87ms. Allocated memory is still 1.1GB. Free memory was 426.0MB in the beginning and 422.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:37:49,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory was 109.1MB in the beginning and 109.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.76ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 93.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.93ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 91.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.36ms. Allocated memory is still 142.6MB. Free memory was 91.6MB in the beginning and 89.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 389.97ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 71.4MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 25331.67ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 939.5MB). Free memory was 70.6MB in the beginning and 426.0MB in the end (delta: -355.4MB). Peak memory consumption was 586.7MB. Max. memory is 16.1GB. * Witness Printer took 39.87ms. Allocated memory is still 1.1GB. Free memory was 426.0MB in the beginning and 422.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 166 PlacesBefore, 33 PlacesAfterwards, 172 TransitionsBefore, 29 TransitionsAfterwards, 1720 CoEnabledTransitionPairs, 7 FixpointIterations, 99 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 6 ConcurrentYvCompositions, 10 ChoiceCompositions, 168 TotalNumberOfCompositions, 2484 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1997, independent: 1932, independent conditional: 0, independent unconditional: 1932, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 916, independent: 896, independent conditional: 0, independent unconditional: 896, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1997, independent: 1036, independent conditional: 0, independent unconditional: 1036, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 916, unknown conditional: 0, unknown unconditional: 916] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 82, Positive conditional cache size: 0, Positive unconditional cache size: 82, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 103]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 206 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.2s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4957 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4318 mSDsluCounter, 2586 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2463 mSDsCounter, 274 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10820 IncrementalHoareTripleChecker+Invalid, 11094 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 274 mSolverCounterUnsat, 123 mSDtfsCounter, 10820 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 911 GetRequests, 654 SyntacticMatches, 27 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1672occurred in iteration=12, InterpolantAutomatonStates: 156, 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, 0.9s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 802 NumberOfCodeBlocks, 783 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1119 ConstructedInterpolants, 0 QuantifiedInterpolants, 3602 SizeOfPredicates, 38 NumberOfNonLiveVariables, 3081 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 371/481 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! [2022-12-13 21:37:49,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f36391c-e9e0-4bf1-b6d3-946035c7597a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE