./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --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_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/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_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/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_e21b27e1-291e-475d-af11-42249762298d/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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- 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 22:14:42,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:14:42,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:14:42,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:14:42,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:14:42,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:14:42,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:14:42,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:14:42,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:14:42,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:14:42,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:14:42,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:14:42,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:14:42,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:14:42,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:14:42,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:14:42,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:14:42,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:14:42,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:14:42,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:14:42,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:14:42,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:14:42,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:14:42,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:14:42,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:14:42,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:14:42,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:14:42,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:14:42,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:14:42,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:14:42,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:14:42,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:14:42,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:14:42,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:14:42,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:14:42,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:14:42,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:14:42,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:14:42,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:14:42,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:14:42,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:14:42,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:14:42,986 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:14:42,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:14:42,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:14:42,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:14:42,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:14:42,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:14:42,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:14:42,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:14:42,989 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:14:42,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:14:42,998 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:14:42,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:14:42,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:14:42,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:14:42,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:14:42,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:14:42,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:14:42,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:14:43,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:14:43,000 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:14:43,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:14:43,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:14:43,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:14:43,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:14:43,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:14:43,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:14:43,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:14:43,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:14:43,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:14:43,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:14:43,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:14:43,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:14:43,002 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:14:43,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:14:43,002 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:14:43,002 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_e21b27e1-291e-475d-af11-42249762298d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2022-12-13 22:14:43,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:14:43,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:14:43,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:14:43,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:14:43,194 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:14:43,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-12-13 22:14:45,849 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:14:46,059 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:14:46,060 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-12-13 22:14:46,069 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/data/3550a9811/bb4ae71bb8cd4d6a8c97fbae203eb650/FLAG1201e7da4 [2022-12-13 22:14:46,081 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/data/3550a9811/bb4ae71bb8cd4d6a8c97fbae203eb650 [2022-12-13 22:14:46,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:14:46,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:14:46,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:14:46,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:14:46,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:14:46,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab6a2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46, skipping insertion in model container [2022-12-13 22:14:46,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:14:46,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:14:46,433 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_e21b27e1-291e-475d-af11-42249762298d/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-12-13 22:14:46,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:14:46,449 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:14:46,490 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_e21b27e1-291e-475d-af11-42249762298d/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-12-13 22:14:46,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:14:46,532 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:14:46,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46 WrapperNode [2022-12-13 22:14:46,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:14:46,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:14:46,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:14:46,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:14:46,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,571 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-12-13 22:14:46,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:14:46,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:14:46,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:14:46,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:14:46,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,601 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:14:46,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:14:46,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:14:46,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:14:46,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (1/1) ... [2022-12-13 22:14:46,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:14:46,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:14:46,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:14:46,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:14:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:14:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:14:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 22:14:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:14:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 22:14:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 22:14:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 22:14:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 22:14:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:14:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 22:14:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:14:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:14:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:14:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:14:46,674 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 22:14:46,771 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:14:46,773 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:14:46,957 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:14:46,963 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:14:46,963 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 22:14:46,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:14:46 BoogieIcfgContainer [2022-12-13 22:14:46,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:14:46,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:14:46,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:14:46,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:14:46,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:14:46" (1/3) ... [2022-12-13 22:14:46,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe2ca2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:14:46, skipping insertion in model container [2022-12-13 22:14:46,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:14:46" (2/3) ... [2022-12-13 22:14:46,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe2ca2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:14:46, skipping insertion in model container [2022-12-13 22:14:46,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:14:46" (3/3) ... [2022-12-13 22:14:46,974 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2022-12-13 22:14:46,982 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 22:14:46,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:14:46,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:14:46,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:14:47,051 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 22:14:47,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 286 flow [2022-12-13 22:14:47,119 INFO L130 PetriNetUnfolder]: 10/133 cut-off events. [2022-12-13 22:14:47,120 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 22:14:47,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 10/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 139 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2022-12-13 22:14:47,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 135 transitions, 286 flow [2022-12-13 22:14:47,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 121 transitions, 254 flow [2022-12-13 22:14:47,130 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:14:47,137 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 121 transitions, 254 flow [2022-12-13 22:14:47,139 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 121 transitions, 254 flow [2022-12-13 22:14:47,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 121 transitions, 254 flow [2022-12-13 22:14:47,160 INFO L130 PetriNetUnfolder]: 8/121 cut-off events. [2022-12-13 22:14:47,160 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 22:14:47,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 121 events. 8/121 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2022-12-13 22:14:47,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 1922 [2022-12-13 22:14:51,805 INFO L134 LiptonReduction]: Checked pairs total: 4297 [2022-12-13 22:14:51,805 INFO L136 LiptonReduction]: Total number of compositions: 95 [2022-12-13 22:14:51,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:14:51,820 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;@38d6ecde, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:14:51,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 22:14:51,825 INFO L130 PetriNetUnfolder]: 5/30 cut-off events. [2022-12-13 22:14:51,825 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 22:14:51,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:51,826 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:51,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 22:14:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1672498381, now seen corresponding path program 1 times [2022-12-13 22:14:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:51,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263445181] [2022-12-13 22:14:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:51,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:52,076 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 22:14:52,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:52,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263445181] [2022-12-13 22:14:52,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263445181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:14:52,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:14:52,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:14:52,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916505901] [2022-12-13 22:14:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:14:52,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:14:52,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:14:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:14:52,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 230 [2022-12-13 22:14:52,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 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 22:14:52,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:14:52,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 230 [2022-12-13 22:14:52,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:14:52,207 INFO L130 PetriNetUnfolder]: 189/434 cut-off events. [2022-12-13 22:14:52,207 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 22:14:52,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 434 events. 189/434 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2009 event pairs, 72 based on Foata normal form. 24/392 useless extension candidates. Maximal degree in co-relation 696. Up to 194 conditions per place. [2022-12-13 22:14:52,210 INFO L137 encePairwiseOnDemand]: 226/230 looper letters, 32 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2022-12-13 22:14:52,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 169 flow [2022-12-13 22:14:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:14:52,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:14:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2022-12-13 22:14:52,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2022-12-13 22:14:52,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2022-12-13 22:14:52,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2022-12-13 22:14:52,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:14:52,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2022-12-13 22:14:52,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 22:14:52,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:52,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:52,232 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 74 flow. Second operand 3 states and 400 transitions. [2022-12-13 22:14:52,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 169 flow [2022-12-13 22:14:52,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 43 transitions, 159 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 22:14:52,236 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 76 flow [2022-12-13 22:14:52,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2022-12-13 22:14:52,240 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2022-12-13 22:14:52,240 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 76 flow [2022-12-13 22:14:52,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 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 22:14:52,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:52,240 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:52,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:14:52,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 22:14:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:52,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2091016846, now seen corresponding path program 1 times [2022-12-13 22:14:52,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:52,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352237844] [2022-12-13 22:14:52,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:52,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:52,305 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 22:14:52,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:52,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352237844] [2022-12-13 22:14:52,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352237844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:14:52,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:14:52,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:14:52,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214946906] [2022-12-13 22:14:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:14:52,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:14:52,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:14:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:14:52,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 230 [2022-12-13 22:14:52,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 22:14:52,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:14:52,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 230 [2022-12-13 22:14:52,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:14:52,418 INFO L130 PetriNetUnfolder]: 297/641 cut-off events. [2022-12-13 22:14:52,418 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-12-13 22:14:52,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 641 events. 297/641 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3106 event pairs, 117 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 387. Up to 299 conditions per place. [2022-12-13 22:14:52,421 INFO L137 encePairwiseOnDemand]: 227/230 looper letters, 34 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-13 22:14:52,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 187 flow [2022-12-13 22:14:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:14:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:14:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2022-12-13 22:14:52,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5768115942028985 [2022-12-13 22:14:52,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2022-12-13 22:14:52,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2022-12-13 22:14:52,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:14:52,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2022-12-13 22:14:52,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 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 22:14:52,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:52,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:52,426 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 76 flow. Second operand 3 states and 398 transitions. [2022-12-13 22:14:52,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 187 flow [2022-12-13 22:14:52,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:14:52,427 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 86 flow [2022-12-13 22:14:52,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-12-13 22:14:52,428 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2022-12-13 22:14:52,428 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 86 flow [2022-12-13 22:14:52,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 22:14:52,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:52,428 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 22:14:52,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:14:52,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 22:14:52,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:52,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1804982250, now seen corresponding path program 1 times [2022-12-13 22:14:52,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:52,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887836550] [2022-12-13 22:14:52,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:52,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:14:52,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:52,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887836550] [2022-12-13 22:14:52,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887836550] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:14:52,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642600709] [2022-12-13 22:14:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:52,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:52,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:14:52,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:14:52,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:14:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:52,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:14:52,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:14:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:14:52,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:14:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:14:52,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642600709] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:14:52,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:14:52,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 22:14:52,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150902210] [2022-12-13 22:14:52,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:14:52,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:14:52,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:52,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:14:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:14:52,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 230 [2022-12-13 22:14:52,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 0 states have call successors, (0), 0 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 22:14:52,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:14:52,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 230 [2022-12-13 22:14:52,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:14:52,960 INFO L130 PetriNetUnfolder]: 593/1322 cut-off events. [2022-12-13 22:14:52,960 INFO L131 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2022-12-13 22:14:52,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 1322 events. 593/1322 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7151 event pairs, 42 based on Foata normal form. 74/1344 useless extension candidates. Maximal degree in co-relation 627. Up to 168 conditions per place. [2022-12-13 22:14:52,964 INFO L137 encePairwiseOnDemand]: 223/230 looper letters, 104 selfloop transitions, 27 changer transitions 0/140 dead transitions. [2022-12-13 22:14:52,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 140 transitions, 627 flow [2022-12-13 22:14:52,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 22:14:52,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 22:14:52,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1649 transitions. [2022-12-13 22:14:52,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.551505016722408 [2022-12-13 22:14:52,968 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1649 transitions. [2022-12-13 22:14:52,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1649 transitions. [2022-12-13 22:14:52,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:14:52,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1649 transitions. [2022-12-13 22:14:52,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.84615384615384) internal successors, (1649), 13 states have internal predecessors, (1649), 0 states have call successors, (0), 0 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 22:14:52,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 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 22:14:52,976 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 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 22:14:52,976 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 86 flow. Second operand 13 states and 1649 transitions. [2022-12-13 22:14:52,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 140 transitions, 627 flow [2022-12-13 22:14:52,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 140 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:14:52,978 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 300 flow [2022-12-13 22:14:52,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=300, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2022-12-13 22:14:52,978 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2022-12-13 22:14:52,978 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 300 flow [2022-12-13 22:14:52,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 0 states have call successors, (0), 0 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 22:14:52,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:52,979 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:52,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:14:53,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:53,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 22:14:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 856358271, now seen corresponding path program 2 times [2022-12-13 22:14:53,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:53,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423633563] [2022-12-13 22:14:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:53,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 22:14:53,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:53,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423633563] [2022-12-13 22:14:53,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423633563] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:14:53,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349371586] [2022-12-13 22:14:53,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:14:53,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:53,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:14:53,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:14:53,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:14:53,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:14:53,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:14:53,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:14:53,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:14:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 22:14:53,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:14:53,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349371586] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:14:53,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:14:53,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-13 22:14:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031356040] [2022-12-13 22:14:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:14:53,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:14:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:14:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:14:53,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 230 [2022-12-13 22:14:53,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 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 22:14:53,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:14:53,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 230 [2022-12-13 22:14:53,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:14:53,954 INFO L130 PetriNetUnfolder]: 2550/4431 cut-off events. [2022-12-13 22:14:53,954 INFO L131 PetriNetUnfolder]: For 5385/5385 co-relation queries the response was YES. [2022-12-13 22:14:53,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11731 conditions, 4431 events. 2550/4431 cut-off events. For 5385/5385 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 23910 event pairs, 485 based on Foata normal form. 0/4081 useless extension candidates. Maximal degree in co-relation 8099. Up to 1650 conditions per place. [2022-12-13 22:14:53,972 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 149 selfloop transitions, 18 changer transitions 0/170 dead transitions. [2022-12-13 22:14:53,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 170 transitions, 1272 flow [2022-12-13 22:14:53,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:14:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:14:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 906 transitions. [2022-12-13 22:14:53,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5627329192546584 [2022-12-13 22:14:53,974 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 906 transitions. [2022-12-13 22:14:53,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 906 transitions. [2022-12-13 22:14:53,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:14:53,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 906 transitions. [2022-12-13 22:14:53,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.42857142857142) internal successors, (906), 7 states have internal predecessors, (906), 0 states have call successors, (0), 0 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 22:14:53,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 22:14:53,978 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 22:14:53,978 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 300 flow. Second operand 7 states and 906 transitions. [2022-12-13 22:14:53,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 170 transitions, 1272 flow [2022-12-13 22:14:53,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 170 transitions, 1171 flow, removed 33 selfloop flow, removed 2 redundant places. [2022-12-13 22:14:54,000 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 406 flow [2022-12-13 22:14:54,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2022-12-13 22:14:54,001 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2022-12-13 22:14:54,001 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 406 flow [2022-12-13 22:14:54,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 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 22:14:54,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:54,002 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:54,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 22:14:54,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:54,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 22:14:54,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:54,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1889247345, now seen corresponding path program 3 times [2022-12-13 22:14:54,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:54,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964893255] [2022-12-13 22:14:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:54,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 22:14:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:54,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964893255] [2022-12-13 22:14:54,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964893255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:14:54,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:14:54,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:14:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344768704] [2022-12-13 22:14:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:14:54,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:14:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:14:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:14:54,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 230 [2022-12-13 22:14:54,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 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 22:14:54,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:14:54,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 230 [2022-12-13 22:14:54,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:14:54,677 INFO L130 PetriNetUnfolder]: 813/1814 cut-off events. [2022-12-13 22:14:54,677 INFO L131 PetriNetUnfolder]: For 3953/3953 co-relation queries the response was YES. [2022-12-13 22:14:54,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5704 conditions, 1814 events. 813/1814 cut-off events. For 3953/3953 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10195 event pairs, 177 based on Foata normal form. 198/2012 useless extension candidates. Maximal degree in co-relation 4278. Up to 794 conditions per place. [2022-12-13 22:14:54,687 INFO L137 encePairwiseOnDemand]: 222/230 looper letters, 46 selfloop transitions, 20 changer transitions 0/79 dead transitions. [2022-12-13 22:14:54,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 591 flow [2022-12-13 22:14:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:14:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:14:54,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-12-13 22:14:54,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.553623188405797 [2022-12-13 22:14:54,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-12-13 22:14:54,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-12-13 22:14:54,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:14:54,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-12-13 22:14:54,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 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 22:14:54,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:54,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:54,695 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 406 flow. Second operand 3 states and 382 transitions. [2022-12-13 22:14:54,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 591 flow [2022-12-13 22:14:54,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 573 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 22:14:54,708 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 367 flow [2022-12-13 22:14:54,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2022-12-13 22:14:54,709 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2022-12-13 22:14:54,709 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 367 flow [2022-12-13 22:14:54,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 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 22:14:54,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:54,710 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:54,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:14:54,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 22:14:54,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:54,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1444814591, now seen corresponding path program 4 times [2022-12-13 22:14:54,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:54,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381110560] [2022-12-13 22:14:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:54,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 22:14:54,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:54,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381110560] [2022-12-13 22:14:54,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381110560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:14:54,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:14:54,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:14:54,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875288550] [2022-12-13 22:14:54,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:14:54,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:14:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:54,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:14:54,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:14:54,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 230 [2022-12-13 22:14:54,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 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 22:14:54,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:14:54,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 230 [2022-12-13 22:14:54,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:14:54,925 INFO L130 PetriNetUnfolder]: 597/1254 cut-off events. [2022-12-13 22:14:54,926 INFO L131 PetriNetUnfolder]: For 2785/2789 co-relation queries the response was YES. [2022-12-13 22:14:54,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4397 conditions, 1254 events. 597/1254 cut-off events. For 2785/2789 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6048 event pairs, 146 based on Foata normal form. 54/1303 useless extension candidates. Maximal degree in co-relation 3470. Up to 848 conditions per place. [2022-12-13 22:14:54,931 INFO L137 encePairwiseOnDemand]: 225/230 looper letters, 60 selfloop transitions, 3 changer transitions 3/72 dead transitions. [2022-12-13 22:14:54,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 553 flow [2022-12-13 22:14:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:14:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:14:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2022-12-13 22:14:54,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.572463768115942 [2022-12-13 22:14:54,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2022-12-13 22:14:54,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2022-12-13 22:14:54,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:14:54,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2022-12-13 22:14:54,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 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 22:14:54,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:54,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:54,938 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 367 flow. Second operand 3 states and 395 transitions. [2022-12-13 22:14:54,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 553 flow [2022-12-13 22:14:54,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:14:54,946 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 320 flow [2022-12-13 22:14:54,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2022-12-13 22:14:54,947 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2022-12-13 22:14:54,947 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 320 flow [2022-12-13 22:14:54,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 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 22:14:54,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:54,947 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:54,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:14:54,948 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 22:14:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash -169969209, now seen corresponding path program 5 times [2022-12-13 22:14:54,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:54,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819130790] [2022-12-13 22:14:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:54,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 22:14:55,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:55,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819130790] [2022-12-13 22:14:55,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819130790] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:14:55,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090366706] [2022-12-13 22:14:55,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 22:14:55,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:55,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:14:55,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:14:55,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:14:55,131 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-13 22:14:55,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:14:55,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:14:55,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:14:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 22:14:55,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:14:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 22:14:55,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090366706] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:14:55,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:14:55,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-12-13 22:14:55,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810289456] [2022-12-13 22:14:55,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:14:55,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:14:55,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:14:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:14:55,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 230 [2022-12-13 22:14:55,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 22:14:55,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:14:55,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 230 [2022-12-13 22:14:55,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:14:55,404 INFO L130 PetriNetUnfolder]: 487/1162 cut-off events. [2022-12-13 22:14:55,404 INFO L131 PetriNetUnfolder]: For 2547/2577 co-relation queries the response was YES. [2022-12-13 22:14:55,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3634 conditions, 1162 events. 487/1162 cut-off events. For 2547/2577 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5987 event pairs, 90 based on Foata normal form. 60/1215 useless extension candidates. Maximal degree in co-relation 2744. Up to 258 conditions per place. [2022-12-13 22:14:55,413 INFO L137 encePairwiseOnDemand]: 226/230 looper letters, 60 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2022-12-13 22:14:55,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 626 flow [2022-12-13 22:14:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:14:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:14:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 654 transitions. [2022-12-13 22:14:55,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.568695652173913 [2022-12-13 22:14:55,415 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 654 transitions. [2022-12-13 22:14:55,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 654 transitions. [2022-12-13 22:14:55,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:14:55,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 654 transitions. [2022-12-13 22:14:55,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 22:14:55,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:55,425 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:55,425 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 320 flow. Second operand 5 states and 654 transitions. [2022-12-13 22:14:55,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 626 flow [2022-12-13 22:14:55,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 620 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:14:55,430 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 352 flow [2022-12-13 22:14:55,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2022-12-13 22:14:55,430 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2022-12-13 22:14:55,430 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 352 flow [2022-12-13 22:14:55,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 22:14:55,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:55,431 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:55,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:14:55,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:55,631 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 22:14:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash -410169292, now seen corresponding path program 6 times [2022-12-13 22:14:55,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:55,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470193114] [2022-12-13 22:14:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:55,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 22:14:55,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:55,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470193114] [2022-12-13 22:14:55,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470193114] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:14:55,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165256939] [2022-12-13 22:14:55,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 22:14:55,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:55,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:14:55,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:14:55,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:14:55,918 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 22:14:55,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:14:55,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 22:14:55,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:14:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 22:14:55,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:14:55,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165256939] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:14:55,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:14:55,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-12-13 22:14:55,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197231900] [2022-12-13 22:14:55,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:14:55,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:14:55,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:55,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:14:55,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:14:55,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 230 [2022-12-13 22:14:55,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 352 flow. Second operand has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 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 22:14:55,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:14:55,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 230 [2022-12-13 22:14:55,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:14:56,225 INFO L130 PetriNetUnfolder]: 677/1346 cut-off events. [2022-12-13 22:14:56,226 INFO L131 PetriNetUnfolder]: For 3859/3859 co-relation queries the response was YES. [2022-12-13 22:14:56,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4862 conditions, 1346 events. 677/1346 cut-off events. For 3859/3859 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5881 event pairs, 170 based on Foata normal form. 24/1370 useless extension candidates. Maximal degree in co-relation 3817. Up to 519 conditions per place. [2022-12-13 22:14:56,237 INFO L137 encePairwiseOnDemand]: 219/230 looper letters, 90 selfloop transitions, 20 changer transitions 0/112 dead transitions. [2022-12-13 22:14:56,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 951 flow [2022-12-13 22:14:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:14:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 22:14:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 971 transitions. [2022-12-13 22:14:56,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5277173913043478 [2022-12-13 22:14:56,239 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 971 transitions. [2022-12-13 22:14:56,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 971 transitions. [2022-12-13 22:14:56,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:14:56,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 971 transitions. [2022-12-13 22:14:56,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 121.375) internal successors, (971), 8 states have internal predecessors, (971), 0 states have call successors, (0), 0 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 22:14:56,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 230.0) internal successors, (2070), 9 states have internal predecessors, (2070), 0 states have call successors, (0), 0 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 22:14:56,242 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 230.0) internal successors, (2070), 9 states have internal predecessors, (2070), 0 states have call successors, (0), 0 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 22:14:56,242 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 352 flow. Second operand 8 states and 971 transitions. [2022-12-13 22:14:56,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 951 flow [2022-12-13 22:14:56,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 112 transitions, 906 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 22:14:56,249 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 413 flow [2022-12-13 22:14:56,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=413, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2022-12-13 22:14:56,250 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2022-12-13 22:14:56,250 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 413 flow [2022-12-13 22:14:56,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 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 22:14:56,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:56,250 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:56,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 22:14:56,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:56,451 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 22:14:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash -597588410, now seen corresponding path program 7 times [2022-12-13 22:14:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:56,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940798616] [2022-12-13 22:14:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 22:14:56,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:56,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940798616] [2022-12-13 22:14:56,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940798616] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:14:56,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060572144] [2022-12-13 22:14:56,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 22:14:56,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:56,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:14:56,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:14:56,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:14:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:56,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 22:14:56,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:14:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 22:14:56,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:14:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 22:14:56,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060572144] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:14:56,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:14:56,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-12-13 22:14:56,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323594766] [2022-12-13 22:14:56,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:14:56,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:14:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:14:56,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:14:56,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 230 [2022-12-13 22:14:56,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 413 flow. Second operand has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 0 states have call successors, (0), 0 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 22:14:56,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:14:56,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 230 [2022-12-13 22:14:56,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:14:57,192 INFO L130 PetriNetUnfolder]: 447/916 cut-off events. [2022-12-13 22:14:57,192 INFO L131 PetriNetUnfolder]: For 2628/2628 co-relation queries the response was YES. [2022-12-13 22:14:57,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3552 conditions, 916 events. 447/916 cut-off events. For 2628/2628 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3384 event pairs, 116 based on Foata normal form. 28/944 useless extension candidates. Maximal degree in co-relation 3056. Up to 354 conditions per place. [2022-12-13 22:14:57,196 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 74 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2022-12-13 22:14:57,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 91 transitions, 765 flow [2022-12-13 22:14:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:14:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 22:14:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 969 transitions. [2022-12-13 22:14:57,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5266304347826087 [2022-12-13 22:14:57,198 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 969 transitions. [2022-12-13 22:14:57,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 969 transitions. [2022-12-13 22:14:57,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:14:57,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 969 transitions. [2022-12-13 22:14:57,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 121.125) internal successors, (969), 8 states have internal predecessors, (969), 0 states have call successors, (0), 0 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 22:14:57,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 230.0) internal successors, (2070), 9 states have internal predecessors, (2070), 0 states have call successors, (0), 0 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 22:14:57,204 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 230.0) internal successors, (2070), 9 states have internal predecessors, (2070), 0 states have call successors, (0), 0 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 22:14:57,204 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 413 flow. Second operand 8 states and 969 transitions. [2022-12-13 22:14:57,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 91 transitions, 765 flow [2022-12-13 22:14:57,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 715 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-12-13 22:14:57,211 INFO L231 Difference]: Finished difference. Result has 73 places, 50 transitions, 327 flow [2022-12-13 22:14:57,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=327, PETRI_PLACES=73, PETRI_TRANSITIONS=50} [2022-12-13 22:14:57,212 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 40 predicate places. [2022-12-13 22:14:57,212 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 50 transitions, 327 flow [2022-12-13 22:14:57,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 0 states have call successors, (0), 0 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 22:14:57,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:57,213 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:57,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 22:14:57,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:57,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 22:14:57,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 437030776, now seen corresponding path program 8 times [2022-12-13 22:14:57,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:57,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308320722] [2022-12-13 22:14:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:57,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:14:57,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 22:14:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:14:57,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 22:14:57,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 22:14:57,525 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 22:14:57,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 22:14:57,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 22:14:57,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 22:14:57,527 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2022-12-13 22:14:57,531 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 22:14:57,531 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:14:57,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:14:57 BasicIcfg [2022-12-13 22:14:57,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:14:57,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:14:57,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:14:57,566 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:14:57,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:14:46" (3/4) ... [2022-12-13 22:14:57,568 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 22:14:57,606 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:14:57,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:14:57,607 INFO L158 Benchmark]: Toolchain (without parser) took 11523.19ms. Allocated memory was 113.2MB in the beginning and 211.8MB in the end (delta: 98.6MB). Free memory was 66.8MB in the beginning and 77.3MB in the end (delta: -10.6MB). Peak memory consumption was 91.1MB. Max. memory is 16.1GB. [2022-12-13 22:14:57,607 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:14:57,608 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.49ms. Allocated memory is still 113.2MB. Free memory was 66.8MB in the beginning and 40.3MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 22:14:57,608 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.73ms. Allocated memory is still 113.2MB. Free memory was 40.3MB in the beginning and 38.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:14:57,608 INFO L158 Benchmark]: Boogie Preprocessor took 33.19ms. Allocated memory is still 113.2MB. Free memory was 38.3MB in the beginning and 85.5MB in the end (delta: -47.3MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-12-13 22:14:57,609 INFO L158 Benchmark]: RCFGBuilder took 359.45ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 85.5MB in the beginning and 105.6MB in the end (delta: -20.1MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2022-12-13 22:14:57,609 INFO L158 Benchmark]: TraceAbstraction took 10598.48ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 105.6MB in the beginning and 88.9MB in the end (delta: 16.7MB). Peak memory consumption was 83.4MB. Max. memory is 16.1GB. [2022-12-13 22:14:57,609 INFO L158 Benchmark]: Witness Printer took 40.14ms. Allocated memory is still 211.8MB. Free memory was 88.9MB in the beginning and 77.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 22:14:57,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.49ms. Allocated memory is still 113.2MB. Free memory was 66.8MB in the beginning and 40.3MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.73ms. Allocated memory is still 113.2MB. Free memory was 40.3MB in the beginning and 38.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.19ms. Allocated memory is still 113.2MB. Free memory was 38.3MB in the beginning and 85.5MB in the end (delta: -47.3MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * RCFGBuilder took 359.45ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 85.5MB in the beginning and 105.6MB in the end (delta: -20.1MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10598.48ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 105.6MB in the beginning and 88.9MB in the end (delta: 16.7MB). Peak memory consumption was 83.4MB. Max. memory is 16.1GB. * Witness Printer took 40.14ms. Allocated memory is still 211.8MB. Free memory was 88.9MB in the beginning and 77.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 120 PlacesBefore, 33 PlacesAfterwards, 121 TransitionsBefore, 31 TransitionsAfterwards, 1922 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 95 TotalNumberOfCompositions, 4297 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2377, independent: 2210, independent conditional: 0, independent unconditional: 2210, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 990, independent: 968, independent conditional: 0, independent unconditional: 968, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2377, independent: 1242, independent conditional: 0, independent unconditional: 1242, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 990, unknown conditional: 0, unknown unconditional: 990] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 102, Positive conditional cache size: 0, Positive unconditional cache size: 102, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={7:0}, t2={6:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={7:0}, t2={6:0}, total=0] [L878] COND TRUE 1 i < 3 [L915] 0 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ [L892] COND TRUE 2 j < 3 [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=3] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L916] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L897] 2 num-- [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 171 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.5s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 549 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 445 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1163 IncrementalHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 26 mSDtfsCounter, 1163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 304 SyntacticMatches, 15 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=413occurred in iteration=8, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 550 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 597 ConstructedInterpolants, 0 QuantifiedInterpolants, 1345 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1568 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 328/384 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-13 22:14:57,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21b27e1-291e-475d-af11-42249762298d/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE