./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:17:56,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:17:56,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:17:56,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:17:56,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:17:56,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:17:56,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:17:56,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:17:56,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:17:56,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:17:56,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:17:56,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:17:56,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:17:56,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:17:56,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:17:56,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:17:56,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:17:56,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:17:56,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:17:56,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:17:56,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:17:56,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:17:56,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:17:56,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:17:56,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:17:56,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:17:56,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:17:56,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:17:56,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:17:56,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:17:56,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:17:56,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:17:56,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:17:56,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:17:56,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:17:56,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:17:56,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:17:56,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:17:56,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:17:56,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:17:56,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:17:56,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:17:57,049 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:17:57,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:17:57,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:17:57,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:17:57,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:17:57,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:17:57,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:17:57,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:17:57,054 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:17:57,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:17:57,055 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:17:57,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:17:57,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:17:57,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:17:57,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:17:57,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:17:57,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:17:57,057 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:17:57,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:17:57,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:17:57,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:17:57,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:17:57,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:17:57,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:17:57,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:17:57,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:17:57,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:17:57,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:17:57,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:17:57,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:17:57,062 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:17:57,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:17:57,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:17:57,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2022-10-17 10:17:57,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:17:57,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:17:57,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:17:57,440 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:17:57,441 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:17:57,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-10-17 10:17:57,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/data/8dc288fcb/8bf52385a8554c99b3cd1d78fe0bdd8e/FLAGbaab4bf18 [2022-10-17 10:17:58,248 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:17:58,249 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-10-17 10:17:58,275 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/data/8dc288fcb/8bf52385a8554c99b3cd1d78fe0bdd8e/FLAGbaab4bf18 [2022-10-17 10:17:58,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/data/8dc288fcb/8bf52385a8554c99b3cd1d78fe0bdd8e [2022-10-17 10:17:58,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:17:58,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:17:58,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:17:58,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:17:58,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:17:58,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:17:58" (1/1) ... [2022-10-17 10:17:58,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380d17b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:58, skipping insertion in model container [2022-10-17 10:17:58,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:17:58" (1/1) ... [2022-10-17 10:17:58,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:17:58,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:17:59,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-10-17 10:17:59,173 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:17:59,174 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:17:59,174 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:17:59,175 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:17:59,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:17:59,265 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:17:59,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-10-17 10:17:59,335 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:17:59,337 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:17:59,338 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:17:59,342 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:17:59,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:17:59,467 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:17:59,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59 WrapperNode [2022-10-17 10:17:59,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:17:59,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:17:59,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:17:59,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:17:59,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,584 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 300 [2022-10-17 10:17:59,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:17:59,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:17:59,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:17:59,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:17:59,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,678 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:17:59,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:17:59,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:17:59,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:17:59,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (1/1) ... [2022-10-17 10:17:59,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:17:59,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:59,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:17:59,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:17:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:17:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:17:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-10-17 10:17:59,803 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-10-17 10:17:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:17:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:17:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-10-17 10:17:59,804 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-10-17 10:17:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:17:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-10-17 10:17:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:17:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:17:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:17:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:17:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:17:59,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:17:59,807 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:18:00,117 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:18:00,118 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:18:00,742 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:18:00,771 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:18:00,772 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-10-17 10:18:00,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:18:00 BoogieIcfgContainer [2022-10-17 10:18:00,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:18:00,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:18:00,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:18:00,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:18:00,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:17:58" (1/3) ... [2022-10-17 10:18:00,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369de749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:18:00, skipping insertion in model container [2022-10-17 10:18:00,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:59" (2/3) ... [2022-10-17 10:18:00,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369de749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:18:00, skipping insertion in model container [2022-10-17 10:18:00,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:18:00" (3/3) ... [2022-10-17 10:18:00,794 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2022-10-17 10:18:00,803 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:18:00,814 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:18:00,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:18:00,815 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:18:01,049 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-17 10:18:01,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 318 transitions, 658 flow [2022-10-17 10:18:01,313 INFO L130 PetriNetUnfolder]: 77/514 cut-off events. [2022-10-17 10:18:01,313 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2022-10-17 10:18:01,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 514 events. 77/514 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2398 event pairs, 0 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 261. Up to 8 conditions per place. [2022-10-17 10:18:01,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 318 transitions, 658 flow [2022-10-17 10:18:01,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 318 transitions, 658 flow [2022-10-17 10:18:01,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:18:01,379 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;@2c297334, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:18:01,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 10:18:01,398 INFO L130 PetriNetUnfolder]: 11/127 cut-off events. [2022-10-17 10:18:01,398 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:18:01,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:18:01,400 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:18:01,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:18:01,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:18:01,406 INFO L85 PathProgramCache]: Analyzing trace with hash -881864155, now seen corresponding path program 1 times [2022-10-17 10:18:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:18:01,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92914148] [2022-10-17 10:18:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:18:01,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:18:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:18:01,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:18:01,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92914148] [2022-10-17 10:18:01,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92914148] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:18:01,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:18:01,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:18:01,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756890799] [2022-10-17 10:18:01,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:18:01,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:18:01,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:18:01,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:18:01,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:18:01,982 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 318 [2022-10-17 10:18:01,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 318 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:01,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:18:01,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 318 [2022-10-17 10:18:01,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:18:02,200 INFO L130 PetriNetUnfolder]: 20/503 cut-off events. [2022-10-17 10:18:02,201 INFO L131 PetriNetUnfolder]: For 33/41 co-relation queries the response was YES. [2022-10-17 10:18:02,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 503 events. 20/503 cut-off events. For 33/41 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2393 event pairs, 0 based on Foata normal form. 97/568 useless extension candidates. Maximal degree in co-relation 302. Up to 22 conditions per place. [2022-10-17 10:18:02,210 INFO L137 encePairwiseOnDemand]: 281/318 looper letters, 21 selfloop transitions, 2 changer transitions 0/289 dead transitions. [2022-10-17 10:18:02,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 289 transitions, 646 flow [2022-10-17 10:18:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:18:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:18:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 858 transitions. [2022-10-17 10:18:02,237 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.89937106918239 [2022-10-17 10:18:02,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 858 transitions. [2022-10-17 10:18:02,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 858 transitions. [2022-10-17 10:18:02,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:18:02,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 858 transitions. [2022-10-17 10:18:02,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:02,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:02,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:02,270 INFO L175 Difference]: Start difference. First operand has 277 places, 318 transitions, 658 flow. Second operand 3 states and 858 transitions. [2022-10-17 10:18:02,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 289 transitions, 646 flow [2022-10-17 10:18:02,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 289 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:18:02,292 INFO L231 Difference]: Finished difference. Result has 278 places, 283 transitions, 598 flow [2022-10-17 10:18:02,295 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=598, PETRI_PLACES=278, PETRI_TRANSITIONS=283} [2022-10-17 10:18:02,301 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 1 predicate places. [2022-10-17 10:18:02,302 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 283 transitions, 598 flow [2022-10-17 10:18:02,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:02,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:18:02,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:18:02,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:18:02,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:18:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:18:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash -32979058, now seen corresponding path program 1 times [2022-10-17 10:18:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:18:02,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691978207] [2022-10-17 10:18:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:18:02,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:18:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:18:02,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:18:02,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691978207] [2022-10-17 10:18:02,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691978207] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:18:02,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:18:02,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:18:02,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871421806] [2022-10-17 10:18:02,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:18:02,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:18:02,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:18:02,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:18:02,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:18:02,552 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 318 [2022-10-17 10:18:02,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 283 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:02,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:18:02,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 318 [2022-10-17 10:18:02,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:18:02,778 INFO L130 PetriNetUnfolder]: 20/575 cut-off events. [2022-10-17 10:18:02,779 INFO L131 PetriNetUnfolder]: For 34/42 co-relation queries the response was YES. [2022-10-17 10:18:02,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 575 events. 20/575 cut-off events. For 34/42 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2490 event pairs, 0 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 503. Up to 25 conditions per place. [2022-10-17 10:18:02,787 INFO L137 encePairwiseOnDemand]: 315/318 looper letters, 15 selfloop transitions, 2 changer transitions 0/287 dead transitions. [2022-10-17 10:18:02,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 287 transitions, 640 flow [2022-10-17 10:18:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:18:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:18:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 825 transitions. [2022-10-17 10:18:02,792 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8647798742138365 [2022-10-17 10:18:02,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 825 transitions. [2022-10-17 10:18:02,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 825 transitions. [2022-10-17 10:18:02,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:18:02,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 825 transitions. [2022-10-17 10:18:02,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:02,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:02,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:02,802 INFO L175 Difference]: Start difference. First operand has 278 places, 283 transitions, 598 flow. Second operand 3 states and 825 transitions. [2022-10-17 10:18:02,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 287 transitions, 640 flow [2022-10-17 10:18:02,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 287 transitions, 638 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:18:02,816 INFO L231 Difference]: Finished difference. Result has 280 places, 284 transitions, 608 flow [2022-10-17 10:18:02,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=608, PETRI_PLACES=280, PETRI_TRANSITIONS=284} [2022-10-17 10:18:02,818 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 3 predicate places. [2022-10-17 10:18:02,818 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 284 transitions, 608 flow [2022-10-17 10:18:02,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:02,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:18:02,820 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:18:02,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:18:02,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:18:02,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:18:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1227432893, now seen corresponding path program 1 times [2022-10-17 10:18:02,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:18:02,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449024928] [2022-10-17 10:18:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:18:02,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:18:02,876 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:18:02,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452505112] [2022-10-17 10:18:02,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:18:02,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:18:02,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:18:02,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:18:02,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:18:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:18:03,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:18:03,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:18:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:18:03,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:18:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:18:03,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:18:03,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449024928] [2022-10-17 10:18:03,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:18:03,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452505112] [2022-10-17 10:18:03,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452505112] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:18:03,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:18:03,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-10-17 10:18:03,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060769046] [2022-10-17 10:18:03,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:18:03,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:18:03,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:18:03,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:18:03,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:18:03,435 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 318 [2022-10-17 10:18:03,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 284 transitions, 608 flow. Second operand has 8 states, 8 states have (on average 270.0) internal successors, (2160), 8 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:03,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:18:03,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 318 [2022-10-17 10:18:03,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:18:03,710 INFO L130 PetriNetUnfolder]: 20/653 cut-off events. [2022-10-17 10:18:03,710 INFO L131 PetriNetUnfolder]: For 39/47 co-relation queries the response was YES. [2022-10-17 10:18:03,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 653 events. 20/653 cut-off events. For 39/47 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2192 event pairs, 0 based on Foata normal form. 4/628 useless extension candidates. Maximal degree in co-relation 511. Up to 19 conditions per place. [2022-10-17 10:18:03,719 INFO L137 encePairwiseOnDemand]: 312/318 looper letters, 16 selfloop transitions, 9 changer transitions 0/294 dead transitions. [2022-10-17 10:18:03,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 294 transitions, 680 flow [2022-10-17 10:18:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:18:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:18:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2439 transitions. [2022-10-17 10:18:03,728 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8522012578616353 [2022-10-17 10:18:03,728 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2439 transitions. [2022-10-17 10:18:03,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2439 transitions. [2022-10-17 10:18:03,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:18:03,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2439 transitions. [2022-10-17 10:18:03,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 271.0) internal successors, (2439), 9 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:03,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 318.0) internal successors, (3180), 10 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:03,751 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 318.0) internal successors, (3180), 10 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:03,752 INFO L175 Difference]: Start difference. First operand has 280 places, 284 transitions, 608 flow. Second operand 9 states and 2439 transitions. [2022-10-17 10:18:03,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 294 transitions, 680 flow [2022-10-17 10:18:03,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 294 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:18:03,762 INFO L231 Difference]: Finished difference. Result has 290 places, 290 transitions, 656 flow [2022-10-17 10:18:03,763 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=290, PETRI_TRANSITIONS=290} [2022-10-17 10:18:03,764 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 13 predicate places. [2022-10-17 10:18:03,764 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 290 transitions, 656 flow [2022-10-17 10:18:03,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.0) internal successors, (2160), 8 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:03,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:18:03,767 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:18:03,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:18:03,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:18:03,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:18:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:18:03,981 INFO L85 PathProgramCache]: Analyzing trace with hash -134988195, now seen corresponding path program 2 times [2022-10-17 10:18:03,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:18:03,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105445626] [2022-10-17 10:18:03,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:18:03,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:18:04,051 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:18:04,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326448796] [2022-10-17 10:18:04,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:18:04,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:18:04,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:18:04,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:18:04,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:18:04,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:18:04,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:18:04,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:18:04,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:18:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:18:04,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:18:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:18:04,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:18:04,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105445626] [2022-10-17 10:18:04,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:18:04,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326448796] [2022-10-17 10:18:04,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326448796] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:18:04,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:18:04,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-10-17 10:18:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070712665] [2022-10-17 10:18:04,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:18:04,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:18:04,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:18:04,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:18:04,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:18:04,846 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 318 [2022-10-17 10:18:04,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 290 transitions, 656 flow. Second operand has 16 states, 16 states have (on average 270.25) internal successors, (4324), 16 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:04,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:18:04,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 318 [2022-10-17 10:18:04,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:18:05,402 INFO L130 PetriNetUnfolder]: 20/949 cut-off events. [2022-10-17 10:18:05,402 INFO L131 PetriNetUnfolder]: For 93/101 co-relation queries the response was YES. [2022-10-17 10:18:05,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 949 events. 20/949 cut-off events. For 93/101 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2221 event pairs, 0 based on Foata normal form. 8/928 useless extension candidates. Maximal degree in co-relation 918. Up to 22 conditions per place. [2022-10-17 10:18:05,411 INFO L137 encePairwiseOnDemand]: 312/318 looper letters, 24 selfloop transitions, 21 changer transitions 0/314 dead transitions. [2022-10-17 10:18:05,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 314 transitions, 854 flow [2022-10-17 10:18:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-17 10:18:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-10-17 10:18:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5677 transitions. [2022-10-17 10:18:05,431 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.850104821802935 [2022-10-17 10:18:05,431 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5677 transitions. [2022-10-17 10:18:05,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5677 transitions. [2022-10-17 10:18:05,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:18:05,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5677 transitions. [2022-10-17 10:18:05,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 270.3333333333333) internal successors, (5677), 21 states have internal predecessors, (5677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:05,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:05,478 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:05,478 INFO L175 Difference]: Start difference. First operand has 290 places, 290 transitions, 656 flow. Second operand 21 states and 5677 transitions. [2022-10-17 10:18:05,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 314 transitions, 854 flow [2022-10-17 10:18:05,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 314 transitions, 840 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-10-17 10:18:05,494 INFO L231 Difference]: Finished difference. Result has 314 places, 303 transitions, 780 flow [2022-10-17 10:18:05,494 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=780, PETRI_PLACES=314, PETRI_TRANSITIONS=303} [2022-10-17 10:18:05,496 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 37 predicate places. [2022-10-17 10:18:05,496 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 303 transitions, 780 flow [2022-10-17 10:18:05,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 270.25) internal successors, (4324), 16 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:05,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:18:05,500 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:18:05,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:18:05,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:18:05,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:18:05,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:18:05,729 INFO L85 PathProgramCache]: Analyzing trace with hash -491054179, now seen corresponding path program 3 times [2022-10-17 10:18:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:18:05,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532026025] [2022-10-17 10:18:05,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:18:05,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:18:05,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:18:05,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307321257] [2022-10-17 10:18:05,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:18:05,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:18:05,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:18:05,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:18:05,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:18:06,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-17 10:18:06,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:18:06,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:18:06,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:18:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-10-17 10:18:06,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:18:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-10-17 10:18:06,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:18:06,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532026025] [2022-10-17 10:18:06,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:18:06,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307321257] [2022-10-17 10:18:06,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307321257] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:18:06,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:18:06,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-10-17 10:18:06,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409394822] [2022-10-17 10:18:06,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:18:06,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:18:06,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:18:06,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:18:06,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:18:06,970 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 318 [2022-10-17 10:18:06,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 303 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 267.75) internal successors, (2142), 8 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:06,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:18:06,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 318 [2022-10-17 10:18:06,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:18:07,600 INFO L130 PetriNetUnfolder]: 21/1225 cut-off events. [2022-10-17 10:18:07,600 INFO L131 PetriNetUnfolder]: For 145/153 co-relation queries the response was YES. [2022-10-17 10:18:07,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1585 conditions, 1225 events. 21/1225 cut-off events. For 145/153 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1805 event pairs, 0 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 1325. Up to 33 conditions per place. [2022-10-17 10:18:07,612 INFO L137 encePairwiseOnDemand]: 312/318 looper letters, 25 selfloop transitions, 9 changer transitions 0/319 dead transitions. [2022-10-17 10:18:07,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 319 transitions, 882 flow [2022-10-17 10:18:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:18:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:18:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2421 transitions. [2022-10-17 10:18:07,622 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8459119496855346 [2022-10-17 10:18:07,622 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2421 transitions. [2022-10-17 10:18:07,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2421 transitions. [2022-10-17 10:18:07,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:18:07,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2421 transitions. [2022-10-17 10:18:07,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:07,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 318.0) internal successors, (3180), 10 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:07,688 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 318.0) internal successors, (3180), 10 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:07,688 INFO L175 Difference]: Start difference. First operand has 314 places, 303 transitions, 780 flow. Second operand 9 states and 2421 transitions. [2022-10-17 10:18:07,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 319 transitions, 882 flow [2022-10-17 10:18:07,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 319 transitions, 858 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-10-17 10:18:07,704 INFO L231 Difference]: Finished difference. Result has 319 places, 309 transitions, 806 flow [2022-10-17 10:18:07,705 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=806, PETRI_PLACES=319, PETRI_TRANSITIONS=309} [2022-10-17 10:18:07,708 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 42 predicate places. [2022-10-17 10:18:07,708 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 309 transitions, 806 flow [2022-10-17 10:18:07,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 267.75) internal successors, (2142), 8 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:07,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:18:07,721 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:18:07,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:18:07,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:18:07,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:18:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:18:07,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1090462563, now seen corresponding path program 4 times [2022-10-17 10:18:07,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:18:07,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330860562] [2022-10-17 10:18:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:18:07,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:18:08,152 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:18:08,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284241364] [2022-10-17 10:18:08,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 10:18:08,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:18:08,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:18:08,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:18:08,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:18:09,209 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 10:18:09,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:18:09,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 3372 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:18:09,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:18:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7883 backedges. 0 proven. 5526 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2022-10-17 10:18:10,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:18:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7883 backedges. 0 proven. 5526 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2022-10-17 10:18:11,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:18:11,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330860562] [2022-10-17 10:18:11,972 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:18:11,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284241364] [2022-10-17 10:18:11,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284241364] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:18:11,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:18:11,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-10-17 10:18:11,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323962676] [2022-10-17 10:18:11,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:18:11,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:18:11,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:18:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:18:11,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:18:12,018 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 318 [2022-10-17 10:18:12,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 309 transitions, 806 flow. Second operand has 16 states, 16 states have (on average 268.375) internal successors, (4294), 16 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:12,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:18:12,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 318 [2022-10-17 10:18:12,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:18:13,926 INFO L130 PetriNetUnfolder]: 25/2321 cut-off events. [2022-10-17 10:18:13,927 INFO L131 PetriNetUnfolder]: For 378/386 co-relation queries the response was YES. [2022-10-17 10:18:13,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3060 conditions, 2321 events. 25/2321 cut-off events. For 378/386 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1788 event pairs, 0 based on Foata normal form. 4/2296 useless extension candidates. Maximal degree in co-relation 2797. Up to 70 conditions per place. [2022-10-17 10:18:13,943 INFO L137 encePairwiseOnDemand]: 312/318 looper letters, 45 selfloop transitions, 21 changer transitions 0/351 dead transitions. [2022-10-17 10:18:13,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 351 transitions, 1082 flow [2022-10-17 10:18:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-17 10:18:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-10-17 10:18:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5635 transitions. [2022-10-17 10:18:13,968 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8438155136268344 [2022-10-17 10:18:13,968 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5635 transitions. [2022-10-17 10:18:13,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5635 transitions. [2022-10-17 10:18:13,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:18:13,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5635 transitions. [2022-10-17 10:18:13,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 268.3333333333333) internal successors, (5635), 21 states have internal predecessors, (5635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:14,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:14,015 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:14,015 INFO L175 Difference]: Start difference. First operand has 319 places, 309 transitions, 806 flow. Second operand 21 states and 5635 transitions. [2022-10-17 10:18:14,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 351 transitions, 1082 flow [2022-10-17 10:18:14,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 351 transitions, 1068 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-10-17 10:18:14,032 INFO L231 Difference]: Finished difference. Result has 343 places, 322 transitions, 930 flow [2022-10-17 10:18:14,033 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=930, PETRI_PLACES=343, PETRI_TRANSITIONS=322} [2022-10-17 10:18:14,036 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 66 predicate places. [2022-10-17 10:18:14,036 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 322 transitions, 930 flow [2022-10-17 10:18:14,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 268.375) internal successors, (4294), 16 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:18:14,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:18:14,040 INFO L208 CegarLoopForPetriNet]: trace histogram [49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:18:14,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:18:14,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:18:14,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:18:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:18:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1395941731, now seen corresponding path program 5 times [2022-10-17 10:18:14,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:18:14,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749437392] [2022-10-17 10:18:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:18:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:18:14,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:18:14,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821360151] [2022-10-17 10:18:14,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-17 10:18:14,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:18:14,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:18:14,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:18:14,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23ae52fd-3551-44cb-aaca-48f9087a7e89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process