./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro --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 7c8e5f65b78a025b6376ca00ad63a807363d8e09dfbfc133c782b166d87996a6 --- 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-8393723 [2022-11-18 19:42:25,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:42:25,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:42:25,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:42:25,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:42:25,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:42:25,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:42:25,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:42:25,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:42:25,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:42:25,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:42:25,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:42:25,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:42:25,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:42:25,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:42:25,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:42:25,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:42:25,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:42:25,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:42:25,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:42:25,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:42:25,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:42:25,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:42:25,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:42:25,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:42:25,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:42:25,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:42:25,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:42:25,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:42:25,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:42:25,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:42:25,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:42:25,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:42:25,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:42:25,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:42:25,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:42:25,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:42:25,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:42:25,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:42:25,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:42:25,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:42:25,373 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:42:25,430 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:42:25,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:42:25,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:42:25,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:42:25,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:42:25,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:42:25,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:42:25,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:42:25,437 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:42:25,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:42:25,439 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:42:25,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:42:25,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:42:25,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:42:25,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:42:25,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:42:25,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:42:25,442 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:42:25,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:42:25,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:42:25,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:42:25,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:42:25,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:42:25,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:42:25,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:42:25,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:42:25,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:42:25,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:42:25,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:42:25,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:42:25,448 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:42:25,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:42:25,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:42:25,449 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_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c8e5f65b78a025b6376ca00ad63a807363d8e09dfbfc133c782b166d87996a6 [2022-11-18 19:42:25,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:42:25,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:42:25,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:42:25,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:42:25,825 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:42:25,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/reorder_2.i [2022-11-18 19:42:25,908 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/data/37b8955b0/ea8024981fb8416eb5d70716b4ee7f55/FLAG010707a21 [2022-11-18 19:42:26,607 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:42:26,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/sv-benchmarks/c/pthread/reorder_2.i [2022-11-18 19:42:26,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/data/37b8955b0/ea8024981fb8416eb5d70716b4ee7f55/FLAG010707a21 [2022-11-18 19:42:26,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/data/37b8955b0/ea8024981fb8416eb5d70716b4ee7f55 [2022-11-18 19:42:26,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:42:26,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:42:26,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:42:26,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:42:26,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:42:26,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:42:26" (1/1) ... [2022-11-18 19:42:26,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef9a469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:26, skipping insertion in model container [2022-11-18 19:42:26,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:42:26" (1/1) ... [2022-11-18 19:42:26,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:42:26,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:42:27,873 WARN L234 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_cabc851e-827f-4622-844a-3af2c0e8bab6/sv-benchmarks/c/pthread/reorder_2.i[59793,59806] [2022-11-18 19:42:27,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:42:27,893 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:42:27,951 WARN L234 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_cabc851e-827f-4622-844a-3af2c0e8bab6/sv-benchmarks/c/pthread/reorder_2.i[59793,59806] [2022-11-18 19:42:27,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:42:28,066 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:42:28,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28 WrapperNode [2022-11-18 19:42:28,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:42:28,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:42:28,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:42:28,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:42:28,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,178 INFO L138 Inliner]: procedures = 370, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 135 [2022-11-18 19:42:28,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:42:28,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:42:28,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:42:28,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:42:28,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,235 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:42:28,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:42:28,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:42:28,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:42:28,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (1/1) ... [2022-11-18 19:42:28,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:42:28,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:28,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:28,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:42:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:42:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:42:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:42:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-18 19:42:28,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-18 19:42:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:42:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:42:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-18 19:42:28,369 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-18 19:42:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:42:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:42:28,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:42:28,372 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:42:28,595 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:42:28,598 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:42:29,048 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:42:29,058 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:42:29,066 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:42:29,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:42:29 BoogieIcfgContainer [2022-11-18 19:42:29,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:42:29,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:42:29,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:42:29,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:42:29,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:42:26" (1/3) ... [2022-11-18 19:42:29,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8c8ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:42:29, skipping insertion in model container [2022-11-18 19:42:29,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:28" (2/3) ... [2022-11-18 19:42:29,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8c8ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:42:29, skipping insertion in model container [2022-11-18 19:42:29,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:42:29" (3/3) ... [2022-11-18 19:42:29,087 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2022-11-18 19:42:29,104 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:42:29,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:42:29,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:42:29,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:42:29,227 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:42:29,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 157 transitions, 336 flow [2022-11-18 19:42:29,527 INFO L130 PetriNetUnfolder]: 35/333 cut-off events. [2022-11-18 19:42:29,528 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 19:42:29,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 333 events. 35/333 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1139 event pairs, 0 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2022-11-18 19:42:29,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 157 transitions, 336 flow [2022-11-18 19:42:29,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 155 transitions, 326 flow [2022-11-18 19:42:29,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:42:29,601 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;@122c0682, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:42:29,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 19:42:29,670 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-18 19:42:29,670 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:42:29,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:29,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:29,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 19:42:29,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1995681431, now seen corresponding path program 1 times [2022-11-18 19:42:29,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:29,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927823454] [2022-11-18 19:42:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:29,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:30,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:30,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927823454] [2022-11-18 19:42:30,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927823454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:30,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:30,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:42:30,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175256644] [2022-11-18 19:42:30,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:30,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:42:30,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:30,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:42:30,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:42:30,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 157 [2022-11-18 19:42:30,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 155 transitions, 326 flow. Second operand has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:30,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:30,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 157 [2022-11-18 19:42:30,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:30,254 INFO L130 PetriNetUnfolder]: 5/283 cut-off events. [2022-11-18 19:42:30,255 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 19:42:30,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 283 events. 5/283 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 908 event pairs, 0 based on Foata normal form. 26/284 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-11-18 19:42:30,260 INFO L137 encePairwiseOnDemand]: 147/157 looper letters, 4 selfloop transitions, 0 changer transitions 6/144 dead transitions. [2022-11-18 19:42:30,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 144 transitions, 312 flow [2022-11-18 19:42:30,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:42:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:42:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 294 transitions. [2022-11-18 19:42:30,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9363057324840764 [2022-11-18 19:42:30,290 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 294 transitions. [2022-11-18 19:42:30,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 294 transitions. [2022-11-18 19:42:30,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:30,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 294 transitions. [2022-11-18 19:42:30,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 147.0) internal successors, (294), 2 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:30,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:30,321 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:30,323 INFO L175 Difference]: Start difference. First operand has 147 places, 155 transitions, 326 flow. Second operand 2 states and 294 transitions. [2022-11-18 19:42:30,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 144 transitions, 312 flow [2022-11-18 19:42:30,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 144 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:42:30,337 INFO L231 Difference]: Finished difference. Result has 147 places, 138 transitions, 292 flow [2022-11-18 19:42:30,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=292, PETRI_PLACES=147, PETRI_TRANSITIONS=138} [2022-11-18 19:42:30,347 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 0 predicate places. [2022-11-18 19:42:30,347 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 138 transitions, 292 flow [2022-11-18 19:42:30,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:30,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:30,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:30,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:42:30,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 19:42:30,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2030959970, now seen corresponding path program 1 times [2022-11-18 19:42:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:30,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653956349] [2022-11-18 19:42:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:30,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:30,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653956349] [2022-11-18 19:42:30,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653956349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:30,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:30,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:42:30,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668692290] [2022-11-18 19:42:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:30,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:30,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:30,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 157 [2022-11-18 19:42:30,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 138 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 102.6) internal successors, (513), 5 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:30,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:30,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 157 [2022-11-18 19:42:30,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:31,032 INFO L130 PetriNetUnfolder]: 5/288 cut-off events. [2022-11-18 19:42:31,040 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 19:42:31,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 288 events. 5/288 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 946 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 411. Up to 101 conditions per place. [2022-11-18 19:42:31,043 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 46 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2022-11-18 19:42:31,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 145 transitions, 410 flow [2022-11-18 19:42:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:42:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:42:31,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-11-18 19:42:31,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6980891719745222 [2022-11-18 19:42:31,049 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-11-18 19:42:31,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-11-18 19:42:31,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:31,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-11-18 19:42:31,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,059 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,059 INFO L175 Difference]: Start difference. First operand has 147 places, 138 transitions, 292 flow. Second operand 5 states and 548 transitions. [2022-11-18 19:42:31,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 145 transitions, 410 flow [2022-11-18 19:42:31,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 145 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:42:31,069 INFO L231 Difference]: Finished difference. Result has 148 places, 142 transitions, 331 flow [2022-11-18 19:42:31,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2022-11-18 19:42:31,070 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 1 predicate places. [2022-11-18 19:42:31,071 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 331 flow [2022-11-18 19:42:31,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.6) internal successors, (513), 5 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:31,073 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:31,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:42:31,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 19:42:31,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:31,076 INFO L85 PathProgramCache]: Analyzing trace with hash 885696839, now seen corresponding path program 1 times [2022-11-18 19:42:31,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:31,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847312395] [2022-11-18 19:42:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:31,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:42:31,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:42:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:42:31,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:42:31,247 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:42:31,248 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-18 19:42:31,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-18 19:42:31,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-18 19:42:31,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-18 19:42:31,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:42:31,253 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 19:42:31,256 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:42:31,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:42:31,294 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-18 19:42:31,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 177 transitions, 402 flow [2022-11-18 19:42:31,528 INFO L130 PetriNetUnfolder]: 147/1072 cut-off events. [2022-11-18 19:42:31,528 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 19:42:31,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 1072 events. 147/1072 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5606 event pairs, 2 based on Foata normal form. 0/932 useless extension candidates. Maximal degree in co-relation 624. Up to 32 conditions per place. [2022-11-18 19:42:31,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 177 transitions, 402 flow [2022-11-18 19:42:31,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 177 transitions, 402 flow [2022-11-18 19:42:31,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:42:31,546 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;@122c0682, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:42:31,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 19:42:31,560 INFO L130 PetriNetUnfolder]: 7/115 cut-off events. [2022-11-18 19:42:31,560 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:42:31,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:31,561 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:31,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:42:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:31,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1401623738, now seen corresponding path program 1 times [2022-11-18 19:42:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:31,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269151770] [2022-11-18 19:42:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:31,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:31,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:31,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269151770] [2022-11-18 19:42:31,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269151770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:31,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:31,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:42:31,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914038301] [2022-11-18 19:42:31,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:31,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:42:31,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:31,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:42:31,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:42:31,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 177 [2022-11-18 19:42:31,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 177 transitions, 402 flow. Second operand has 2 states, 2 states have (on average 153.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:31,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 177 [2022-11-18 19:42:31,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:31,849 INFO L130 PetriNetUnfolder]: 58/977 cut-off events. [2022-11-18 19:42:31,849 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2022-11-18 19:42:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 977 events. 58/977 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5466 event pairs, 1 based on Foata normal form. 120/1007 useless extension candidates. Maximal degree in co-relation 601. Up to 73 conditions per place. [2022-11-18 19:42:31,855 INFO L137 encePairwiseOnDemand]: 166/177 looper letters, 12 selfloop transitions, 0 changer transitions 6/164 dead transitions. [2022-11-18 19:42:31,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 164 transitions, 400 flow [2022-11-18 19:42:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:42:31,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:42:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 327 transitions. [2022-11-18 19:42:31,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.923728813559322 [2022-11-18 19:42:31,857 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 327 transitions. [2022-11-18 19:42:31,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 327 transitions. [2022-11-18 19:42:31,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:31,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 327 transitions. [2022-11-18 19:42:31,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,861 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,862 INFO L175 Difference]: Start difference. First operand has 166 places, 177 transitions, 402 flow. Second operand 2 states and 327 transitions. [2022-11-18 19:42:31,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 164 transitions, 400 flow [2022-11-18 19:42:31,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 164 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:42:31,870 INFO L231 Difference]: Finished difference. Result has 165 places, 158 transitions, 364 flow [2022-11-18 19:42:31,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=364, PETRI_PLACES=165, PETRI_TRANSITIONS=158} [2022-11-18 19:42:31,875 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -1 predicate places. [2022-11-18 19:42:31,875 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 158 transitions, 364 flow [2022-11-18 19:42:31,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 153.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:31,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:31,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:42:31,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:42:31,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1067326765, now seen corresponding path program 1 times [2022-11-18 19:42:31,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:31,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124128217] [2022-11-18 19:42:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:32,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:32,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124128217] [2022-11-18 19:42:32,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124128217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:32,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:32,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:42:32,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764327985] [2022-11-18 19:42:32,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:32,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:32,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:32,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:32,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 177 [2022-11-18 19:42:32,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 158 transitions, 364 flow. Second operand has 5 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:32,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:32,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 177 [2022-11-18 19:42:32,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:32,567 INFO L130 PetriNetUnfolder]: 58/978 cut-off events. [2022-11-18 19:42:32,567 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 19:42:32,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 978 events. 58/978 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5453 event pairs, 1 based on Foata normal form. 0/891 useless extension candidates. Maximal degree in co-relation 1447. Up to 368 conditions per place. [2022-11-18 19:42:32,573 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 54 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2022-11-18 19:42:32,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 165 transitions, 498 flow [2022-11-18 19:42:32,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:42:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:42:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 616 transitions. [2022-11-18 19:42:32,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.696045197740113 [2022-11-18 19:42:32,577 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 616 transitions. [2022-11-18 19:42:32,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 616 transitions. [2022-11-18 19:42:32,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:32,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 616 transitions. [2022-11-18 19:42:32,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:32,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:32,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:32,584 INFO L175 Difference]: Start difference. First operand has 165 places, 158 transitions, 364 flow. Second operand 5 states and 616 transitions. [2022-11-18 19:42:32,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 165 transitions, 498 flow [2022-11-18 19:42:32,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 165 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:42:32,589 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 403 flow [2022-11-18 19:42:32,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=403, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2022-11-18 19:42:32,591 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 0 predicate places. [2022-11-18 19:42:32,591 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 403 flow [2022-11-18 19:42:32,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:32,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:32,592 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:32,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:42:32,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:42:32,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:32,594 INFO L85 PathProgramCache]: Analyzing trace with hash 638707997, now seen corresponding path program 1 times [2022-11-18 19:42:32,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:32,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957485645] [2022-11-18 19:42:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:32,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:32,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:32,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957485645] [2022-11-18 19:42:32,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957485645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:32,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:32,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:42:32,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198449394] [2022-11-18 19:42:32,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:32,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:42:32,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:32,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:42:32,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:42:32,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 177 [2022-11-18 19:42:32,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:32,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:32,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 177 [2022-11-18 19:42:32,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:33,863 INFO L130 PetriNetUnfolder]: 1083/4407 cut-off events. [2022-11-18 19:42:33,864 INFO L131 PetriNetUnfolder]: For 2215/5907 co-relation queries the response was YES. [2022-11-18 19:42:33,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6721 conditions, 4407 events. 1083/4407 cut-off events. For 2215/5907 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 39556 event pairs, 339 based on Foata normal form. 28/3540 useless extension candidates. Maximal degree in co-relation 6710. Up to 1471 conditions per place. [2022-11-18 19:42:33,916 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 29 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2022-11-18 19:42:33,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 173 transitions, 516 flow [2022-11-18 19:42:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:42:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:42:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 603 transitions. [2022-11-18 19:42:33,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8516949152542372 [2022-11-18 19:42:33,920 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 603 transitions. [2022-11-18 19:42:33,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 603 transitions. [2022-11-18 19:42:33,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:33,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 603 transitions. [2022-11-18 19:42:33,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:33,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:33,926 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:33,926 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 403 flow. Second operand 4 states and 603 transitions. [2022-11-18 19:42:33,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 173 transitions, 516 flow [2022-11-18 19:42:33,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 173 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:42:33,938 INFO L231 Difference]: Finished difference. Result has 169 places, 164 transitions, 423 flow [2022-11-18 19:42:33,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=423, PETRI_PLACES=169, PETRI_TRANSITIONS=164} [2022-11-18 19:42:33,943 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 3 predicate places. [2022-11-18 19:42:33,944 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 164 transitions, 423 flow [2022-11-18 19:42:33,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:33,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:33,945 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 19:42:33,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:42:33,946 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:42:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash -790184455, now seen corresponding path program 1 times [2022-11-18 19:42:33,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:33,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176165308] [2022-11-18 19:42:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:33,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:34,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:34,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176165308] [2022-11-18 19:42:34,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176165308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:34,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921307241] [2022-11-18 19:42:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:34,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:34,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:34,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:34,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:42:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:34,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:42:34,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:35,238 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:42:35,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:42:35,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:42:35,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:42:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:35,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:36,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 19:42:36,274 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:42:36,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 19:42:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:36,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921307241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:36,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:36,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2022-11-18 19:42:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937180811] [2022-11-18 19:42:36,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:36,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 19:42:36,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:36,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 19:42:36,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=742, Unknown=5, NotChecked=0, Total=870 [2022-11-18 19:42:36,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 177 [2022-11-18 19:42:36,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 164 transitions, 423 flow. Second operand has 30 states, 30 states have (on average 86.96666666666667) internal successors, (2609), 30 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:36,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:36,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 177 [2022-11-18 19:42:36,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:43,879 INFO L130 PetriNetUnfolder]: 13192/30320 cut-off events. [2022-11-18 19:42:43,879 INFO L131 PetriNetUnfolder]: For 7097/7097 co-relation queries the response was YES. [2022-11-18 19:42:44,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57291 conditions, 30320 events. 13192/30320 cut-off events. For 7097/7097 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 300486 event pairs, 1479 based on Foata normal form. 299/29159 useless extension candidates. Maximal degree in co-relation 57279. Up to 11025 conditions per place. [2022-11-18 19:42:44,208 INFO L137 encePairwiseOnDemand]: 154/177 looper letters, 179 selfloop transitions, 53 changer transitions 2/312 dead transitions. [2022-11-18 19:42:44,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 312 transitions, 1328 flow [2022-11-18 19:42:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:42:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 19:42:44,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2162 transitions. [2022-11-18 19:42:44,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5310734463276836 [2022-11-18 19:42:44,218 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2162 transitions. [2022-11-18 19:42:44,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2162 transitions. [2022-11-18 19:42:44,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:44,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2162 transitions. [2022-11-18 19:42:44,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 94.0) internal successors, (2162), 23 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:44,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 177.0) internal successors, (4248), 24 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:44,238 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 177.0) internal successors, (4248), 24 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:44,239 INFO L175 Difference]: Start difference. First operand has 169 places, 164 transitions, 423 flow. Second operand 23 states and 2162 transitions. [2022-11-18 19:42:44,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 312 transitions, 1328 flow [2022-11-18 19:42:44,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 312 transitions, 1311 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:42:44,254 INFO L231 Difference]: Finished difference. Result has 203 places, 210 transitions, 798 flow [2022-11-18 19:42:44,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=798, PETRI_PLACES=203, PETRI_TRANSITIONS=210} [2022-11-18 19:42:44,256 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 37 predicate places. [2022-11-18 19:42:44,257 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 210 transitions, 798 flow [2022-11-18 19:42:44,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 86.96666666666667) internal successors, (2609), 30 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:44,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:44,259 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:44,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:44,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:42:44,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:42:44,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:44,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1457595417, now seen corresponding path program 1 times [2022-11-18 19:42:44,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:44,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684439153] [2022-11-18 19:42:44,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:44,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:45,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:45,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684439153] [2022-11-18 19:42:45,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684439153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:45,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79701160] [2022-11-18 19:42:45,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:45,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:45,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:45,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:45,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:42:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:45,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:42:45,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:45,496 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:42:45,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:42:45,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:42:45,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:42:46,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:42:46,168 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:46,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:46,375 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_81 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_81) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 3 |c_ULTIMATE.start_main_#t~post36#1|))) is different from false [2022-11-18 19:42:46,493 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_81 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_81) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) 3)) is different from false [2022-11-18 19:42:46,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 19:42:46,760 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:42:46,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 19:42:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 19:42:46,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79701160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:46,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:46,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-11-18 19:42:46,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440786518] [2022-11-18 19:42:46,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:46,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:42:46,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:46,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:42:46,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=752, Unknown=6, NotChecked=114, Total=992 [2022-11-18 19:42:46,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 177 [2022-11-18 19:42:46,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 210 transitions, 798 flow. Second operand has 32 states, 32 states have (on average 97.125) internal successors, (3108), 32 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:46,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:46,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 177 [2022-11-18 19:42:46,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:49,656 INFO L130 PetriNetUnfolder]: 843/7435 cut-off events. [2022-11-18 19:42:49,656 INFO L131 PetriNetUnfolder]: For 2095/2838 co-relation queries the response was YES. [2022-11-18 19:42:49,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13042 conditions, 7435 events. 843/7435 cut-off events. For 2095/2838 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 85373 event pairs, 51 based on Foata normal form. 7/6526 useless extension candidates. Maximal degree in co-relation 13016. Up to 2226 conditions per place. [2022-11-18 19:42:49,902 INFO L137 encePairwiseOnDemand]: 156/177 looper letters, 106 selfloop transitions, 32 changer transitions 10/268 dead transitions. [2022-11-18 19:42:49,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 268 transitions, 1276 flow [2022-11-18 19:42:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:42:49,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 19:42:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1643 transitions. [2022-11-18 19:42:49,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5801553672316384 [2022-11-18 19:42:49,936 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1643 transitions. [2022-11-18 19:42:49,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1643 transitions. [2022-11-18 19:42:49,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:49,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1643 transitions. [2022-11-18 19:42:49,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 102.6875) internal successors, (1643), 16 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:49,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 177.0) internal successors, (3009), 17 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:49,958 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 177.0) internal successors, (3009), 17 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:49,958 INFO L175 Difference]: Start difference. First operand has 203 places, 210 transitions, 798 flow. Second operand 16 states and 1643 transitions. [2022-11-18 19:42:49,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 268 transitions, 1276 flow [2022-11-18 19:42:49,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 268 transitions, 1248 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-18 19:42:49,973 INFO L231 Difference]: Finished difference. Result has 220 places, 226 transitions, 966 flow [2022-11-18 19:42:49,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=966, PETRI_PLACES=220, PETRI_TRANSITIONS=226} [2022-11-18 19:42:49,975 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 54 predicate places. [2022-11-18 19:42:49,975 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 226 transitions, 966 flow [2022-11-18 19:42:49,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 97.125) internal successors, (3108), 32 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:49,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:49,977 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 19:42:49,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:50,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:50,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:42:50,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash -236476065, now seen corresponding path program 1 times [2022-11-18 19:42:50,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:50,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290371292] [2022-11-18 19:42:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:50,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:42:50,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:42:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:42:50,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:42:50,299 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:42:50,300 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-18 19:42:50,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-18 19:42:50,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-18 19:42:50,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-18 19:42:50,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-18 19:42:50,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:42:50,301 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 19:42:50,307 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-11-18 19:42:50,307 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:42:50,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:42:50 BasicIcfg [2022-11-18 19:42:50,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:42:50,604 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:42:50,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:42:50,606 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:42:50,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:42:29" (3/4) ... [2022-11-18 19:42:50,609 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 19:42:50,746 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:42:50,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:42:50,747 INFO L158 Benchmark]: Toolchain (without parser) took 23901.20ms. Allocated memory was 100.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 66.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 301.9MB. Max. memory is 16.1GB. [2022-11-18 19:42:50,747 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 100.7MB. Free memory is still 56.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:42:50,748 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1213.88ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 66.4MB in the beginning and 94.4MB in the end (delta: -28.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2022-11-18 19:42:50,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.79ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 93.1MB in the end (delta: 1.2MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2022-11-18 19:42:50,749 INFO L158 Benchmark]: Boogie Preprocessor took 54.00ms. Allocated memory is still 121.6MB. Free memory was 93.1MB in the beginning and 91.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:42:50,750 INFO L158 Benchmark]: RCFGBuilder took 830.22ms. Allocated memory is still 121.6MB. Free memory was 91.0MB in the beginning and 74.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 19:42:50,750 INFO L158 Benchmark]: TraceAbstraction took 21527.77ms. Allocated memory was 121.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 73.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 337.8MB. Max. memory is 16.1GB. [2022-11-18 19:42:50,751 INFO L158 Benchmark]: Witness Printer took 142.46ms. Allocated memory is still 1.5GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 19:42:50,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 100.7MB. Free memory is still 56.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1213.88ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 66.4MB in the beginning and 94.4MB in the end (delta: -28.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.79ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 93.1MB in the end (delta: 1.2MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.00ms. Allocated memory is still 121.6MB. Free memory was 93.1MB in the beginning and 91.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 830.22ms. Allocated memory is still 121.6MB. Free memory was 91.0MB in the beginning and 74.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 21527.77ms. Allocated memory was 121.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 73.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 337.8MB. Max. memory is 16.1GB. * Witness Printer took 142.46ms. Allocated memory is still 1.5GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1292]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1238] 0 static int a = 0; VAL [a=0] [L1239] 0 static int b = 0; VAL [a=0, b=0] [L1236] 0 static int iSet = 2; VAL [a=0, b=0, iSet={9:0}] [L1237] 0 static int iCheck = 2; VAL [a=0, b=0, iCheck={10:0}, iSet={9:0}] [L1245] 0 int i, err; VAL [\old(argc)=3, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, iCheck={10:0}, iSet={9:0}] [L1246] COND TRUE 0 argc != 1 VAL [\old(argc)=3, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, iCheck={10:0}, iSet={9:0}] [L1247] COND FALSE 0 !(argc != 3) VAL [\old(argc)=3, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, iCheck={10:0}, iSet={9:0}] [L1255] EXPR 0 \read(iSet) VAL [\old(argc)=3, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, iCheck={10:0}, iSet={9:0}] [L1255] 0 pthread_t setPool[iSet]; VAL [\old(argc)=3, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, iCheck={10:0}, iSet={9:0}, setPool={13:0}] [L1256] EXPR 0 \read(iCheck) VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, iCheck={10:0}, iSet={9:0}, setPool={13:0}] [L1256] 0 pthread_t checkPool[iCheck]; VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, iCheck={10:0}, iSet={9:0}, setPool={13:0}] [L1257] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, i=0, iCheck={10:0}, iSet={9:0}, setPool={13:0}] [L1257] EXPR 0 \read(iSet) VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, i=0, iCheck={10:0}, iSet={9:0}, setPool={13:0}] [L1257] COND TRUE 0 i < iSet VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, i=0, iCheck={10:0}, iSet={9:0}, setPool={13:0}] [L1258] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=-1, setPool={13:0}] [L1258] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=-1, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, setPool={13:0}] [L1258] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=-1, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, setPool={13:0}] [L1257] 0 i++ VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, err=0, i=1, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1257] EXPR 0 \read(iSet) VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, err=0, i=1, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1257] COND FALSE 0 !(i < iSet) VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, err=0, i=1, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1263] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1263] EXPR 0 \read(iCheck) VAL [\old(argc)=3, \read(iCheck)=14, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1263] COND TRUE 0 i < iCheck VAL [\old(argc)=3, \read(iCheck)=14, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1264-L1265] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=14, \read(iSet)=1, a=0, argc=3, argv={57:58}, argv={57:58}, b=0, checkPool={11:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0))=0, setPool={13:0}] [L1285] 1 a = 1 VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}, param={0:0}] [L1290] COND TRUE 2 ! ((a == 0 && b == 0) || (a == 1 && b == -1)) VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}, param={0:0}] [L1292] 2 reach_error() VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}, param={0:0}] - UnprovableResult [Line: 1264]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1258]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 158 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 34 mSDtfsCounter, 114 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=331occurred in iteration=2, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 173 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.0s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 728 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 728 mSDsluCounter, 1075 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 547 IncrementalHoareTripleChecker+Unchecked, 906 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1477 IncrementalHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 169 mSDtfsCounter, 1477 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 351 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=966occurred in iteration=5, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 516 NumberOfCodeBlocks, 516 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 572 ConstructedInterpolants, 62 QuantifiedInterpolants, 4545 SizeOfPredicates, 24 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 44/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-18 19:42:50,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc851e-827f-4622-844a-3af2c0e8bab6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE