./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:27:10,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:27:10,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:27:10,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:27:10,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:27:10,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:27:10,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:27:10,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:27:10,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:27:10,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:27:10,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:27:10,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:27:10,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:27:10,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:27:10,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:27:10,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:27:10,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:27:10,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:27:10,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:27:10,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:27:10,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:27:10,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:27:10,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:27:10,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:27:10,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:27:10,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:27:10,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:27:10,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:27:10,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:27:10,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:27:10,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:27:10,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:27:10,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:27:10,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:27:10,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:27:10,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:27:10,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:27:10,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:27:10,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:27:10,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:27:10,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:27:10,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:27:10,457 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:27:10,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:27:10,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:27:10,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:27:10,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:27:10,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:27:10,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:27:10,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:27:10,470 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:27:10,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:27:10,471 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:27:10,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:27:10,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:27:10,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:27:10,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:27:10,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:27:10,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:27:10,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:27:10,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:27:10,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:27:10,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:27:10,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:27:10,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:27:10,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:27:10,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:27:10,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:27:10,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:27:10,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:27:10,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:27:10,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:27:10,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:27:10,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:27:10,474 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:27:10,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:27:10,475 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:27:10,475 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2022-12-13 17:27:10,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:27:10,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:27:10,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:27:10,685 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:27:10,686 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:27:10,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/queue_ok_longest.i [2022-12-13 17:27:13,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:27:13,377 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:27:13,378 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/sv-benchmarks/c/pthread/queue_ok_longest.i [2022-12-13 17:27:13,388 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/data/2ac4e8901/34ce76b112204c2a91773133968a26b8/FLAG3cc750832 [2022-12-13 17:27:13,762 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/data/2ac4e8901/34ce76b112204c2a91773133968a26b8 [2022-12-13 17:27:13,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:27:13,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:27:13,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:27:13,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:27:13,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:27:13,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:27:13" (1/1) ... [2022-12-13 17:27:13,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a769bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:13, skipping insertion in model container [2022-12-13 17:27:13,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:27:13" (1/1) ... [2022-12-13 17:27:13,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:27:13,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:27:14,087 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2022-12-13 17:27:14,092 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2022-12-13 17:27:14,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:27:14,103 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:27:14,133 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2022-12-13 17:27:14,135 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2022-12-13 17:27:14,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:27:14,168 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:27:14,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14 WrapperNode [2022-12-13 17:27:14,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:27:14,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:27:14,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:27:14,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:27:14,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,205 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 202 [2022-12-13 17:27:14,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:27:14,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:27:14,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:27:14,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:27:14,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,225 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:27:14,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:27:14,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:27:14,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:27:14,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (1/1) ... [2022-12-13 17:27:14,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:27:14,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:14,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:27:14,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:27:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 17:27:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 17:27:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 17:27:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 17:27:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:27:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:27:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:27:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:27:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 17:27:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:27:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:27:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:27:14,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:27:14,286 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 17:27:14,404 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:27:14,405 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:27:14,625 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:27:14,632 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:27:14,632 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 17:27:14,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:27:14 BoogieIcfgContainer [2022-12-13 17:27:14,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:27:14,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:27:14,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:27:14,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:27:14,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:27:13" (1/3) ... [2022-12-13 17:27:14,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73531036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:27:14, skipping insertion in model container [2022-12-13 17:27:14,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:14" (2/3) ... [2022-12-13 17:27:14,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73531036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:27:14, skipping insertion in model container [2022-12-13 17:27:14,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:27:14" (3/3) ... [2022-12-13 17:27:14,640 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2022-12-13 17:27:14,647 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:27:14,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:27:14,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 17:27:14,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:27:14,720 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 17:27:14,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 229 transitions, 474 flow [2022-12-13 17:27:14,808 INFO L130 PetriNetUnfolder]: 13/227 cut-off events. [2022-12-13 17:27:14,808 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:27:14,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 227 events. 13/227 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 366 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 146. Up to 3 conditions per place. [2022-12-13 17:27:14,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 229 transitions, 474 flow [2022-12-13 17:27:14,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 217 transitions, 443 flow [2022-12-13 17:27:14,821 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:27:14,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 217 transitions, 443 flow [2022-12-13 17:27:14,831 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 217 transitions, 443 flow [2022-12-13 17:27:14,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 217 transitions, 443 flow [2022-12-13 17:27:14,865 INFO L130 PetriNetUnfolder]: 13/217 cut-off events. [2022-12-13 17:27:14,866 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:27:14,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 217 events. 13/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 295 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 146. Up to 3 conditions per place. [2022-12-13 17:27:14,871 INFO L119 LiptonReduction]: Number of co-enabled transitions 10630 [2022-12-13 17:27:21,049 INFO L134 LiptonReduction]: Checked pairs total: 20702 [2022-12-13 17:27:21,049 INFO L136 LiptonReduction]: Total number of compositions: 200 [2022-12-13 17:27:21,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:27:21,067 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;@3cc8b782, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:27:21,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 17:27:21,069 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 17:27:21,069 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:27:21,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:21,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 17:27:21,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:27:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash 884, now seen corresponding path program 1 times [2022-12-13 17:27:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:21,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596670124] [2022-12-13 17:27:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:21,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:21,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596670124] [2022-12-13 17:27:21,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596670124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:21,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:21,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 17:27:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930110742] [2022-12-13 17:27:21,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:21,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:27:21,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:27:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:27:21,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 429 [2022-12-13 17:27:21,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 105 flow. Second operand has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:21,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 429 [2022-12-13 17:27:21,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:27:21,347 INFO L130 PetriNetUnfolder]: 874/1414 cut-off events. [2022-12-13 17:27:21,347 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-12-13 17:27:21,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 1414 events. 874/1414 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6050 event pairs, 660 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 2657. Up to 1370 conditions per place. [2022-12-13 17:27:21,356 INFO L137 encePairwiseOnDemand]: 428/429 looper letters, 39 selfloop transitions, 0 changer transitions 1/47 dead transitions. [2022-12-13 17:27:21,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 183 flow [2022-12-13 17:27:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:27:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 17:27:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 477 transitions. [2022-12-13 17:27:21,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5559440559440559 [2022-12-13 17:27:21,369 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 477 transitions. [2022-12-13 17:27:21,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 477 transitions. [2022-12-13 17:27:21,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:27:21,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 477 transitions. [2022-12-13 17:27:21,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 238.5) internal successors, (477), 2 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,384 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,385 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 105 flow. Second operand 2 states and 477 transitions. [2022-12-13 17:27:21,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 183 flow [2022-12-13 17:27:21,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 178 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 17:27:21,389 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 96 flow [2022-12-13 17:27:21,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2022-12-13 17:27:21,394 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2022-12-13 17:27:21,394 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 96 flow [2022-12-13 17:27:21,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:21,395 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:21,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:27:21,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:27:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:21,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1004507056, now seen corresponding path program 1 times [2022-12-13 17:27:21,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:21,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369775259] [2022-12-13 17:27:21,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:21,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:21,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:21,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369775259] [2022-12-13 17:27:21,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369775259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:21,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:21,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:27:21,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939878016] [2022-12-13 17:27:21,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:21,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:21,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:21,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:21,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:21,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 17:27:21,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:21,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 17:27:21,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:27:21,758 INFO L130 PetriNetUnfolder]: 203/415 cut-off events. [2022-12-13 17:27:21,759 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 17:27:21,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 415 events. 203/415 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1630 event pairs, 129 based on Foata normal form. 28/403 useless extension candidates. Maximal degree in co-relation 832. Up to 205 conditions per place. [2022-12-13 17:27:21,760 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 41 selfloop transitions, 2 changer transitions 5/53 dead transitions. [2022-12-13 17:27:21,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 207 flow [2022-12-13 17:27:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:27:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2022-12-13 17:27:21,764 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5337995337995338 [2022-12-13 17:27:21,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2022-12-13 17:27:21,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2022-12-13 17:27:21,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:27:21,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2022-12-13 17:27:21,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,771 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,771 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 96 flow. Second operand 3 states and 687 transitions. [2022-12-13 17:27:21,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 207 flow [2022-12-13 17:27:21,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 207 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:27:21,772 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 100 flow [2022-12-13 17:27:21,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2022-12-13 17:27:21,773 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2022-12-13 17:27:21,773 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 100 flow [2022-12-13 17:27:21,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:21,773 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] [2022-12-13 17:27:21,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:27:21,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:27:21,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:21,774 INFO L85 PathProgramCache]: Analyzing trace with hash -700684543, now seen corresponding path program 1 times [2022-12-13 17:27:21,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:21,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690540969] [2022-12-13 17:27:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:21,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:21,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690540969] [2022-12-13 17:27:21,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690540969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:21,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:21,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:27:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588684626] [2022-12-13 17:27:21,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:21,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:21,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:21,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:21,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:21,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 429 [2022-12-13 17:27:21,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:21,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 429 [2022-12-13 17:27:21,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:27:21,975 INFO L130 PetriNetUnfolder]: 251/510 cut-off events. [2022-12-13 17:27:21,975 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 17:27:21,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 510 events. 251/510 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1862 event pairs, 161 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 1052. Up to 369 conditions per place. [2022-12-13 17:27:21,978 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 49 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2022-12-13 17:27:21,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 234 flow [2022-12-13 17:27:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:27:21,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2022-12-13 17:27:21,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.54001554001554 [2022-12-13 17:27:21,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2022-12-13 17:27:21,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2022-12-13 17:27:21,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:27:21,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2022-12-13 17:27:21,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,987 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 100 flow. Second operand 3 states and 695 transitions. [2022-12-13 17:27:21,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 234 flow [2022-12-13 17:27:21,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:27:21,989 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 115 flow [2022-12-13 17:27:21,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2022-12-13 17:27:21,990 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2022-12-13 17:27:21,990 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 115 flow [2022-12-13 17:27:21,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:21,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:21,991 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] [2022-12-13 17:27:21,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:27:21,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:27:21,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:21,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1749282964, now seen corresponding path program 1 times [2022-12-13 17:27:21,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:21,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640512685] [2022-12-13 17:27:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:21,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:22,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:22,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640512685] [2022-12-13 17:27:22,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640512685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:22,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:22,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:27:22,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690965547] [2022-12-13 17:27:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:22,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:22,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:22,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:22,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 429 [2022-12-13 17:27:22,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:22,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:22,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 429 [2022-12-13 17:27:22,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:27:22,254 INFO L130 PetriNetUnfolder]: 236/525 cut-off events. [2022-12-13 17:27:22,254 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-13 17:27:22,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 525 events. 236/525 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2039 event pairs, 29 based on Foata normal form. 42/537 useless extension candidates. Maximal degree in co-relation 1123. Up to 419 conditions per place. [2022-12-13 17:27:22,257 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 44 selfloop transitions, 3 changer transitions 1/52 dead transitions. [2022-12-13 17:27:22,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 226 flow [2022-12-13 17:27:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:22,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:27:22,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2022-12-13 17:27:22,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5314685314685315 [2022-12-13 17:27:22,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2022-12-13 17:27:22,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2022-12-13 17:27:22,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:27:22,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2022-12-13 17:27:22,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:22,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:22,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:22,267 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 115 flow. Second operand 3 states and 684 transitions. [2022-12-13 17:27:22,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 226 flow [2022-12-13 17:27:22,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:27:22,269 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 116 flow [2022-12-13 17:27:22,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2022-12-13 17:27:22,270 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2022-12-13 17:27:22,270 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 116 flow [2022-12-13 17:27:22,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:22,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:22,271 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:22,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:27:22,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:27:22,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:22,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1909469368, now seen corresponding path program 1 times [2022-12-13 17:27:22,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:22,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371532502] [2022-12-13 17:27:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:22,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:22,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:22,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371532502] [2022-12-13 17:27:22,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371532502] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:27:22,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902632598] [2022-12-13 17:27:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:22,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:22,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:22,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:27:22,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:27:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:22,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:27:22,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:27:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:22,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:27:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:22,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902632598] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:27:22,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:27:22,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 17:27:22,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897911502] [2022-12-13 17:27:22,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:27:22,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:27:22,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:27:22,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:27:22,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 17:27:22,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 218.71428571428572) internal successors, (1531), 7 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:22,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:22,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 17:27:22,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:27:22,693 INFO L130 PetriNetUnfolder]: 252/550 cut-off events. [2022-12-13 17:27:22,693 INFO L131 PetriNetUnfolder]: For 35/36 co-relation queries the response was YES. [2022-12-13 17:27:22,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 550 events. 252/550 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1581 event pairs, 106 based on Foata normal form. 12/525 useless extension candidates. Maximal degree in co-relation 1226. Up to 250 conditions per place. [2022-12-13 17:27:22,695 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 71 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2022-12-13 17:27:22,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 376 flow [2022-12-13 17:27:22,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:27:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:27:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1362 transitions. [2022-12-13 17:27:22,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5291375291375291 [2022-12-13 17:27:22,697 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1362 transitions. [2022-12-13 17:27:22,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1362 transitions. [2022-12-13 17:27:22,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:27:22,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1362 transitions. [2022-12-13 17:27:22,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:22,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:22,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:22,703 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 116 flow. Second operand 6 states and 1362 transitions. [2022-12-13 17:27:22,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 376 flow [2022-12-13 17:27:22,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:27:22,705 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 176 flow [2022-12-13 17:27:22,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2022-12-13 17:27:22,705 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2022-12-13 17:27:22,705 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 176 flow [2022-12-13 17:27:22,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 218.71428571428572) internal successors, (1531), 7 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:22,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:22,706 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:22,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:27:22,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:22,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:27:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:22,908 INFO L85 PathProgramCache]: Analyzing trace with hash -685586353, now seen corresponding path program 2 times [2022-12-13 17:27:22,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:22,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721860247] [2022-12-13 17:27:22,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:22,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:23,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:23,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721860247] [2022-12-13 17:27:23,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721860247] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:27:23,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534778376] [2022-12-13 17:27:23,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:27:23,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:23,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:23,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:27:23,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:27:23,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:27:23,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:27:23,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:27:23,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:27:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:23,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:27:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:23,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534778376] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:27:23,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:27:23,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 17:27:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393447571] [2022-12-13 17:27:23,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:27:23,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:27:23,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:27:23,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:27:23,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 17:27:23,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 176 flow. Second operand has 13 states, 13 states have (on average 218.84615384615384) internal successors, (2845), 13 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:23,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:23,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 17:27:23,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:27:23,746 INFO L130 PetriNetUnfolder]: 438/976 cut-off events. [2022-12-13 17:27:23,746 INFO L131 PetriNetUnfolder]: For 320/321 co-relation queries the response was YES. [2022-12-13 17:27:23,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 976 events. 438/976 cut-off events. For 320/321 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2783 event pairs, 106 based on Foata normal form. 24/939 useless extension candidates. Maximal degree in co-relation 2436. Up to 250 conditions per place. [2022-12-13 17:27:23,749 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 137 selfloop transitions, 22 changer transitions 0/164 dead transitions. [2022-12-13 17:27:23,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 164 transitions, 844 flow [2022-12-13 17:27:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:27:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:27:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2721 transitions. [2022-12-13 17:27:23,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5285547785547785 [2022-12-13 17:27:23,753 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2721 transitions. [2022-12-13 17:27:23,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2721 transitions. [2022-12-13 17:27:23,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:27:23,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2721 transitions. [2022-12-13 17:27:23,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 226.75) internal successors, (2721), 12 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:23,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 429.0) internal successors, (5577), 13 states have internal predecessors, (5577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:23,762 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 429.0) internal successors, (5577), 13 states have internal predecessors, (5577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:23,762 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 176 flow. Second operand 12 states and 2721 transitions. [2022-12-13 17:27:23,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 164 transitions, 844 flow [2022-12-13 17:27:23,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 164 transitions, 805 flow, removed 18 selfloop flow, removed 1 redundant places. [2022-12-13 17:27:23,765 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 326 flow [2022-12-13 17:27:23,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=326, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2022-12-13 17:27:23,766 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2022-12-13 17:27:23,766 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 326 flow [2022-12-13 17:27:23,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 218.84615384615384) internal successors, (2845), 13 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:23,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:23,767 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:23,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 17:27:23,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 17:27:23,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:27:23,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:23,969 INFO L85 PathProgramCache]: Analyzing trace with hash -126875921, now seen corresponding path program 3 times [2022-12-13 17:27:23,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:23,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431982251] [2022-12-13 17:27:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:23,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:24,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:24,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431982251] [2022-12-13 17:27:24,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431982251] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:27:24,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105981376] [2022-12-13 17:27:24,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:27:24,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:24,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:24,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:27:24,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:27:24,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 17:27:24,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:27:24,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-13 17:27:24,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:27:25,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:27:25,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:27:25,250 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 16 treesize of output 18 [2022-12-13 17:27:25,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:27:25,308 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 17:27:25,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 17:27:25,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:27:25,358 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 23 treesize of output 22 [2022-12-13 17:27:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 17:27:25,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:27:25,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:27:25,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 43 [2022-12-13 17:27:25,523 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:27:25,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 78 treesize of output 80 [2022-12-13 17:27:25,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 55 treesize of output 47 [2022-12-13 17:27:25,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 4 [2022-12-13 17:27:25,588 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:27:25,588 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 50 treesize of output 46 [2022-12-13 17:27:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 17:27:25,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105981376] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:27:25,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:27:25,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 25 [2022-12-13 17:27:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333619857] [2022-12-13 17:27:25,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:27:25,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 17:27:25,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 17:27:25,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=473, Unknown=4, NotChecked=0, Total=600 [2022-12-13 17:27:26,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 429 [2022-12-13 17:27:26,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 326 flow. Second operand has 25 states, 25 states have (on average 169.68) internal successors, (4242), 25 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:26,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:26,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 429 [2022-12-13 17:27:26,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:27:28,484 INFO L130 PetriNetUnfolder]: 836/1846 cut-off events. [2022-12-13 17:27:28,484 INFO L131 PetriNetUnfolder]: For 1322/1324 co-relation queries the response was YES. [2022-12-13 17:27:28,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4943 conditions, 1846 events. 836/1846 cut-off events. For 1322/1324 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6717 event pairs, 61 based on Foata normal form. 9/1783 useless extension candidates. Maximal degree in co-relation 4926. Up to 297 conditions per place. [2022-12-13 17:27:28,491 INFO L137 encePairwiseOnDemand]: 417/429 looper letters, 268 selfloop transitions, 110 changer transitions 6/387 dead transitions. [2022-12-13 17:27:28,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 387 transitions, 2065 flow [2022-12-13 17:27:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 17:27:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-13 17:27:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7449 transitions. [2022-12-13 17:27:28,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40380549682875266 [2022-12-13 17:27:28,501 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 7449 transitions. [2022-12-13 17:27:28,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 7449 transitions. [2022-12-13 17:27:28,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:27:28,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 7449 transitions. [2022-12-13 17:27:28,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 173.2325581395349) internal successors, (7449), 43 states have internal predecessors, (7449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:28,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 429.0) internal successors, (18876), 44 states have internal predecessors, (18876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:28,530 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 429.0) internal successors, (18876), 44 states have internal predecessors, (18876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:28,530 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 326 flow. Second operand 43 states and 7449 transitions. [2022-12-13 17:27:28,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 387 transitions, 2065 flow [2022-12-13 17:27:28,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 387 transitions, 2050 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 17:27:28,538 INFO L231 Difference]: Finished difference. Result has 136 places, 165 transitions, 1176 flow [2022-12-13 17:27:28,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1176, PETRI_PLACES=136, PETRI_TRANSITIONS=165} [2022-12-13 17:27:28,539 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 88 predicate places. [2022-12-13 17:27:28,539 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 165 transitions, 1176 flow [2022-12-13 17:27:28,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 169.68) internal successors, (4242), 25 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:28,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:28,540 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:28,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:27:28,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:28,742 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:27:28,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:28,743 INFO L85 PathProgramCache]: Analyzing trace with hash 879604879, now seen corresponding path program 1 times [2022-12-13 17:27:28,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:28,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716096288] [2022-12-13 17:27:28,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:28,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:29,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:29,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716096288] [2022-12-13 17:27:29,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716096288] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:27:29,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527813693] [2022-12-13 17:27:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:29,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:29,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:29,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:27:29,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:27:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:29,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 17:27:29,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:27:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:29,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:27:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:29,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527813693] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:27:29,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:27:29,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-12-13 17:27:29,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579218082] [2022-12-13 17:27:29,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:27:29,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 17:27:29,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:29,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 17:27:29,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2022-12-13 17:27:29,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 17:27:29,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 165 transitions, 1176 flow. Second operand has 27 states, 27 states have (on average 219.2962962962963) internal successors, (5921), 27 states have internal predecessors, (5921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:29,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:29,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 17:27:29,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:27:30,846 INFO L130 PetriNetUnfolder]: 1377/3227 cut-off events. [2022-12-13 17:27:30,846 INFO L131 PetriNetUnfolder]: For 28290/28290 co-relation queries the response was YES. [2022-12-13 17:27:30,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14033 conditions, 3227 events. 1377/3227 cut-off events. For 28290/28290 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 11645 event pairs, 142 based on Foata normal form. 104/3307 useless extension candidates. Maximal degree in co-relation 13990. Up to 452 conditions per place. [2022-12-13 17:27:30,863 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 414 selfloop transitions, 75 changer transitions 0/493 dead transitions. [2022-12-13 17:27:30,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 493 transitions, 5509 flow [2022-12-13 17:27:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 17:27:30,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 17:27:30,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5892 transitions. [2022-12-13 17:27:30,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5282409897794513 [2022-12-13 17:27:30,870 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5892 transitions. [2022-12-13 17:27:30,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5892 transitions. [2022-12-13 17:27:30,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:27:30,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5892 transitions. [2022-12-13 17:27:30,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 226.6153846153846) internal successors, (5892), 26 states have internal predecessors, (5892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:30,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 429.0) internal successors, (11583), 27 states have internal predecessors, (11583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:30,905 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 429.0) internal successors, (11583), 27 states have internal predecessors, (11583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:30,905 INFO L175 Difference]: Start difference. First operand has 136 places, 165 transitions, 1176 flow. Second operand 26 states and 5892 transitions. [2022-12-13 17:27:30,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 493 transitions, 5509 flow [2022-12-13 17:27:30,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 493 transitions, 5322 flow, removed 14 selfloop flow, removed 11 redundant places. [2022-12-13 17:27:30,974 INFO L231 Difference]: Finished difference. Result has 164 places, 203 transitions, 1746 flow [2022-12-13 17:27:30,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1746, PETRI_PLACES=164, PETRI_TRANSITIONS=203} [2022-12-13 17:27:30,975 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 116 predicate places. [2022-12-13 17:27:30,975 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 203 transitions, 1746 flow [2022-12-13 17:27:30,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 219.2962962962963) internal successors, (5921), 27 states have internal predecessors, (5921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:30,976 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:30,976 INFO L209 CegarLoopForPetriNet]: trace histogram [24, 24, 24, 24, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:30,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:27:31,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:31,178 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:27:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash -31201585, now seen corresponding path program 2 times [2022-12-13 17:27:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:31,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26418090] [2022-12-13 17:27:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:32,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:32,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26418090] [2022-12-13 17:27:32,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26418090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:27:32,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907302868] [2022-12-13 17:27:32,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:27:32,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:32,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:32,369 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:27:32,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:27:32,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:27:32,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:27:32,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 17:27:32,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:27:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:32,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:27:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:33,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907302868] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:27:33,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:27:33,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2022-12-13 17:27:33,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398325417] [2022-12-13 17:27:33,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:27:33,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 17:27:33,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 17:27:33,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 17:27:33,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 17:27:33,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 203 transitions, 1746 flow. Second operand has 53 states, 53 states have (on average 219.43396226415095) internal successors, (11630), 53 states have internal predecessors, (11630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:33,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:33,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 17:27:33,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:27:36,201 INFO L130 PetriNetUnfolder]: 2703/6399 cut-off events. [2022-12-13 17:27:36,202 INFO L131 PetriNetUnfolder]: For 100007/100007 co-relation queries the response was YES. [2022-12-13 17:27:36,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29636 conditions, 6399 events. 2703/6399 cut-off events. For 100007/100007 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 23314 event pairs, 142 based on Foata normal form. 208/6583 useless extension candidates. Maximal degree in co-relation 29580. Up to 1128 conditions per place. [2022-12-13 17:27:36,236 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 830 selfloop transitions, 153 changer transitions 0/987 dead transitions. [2022-12-13 17:27:36,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 987 transitions, 11801 flow [2022-12-13 17:27:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 17:27:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-13 17:27:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 11781 transitions. [2022-12-13 17:27:36,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5281065088757396 [2022-12-13 17:27:36,245 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 11781 transitions. [2022-12-13 17:27:36,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 11781 transitions. [2022-12-13 17:27:36,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:27:36,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 11781 transitions. [2022-12-13 17:27:36,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 226.55769230769232) internal successors, (11781), 52 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:36,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 429.0) internal successors, (22737), 53 states have internal predecessors, (22737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:36,275 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 429.0) internal successors, (22737), 53 states have internal predecessors, (22737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:36,275 INFO L175 Difference]: Start difference. First operand has 164 places, 203 transitions, 1746 flow. Second operand 52 states and 11781 transitions. [2022-12-13 17:27:36,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 987 transitions, 11801 flow [2022-12-13 17:27:36,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 987 transitions, 11738 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-12-13 17:27:36,410 INFO L231 Difference]: Finished difference. Result has 231 places, 283 transitions, 3414 flow [2022-12-13 17:27:36,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3414, PETRI_PLACES=231, PETRI_TRANSITIONS=283} [2022-12-13 17:27:36,411 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 183 predicate places. [2022-12-13 17:27:36,411 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 283 transitions, 3414 flow [2022-12-13 17:27:36,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 219.43396226415095) internal successors, (11630), 53 states have internal predecessors, (11630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:36,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:36,413 INFO L209 CegarLoopForPetriNet]: trace histogram [50, 50, 50, 50, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:36,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:27:36,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 17:27:36,614 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:27:36,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash 753692596, now seen corresponding path program 3 times [2022-12-13 17:27:36,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:36,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822056469] [2022-12-13 17:27:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:36,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 0 proven. 7675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:39,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:39,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822056469] [2022-12-13 17:27:39,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822056469] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:27:39,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91459390] [2022-12-13 17:27:39,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:27:39,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:39,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:39,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:27:39,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:27:41,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 17:27:41,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:27:41,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 17:27:41,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:27:42,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:27:42,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:27:42,406 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 16 treesize of output 18 [2022-12-13 17:27:42,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:27:42,480 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 17:27:42,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 17:27:42,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:27:42,544 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 23 treesize of output 22 [2022-12-13 17:27:42,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-12-13 17:27:42,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:27:42,670 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 16 treesize of output 18 [2022-12-13 17:27:42,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:27:42,766 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 17:27:42,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 17:27:42,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:27:42,832 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 23 treesize of output 22 [2022-12-13 17:27:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 644 proven. 245 refuted. 0 times theorem prover too weak. 6786 trivial. 0 not checked. [2022-12-13 17:27:42,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:27:42,983 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2173 (Array Int Int))) (< (let ((.cse1 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse0 (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1)) 800)) is different from false [2022-12-13 17:27:42,995 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (or (not (<= v_ArrVal_2171 (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1))) (< (let ((.cse1 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1)) 800))) is different from false [2022-12-13 17:27:43,007 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse1 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_2171) (< (let ((.cse3 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store .cse0 .cse1 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse2 (+ |c_~#queue~0.offset| (* (select .cse2 .cse3) 4)) v_ArrVal_2175)) .cse3)) 800)))) is different from false [2022-12-13 17:27:43,028 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2169 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (< (let ((.cse1 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse3 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1)) 800) (< (+ (select .cse2 .cse3) 1) v_ArrVal_2171)))) is different from false [2022-12-13 17:27:43,053 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2167 Int) (v_ArrVal_2169 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse2 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2167)) (.cse3 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (< (let ((.cse1 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse3 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1)) 800) (< (+ (select .cse2 .cse3) 1) v_ArrVal_2171)))) is different from false [2022-12-13 17:27:45,401 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:27:45,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 129 [2022-12-13 17:27:45,412 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:27:45,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 211 treesize of output 211 [2022-12-13 17:27:45,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 156 treesize of output 132 [2022-12-13 17:27:45,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 113 treesize of output 105 [2022-12-13 17:27:45,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 4 [2022-12-13 17:27:45,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:27:45,518 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 72 treesize of output 68 [2022-12-13 17:27:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 332 proven. 241 refuted. 48 times theorem prover too weak. 6786 trivial. 268 not checked. [2022-12-13 17:27:47,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91459390] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:27:47,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:27:47,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 11, 13] total 75 [2022-12-13 17:27:47,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266971675] [2022-12-13 17:27:47,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:27:47,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-13 17:27:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-13 17:27:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1491, Invalid=3350, Unknown=9, NotChecked=700, Total=5550 [2022-12-13 17:27:47,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 429 [2022-12-13 17:27:47,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 283 transitions, 3414 flow. Second operand has 75 states, 75 states have (on average 168.28) internal successors, (12621), 75 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:47,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:47,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 429 [2022-12-13 17:27:47,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:29:43,395 INFO L130 PetriNetUnfolder]: 5615/12809 cut-off events. [2022-12-13 17:29:43,395 INFO L131 PetriNetUnfolder]: For 185627/185627 co-relation queries the response was YES. [2022-12-13 17:29:43,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64531 conditions, 12809 events. 5615/12809 cut-off events. For 185627/185627 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 58669 event pairs, 113 based on Foata normal form. 409/13182 useless extension candidates. Maximal degree in co-relation 64448. Up to 2161 conditions per place. [2022-12-13 17:29:43,507 INFO L137 encePairwiseOnDemand]: 414/429 looper letters, 1853 selfloop transitions, 1414 changer transitions 1/3271 dead transitions. [2022-12-13 17:29:43,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 3271 transitions, 32645 flow [2022-12-13 17:29:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 468 states. [2022-12-13 17:29:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2022-12-13 17:29:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 79188 transitions. [2022-12-13 17:29:43,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3944175482637021 [2022-12-13 17:29:43,558 INFO L72 ComplementDD]: Start complementDD. Operand 468 states and 79188 transitions. [2022-12-13 17:29:43,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 468 states and 79188 transitions. [2022-12-13 17:29:43,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:29:43,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 468 states and 79188 transitions. [2022-12-13 17:29:43,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 469 states, 468 states have (on average 169.2051282051282) internal successors, (79188), 468 states have internal predecessors, (79188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:29:43,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 469 states, 469 states have (on average 429.0) internal successors, (201201), 469 states have internal predecessors, (201201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:29:43,822 INFO L81 ComplementDD]: Finished complementDD. Result has 469 states, 469 states have (on average 429.0) internal successors, (201201), 469 states have internal predecessors, (201201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:29:43,822 INFO L175 Difference]: Start difference. First operand has 231 places, 283 transitions, 3414 flow. Second operand 468 states and 79188 transitions. [2022-12-13 17:29:43,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 3271 transitions, 32645 flow [2022-12-13 17:29:44,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 3271 transitions, 32426 flow, removed 0 selfloop flow, removed 23 redundant places. [2022-12-13 17:29:44,621 INFO L231 Difference]: Finished difference. Result has 878 places, 1658 transitions, 25636 flow [2022-12-13 17:29:44,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=3263, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=468, PETRI_FLOW=25636, PETRI_PLACES=878, PETRI_TRANSITIONS=1658} [2022-12-13 17:29:44,622 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 830 predicate places. [2022-12-13 17:29:44,622 INFO L495 AbstractCegarLoop]: Abstraction has has 878 places, 1658 transitions, 25636 flow [2022-12-13 17:29:44,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 168.28) internal successors, (12621), 75 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:29:44,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:29:44,624 INFO L209 CegarLoopForPetriNet]: trace histogram [51, 51, 51, 51, 37, 37, 37, 37, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:29:44,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:29:44,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 17:29:44,825 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:29:44,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:29:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash -768384537, now seen corresponding path program 4 times [2022-12-13 17:29:44,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:29:44,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106559003] [2022-12-13 17:29:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:29:44,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:29:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8606 backedges. 0 proven. 8606 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:29:47,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:29:47,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106559003] [2022-12-13 17:29:47,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106559003] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:29:47,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116893425] [2022-12-13 17:29:47,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:29:47,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:29:47,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:29:47,798 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:29:47,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:30:01,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:30:01,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:30:01,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2813 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-13 17:30:01,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:30:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8606 backedges. 0 proven. 8606 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:30:01,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:30:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8606 backedges. 0 proven. 8606 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:30:04,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116893425] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:30:04,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:30:04,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2022-12-13 17:30:04,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624833600] [2022-12-13 17:30:04,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:30:04,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-12-13 17:30:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:30:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-12-13 17:30:04,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2022-12-13 17:30:04,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 17:30:04,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 1658 transitions, 25636 flow. Second operand has 107 states, 107 states have (on average 219.70093457943926) internal successors, (23508), 107 states have internal predecessors, (23508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:30:04,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:30:04,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 17:30:04,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:30:43,397 INFO L130 PetriNetUnfolder]: 9915/24240 cut-off events. [2022-12-13 17:30:43,397 INFO L131 PetriNetUnfolder]: For 15869789/15869789 co-relation queries the response was YES. [2022-12-13 17:30:43,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575836 conditions, 24240 events. 9915/24240 cut-off events. For 15869789/15869789 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 115085 event pairs, 169 based on Foata normal form. 848/25052 useless extension candidates. Maximal degree in co-relation 575549. Up to 6527 conditions per place. [2022-12-13 17:30:44,102 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 3424 selfloop transitions, 522 changer transitions 0/3950 dead transitions. [2022-12-13 17:30:44,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 983 places, 3950 transitions, 126659 flow [2022-12-13 17:30:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-13 17:30:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2022-12-13 17:30:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 24012 transitions. [2022-12-13 17:30:44,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.528037999736113 [2022-12-13 17:30:44,130 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 24012 transitions. [2022-12-13 17:30:44,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 24012 transitions. [2022-12-13 17:30:44,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:30:44,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 24012 transitions. [2022-12-13 17:30:44,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 226.52830188679246) internal successors, (24012), 106 states have internal predecessors, (24012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:30:44,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 429.0) internal successors, (45903), 107 states have internal predecessors, (45903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:30:44,189 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 429.0) internal successors, (45903), 107 states have internal predecessors, (45903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:30:44,189 INFO L175 Difference]: Start difference. First operand has 878 places, 1658 transitions, 25636 flow. Second operand 106 states and 24012 transitions. [2022-12-13 17:30:44,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 983 places, 3950 transitions, 126659 flow [2022-12-13 17:31:03,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 3950 transitions, 104625 flow, removed 8860 selfloop flow, removed 92 redundant places. [2022-12-13 17:31:03,275 INFO L231 Difference]: Finished difference. Result has 945 places, 1922 transitions, 20488 flow [2022-12-13 17:31:03,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=14549, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=20488, PETRI_PLACES=945, PETRI_TRANSITIONS=1922} [2022-12-13 17:31:03,277 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 897 predicate places. [2022-12-13 17:31:03,278 INFO L495 AbstractCegarLoop]: Abstraction has has 945 places, 1922 transitions, 20488 flow [2022-12-13 17:31:03,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 219.70093457943926) internal successors, (23508), 107 states have internal predecessors, (23508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:31:03,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:31:03,281 INFO L209 CegarLoopForPetriNet]: trace histogram [104, 104, 104, 104, 77, 77, 77, 77, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:31:03,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:31:03,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:31:03,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 17:31:03,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:31:03,485 INFO L85 PathProgramCache]: Analyzing trace with hash 596214758, now seen corresponding path program 5 times [2022-12-13 17:31:03,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:31:03,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929308941] [2022-12-13 17:31:03,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:03,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:31:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 0 proven. 36364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:31:14,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:31:14,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929308941] [2022-12-13 17:31:14,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929308941] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:31:14,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323208719] [2022-12-13 17:31:14,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 17:31:14,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:31:14,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:31:14,062 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:31:14,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5ce814-751e-48fa-b4ff-74e56008c704/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:31:16,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-12-13 17:31:16,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:31:16,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 204 conjunts are in the unsatisfiable core [2022-12-13 17:31:16,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:31:16,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:31:16,887 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-12-13 17:31:16,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 39 [2022-12-13 17:31:17,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:31:17,068 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 17:31:17,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 47 [2022-12-13 17:31:17,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:31:17,176 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 37 treesize of output 36 [2022-12-13 17:31:17,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 55 treesize of output 33 [2022-12-13 17:31:17,439 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-12-13 17:31:17,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 57 [2022-12-13 17:31:17,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:31:17,640 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 17:31:17,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 66 [2022-12-13 17:31:17,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:31:17,801 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 62 treesize of output 55 [2022-12-13 17:31:18,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 80 treesize of output 52 [2022-12-13 17:31:18,257 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-12-13 17:31:18,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 76 [2022-12-13 17:31:18,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:31:18,609 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 17:31:18,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 85 [2022-12-13 17:31:18,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:31:18,840 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 87 treesize of output 74 [2022-12-13 17:31:19,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 105 treesize of output 71 [2022-12-13 17:31:19,412 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-12-13 17:31:19,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 94 [2022-12-13 17:31:19,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:31:19,785 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 17:31:19,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 58 [2022-12-13 17:31:19,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:31:19,932 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 48 treesize of output 47 [2022-12-13 17:31:20,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 13 [2022-12-13 17:31:20,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:31:20,136 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 25 treesize of output 24 [2022-12-13 17:31:20,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:31:20,361 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 17:31:20,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 17:31:20,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:31:20,479 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 23 treesize of output 22 [2022-12-13 17:31:20,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-12-13 17:31:20,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:31:20,683 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 25 treesize of output 24 [2022-12-13 17:31:20,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:31:20,895 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 17:31:20,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 17:31:21,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:31:21,035 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 23 treesize of output 22 [2022-12-13 17:31:21,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-12-13 17:31:21,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:31:21,280 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 25 treesize of output 24 [2022-12-13 17:31:21,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:31:21,479 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 17:31:21,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 17:31:21,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:31:21,619 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 23 treesize of output 22 [2022-12-13 17:31:21,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-12-13 17:31:21,860 INFO L321 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2022-12-13 17:31:21,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2022-12-13 17:31:22,012 INFO L321 Elim1Store]: treesize reduction 53, result has 19.7 percent of original size [2022-12-13 17:31:22,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2022-12-13 17:31:22,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 22 [2022-12-13 17:31:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 12013 proven. 140 refuted. 0 times theorem prover too weak. 24211 trivial. 0 not checked. [2022-12-13 17:31:22,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:38:54,721 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4848 Int) (v_ArrVal_4846 Int) (v_ArrVal_4857 Int) (v_ArrVal_4868 Int) (v_ArrVal_4855 Int) (v_ArrVal_4853 Int) (v_ArrVal_4864 Int) (v_ArrVal_4843 Int) (v_ArrVal_4865 Int) (v_ArrVal_4862 Int) (v_ArrVal_4852 Int) (v_ArrVal_4860 Int) (v_ArrVal_4850 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| Int) (|v_t1Thread1of1ForFork0_~i~0#1_396| Int) (|v_t1Thread1of1ForFork0_~i~0#1_395| Int)) (let ((.cse0 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_4843)) (.cse1 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (let ((.cse13 (let ((.cse14 (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse0 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_4846) .cse1 v_ArrVal_4848)))) (store .cse14 |c_~#stored_elements~0.base| (store (select .cse14 |c_~#stored_elements~0.base|) (+ |c_~#stored_elements~0.offset| (* |c_t1Thread1of1ForFork0_~i~0#1| 4)) v_ArrVal_4850))))) (let ((.cse4 (select .cse13 |c_~#queue~0.base|))) (let ((.cse8 (store .cse4 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| 4) |c_~#queue~0.offset|) v_ArrVal_4852)) (.cse11 (+ 3208 |c_~#queue~0.offset|)) (.cse3 (+ |c_~#queue~0.offset| 3204))) (let ((.cse10 (let ((.cse12 (store .cse13 |c_~#queue~0.base| (store (store .cse8 .cse11 v_ArrVal_4853) .cse3 v_ArrVal_4855)))) (store .cse12 |c_~#stored_elements~0.base| (store (select .cse12 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_396| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4857))))) (let ((.cse6 (select .cse10 |c_~#queue~0.base|))) (let ((.cse7 (store .cse6 (+ |c_~#queue~0.offset| (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| 4)) v_ArrVal_4860))) (let ((.cse2 (select (let ((.cse9 (store .cse10 |c_~#queue~0.base| (store (store .cse7 .cse11 v_ArrVal_4862) .cse3 v_ArrVal_4864)))) (store .cse9 |c_~#stored_elements~0.base| (store (select .cse9 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_395| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4865))) |c_~#queue~0.base|)) (.cse5 (select .cse8 .cse3))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_4848) (not (= (select (store .cse2 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| 4) |c_~#queue~0.offset|) v_ArrVal_4868) .cse3) 800)) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| (select .cse2 .cse3))) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| (select .cse4 .cse3))) (< (+ .cse5 1) v_ArrVal_4855) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| (select .cse6 .cse3))) (= 800 .cse5) (not (<= (+ |v_t1Thread1of1ForFork0_~i~0#1_396| 1) |v_t1Thread1of1ForFork0_~i~0#1_395|)) (not (<= (+ |c_t1Thread1of1ForFork0_~i~0#1| 1) |v_t1Thread1of1ForFork0_~i~0#1_396|)) (< (+ (select .cse7 .cse3) 1) v_ArrVal_4864))))))))))) is different from false [2022-12-13 17:38:57,378 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4848 Int) (v_ArrVal_4846 Int) (v_ArrVal_4857 Int) (v_ArrVal_4868 Int) (v_ArrVal_4855 Int) (v_ArrVal_4853 Int) (v_ArrVal_4864 Int) (v_ArrVal_4843 Int) (v_ArrVal_4865 Int) (v_ArrVal_4862 Int) (v_ArrVal_4852 Int) (v_ArrVal_4860 Int) (v_ArrVal_4850 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| Int) (|v_t1Thread1of1ForFork0_~i~0#1_396| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_506| Int) (|v_t1Thread1of1ForFork0_~i~0#1_395| Int)) (let ((.cse4 (select |c_#memory_int| |c_~#queue~0.base|))) (let ((.cse1 (store .cse4 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_506| 4) |c_~#queue~0.offset|) v_ArrVal_4843)) (.cse11 (+ 3208 |c_~#queue~0.offset|)) (.cse2 (+ |c_~#queue~0.offset| 3204))) (let ((.cse13 (let ((.cse14 (store |c_#memory_int| |c_~#queue~0.base| (store (store .cse1 .cse11 v_ArrVal_4846) .cse2 v_ArrVal_4848)))) (store .cse14 |c_~#stored_elements~0.base| (store (select .cse14 |c_~#stored_elements~0.base|) (+ |c_~#stored_elements~0.offset| (* |c_t1Thread1of1ForFork0_~i~0#1| 4)) v_ArrVal_4850))))) (let ((.cse7 (select .cse13 |c_~#queue~0.base|))) (let ((.cse8 (store .cse7 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| 4) |c_~#queue~0.offset|) v_ArrVal_4852))) (let ((.cse10 (let ((.cse12 (store .cse13 |c_~#queue~0.base| (store (store .cse8 .cse11 v_ArrVal_4853) .cse2 v_ArrVal_4855)))) (store .cse12 |c_~#stored_elements~0.base| (store (select .cse12 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_396| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4857))))) (let ((.cse6 (select .cse10 |c_~#queue~0.base|))) (let ((.cse3 (store .cse6 (+ |c_~#queue~0.offset| (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| 4)) v_ArrVal_4860))) (let ((.cse5 (select (let ((.cse9 (store .cse10 |c_~#queue~0.base| (store (store .cse3 .cse11 v_ArrVal_4862) .cse2 v_ArrVal_4864)))) (store .cse9 |c_~#stored_elements~0.base| (store (select .cse9 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_395| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4865))) |c_~#queue~0.base|)) (.cse0 (select .cse8 .cse2))) (or (< (+ .cse0 1) v_ArrVal_4855) (< (+ (select .cse1 .cse2) 1) v_ArrVal_4848) (< (+ (select .cse3 .cse2) 1) v_ArrVal_4864) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_506| (select .cse4 .cse2))) (not (= 800 (select (store .cse5 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| 4) |c_~#queue~0.offset|) v_ArrVal_4868) .cse2))) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| (select .cse5 .cse2))) (not (<= (+ |v_t1Thread1of1ForFork0_~i~0#1_396| 1) |v_t1Thread1of1ForFork0_~i~0#1_395|)) (not (<= (+ |c_t1Thread1of1ForFork0_~i~0#1| 1) |v_t1Thread1of1ForFork0_~i~0#1_396|)) (= .cse0 800) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| (select .cse6 .cse2))) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| (select .cse7 .cse2)))))))))))))) is different from false