./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8 --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 251696ec6cec82b3ac56ff493f8f4412eaff7e5010650cc9da1e4c426de80d8c --- 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-e04fb08 [2022-11-16 11:09:06,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:09:06,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:09:06,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:09:06,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:09:06,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:09:06,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:09:06,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:09:06,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:09:06,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:09:06,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:09:06,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:09:06,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:09:06,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:09:06,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:09:06,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:09:06,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:09:06,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:09:06,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:09:06,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:09:06,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:09:06,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:09:06,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:09:06,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:09:06,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:09:06,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:09:06,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:09:06,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:09:06,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:09:06,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:09:06,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:09:06,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:09:06,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:09:06,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:09:06,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:09:06,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:09:06,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:09:06,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:09:06,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:09:06,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:09:06,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:09:06,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:09:06,484 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:09:06,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:09:06,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:09:06,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:09:06,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:09:06,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:09:06,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:09:06,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:09:06,488 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:09:06,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:09:06,488 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:09:06,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:09:06,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:09:06,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:09:06,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:09:06,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:09:06,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:09:06,490 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:09:06,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:09:06,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:09:06,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:09:06,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:09:06,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:09:06,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:09:06,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:09:06,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:09:06,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:09:06,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:09:06,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:09:06,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:09:06,493 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:09:06,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:09:06,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:09:06,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 251696ec6cec82b3ac56ff493f8f4412eaff7e5010650cc9da1e4c426de80d8c [2022-11-16 11:09:06,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:09:06,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:09:06,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:09:06,763 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:09:06,764 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:09:06,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2022-11-16 11:09:06,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/data/1c80471a6/9ed789909ee940b59a336ed243221f4f/FLAG41f6001bf [2022-11-16 11:09:07,329 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:09:07,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2022-11-16 11:09:07,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/data/1c80471a6/9ed789909ee940b59a336ed243221f4f/FLAG41f6001bf [2022-11-16 11:09:07,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/data/1c80471a6/9ed789909ee940b59a336ed243221f4f [2022-11-16 11:09:07,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:09:07,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:09:07,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:09:07,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:09:07,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:09:07,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:09:07" (1/1) ... [2022-11-16 11:09:07,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325f5645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:07, skipping insertion in model container [2022-11-16 11:09:07,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:09:07" (1/1) ... [2022-11-16 11:09:07,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:09:07,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:09:08,015 WARN L229 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_622199fd-fc4d-4d70-af78-23b097c44104/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2022-11-16 11:09:08,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:09:08,052 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:09:08,089 WARN L229 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_622199fd-fc4d-4d70-af78-23b097c44104/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2022-11-16 11:09:08,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:09:08,126 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:09:08,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08 WrapperNode [2022-11-16 11:09:08,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:09:08,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:09:08,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:09:08,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:09:08,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,208 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-11-16 11:09:08,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:09:08,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:09:08,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:09:08,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:09:08,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,270 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:09:08,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:09:08,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:09:08,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:09:08,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (1/1) ... [2022-11-16 11:09:08,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:09:08,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:08,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:09:08,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:09:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:09:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:09:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:09:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:09:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:09:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:09:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:09:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:09:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:09:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:09:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:09:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:09:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:09:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:09:08,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:09:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:09:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:09:08,396 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:09:08,532 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:09:08,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:09:08,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:09:09,096 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:09:09,097 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:09:09,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:09:09 BoogieIcfgContainer [2022-11-16 11:09:09,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:09:09,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:09:09,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:09:09,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:09:09,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:09:07" (1/3) ... [2022-11-16 11:09:09,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b0c8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:09:09, skipping insertion in model container [2022-11-16 11:09:09,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:08" (2/3) ... [2022-11-16 11:09:09,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b0c8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:09:09, skipping insertion in model container [2022-11-16 11:09:09,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:09:09" (3/3) ... [2022-11-16 11:09:09,114 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2022-11-16 11:09:09,124 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:09:09,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:09:09,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:09:09,142 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:09:09,268 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:09:09,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 154 transitions, 332 flow [2022-11-16 11:09:09,461 INFO L130 PetriNetUnfolder]: 12/151 cut-off events. [2022-11-16 11:09:09,466 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:09:09,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 151 events. 12/151 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2022-11-16 11:09:09,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 154 transitions, 332 flow [2022-11-16 11:09:09,482 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 140 transitions, 298 flow [2022-11-16 11:09:09,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:09:09,500 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;@2a904e65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:09:09,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 11:09:09,554 INFO L130 PetriNetUnfolder]: 12/139 cut-off events. [2022-11-16 11:09:09,555 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:09:09,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:09,556 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:09,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:09:09,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash 405465620, now seen corresponding path program 1 times [2022-11-16 11:09:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:09,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670615561] [2022-11-16 11:09:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:09,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:09,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:09,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670615561] [2022-11-16 11:09:09,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670615561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:09,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:09,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:09:09,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924250103] [2022-11-16 11:09:09,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:09,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:09:09,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:09,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:09:09,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:09:09,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 154 [2022-11-16 11:09:09,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 140 transitions, 298 flow. Second operand has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:09,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:09,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 154 [2022-11-16 11:09:09,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:10,060 INFO L130 PetriNetUnfolder]: 41/265 cut-off events. [2022-11-16 11:09:10,061 INFO L131 PetriNetUnfolder]: For 49/50 co-relation queries the response was YES. [2022-11-16 11:09:10,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 265 events. 41/265 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 715 event pairs, 15 based on Foata normal form. 42/276 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2022-11-16 11:09:10,066 INFO L137 encePairwiseOnDemand]: 146/154 looper letters, 9 selfloop transitions, 0 changer transitions 4/132 dead transitions. [2022-11-16 11:09:10,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 132 transitions, 300 flow [2022-11-16 11:09:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:09:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:09:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 289 transitions. [2022-11-16 11:09:10,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9383116883116883 [2022-11-16 11:09:10,085 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 289 transitions. [2022-11-16 11:09:10,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 289 transitions. [2022-11-16 11:09:10,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:10,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 289 transitions. [2022-11-16 11:09:10,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:10,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:10,112 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:10,115 INFO L175 Difference]: Start difference. First operand has 138 places, 140 transitions, 298 flow. Second operand 2 states and 289 transitions. [2022-11-16 11:09:10,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 132 transitions, 300 flow [2022-11-16 11:09:10,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 132 transitions, 288 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:09:10,136 INFO L231 Difference]: Finished difference. Result has 133 places, 128 transitions, 262 flow [2022-11-16 11:09:10,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=133, PETRI_TRANSITIONS=128} [2022-11-16 11:09:10,146 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, -5 predicate places. [2022-11-16 11:09:10,147 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 128 transitions, 262 flow [2022-11-16 11:09:10,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:10,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:10,149 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:10,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:09:10,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:09:10,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:10,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2142861004, now seen corresponding path program 1 times [2022-11-16 11:09:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:10,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024735403] [2022-11-16 11:09:10,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:10,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:11,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:11,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024735403] [2022-11-16 11:09:11,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024735403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:11,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:11,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:09:11,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300066719] [2022-11-16 11:09:11,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:11,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:09:11,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:11,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:09:11,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:09:11,167 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 154 [2022-11-16 11:09:11,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 128 transitions, 262 flow. Second operand has 8 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:11,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:11,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 154 [2022-11-16 11:09:11,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:11,605 INFO L130 PetriNetUnfolder]: 295/679 cut-off events. [2022-11-16 11:09:11,605 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-16 11:09:11,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 679 events. 295/679 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2975 event pairs, 167 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 1135. Up to 421 conditions per place. [2022-11-16 11:09:11,618 INFO L137 encePairwiseOnDemand]: 144/154 looper letters, 44 selfloop transitions, 6 changer transitions 4/136 dead transitions. [2022-11-16 11:09:11,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 136 transitions, 386 flow [2022-11-16 11:09:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:09:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:09:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 815 transitions. [2022-11-16 11:09:11,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.661525974025974 [2022-11-16 11:09:11,628 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 815 transitions. [2022-11-16 11:09:11,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 815 transitions. [2022-11-16 11:09:11,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:11,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 815 transitions. [2022-11-16 11:09:11,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.875) internal successors, (815), 8 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:11,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:11,636 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:11,637 INFO L175 Difference]: Start difference. First operand has 133 places, 128 transitions, 262 flow. Second operand 8 states and 815 transitions. [2022-11-16 11:09:11,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 136 transitions, 386 flow [2022-11-16 11:09:11,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:09:11,644 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 290 flow [2022-11-16 11:09:11,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=290, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-11-16 11:09:11,645 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2022-11-16 11:09:11,646 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 290 flow [2022-11-16 11:09:11,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:11,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:11,647 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:11,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:09:11,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:09:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:11,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1947980679, now seen corresponding path program 1 times [2022-11-16 11:09:11,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:11,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543347255] [2022-11-16 11:09:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:11,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:11,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:11,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543347255] [2022-11-16 11:09:11,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543347255] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:11,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302193658] [2022-11-16 11:09:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:11,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:11,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:11,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:11,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:09:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:12,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:09:12,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:12,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:12,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302193658] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:12,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:12,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-16 11:09:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285596992] [2022-11-16 11:09:12,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:12,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:09:12,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:12,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:09:12,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:09:12,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 154 [2022-11-16 11:09:12,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:12,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:12,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 154 [2022-11-16 11:09:12,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:12,771 INFO L130 PetriNetUnfolder]: 175/511 cut-off events. [2022-11-16 11:09:12,771 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-16 11:09:12,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 511 events. 175/511 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2090 event pairs, 45 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 827. Up to 137 conditions per place. [2022-11-16 11:09:12,777 INFO L137 encePairwiseOnDemand]: 146/154 looper letters, 33 selfloop transitions, 7 changer transitions 0/137 dead transitions. [2022-11-16 11:09:12,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 388 flow [2022-11-16 11:09:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:09:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:09:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 838 transitions. [2022-11-16 11:09:12,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7773654916512059 [2022-11-16 11:09:12,780 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 838 transitions. [2022-11-16 11:09:12,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 838 transitions. [2022-11-16 11:09:12,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:12,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 838 transitions. [2022-11-16 11:09:12,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:12,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:12,787 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:12,787 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 290 flow. Second operand 7 states and 838 transitions. [2022-11-16 11:09:12,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 388 flow [2022-11-16 11:09:12,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 370 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-16 11:09:12,792 INFO L231 Difference]: Finished difference. Result has 140 places, 131 transitions, 305 flow [2022-11-16 11:09:12,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2022-11-16 11:09:12,794 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2022-11-16 11:09:12,794 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 305 flow [2022-11-16 11:09:12,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:12,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:12,795 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:12,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:13,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:13,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:09:13,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1971120592, now seen corresponding path program 1 times [2022-11-16 11:09:13,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:13,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106816389] [2022-11-16 11:09:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:13,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:09:13,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:13,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106816389] [2022-11-16 11:09:13,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106816389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:13,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660595841] [2022-11-16 11:09:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:13,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:13,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:13,342 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:13,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:09:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:13,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:09:13,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:09:13,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:09:14,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660595841] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:14,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:14,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-16 11:09:14,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455658567] [2022-11-16 11:09:14,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:14,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:09:14,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:14,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:09:14,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:09:14,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 154 [2022-11-16 11:09:14,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 305 flow. Second operand has 9 states, 9 states have (on average 110.33333333333333) internal successors, (993), 9 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:14,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:14,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 154 [2022-11-16 11:09:14,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:14,567 INFO L130 PetriNetUnfolder]: 600/1204 cut-off events. [2022-11-16 11:09:14,567 INFO L131 PetriNetUnfolder]: For 404/584 co-relation queries the response was YES. [2022-11-16 11:09:14,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 1204 events. 600/1204 cut-off events. For 404/584 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6302 event pairs, 103 based on Foata normal form. 180/1238 useless extension candidates. Maximal degree in co-relation 2453. Up to 249 conditions per place. [2022-11-16 11:09:14,578 INFO L137 encePairwiseOnDemand]: 142/154 looper letters, 74 selfloop transitions, 19 changer transitions 0/183 dead transitions. [2022-11-16 11:09:14,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 183 transitions, 644 flow [2022-11-16 11:09:14,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:09:14,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:09:14,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1264 transitions. [2022-11-16 11:09:14,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7461629279811098 [2022-11-16 11:09:14,582 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1264 transitions. [2022-11-16 11:09:14,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1264 transitions. [2022-11-16 11:09:14,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:14,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1264 transitions. [2022-11-16 11:09:14,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.9090909090909) internal successors, (1264), 11 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:14,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 154.0) internal successors, (1848), 12 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:14,591 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 154.0) internal successors, (1848), 12 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:14,591 INFO L175 Difference]: Start difference. First operand has 140 places, 131 transitions, 305 flow. Second operand 11 states and 1264 transitions. [2022-11-16 11:09:14,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 183 transitions, 644 flow [2022-11-16 11:09:14,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 183 transitions, 631 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:09:14,597 INFO L231 Difference]: Finished difference. Result has 152 places, 143 transitions, 404 flow [2022-11-16 11:09:14,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=404, PETRI_PLACES=152, PETRI_TRANSITIONS=143} [2022-11-16 11:09:14,598 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 14 predicate places. [2022-11-16 11:09:14,598 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 143 transitions, 404 flow [2022-11-16 11:09:14,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.33333333333333) internal successors, (993), 9 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:14,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:14,599 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:14,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:14,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:14,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:09:14,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:14,806 INFO L85 PathProgramCache]: Analyzing trace with hash 797684560, now seen corresponding path program 2 times [2022-11-16 11:09:14,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:14,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880028619] [2022-11-16 11:09:14,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:14,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:09:15,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:15,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880028619] [2022-11-16 11:09:15,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880028619] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:15,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723297801] [2022-11-16 11:09:15,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:09:15,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:15,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:15,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:15,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:09:15,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:09:15,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:15,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:09:15,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:09:15,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:15,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723297801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:15,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:09:15,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 11:09:15,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890455747] [2022-11-16 11:09:15,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:15,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:09:15,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:15,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:09:15,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:09:15,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 154 [2022-11-16 11:09:15,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 143 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:15,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:15,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 154 [2022-11-16 11:09:15,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:16,068 INFO L130 PetriNetUnfolder]: 412/876 cut-off events. [2022-11-16 11:09:16,069 INFO L131 PetriNetUnfolder]: For 824/929 co-relation queries the response was YES. [2022-11-16 11:09:16,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 876 events. 412/876 cut-off events. For 824/929 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3967 event pairs, 118 based on Foata normal form. 131/985 useless extension candidates. Maximal degree in co-relation 2190. Up to 334 conditions per place. [2022-11-16 11:09:16,116 INFO L137 encePairwiseOnDemand]: 145/154 looper letters, 42 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2022-11-16 11:09:16,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 145 transitions, 503 flow [2022-11-16 11:09:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:09:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:09:16,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 865 transitions. [2022-11-16 11:09:16,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7021103896103896 [2022-11-16 11:09:16,121 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 865 transitions. [2022-11-16 11:09:16,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 865 transitions. [2022-11-16 11:09:16,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:16,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 865 transitions. [2022-11-16 11:09:16,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:16,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:16,128 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:16,129 INFO L175 Difference]: Start difference. First operand has 152 places, 143 transitions, 404 flow. Second operand 8 states and 865 transitions. [2022-11-16 11:09:16,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 145 transitions, 503 flow [2022-11-16 11:09:16,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 490 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-16 11:09:16,141 INFO L231 Difference]: Finished difference. Result has 151 places, 137 transitions, 381 flow [2022-11-16 11:09:16,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=381, PETRI_PLACES=151, PETRI_TRANSITIONS=137} [2022-11-16 11:09:16,145 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 13 predicate places. [2022-11-16 11:09:16,146 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 137 transitions, 381 flow [2022-11-16 11:09:16,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:16,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:16,147 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:16,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:16,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:16,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:09:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:16,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1636578117, now seen corresponding path program 1 times [2022-11-16 11:09:16,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:16,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431176] [2022-11-16 11:09:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:16,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:09:18,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:18,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431176] [2022-11-16 11:09:18,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:18,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750191127] [2022-11-16 11:09:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:18,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:18,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:18,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:18,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:09:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:18,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 11:09:18,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:19,847 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:09:19,848 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 69 treesize of output 43 [2022-11-16 11:09:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:20,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:22,381 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:09:22,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 161 [2022-11-16 11:09:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:31,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750191127] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:31,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:09:31,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 19] total 50 [2022-11-16 11:09:31,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170976319] [2022-11-16 11:09:31,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:31,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-16 11:09:31,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-16 11:09:31,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=2064, Unknown=0, NotChecked=0, Total=2450 [2022-11-16 11:09:31,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 154 [2022-11-16 11:09:31,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 137 transitions, 381 flow. Second operand has 50 states, 50 states have (on average 69.76) internal successors, (3488), 50 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:31,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:31,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 154 [2022-11-16 11:09:31,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:38,198 INFO L130 PetriNetUnfolder]: 4843/7968 cut-off events. [2022-11-16 11:09:38,198 INFO L131 PetriNetUnfolder]: For 6581/6581 co-relation queries the response was YES. [2022-11-16 11:09:38,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20310 conditions, 7968 events. 4843/7968 cut-off events. For 6581/6581 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 52666 event pairs, 450 based on Foata normal form. 1/7880 useless extension candidates. Maximal degree in co-relation 20298. Up to 2919 conditions per place. [2022-11-16 11:09:38,283 INFO L137 encePairwiseOnDemand]: 121/154 looper letters, 314 selfloop transitions, 108 changer transitions 9/484 dead transitions. [2022-11-16 11:09:38,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 484 transitions, 2430 flow [2022-11-16 11:09:38,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:09:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 11:09:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3313 transitions. [2022-11-16 11:09:38,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4889315230224321 [2022-11-16 11:09:38,295 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3313 transitions. [2022-11-16 11:09:38,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3313 transitions. [2022-11-16 11:09:38,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:38,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3313 transitions. [2022-11-16 11:09:38,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 75.29545454545455) internal successors, (3313), 44 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:38,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 154.0) internal successors, (6930), 45 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:38,327 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 154.0) internal successors, (6930), 45 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:38,327 INFO L175 Difference]: Start difference. First operand has 151 places, 137 transitions, 381 flow. Second operand 44 states and 3313 transitions. [2022-11-16 11:09:38,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 484 transitions, 2430 flow [2022-11-16 11:09:38,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 484 transitions, 2397 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:09:38,419 INFO L231 Difference]: Finished difference. Result has 210 places, 237 transitions, 1128 flow [2022-11-16 11:09:38,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1128, PETRI_PLACES=210, PETRI_TRANSITIONS=237} [2022-11-16 11:09:38,422 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 72 predicate places. [2022-11-16 11:09:38,423 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 237 transitions, 1128 flow [2022-11-16 11:09:38,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 69.76) internal successors, (3488), 50 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:38,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:38,426 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:38,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:38,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:09:38,633 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:09:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1813782651, now seen corresponding path program 2 times [2022-11-16 11:09:38,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:38,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161017983] [2022-11-16 11:09:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:41,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:41,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161017983] [2022-11-16 11:09:41,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161017983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:41,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472995516] [2022-11-16 11:09:41,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:09:41,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:41,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:41,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:41,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:09:41,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:09:41,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:41,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-16 11:09:41,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:42,102 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 11 treesize of output 7 [2022-11-16 11:09:42,665 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 6 treesize of output 5 [2022-11-16 11:09:42,882 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 6 treesize of output 5 [2022-11-16 11:09:43,233 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 6 treesize of output 5 [2022-11-16 11:09:44,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:09:44,307 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 63 treesize of output 43 [2022-11-16 11:09:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:44,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:57,513 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (< c_~max2~0 c_~max3~0)) (.cse8 (= c_~max1~0 c_~max2~0))) (and (or .cse0 (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (~M~0 Int) (v_ArrVal_192 (Array Int Int))) (let ((.cse1 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< c_~max3~0 (select .cse1 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (not (< c_~max1~0 .cse2)) (< 0 ~M~0) (< ~M~0 0) (= .cse2 c_~max2~0)))))) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (~M~0 Int)) (let ((.cse4 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse3 (select .cse4 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (not (< c_~max3~0 .cse3)) (< 0 ~M~0) (< ~M~0 0) (<= .cse3 c_~max2~0) (< c_~max1~0 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (= .cse3 c_~max1~0))))) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (~M~0 Int)) (let ((.cse7 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse6 (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (select .cse7 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (not (< c_~max3~0 .cse5)) (not (< c_~max1~0 .cse6)) (< 0 ~M~0) (< ~M~0 0) (= .cse6 c_~max2~0) (< c_~max2~0 .cse5))))) (or (and (or .cse8 .cse0) (or (= c_~max1~0 c_~max3~0) (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (~M~0 Int) (v_ArrVal_192 (Array Int Int))) (let ((.cse9 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (< c_~max3~0 (select .cse9 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (< 0 ~M~0) (< ~M~0 0) (< c_~max1~0 (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (or (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (~M~0 Int) (v_ArrVal_192 (Array Int Int))) (let ((.cse11 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse10 (select .cse11 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (not (< c_~max3~0 .cse10)) (< 0 ~M~0) (< ~M~0 0) (< c_~max1~0 (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (< c_~max2~0 .cse10))))) .cse8) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (~M~0 Int)) (let ((.cse12 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< c_~max3~0 (select .cse12 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (= .cse13 c_~max3~0) (not (< c_~max1~0 .cse13)) (< 0 ~M~0) (< ~M~0 0))))))) is different from false [2022-11-16 11:09:58,440 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:09:58,441 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 61 treesize of output 49 [2022-11-16 11:09:58,456 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:09:58,457 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 255 treesize of output 247 [2022-11-16 11:09:58,478 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:09:58,478 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 243 treesize of output 231 [2022-11-16 11:09:58,497 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:09:58,498 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 227 treesize of output 199 [2022-11-16 11:09:58,517 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:09:58,518 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 101 treesize of output 97 [2022-11-16 11:09:58,696 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:09:58,696 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 126 treesize of output 1 [2022-11-16 11:09:58,706 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:09:58,707 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 94 treesize of output 1 [2022-11-16 11:09:58,718 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:09:58,719 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 123 treesize of output 1 [2022-11-16 11:09:58,730 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:09:58,731 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 90 treesize of output 1 [2022-11-16 11:09:58,743 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:09:58,743 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 90 treesize of output 1 [2022-11-16 11:09:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-16 11:09:59,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472995516] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:59,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:09:59,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 30, 24] total 71 [2022-11-16 11:09:59,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832184824] [2022-11-16 11:09:59,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:59,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-11-16 11:09:59,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-11-16 11:09:59,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=851, Invalid=3937, Unknown=46, NotChecked=136, Total=4970 [2022-11-16 11:09:59,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2022-11-16 11:09:59,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 237 transitions, 1128 flow. Second operand has 71 states, 71 states have (on average 57.929577464788736) internal successors, (4113), 71 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:59,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:59,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2022-11-16 11:09:59,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:30,694 INFO L130 PetriNetUnfolder]: 12004/19743 cut-off events. [2022-11-16 11:10:30,694 INFO L131 PetriNetUnfolder]: For 57651/57927 co-relation queries the response was YES. [2022-11-16 11:10:30,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67835 conditions, 19743 events. 12004/19743 cut-off events. For 57651/57927 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 150987 event pairs, 363 based on Foata normal form. 10/19676 useless extension candidates. Maximal degree in co-relation 67803. Up to 4153 conditions per place. [2022-11-16 11:10:30,910 INFO L137 encePairwiseOnDemand]: 111/154 looper letters, 767 selfloop transitions, 685 changer transitions 30/1530 dead transitions. [2022-11-16 11:10:30,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 1530 transitions, 11167 flow [2022-11-16 11:10:30,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-11-16 11:10:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2022-11-16 11:10:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 8504 transitions. [2022-11-16 11:10:30,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4120953673192479 [2022-11-16 11:10:30,941 INFO L72 ComplementDD]: Start complementDD. Operand 134 states and 8504 transitions. [2022-11-16 11:10:30,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 8504 transitions. [2022-11-16 11:10:30,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:30,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 134 states and 8504 transitions. [2022-11-16 11:10:30,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 135 states, 134 states have (on average 63.46268656716418) internal successors, (8504), 134 states have internal predecessors, (8504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:31,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 135 states, 135 states have (on average 154.0) internal successors, (20790), 135 states have internal predecessors, (20790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:31,029 INFO L81 ComplementDD]: Finished complementDD. Result has 135 states, 135 states have (on average 154.0) internal successors, (20790), 135 states have internal predecessors, (20790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:31,038 INFO L175 Difference]: Start difference. First operand has 210 places, 237 transitions, 1128 flow. Second operand 134 states and 8504 transitions. [2022-11-16 11:10:31,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 1530 transitions, 11167 flow [2022-11-16 11:10:32,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1530 transitions, 11078 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-11-16 11:10:32,059 INFO L231 Difference]: Finished difference. Result has 386 places, 904 transitions, 8025 flow [2022-11-16 11:10:32,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=134, PETRI_FLOW=8025, PETRI_PLACES=386, PETRI_TRANSITIONS=904} [2022-11-16 11:10:32,060 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 248 predicate places. [2022-11-16 11:10:32,061 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 904 transitions, 8025 flow [2022-11-16 11:10:32,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 57.929577464788736) internal successors, (4113), 71 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:32,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:32,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:32,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:32,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:32,269 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:10:32,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:32,269 INFO L85 PathProgramCache]: Analyzing trace with hash 919756817, now seen corresponding path program 3 times [2022-11-16 11:10:32,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:32,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302258613] [2022-11-16 11:10:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:32,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:34,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:34,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302258613] [2022-11-16 11:10:34,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302258613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:34,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293685900] [2022-11-16 11:10:34,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:10:34,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:34,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:34,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:34,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:10:34,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 11:10:34,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:10:34,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 11:10:34,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:36,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:10:36,177 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 69 treesize of output 43 [2022-11-16 11:10:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:10:36,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:38,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:10:38,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 161 [2022-11-16 11:10:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:10:46,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293685900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:46,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:10:46,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 19] total 54 [2022-11-16 11:10:46,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832467380] [2022-11-16 11:10:46,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:46,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-16 11:10:46,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:46,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-16 11:10:46,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=2433, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 11:10:46,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-16 11:10:46,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 904 transitions, 8025 flow. Second operand has 54 states, 54 states have (on average 68.5925925925926) internal successors, (3704), 54 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:46,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:46,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-16 11:10:46,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:14,923 INFO L130 PetriNetUnfolder]: 20941/33649 cut-off events. [2022-11-16 11:11:14,923 INFO L131 PetriNetUnfolder]: For 364814/366239 co-relation queries the response was YES. [2022-11-16 11:11:15,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167581 conditions, 33649 events. 20941/33649 cut-off events. For 364814/366239 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 271729 event pairs, 1348 based on Foata normal form. 44/33447 useless extension candidates. Maximal degree in co-relation 167492. Up to 10168 conditions per place. [2022-11-16 11:11:15,504 INFO L137 encePairwiseOnDemand]: 117/154 looper letters, 1220 selfloop transitions, 1702 changer transitions 20/2995 dead transitions. [2022-11-16 11:11:15,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 2995 transitions, 33231 flow [2022-11-16 11:11:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-11-16 11:11:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2022-11-16 11:11:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 9444 transitions. [2022-11-16 11:11:15,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4753850800362428 [2022-11-16 11:11:15,532 INFO L72 ComplementDD]: Start complementDD. Operand 129 states and 9444 transitions. [2022-11-16 11:11:15,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 9444 transitions. [2022-11-16 11:11:15,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:15,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 129 states and 9444 transitions. [2022-11-16 11:11:15,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 130 states, 129 states have (on average 73.20930232558139) internal successors, (9444), 129 states have internal predecessors, (9444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:15,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 130 states, 130 states have (on average 154.0) internal successors, (20020), 130 states have internal predecessors, (20020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:15,606 INFO L81 ComplementDD]: Finished complementDD. Result has 130 states, 130 states have (on average 154.0) internal successors, (20020), 130 states have internal predecessors, (20020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:15,606 INFO L175 Difference]: Start difference. First operand has 386 places, 904 transitions, 8025 flow. Second operand 129 states and 9444 transitions. [2022-11-16 11:11:15,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 2995 transitions, 33231 flow [2022-11-16 11:11:30,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 2995 transitions, 30475 flow, removed 1364 selfloop flow, removed 20 redundant places. [2022-11-16 11:11:30,274 INFO L231 Difference]: Finished difference. Result has 541 places, 2212 transitions, 24531 flow [2022-11-16 11:11:30,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6965, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=129, PETRI_FLOW=24531, PETRI_PLACES=541, PETRI_TRANSITIONS=2212} [2022-11-16 11:11:30,276 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 403 predicate places. [2022-11-16 11:11:30,276 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 2212 transitions, 24531 flow [2022-11-16 11:11:30,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 68.5925925925926) internal successors, (3704), 54 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:30,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:30,278 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:30,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:11:30,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:30,483 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:11:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:30,484 INFO L85 PathProgramCache]: Analyzing trace with hash -500171267, now seen corresponding path program 4 times [2022-11-16 11:11:30,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:30,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3395346] [2022-11-16 11:11:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:30,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:32,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:32,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3395346] [2022-11-16 11:11:32,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3395346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:11:32,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830247944] [2022-11-16 11:11:32,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:11:32,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:32,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:32,839 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:32,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:11:32,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:11:32,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:11:32,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 11:11:32,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:35,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:11:35,189 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 69 treesize of output 43 [2022-11-16 11:11:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:35,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:11:37,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:11:37,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 161 [2022-11-16 11:11:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:46,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830247944] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:11:46,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:11:46,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 22] total 60 [2022-11-16 11:11:46,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48242457] [2022-11-16 11:11:46,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:11:46,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-16 11:11:46,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:46,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-16 11:11:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=2916, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 11:11:46,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-16 11:11:46,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 2212 transitions, 24531 flow. Second operand has 60 states, 60 states have (on average 68.06666666666666) internal successors, (4084), 60 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:46,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:46,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-16 11:11:46,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:35,277 INFO L130 PetriNetUnfolder]: 33445/54811 cut-off events. [2022-11-16 11:12:35,278 INFO L131 PetriNetUnfolder]: For 1382127/1394601 co-relation queries the response was YES. [2022-11-16 11:12:36,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340256 conditions, 54811 events. 33445/54811 cut-off events. For 1382127/1394601 co-relation queries the response was YES. Maximal size of possible extension queue 2720. Compared 482101 event pairs, 1782 based on Foata normal form. 330/54844 useless extension candidates. Maximal degree in co-relation 340120. Up to 10852 conditions per place. [2022-11-16 11:12:36,897 INFO L137 encePairwiseOnDemand]: 111/154 looper letters, 1813 selfloop transitions, 3737 changer transitions 15/5646 dead transitions. [2022-11-16 11:12:36,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 5646 transitions, 78190 flow [2022-11-16 11:12:36,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-16 11:12:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-11-16 11:12:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 6625 transitions. [2022-11-16 11:12:36,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.488857733175915 [2022-11-16 11:12:36,920 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 6625 transitions. [2022-11-16 11:12:36,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 6625 transitions. [2022-11-16 11:12:36,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:36,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 6625 transitions. [2022-11-16 11:12:36,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 75.2840909090909) internal successors, (6625), 88 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:36,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 154.0) internal successors, (13706), 89 states have internal predecessors, (13706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:36,971 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 154.0) internal successors, (13706), 89 states have internal predecessors, (13706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:36,972 INFO L175 Difference]: Start difference. First operand has 541 places, 2212 transitions, 24531 flow. Second operand 88 states and 6625 transitions. [2022-11-16 11:12:36,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 5646 transitions, 78190 flow [2022-11-16 11:14:07,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 5646 transitions, 69863 flow, removed 4137 selfloop flow, removed 18 redundant places. [2022-11-16 11:14:07,453 INFO L231 Difference]: Finished difference. Result has 655 places, 4568 transitions, 62844 flow [2022-11-16 11:14:07,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=22427, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1499, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=62844, PETRI_PLACES=655, PETRI_TRANSITIONS=4568} [2022-11-16 11:14:07,456 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 517 predicate places. [2022-11-16 11:14:07,456 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 4568 transitions, 62844 flow [2022-11-16 11:14:07,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 68.06666666666666) internal successors, (4084), 60 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:07,458 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:07,458 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:07,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:14:07,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 11:14:07,665 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:14:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash -954196179, now seen corresponding path program 5 times [2022-11-16 11:14:07,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:07,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831696369] [2022-11-16 11:14:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:07,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:14:09,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:09,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831696369] [2022-11-16 11:14:09,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831696369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:09,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543327268] [2022-11-16 11:14:09,890 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:14:09,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:09,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:09,891 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:09,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_622199fd-fc4d-4d70-af78-23b097c44104/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:14:10,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:14:10,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:14:10,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 11:14:10,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:12,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:14:12,052 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 35 treesize of output 33 [2022-11-16 11:14:12,908 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:14:12,908 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 63 treesize of output 43 [2022-11-16 11:14:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:13,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:14:15,452 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~max1~0 c_~max2~0))) (and (or (and (= c_~max1~0 c_~max3~0) (< c_~max2~0 c_~max3~0)) (forall ((v_ArrVal_290 (Array Int Int)) (~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (not (< ~M~0 c_~N~0)) (< c_~max3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_290) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4)))))) (and .cse0 (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_290 (Array Int Int)) (~M~0 Int)) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_290) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= (+ 2 ~M~0) c_~N~0) (not (< c_~max3~0 .cse1)) (not (< ~M~0 c_~N~0)) (= .cse1 c_~max1~0) (<= .cse1 c_~max2~0)))) (or .cse0 (forall ((v_ArrVal_290 (Array Int Int)) (~M~0 Int)) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_290) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (< c_~max2~0 .cse2) (<= (+ 2 ~M~0) c_~N~0) (not (< c_~max3~0 .cse2)) (not (< ~M~0 c_~N~0)))))))) is different from false [2022-11-16 11:14:16,263 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:14:16,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 275 treesize of output 275 [2022-11-16 11:14:16,282 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 180 treesize of output 162 [2022-11-16 11:14:16,298 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 162 treesize of output 150 [2022-11-16 11:14:16,313 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 150 treesize of output 144 [2022-11-16 11:14:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-16 11:14:26,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543327268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:14:26,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:14:26,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 28] total 66 [2022-11-16 11:14:26,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58320359] [2022-11-16 11:14:26,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:14:26,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-16 11:14:26,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:26,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-16 11:14:26,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=3661, Unknown=1, NotChecked=126, Total=4290 [2022-11-16 11:14:26,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 154 [2022-11-16 11:14:26,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 4568 transitions, 62844 flow. Second operand has 66 states, 66 states have (on average 57.07575757575758) internal successors, (3767), 66 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:26,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:26,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 154 [2022-11-16 11:14:26,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand