./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN --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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- 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-6b4ec56 [2022-11-20 11:58:15,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:58:15,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:58:15,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:58:15,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:58:15,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:58:15,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:58:15,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:58:15,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:58:15,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:58:15,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:58:15,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:58:15,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:58:15,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:58:15,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:58:15,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:58:15,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:58:15,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:58:15,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:58:15,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:58:15,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:58:15,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:58:15,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:58:15,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:58:15,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:58:15,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:58:15,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:58:15,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:58:15,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:58:15,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:58:15,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:58:15,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:58:15,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:58:15,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:58:15,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:58:15,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:58:15,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:58:15,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:58:15,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:58:15,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:58:15,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:58:15,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:58:15,563 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:58:15,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:58:15,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:58:15,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:58:15,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:58:15,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:58:15,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:58:15,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:58:15,566 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:58:15,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:58:15,575 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:58:15,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:58:15,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:58:15,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:58:15,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:58:15,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:58:15,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:58:15,577 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:58:15,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:58:15,577 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:58:15,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:58:15,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:58:15,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:58:15,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:58:15,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:15,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:58:15,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:58:15,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:58:15,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:58:15,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:58:15,581 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:58:15,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:58:15,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:58:15,582 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_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2022-11-20 11:58:15,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:58:16,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:58:16,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:58:16,045 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:58:16,046 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:58:16,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-20 11:58:19,616 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:58:19,926 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:58:19,927 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-20 11:58:19,953 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/data/fc7eca5e3/87f21ac615034b8681d0bef5b1df93e7/FLAG0ed9ddd01 [2022-11-20 11:58:19,970 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/data/fc7eca5e3/87f21ac615034b8681d0bef5b1df93e7 [2022-11-20 11:58:19,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:58:19,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:58:19,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:19,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:58:19,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:58:19,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:19" (1/1) ... [2022-11-20 11:58:19,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@737f444f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:19, skipping insertion in model container [2022-11-20 11:58:19,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:19" (1/1) ... [2022-11-20 11:58:20,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:58:20,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:58:20,255 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-20 11:58:20,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:58:20,463 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:58:20,478 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-20 11:58:20,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:58:20,559 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:58:20,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20 WrapperNode [2022-11-20 11:58:20,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:20,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:58:20,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:58:20,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:58:20,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,652 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 97 [2022-11-20 11:58:20,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:58:20,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:58:20,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:58:20,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:58:20,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,684 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:58:20,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:58:20,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:58:20,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:58:20,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (1/1) ... [2022-11-20 11:58:20,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:20,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:58:20,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:58:20,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:58:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-20 11:58:20,815 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-20 11:58:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:58:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:58:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:58:20,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:58:20,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:58:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:58:20,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:58:20,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:58:20,823 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:58:21,014 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:58:21,017 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:58:21,325 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:58:21,335 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:58:21,336 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:58:21,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:58:21 BoogieIcfgContainer [2022-11-20 11:58:21,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:58:21,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:58:21,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:58:21,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:58:21,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:58:19" (1/3) ... [2022-11-20 11:58:21,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ed624a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:58:21, skipping insertion in model container [2022-11-20 11:58:21,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:20" (2/3) ... [2022-11-20 11:58:21,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ed624a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:58:21, skipping insertion in model container [2022-11-20 11:58:21,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:58:21" (3/3) ... [2022-11-20 11:58:21,351 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2022-11-20 11:58:21,363 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:58:21,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:58:21,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:58:21,378 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:58:21,472 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:58:21,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 117 transitions, 239 flow [2022-11-20 11:58:21,599 INFO L130 PetriNetUnfolder]: 10/116 cut-off events. [2022-11-20 11:58:21,600 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:58:21,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 116 events. 10/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 179 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-11-20 11:58:21,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 117 transitions, 239 flow [2022-11-20 11:58:21,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 116 transitions, 235 flow [2022-11-20 11:58:21,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:58:21,683 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;@5a4a2e3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:58:21,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 11:58:21,770 INFO L130 PetriNetUnfolder]: 5/91 cut-off events. [2022-11-20 11:58:21,771 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:58:21,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:21,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:21,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 11:58:21,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:21,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1003523105, now seen corresponding path program 1 times [2022-11-20 11:58:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:21,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776283342] [2022-11-20 11:58:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:21,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:22,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:22,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776283342] [2022-11-20 11:58:22,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776283342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:22,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:22,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:58:22,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540786644] [2022-11-20 11:58:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:22,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:58:22,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:58:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:58:22,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2022-11-20 11:58:22,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 116 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 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) [2022-11-20 11:58:22,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:22,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2022-11-20 11:58:22,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:23,005 INFO L130 PetriNetUnfolder]: 191/763 cut-off events. [2022-11-20 11:58:23,006 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:58:23,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 763 events. 191/763 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4372 event pairs, 29 based on Foata normal form. 54/706 useless extension candidates. Maximal degree in co-relation 1036. Up to 110 conditions per place. [2022-11-20 11:58:23,020 INFO L137 encePairwiseOnDemand]: 99/117 looper letters, 51 selfloop transitions, 15 changer transitions 0/149 dead transitions. [2022-11-20 11:58:23,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 149 transitions, 433 flow [2022-11-20 11:58:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:58:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:58:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 781 transitions. [2022-11-20 11:58:23,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8344017094017094 [2022-11-20 11:58:23,054 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 781 transitions. [2022-11-20 11:58:23,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 781 transitions. [2022-11-20 11:58:23,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:23,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 781 transitions. [2022-11-20 11:58:23,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 97.625) internal successors, (781), 8 states have internal predecessors, (781), 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) [2022-11-20 11:58:23,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 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) [2022-11-20 11:58:23,084 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 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) [2022-11-20 11:58:23,086 INFO L175 Difference]: Start difference. First operand has 110 places, 116 transitions, 235 flow. Second operand 8 states and 781 transitions. [2022-11-20 11:58:23,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 149 transitions, 433 flow [2022-11-20 11:58:23,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 149 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:58:23,105 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 335 flow [2022-11-20 11:58:23,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=335, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2022-11-20 11:58:23,115 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 7 predicate places. [2022-11-20 11:58:23,116 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 335 flow [2022-11-20 11:58:23,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 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) [2022-11-20 11:58:23,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:23,117 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] [2022-11-20 11:58:23,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:58:23,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 11:58:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1280747719, now seen corresponding path program 1 times [2022-11-20 11:58:23,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:23,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261204095] [2022-11-20 11:58:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:23,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:23,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:23,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261204095] [2022-11-20 11:58:23,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261204095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:23,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:23,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:23,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73244] [2022-11-20 11:58:23,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:23,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:58:23,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:23,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:58:23,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:58:23,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 117 [2022-11-20 11:58:23,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2022-11-20 11:58:23,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:23,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 117 [2022-11-20 11:58:23,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:23,573 INFO L130 PetriNetUnfolder]: 9/158 cut-off events. [2022-11-20 11:58:23,573 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-20 11:58:23,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 158 events. 9/158 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 260 event pairs, 0 based on Foata normal form. 6/161 useless extension candidates. Maximal degree in co-relation 191. Up to 13 conditions per place. [2022-11-20 11:58:23,575 INFO L137 encePairwiseOnDemand]: 112/117 looper letters, 8 selfloop transitions, 5 changer transitions 4/113 dead transitions. [2022-11-20 11:58:23,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 113 transitions, 328 flow [2022-11-20 11:58:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:58:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:58:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2022-11-20 11:58:23,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2022-11-20 11:58:23,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2022-11-20 11:58:23,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2022-11-20 11:58:23,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:23,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2022-11-20 11:58:23,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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) [2022-11-20 11:58:23,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2022-11-20 11:58:23,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2022-11-20 11:58:23,583 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 335 flow. Second operand 3 states and 303 transitions. [2022-11-20 11:58:23,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 113 transitions, 328 flow [2022-11-20 11:58:23,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 309 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-11-20 11:58:23,590 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 274 flow [2022-11-20 11:58:23,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2022-11-20 11:58:23,591 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2022-11-20 11:58:23,591 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 274 flow [2022-11-20 11:58:23,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2022-11-20 11:58:23,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:23,592 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:23,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:58:23,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 11:58:23,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:23,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1067161623, now seen corresponding path program 1 times [2022-11-20 11:58:23,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:23,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336158289] [2022-11-20 11:58:23,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:23,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:23,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:23,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336158289] [2022-11-20 11:58:23,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336158289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:23,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:23,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:58:23,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848837567] [2022-11-20 11:58:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:23,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:58:23,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:58:23,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:58:23,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 117 [2022-11-20 11:58:23,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2022-11-20 11:58:23,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:23,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 117 [2022-11-20 11:58:23,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:23,898 INFO L130 PetriNetUnfolder]: 28/265 cut-off events. [2022-11-20 11:58:23,898 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-20 11:58:23,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 265 events. 28/265 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 858 event pairs, 9 based on Foata normal form. 4/259 useless extension candidates. Maximal degree in co-relation 367. Up to 33 conditions per place. [2022-11-20 11:58:23,901 INFO L137 encePairwiseOnDemand]: 108/117 looper letters, 19 selfloop transitions, 8 changer transitions 1/118 dead transitions. [2022-11-20 11:58:23,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 354 flow [2022-11-20 11:58:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:58:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:58:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 582 transitions. [2022-11-20 11:58:23,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2022-11-20 11:58:23,904 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 582 transitions. [2022-11-20 11:58:23,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 582 transitions. [2022-11-20 11:58:23,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:23,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 582 transitions. [2022-11-20 11:58:23,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 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) [2022-11-20 11:58:23,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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) [2022-11-20 11:58:23,910 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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) [2022-11-20 11:58:23,910 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 274 flow. Second operand 6 states and 582 transitions. [2022-11-20 11:58:23,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 354 flow [2022-11-20 11:58:23,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 118 transitions, 328 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-20 11:58:23,916 INFO L231 Difference]: Finished difference. Result has 117 places, 112 transitions, 302 flow [2022-11-20 11:58:23,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=117, PETRI_TRANSITIONS=112} [2022-11-20 11:58:23,917 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 7 predicate places. [2022-11-20 11:58:23,918 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 112 transitions, 302 flow [2022-11-20 11:58:23,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2022-11-20 11:58:23,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:23,919 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] [2022-11-20 11:58:23,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:58:23,920 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 11:58:23,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:23,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1868125995, now seen corresponding path program 1 times [2022-11-20 11:58:23,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:23,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889174650] [2022-11-20 11:58:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:23,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:24,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:24,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889174650] [2022-11-20 11:58:24,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889174650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:24,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:24,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:58:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968591240] [2022-11-20 11:58:24,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:24,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:58:24,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:58:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:58:24,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2022-11-20 11:58:24,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2022-11-20 11:58:24,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:24,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2022-11-20 11:58:24,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:24,346 INFO L130 PetriNetUnfolder]: 14/239 cut-off events. [2022-11-20 11:58:24,347 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2022-11-20 11:58:24,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 239 events. 14/239 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 547 event pairs, 0 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 327. Up to 21 conditions per place. [2022-11-20 11:58:24,349 INFO L137 encePairwiseOnDemand]: 106/117 looper letters, 33 selfloop transitions, 17 changer transitions 0/132 dead transitions. [2022-11-20 11:58:24,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 132 transitions, 506 flow [2022-11-20 11:58:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:58:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:58:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 734 transitions. [2022-11-20 11:58:24,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7841880341880342 [2022-11-20 11:58:24,354 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 734 transitions. [2022-11-20 11:58:24,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 734 transitions. [2022-11-20 11:58:24,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:24,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 734 transitions. [2022-11-20 11:58:24,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.75) internal successors, (734), 8 states have internal predecessors, (734), 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) [2022-11-20 11:58:24,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 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) [2022-11-20 11:58:24,364 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 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) [2022-11-20 11:58:24,365 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 302 flow. Second operand 8 states and 734 transitions. [2022-11-20 11:58:24,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 132 transitions, 506 flow [2022-11-20 11:58:24,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 132 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:58:24,380 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 412 flow [2022-11-20 11:58:24,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=412, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2022-11-20 11:58:24,382 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 13 predicate places. [2022-11-20 11:58:24,383 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 412 flow [2022-11-20 11:58:24,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2022-11-20 11:58:24,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:24,385 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:24,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:58:24,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 11:58:24,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash 657469605, now seen corresponding path program 1 times [2022-11-20 11:58:24,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:24,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575632306] [2022-11-20 11:58:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:24,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:24,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:24,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575632306] [2022-11-20 11:58:24,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575632306] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:58:24,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392663505] [2022-11-20 11:58:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:24,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:58:24,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:58:24,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:58:24,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:58:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:24,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:58:24,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:58:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:25,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:58:25,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392663505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:25,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:58:25,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2022-11-20 11:58:25,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452786051] [2022-11-20 11:58:25,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:25,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:58:25,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:25,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:58:25,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:58:25,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 117 [2022-11-20 11:58:25,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 412 flow. Second operand has 7 states, 7 states have (on average 94.14285714285714) internal successors, (659), 7 states have internal predecessors, (659), 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) [2022-11-20 11:58:25,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:25,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 117 [2022-11-20 11:58:25,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:25,268 INFO L130 PetriNetUnfolder]: 40/356 cut-off events. [2022-11-20 11:58:25,268 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2022-11-20 11:58:25,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 356 events. 40/356 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1321 event pairs, 14 based on Foata normal form. 4/348 useless extension candidates. Maximal degree in co-relation 612. Up to 38 conditions per place. [2022-11-20 11:58:25,274 INFO L137 encePairwiseOnDemand]: 109/117 looper letters, 35 selfloop transitions, 14 changer transitions 1/137 dead transitions. [2022-11-20 11:58:25,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 137 transitions, 585 flow [2022-11-20 11:58:25,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:58:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:58:25,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 868 transitions. [2022-11-20 11:58:25,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8243114909781576 [2022-11-20 11:58:25,278 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 868 transitions. [2022-11-20 11:58:25,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 868 transitions. [2022-11-20 11:58:25,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:25,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 868 transitions. [2022-11-20 11:58:25,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.44444444444444) internal successors, (868), 9 states have internal predecessors, (868), 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) [2022-11-20 11:58:25,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 117.0) internal successors, (1170), 10 states have internal predecessors, (1170), 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) [2022-11-20 11:58:25,285 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 117.0) internal successors, (1170), 10 states have internal predecessors, (1170), 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) [2022-11-20 11:58:25,285 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 412 flow. Second operand 9 states and 868 transitions. [2022-11-20 11:58:25,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 137 transitions, 585 flow [2022-11-20 11:58:25,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 137 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:58:25,293 INFO L231 Difference]: Finished difference. Result has 133 places, 125 transitions, 500 flow [2022-11-20 11:58:25,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=500, PETRI_PLACES=133, PETRI_TRANSITIONS=125} [2022-11-20 11:58:25,297 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 23 predicate places. [2022-11-20 11:58:25,298 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 125 transitions, 500 flow [2022-11-20 11:58:25,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.14285714285714) internal successors, (659), 7 states have internal predecessors, (659), 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) [2022-11-20 11:58:25,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:25,301 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:25,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:58:25,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:58:25,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 11:58:25,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:25,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2042940852, now seen corresponding path program 1 times [2022-11-20 11:58:25,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:25,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210881798] [2022-11-20 11:58:25,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:25,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:25,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:25,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210881798] [2022-11-20 11:58:25,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210881798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:25,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:25,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:58:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457329470] [2022-11-20 11:58:25,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:25,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:58:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:58:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:58:25,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 117 [2022-11-20 11:58:25,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 125 transitions, 500 flow. Second operand has 8 states, 8 states have (on average 86.75) internal successors, (694), 8 states have internal predecessors, (694), 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) [2022-11-20 11:58:25,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:25,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 117 [2022-11-20 11:58:25,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:26,089 INFO L130 PetriNetUnfolder]: 49/505 cut-off events. [2022-11-20 11:58:26,089 INFO L131 PetriNetUnfolder]: For 479/479 co-relation queries the response was YES. [2022-11-20 11:58:26,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 505 events. 49/505 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1985 event pairs, 4 based on Foata normal form. 2/491 useless extension candidates. Maximal degree in co-relation 886. Up to 43 conditions per place. [2022-11-20 11:58:26,094 INFO L137 encePairwiseOnDemand]: 101/117 looper letters, 38 selfloop transitions, 27 changer transitions 8/154 dead transitions. [2022-11-20 11:58:26,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 154 transitions, 806 flow [2022-11-20 11:58:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:58:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 11:58:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1242 transitions. [2022-11-20 11:58:26,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7582417582417582 [2022-11-20 11:58:26,128 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1242 transitions. [2022-11-20 11:58:26,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1242 transitions. [2022-11-20 11:58:26,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:26,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1242 transitions. [2022-11-20 11:58:26,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 88.71428571428571) internal successors, (1242), 14 states have internal predecessors, (1242), 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) [2022-11-20 11:58:26,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 117.0) internal successors, (1755), 15 states have internal predecessors, (1755), 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) [2022-11-20 11:58:26,138 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 117.0) internal successors, (1755), 15 states have internal predecessors, (1755), 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) [2022-11-20 11:58:26,139 INFO L175 Difference]: Start difference. First operand has 133 places, 125 transitions, 500 flow. Second operand 14 states and 1242 transitions. [2022-11-20 11:58:26,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 154 transitions, 806 flow [2022-11-20 11:58:26,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 154 transitions, 763 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-11-20 11:58:26,146 INFO L231 Difference]: Finished difference. Result has 144 places, 128 transitions, 566 flow [2022-11-20 11:58:26,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=566, PETRI_PLACES=144, PETRI_TRANSITIONS=128} [2022-11-20 11:58:26,150 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 34 predicate places. [2022-11-20 11:58:26,150 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 128 transitions, 566 flow [2022-11-20 11:58:26,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.75) internal successors, (694), 8 states have internal predecessors, (694), 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) [2022-11-20 11:58:26,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:26,151 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:26,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:58:26,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 11:58:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash -650039496, now seen corresponding path program 1 times [2022-11-20 11:58:26,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:26,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663019398] [2022-11-20 11:58:26,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:26,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:26,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663019398] [2022-11-20 11:58:26,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663019398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:26,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:26,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:58:26,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199397363] [2022-11-20 11:58:26,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:26,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:26,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:26,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:26,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:58:26,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 117 [2022-11-20 11:58:26,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 128 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 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) [2022-11-20 11:58:26,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:26,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 117 [2022-11-20 11:58:26,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:26,509 INFO L130 PetriNetUnfolder]: 79/548 cut-off events. [2022-11-20 11:58:26,510 INFO L131 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2022-11-20 11:58:26,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 548 events. 79/548 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2451 event pairs, 13 based on Foata normal form. 2/530 useless extension candidates. Maximal degree in co-relation 1058. Up to 100 conditions per place. [2022-11-20 11:58:26,514 INFO L137 encePairwiseOnDemand]: 107/117 looper letters, 0 selfloop transitions, 0 changer transitions 126/126 dead transitions. [2022-11-20 11:58:26,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 126 transitions, 613 flow [2022-11-20 11:58:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:58:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:58:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 749 transitions. [2022-11-20 11:58:26,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8002136752136753 [2022-11-20 11:58:26,517 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 749 transitions. [2022-11-20 11:58:26,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 749 transitions. [2022-11-20 11:58:26,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:26,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 749 transitions. [2022-11-20 11:58:26,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.625) internal successors, (749), 8 states have internal predecessors, (749), 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) [2022-11-20 11:58:26,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 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) [2022-11-20 11:58:26,524 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 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) [2022-11-20 11:58:26,524 INFO L175 Difference]: Start difference. First operand has 144 places, 128 transitions, 566 flow. Second operand 8 states and 749 transitions. [2022-11-20 11:58:26,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 126 transitions, 613 flow [2022-11-20 11:58:26,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 126 transitions, 565 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-11-20 11:58:26,531 INFO L231 Difference]: Finished difference. Result has 131 places, 0 transitions, 0 flow [2022-11-20 11:58:26,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=131, PETRI_TRANSITIONS=0} [2022-11-20 11:58:26,532 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 21 predicate places. [2022-11-20 11:58:26,532 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 0 transitions, 0 flow [2022-11-20 11:58:26,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 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) [2022-11-20 11:58:26,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-20 11:58:26,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-20 11:58:26,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-20 11:58:26,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-20 11:58:26,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-20 11:58:26,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:58:26,539 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:26,546 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:58:26,547 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:58:26,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:58:26 BasicIcfg [2022-11-20 11:58:26,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:58:26,553 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:58:26,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:58:26,554 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:58:26,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:58:21" (3/4) ... [2022-11-20 11:58:26,558 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:58:26,566 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2022-11-20 11:58:26,581 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 11:58:26,592 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:58:26,592 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:58:26,592 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:58:26,648 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:58:26,648 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:58:26,649 INFO L158 Benchmark]: Toolchain (without parser) took 6673.79ms. Allocated memory was 138.4MB in the beginning and 224.4MB in the end (delta: 86.0MB). Free memory was 74.4MB in the beginning and 115.6MB in the end (delta: -41.2MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2022-11-20 11:58:26,649 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 138.4MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:58:26,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.67ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 74.2MB in the beginning and 144.7MB in the end (delta: -70.5MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-11-20 11:58:26,650 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.88ms. Allocated memory is still 186.6MB. Free memory was 144.7MB in the beginning and 142.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:58:26,650 INFO L158 Benchmark]: Boogie Preprocessor took 34.99ms. Allocated memory is still 186.6MB. Free memory was 142.7MB in the beginning and 141.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:58:26,651 INFO L158 Benchmark]: RCFGBuilder took 649.42ms. Allocated memory is still 186.6MB. Free memory was 141.4MB in the beginning and 126.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 11:58:26,651 INFO L158 Benchmark]: TraceAbstraction took 5211.03ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 125.9MB in the beginning and 117.7MB in the end (delta: 8.2MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2022-11-20 11:58:26,651 INFO L158 Benchmark]: Witness Printer took 94.72ms. Allocated memory is still 224.4MB. Free memory was 117.7MB in the beginning and 115.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:58:26,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 138.4MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 576.67ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 74.2MB in the beginning and 144.7MB in the end (delta: -70.5MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.88ms. Allocated memory is still 186.6MB. Free memory was 144.7MB in the beginning and 142.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.99ms. Allocated memory is still 186.6MB. Free memory was 142.7MB in the beginning and 141.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 649.42ms. Allocated memory is still 186.6MB. Free memory was 141.4MB in the beginning and 126.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5211.03ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 125.9MB in the beginning and 117.7MB in the end (delta: 8.2MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. * Witness Printer took 94.72ms. Allocated memory is still 224.4MB. Free memory was 117.7MB in the beginning and 115.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 151 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.0s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 214 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 214 mSDsluCounter, 257 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 152 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 427 IncrementalHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 105 mSDtfsCounter, 427 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=566occurred in iteration=6, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 619 NumberOfCodeBlocks, 619 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 611 ConstructedInterpolants, 0 QuantifiedInterpolants, 1200 SizeOfPredicates, 4 NumberOfNonLiveVariables, 194 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 40/49 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:58:26,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd2bf1f-0e8c-4eef-b604-2f5ed0654688/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE