./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.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_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/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_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/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_5d585fe0-76ee-4716-8f4d-d4054a239e2b/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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- 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 11:58:55,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:58:55,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:58:55,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:58:55,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:58:55,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:58:55,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:58:55,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:58:55,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:58:55,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:58:55,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:58:55,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:58:55,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:58:55,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:58:55,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:58:55,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:58:55,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:58:55,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:58:55,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:58:55,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:58:55,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:58:55,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:58:55,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:58:55,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:58:55,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:58:55,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:58:55,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:58:55,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:58:55,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:58:55,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:58:55,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:58:55,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:58:55,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:58:55,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:58:55,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:58:55,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:58:55,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:58:55,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:58:55,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:58:55,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:58:55,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:58:55,774 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:58:55,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:58:55,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:58:55,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:58:55,828 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:58:55,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:58:55,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:58:55,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:58:55,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:58:55,831 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:58:55,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:58:55,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:58:55,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:58:55,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:58:55,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:58:55,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:58:55,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:58:55,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:58:55,835 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:58:55,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:58:55,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:58:55,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:58:55,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:58:55,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:58:55,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:58:55,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:55,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:58:55,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:58:55,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:58:55,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:58:55,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:58:55,841 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:58:55,841 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:58:55,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:58:55,842 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_5d585fe0-76ee-4716-8f4d-d4054a239e2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2022-11-20 11:58:56,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:58:56,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:58:56,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:58:56,271 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:58:56,272 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:58:56,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-20 11:59:00,232 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:59:00,592 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:59:00,592 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-20 11:59:00,626 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/data/1ff0c2c44/7091d1ccc87145968f903d319c6267ee/FLAG424f199a9 [2022-11-20 11:59:00,650 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/data/1ff0c2c44/7091d1ccc87145968f903d319c6267ee [2022-11-20 11:59:00,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:59:00,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:59:00,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:00,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:59:00,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:59:00,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:00" (1/1) ... [2022-11-20 11:59:00,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24414f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:00, skipping insertion in model container [2022-11-20 11:59:00,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:00" (1/1) ... [2022-11-20 11:59:00,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:59:00,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:59:01,033 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_5d585fe0-76ee-4716-8f4d-d4054a239e2b/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-20 11:59:01,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:01,289 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:59:01,308 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_5d585fe0-76ee-4716-8f4d-d4054a239e2b/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-20 11:59:01,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:01,453 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:59:01,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01 WrapperNode [2022-11-20 11:59:01,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:01,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:01,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:59:01,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:59:01,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,538 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-11-20 11:59:01,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:01,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:59:01,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:59:01,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:59:01,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,592 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:59:01,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:59:01,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:59:01,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:59:01,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:59:01,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:01,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:59:01,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:59:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:59:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:59:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:59:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:59:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:59:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 11:59:01,724 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 11:59:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 11:59:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 11:59:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 11:59:01,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 11:59:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-20 11:59:01,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-20 11:59:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:59:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:59:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:59:01,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:59:01,730 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 11:59:02,026 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:59:02,041 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:59:02,277 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:59:02,286 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:59:02,294 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:59:02,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:02 BoogieIcfgContainer [2022-11-20 11:59:02,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:59:02,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:59:02,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:59:02,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:59:02,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:59:00" (1/3) ... [2022-11-20 11:59:02,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538a874d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:02, skipping insertion in model container [2022-11-20 11:59:02,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01" (2/3) ... [2022-11-20 11:59:02,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538a874d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:02, skipping insertion in model container [2022-11-20 11:59:02,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:02" (3/3) ... [2022-11-20 11:59:02,310 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-20 11:59:02,322 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:59:02,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:59:02,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:59:02,337 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:59:02,440 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:59:02,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 105 transitions, 230 flow [2022-11-20 11:59:02,578 INFO L130 PetriNetUnfolder]: 2/101 cut-off events. [2022-11-20 11:59:02,579 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:59:02,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 2/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-11-20 11:59:02,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 105 transitions, 230 flow [2022-11-20 11:59:02,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 85 transitions, 182 flow [2022-11-20 11:59:02,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:59:02,612 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;@359d0695, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:59:02,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 11:59:02,650 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2022-11-20 11:59:02,650 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:59:02,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:02,651 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] [2022-11-20 11:59:02,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1881502097, now seen corresponding path program 1 times [2022-11-20 11:59:02,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:02,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783437299] [2022-11-20 11:59:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:02,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,797 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 11:59:03,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:03,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783437299] [2022-11-20 11:59:03,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783437299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:03,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:03,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:59:03,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164781880] [2022-11-20 11:59:03,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:03,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:59:03,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:59:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:03,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 105 [2022-11-20 11:59:03,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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 11:59:03,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:03,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 105 [2022-11-20 11:59:03,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:04,264 INFO L130 PetriNetUnfolder]: 6/118 cut-off events. [2022-11-20 11:59:04,264 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 11:59:04,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 118 events. 6/118 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 132. Up to 13 conditions per place. [2022-11-20 11:59:04,268 INFO L137 encePairwiseOnDemand]: 98/105 looper letters, 13 selfloop transitions, 2 changer transitions 11/97 dead transitions. [2022-11-20 11:59:04,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 97 transitions, 265 flow [2022-11-20 11:59:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:59:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:59:04,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 830 transitions. [2022-11-20 11:59:04,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783068783068783 [2022-11-20 11:59:04,302 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 830 transitions. [2022-11-20 11:59:04,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 830 transitions. [2022-11-20 11:59:04,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:04,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 830 transitions. [2022-11-20 11:59:04,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.22222222222223) internal successors, (830), 9 states have internal predecessors, (830), 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 11:59:04,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:59:04,325 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:59:04,328 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 182 flow. Second operand 9 states and 830 transitions. [2022-11-20 11:59:04,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 97 transitions, 265 flow [2022-11-20 11:59:04,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:59:04,341 INFO L231 Difference]: Finished difference. Result has 108 places, 83 transitions, 194 flow [2022-11-20 11:59:04,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=194, PETRI_PLACES=108, PETRI_TRANSITIONS=83} [2022-11-20 11:59:04,348 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 11 predicate places. [2022-11-20 11:59:04,349 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 83 transitions, 194 flow [2022-11-20 11:59:04,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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 11:59:04,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:04,350 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] [2022-11-20 11:59:04,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:59:04,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:04,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash 667021328, now seen corresponding path program 1 times [2022-11-20 11:59:04,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:04,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777838166] [2022-11-20 11:59:04,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:04,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:04,722 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 11:59:04,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:04,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777838166] [2022-11-20 11:59:04,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777838166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:04,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:04,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:59:04,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725573765] [2022-11-20 11:59:04,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:04,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:59:04,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:04,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:59:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:04,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 105 [2022-11-20 11:59:04,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 83 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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 11:59:04,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:04,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 105 [2022-11-20 11:59:04,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:05,056 INFO L130 PetriNetUnfolder]: 34/215 cut-off events. [2022-11-20 11:59:05,057 INFO L131 PetriNetUnfolder]: For 48/50 co-relation queries the response was YES. [2022-11-20 11:59:05,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 215 events. 34/215 cut-off events. For 48/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 700 event pairs, 8 based on Foata normal form. 4/213 useless extension candidates. Maximal degree in co-relation 352. Up to 43 conditions per place. [2022-11-20 11:59:05,063 INFO L137 encePairwiseOnDemand]: 98/105 looper letters, 15 selfloop transitions, 3 changer transitions 19/106 dead transitions. [2022-11-20 11:59:05,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 337 flow [2022-11-20 11:59:05,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:59:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:59:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 822 transitions. [2022-11-20 11:59:05,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8698412698412699 [2022-11-20 11:59:05,069 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 822 transitions. [2022-11-20 11:59:05,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 822 transitions. [2022-11-20 11:59:05,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:05,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 822 transitions. [2022-11-20 11:59:05,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.33333333333333) internal successors, (822), 9 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:05,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:59:05,078 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:59:05,078 INFO L175 Difference]: Start difference. First operand has 108 places, 83 transitions, 194 flow. Second operand 9 states and 822 transitions. [2022-11-20 11:59:05,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 337 flow [2022-11-20 11:59:05,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 303 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-11-20 11:59:05,088 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 221 flow [2022-11-20 11:59:05,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=221, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2022-11-20 11:59:05,090 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 11 predicate places. [2022-11-20 11:59:05,090 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 221 flow [2022-11-20 11:59:05,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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 11:59:05,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:05,091 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] [2022-11-20 11:59:05,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:59:05,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:05,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:05,096 INFO L85 PathProgramCache]: Analyzing trace with hash 541793519, now seen corresponding path program 1 times [2022-11-20 11:59:05,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:05,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371673070] [2022-11-20 11:59:05,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:05,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:05,593 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 11:59:05,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:05,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371673070] [2022-11-20 11:59:05,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371673070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:05,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:05,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:59:05,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066115991] [2022-11-20 11:59:05,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:05,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:59:05,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:59:05,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:59:05,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-20 11:59:05,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 221 flow. Second operand has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 11:59:05,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:05,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-20 11:59:05,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:06,351 INFO L130 PetriNetUnfolder]: 468/1223 cut-off events. [2022-11-20 11:59:06,352 INFO L131 PetriNetUnfolder]: For 1440/2020 co-relation queries the response was YES. [2022-11-20 11:59:06,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3095 conditions, 1223 events. 468/1223 cut-off events. For 1440/2020 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7752 event pairs, 41 based on Foata normal form. 36/1212 useless extension candidates. Maximal degree in co-relation 3051. Up to 212 conditions per place. [2022-11-20 11:59:06,373 INFO L137 encePairwiseOnDemand]: 93/105 looper letters, 30 selfloop transitions, 10 changer transitions 59/162 dead transitions. [2022-11-20 11:59:06,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 162 transitions, 800 flow [2022-11-20 11:59:06,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:59:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 11:59:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1236 transitions. [2022-11-20 11:59:06,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8408163265306122 [2022-11-20 11:59:06,380 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1236 transitions. [2022-11-20 11:59:06,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1236 transitions. [2022-11-20 11:59:06,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:06,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1236 transitions. [2022-11-20 11:59:06,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 88.28571428571429) internal successors, (1236), 14 states have internal predecessors, (1236), 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 11:59:06,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 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 11:59:06,393 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 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 11:59:06,393 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 221 flow. Second operand 14 states and 1236 transitions. [2022-11-20 11:59:06,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 162 transitions, 800 flow [2022-11-20 11:59:06,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 773 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-20 11:59:06,410 INFO L231 Difference]: Finished difference. Result has 123 places, 90 transitions, 337 flow [2022-11-20 11:59:06,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=337, PETRI_PLACES=123, PETRI_TRANSITIONS=90} [2022-11-20 11:59:06,414 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 26 predicate places. [2022-11-20 11:59:06,414 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 90 transitions, 337 flow [2022-11-20 11:59:06,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 11:59:06,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:06,416 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] [2022-11-20 11:59:06,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:59:06,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:06,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1986813009, now seen corresponding path program 2 times [2022-11-20 11:59:06,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:06,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325821123] [2022-11-20 11:59:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,790 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 11:59:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:06,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325821123] [2022-11-20 11:59:06,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325821123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:06,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:06,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73093722] [2022-11-20 11:59:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:06,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:06,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:06,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:06,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-20 11:59:06,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 90 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 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 11:59:06,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:06,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-20 11:59:06,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:07,376 INFO L130 PetriNetUnfolder]: 265/874 cut-off events. [2022-11-20 11:59:07,376 INFO L131 PetriNetUnfolder]: For 3683/4624 co-relation queries the response was YES. [2022-11-20 11:59:07,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3159 conditions, 874 events. 265/874 cut-off events. For 3683/4624 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5839 event pairs, 29 based on Foata normal form. 18/870 useless extension candidates. Maximal degree in co-relation 3103. Up to 183 conditions per place. [2022-11-20 11:59:07,393 INFO L137 encePairwiseOnDemand]: 93/105 looper letters, 29 selfloop transitions, 13 changer transitions 43/148 dead transitions. [2022-11-20 11:59:07,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 148 transitions, 1018 flow [2022-11-20 11:59:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:59:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:59:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1128 transitions. [2022-11-20 11:59:07,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8263736263736263 [2022-11-20 11:59:07,400 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1128 transitions. [2022-11-20 11:59:07,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1128 transitions. [2022-11-20 11:59:07,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:07,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1128 transitions. [2022-11-20 11:59:07,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 86.76923076923077) internal successors, (1128), 13 states have internal predecessors, (1128), 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 11:59:07,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:59:07,417 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:59:07,418 INFO L175 Difference]: Start difference. First operand has 123 places, 90 transitions, 337 flow. Second operand 13 states and 1128 transitions. [2022-11-20 11:59:07,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 148 transitions, 1018 flow [2022-11-20 11:59:07,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 148 transitions, 978 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-11-20 11:59:07,437 INFO L231 Difference]: Finished difference. Result has 133 places, 96 transitions, 481 flow [2022-11-20 11:59:07,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=481, PETRI_PLACES=133, PETRI_TRANSITIONS=96} [2022-11-20 11:59:07,442 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 36 predicate places. [2022-11-20 11:59:07,443 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 96 transitions, 481 flow [2022-11-20 11:59:07,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 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 11:59:07,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:07,444 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 11:59:07,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:59:07,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:07,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:07,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1948225966, now seen corresponding path program 1 times [2022-11-20 11:59:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:07,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332991825] [2022-11-20 11:59:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:07,872 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 11:59:07,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:07,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332991825] [2022-11-20 11:59:07,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332991825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:07,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:07,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:07,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535430642] [2022-11-20 11:59:07,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:07,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:07,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:07,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:07,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:07,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-20 11:59:07,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 96 transitions, 481 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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 11:59:07,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:07,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-20 11:59:07,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:08,397 INFO L130 PetriNetUnfolder]: 203/759 cut-off events. [2022-11-20 11:59:08,397 INFO L131 PetriNetUnfolder]: For 5377/5600 co-relation queries the response was YES. [2022-11-20 11:59:08,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 759 events. 203/759 cut-off events. For 5377/5600 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4841 event pairs, 17 based on Foata normal form. 21/765 useless extension candidates. Maximal degree in co-relation 3186. Up to 148 conditions per place. [2022-11-20 11:59:08,408 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 35 selfloop transitions, 15 changer transitions 35/148 dead transitions. [2022-11-20 11:59:08,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 148 transitions, 1228 flow [2022-11-20 11:59:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:59:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:59:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1123 transitions. [2022-11-20 11:59:08,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8227106227106227 [2022-11-20 11:59:08,414 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1123 transitions. [2022-11-20 11:59:08,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1123 transitions. [2022-11-20 11:59:08,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:08,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1123 transitions. [2022-11-20 11:59:08,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 86.38461538461539) internal successors, (1123), 13 states have internal predecessors, (1123), 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 11:59:08,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:59:08,424 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:59:08,424 INFO L175 Difference]: Start difference. First operand has 133 places, 96 transitions, 481 flow. Second operand 13 states and 1123 transitions. [2022-11-20 11:59:08,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 148 transitions, 1228 flow [2022-11-20 11:59:08,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 148 transitions, 1116 flow, removed 54 selfloop flow, removed 4 redundant places. [2022-11-20 11:59:08,448 INFO L231 Difference]: Finished difference. Result has 144 places, 100 transitions, 584 flow [2022-11-20 11:59:08,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=584, PETRI_PLACES=144, PETRI_TRANSITIONS=100} [2022-11-20 11:59:08,450 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 47 predicate places. [2022-11-20 11:59:08,450 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 100 transitions, 584 flow [2022-11-20 11:59:08,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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 11:59:08,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:08,451 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:08,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:59:08,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:08,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:08,453 INFO L85 PathProgramCache]: Analyzing trace with hash -835587538, now seen corresponding path program 1 times [2022-11-20 11:59:08,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:08,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533700336] [2022-11-20 11:59:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:08,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:08,775 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 11:59:08,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:08,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533700336] [2022-11-20 11:59:08,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533700336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:08,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:08,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:59:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709358875] [2022-11-20 11:59:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:08,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:59:08,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:08,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:59:08,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:59:08,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-20 11:59:08,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 100 transitions, 584 flow. Second operand has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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 11:59:08,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:08,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-20 11:59:08,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:09,214 INFO L130 PetriNetUnfolder]: 150/739 cut-off events. [2022-11-20 11:59:09,215 INFO L131 PetriNetUnfolder]: For 6446/6861 co-relation queries the response was YES. [2022-11-20 11:59:09,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3217 conditions, 739 events. 150/739 cut-off events. For 6446/6861 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5029 event pairs, 10 based on Foata normal form. 22/746 useless extension candidates. Maximal degree in co-relation 3159. Up to 111 conditions per place. [2022-11-20 11:59:09,224 INFO L137 encePairwiseOnDemand]: 92/105 looper letters, 31 selfloop transitions, 16 changer transitions 73/183 dead transitions. [2022-11-20 11:59:09,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 183 transitions, 2041 flow [2022-11-20 11:59:09,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:59:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:59:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 963 transitions. [2022-11-20 11:59:09,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8337662337662337 [2022-11-20 11:59:09,228 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 963 transitions. [2022-11-20 11:59:09,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 963 transitions. [2022-11-20 11:59:09,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:09,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 963 transitions. [2022-11-20 11:59:09,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.54545454545455) internal successors, (963), 11 states have internal predecessors, (963), 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 11:59:09,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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 11:59:09,237 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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 11:59:09,237 INFO L175 Difference]: Start difference. First operand has 144 places, 100 transitions, 584 flow. Second operand 11 states and 963 transitions. [2022-11-20 11:59:09,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 183 transitions, 2041 flow [2022-11-20 11:59:09,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 183 transitions, 1935 flow, removed 53 selfloop flow, removed 9 redundant places. [2022-11-20 11:59:09,270 INFO L231 Difference]: Finished difference. Result has 144 places, 99 transitions, 602 flow [2022-11-20 11:59:09,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=602, PETRI_PLACES=144, PETRI_TRANSITIONS=99} [2022-11-20 11:59:09,272 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 47 predicate places. [2022-11-20 11:59:09,272 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 99 transitions, 602 flow [2022-11-20 11:59:09,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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 11:59:09,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:09,273 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:09,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:59:09,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:09,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash -95709312, now seen corresponding path program 1 times [2022-11-20 11:59:09,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:09,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983947377] [2022-11-20 11:59:09,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:09,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,546 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 11:59:09,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:09,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983947377] [2022-11-20 11:59:09,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983947377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:09,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:09,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:09,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017848574] [2022-11-20 11:59:09,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:09,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:09,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:09,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:09,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:09,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-20 11:59:09,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 99 transitions, 602 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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 11:59:09,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:09,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-20 11:59:09,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:09,955 INFO L130 PetriNetUnfolder]: 54/400 cut-off events. [2022-11-20 11:59:09,955 INFO L131 PetriNetUnfolder]: For 4128/4244 co-relation queries the response was YES. [2022-11-20 11:59:09,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 400 events. 54/400 cut-off events. For 4128/4244 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2205 event pairs, 3 based on Foata normal form. 11/407 useless extension candidates. Maximal degree in co-relation 1654. Up to 49 conditions per place. [2022-11-20 11:59:09,960 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 30 selfloop transitions, 12 changer transitions 28/133 dead transitions. [2022-11-20 11:59:09,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 133 transitions, 1266 flow [2022-11-20 11:59:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:59:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:59:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1114 transitions. [2022-11-20 11:59:09,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161172161172161 [2022-11-20 11:59:09,965 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1114 transitions. [2022-11-20 11:59:09,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1114 transitions. [2022-11-20 11:59:09,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:09,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1114 transitions. [2022-11-20 11:59:09,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.6923076923077) internal successors, (1114), 13 states have internal predecessors, (1114), 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 11:59:09,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:59:09,974 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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 11:59:09,975 INFO L175 Difference]: Start difference. First operand has 144 places, 99 transitions, 602 flow. Second operand 13 states and 1114 transitions. [2022-11-20 11:59:09,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 133 transitions, 1266 flow [2022-11-20 11:59:09,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 133 transitions, 1106 flow, removed 56 selfloop flow, removed 6 redundant places. [2022-11-20 11:59:09,999 INFO L231 Difference]: Finished difference. Result has 154 places, 95 transitions, 517 flow [2022-11-20 11:59:10,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=517, PETRI_PLACES=154, PETRI_TRANSITIONS=95} [2022-11-20 11:59:10,001 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 57 predicate places. [2022-11-20 11:59:10,001 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 95 transitions, 517 flow [2022-11-20 11:59:10,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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 11:59:10,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:10,002 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:10,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:59:10,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:10,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:10,004 INFO L85 PathProgramCache]: Analyzing trace with hash -918494459, now seen corresponding path program 1 times [2022-11-20 11:59:10,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:10,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439958444] [2022-11-20 11:59:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:10,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:10,269 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 11:59:10,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:10,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439958444] [2022-11-20 11:59:10,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439958444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:10,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:10,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:59:10,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311521851] [2022-11-20 11:59:10,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:10,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:59:10,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:10,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:59:10,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:10,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-11-20 11:59:10,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 95 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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 11:59:10,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:10,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-11-20 11:59:10,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:11,044 INFO L130 PetriNetUnfolder]: 1068/2372 cut-off events. [2022-11-20 11:59:11,045 INFO L131 PetriNetUnfolder]: For 6147/6214 co-relation queries the response was YES. [2022-11-20 11:59:11,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5767 conditions, 2372 events. 1068/2372 cut-off events. For 6147/6214 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 18166 event pairs, 89 based on Foata normal form. 53/2262 useless extension candidates. Maximal degree in co-relation 5725. Up to 874 conditions per place. [2022-11-20 11:59:11,075 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 29 selfloop transitions, 19 changer transitions 0/128 dead transitions. [2022-11-20 11:59:11,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 128 transitions, 683 flow [2022-11-20 11:59:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:59:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:59:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 824 transitions. [2022-11-20 11:59:11,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8719576719576719 [2022-11-20 11:59:11,080 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 824 transitions. [2022-11-20 11:59:11,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 824 transitions. [2022-11-20 11:59:11,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:11,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 824 transitions. [2022-11-20 11:59:11,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.55555555555556) internal successors, (824), 9 states have internal predecessors, (824), 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 11:59:11,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:59:11,090 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:59:11,090 INFO L175 Difference]: Start difference. First operand has 154 places, 95 transitions, 517 flow. Second operand 9 states and 824 transitions. [2022-11-20 11:59:11,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 128 transitions, 683 flow [2022-11-20 11:59:11,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 598 flow, removed 29 selfloop flow, removed 19 redundant places. [2022-11-20 11:59:11,129 INFO L231 Difference]: Finished difference. Result has 139 places, 112 transitions, 566 flow [2022-11-20 11:59:11,130 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=566, PETRI_PLACES=139, PETRI_TRANSITIONS=112} [2022-11-20 11:59:11,131 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 42 predicate places. [2022-11-20 11:59:11,131 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 112 transitions, 566 flow [2022-11-20 11:59:11,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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 11:59:11,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:11,132 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:11,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:59:11,133 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:11,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2138781757, now seen corresponding path program 1 times [2022-11-20 11:59:11,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:11,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662169375] [2022-11-20 11:59:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:11,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:11,497 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 11:59:11,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:11,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662169375] [2022-11-20 11:59:11,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662169375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:11,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:11,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:11,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997522524] [2022-11-20 11:59:11,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:11,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:11,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:11,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-11-20 11:59:11,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 112 transitions, 566 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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 11:59:11,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:11,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-11-20 11:59:11,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:12,270 INFO L130 PetriNetUnfolder]: 1122/2442 cut-off events. [2022-11-20 11:59:12,270 INFO L131 PetriNetUnfolder]: For 8203/10053 co-relation queries the response was YES. [2022-11-20 11:59:12,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9099 conditions, 2442 events. 1122/2442 cut-off events. For 8203/10053 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 19383 event pairs, 31 based on Foata normal form. 183/2481 useless extension candidates. Maximal degree in co-relation 9067. Up to 1248 conditions per place. [2022-11-20 11:59:12,296 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 32 selfloop transitions, 37 changer transitions 0/149 dead transitions. [2022-11-20 11:59:12,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 149 transitions, 945 flow [2022-11-20 11:59:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:59:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 11:59:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1099 transitions. [2022-11-20 11:59:12,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8722222222222222 [2022-11-20 11:59:12,301 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1099 transitions. [2022-11-20 11:59:12,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1099 transitions. [2022-11-20 11:59:12,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:12,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1099 transitions. [2022-11-20 11:59:12,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.58333333333333) internal successors, (1099), 12 states have internal predecessors, (1099), 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 11:59:12,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 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 11:59:12,312 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 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 11:59:12,312 INFO L175 Difference]: Start difference. First operand has 139 places, 112 transitions, 566 flow. Second operand 12 states and 1099 transitions. [2022-11-20 11:59:12,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 149 transitions, 945 flow [2022-11-20 11:59:12,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 149 transitions, 935 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 11:59:12,332 INFO L231 Difference]: Finished difference. Result has 152 places, 131 transitions, 836 flow [2022-11-20 11:59:12,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=836, PETRI_PLACES=152, PETRI_TRANSITIONS=131} [2022-11-20 11:59:12,334 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 55 predicate places. [2022-11-20 11:59:12,334 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 131 transitions, 836 flow [2022-11-20 11:59:12,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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 11:59:12,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:12,335 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:12,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:59:12,338 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1416793758, now seen corresponding path program 1 times [2022-11-20 11:59:12,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:12,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218312410] [2022-11-20 11:59:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:12,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:12,719 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 11:59:12,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:12,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218312410] [2022-11-20 11:59:12,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218312410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:12,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:12,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:59:12,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405375979] [2022-11-20 11:59:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:12,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:59:12,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:12,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:59:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:59:12,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-11-20 11:59:12,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 131 transitions, 836 flow. Second operand has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 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 11:59:12,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:12,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-11-20 11:59:12,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:13,720 INFO L130 PetriNetUnfolder]: 1081/2329 cut-off events. [2022-11-20 11:59:13,721 INFO L131 PetriNetUnfolder]: For 19312/21541 co-relation queries the response was YES. [2022-11-20 11:59:13,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12337 conditions, 2329 events. 1081/2329 cut-off events. For 19312/21541 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 18887 event pairs, 5 based on Foata normal form. 276/2478 useless extension candidates. Maximal degree in co-relation 12301. Up to 1195 conditions per place. [2022-11-20 11:59:13,753 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 20 selfloop transitions, 57 changer transitions 14/171 dead transitions. [2022-11-20 11:59:13,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 171 transitions, 1436 flow [2022-11-20 11:59:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:59:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:59:13,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1373 transitions. [2022-11-20 11:59:13,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8717460317460317 [2022-11-20 11:59:13,761 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1373 transitions. [2022-11-20 11:59:13,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1373 transitions. [2022-11-20 11:59:13,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:13,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1373 transitions. [2022-11-20 11:59:13,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.53333333333333) internal successors, (1373), 15 states have internal predecessors, (1373), 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 11:59:13,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 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 11:59:13,780 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 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 11:59:13,781 INFO L175 Difference]: Start difference. First operand has 152 places, 131 transitions, 836 flow. Second operand 15 states and 1373 transitions. [2022-11-20 11:59:13,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 171 transitions, 1436 flow [2022-11-20 11:59:13,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 171 transitions, 1327 flow, removed 45 selfloop flow, removed 4 redundant places. [2022-11-20 11:59:13,868 INFO L231 Difference]: Finished difference. Result has 165 places, 150 transitions, 1083 flow [2022-11-20 11:59:13,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1083, PETRI_PLACES=165, PETRI_TRANSITIONS=150} [2022-11-20 11:59:13,872 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 68 predicate places. [2022-11-20 11:59:13,872 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 150 transitions, 1083 flow [2022-11-20 11:59:13,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 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 11:59:13,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:13,873 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:13,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:59:13,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1805402469, now seen corresponding path program 1 times [2022-11-20 11:59:13,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:13,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339144320] [2022-11-20 11:59:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:13,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:14,214 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 11:59:14,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:14,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339144320] [2022-11-20 11:59:14,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339144320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:14,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:14,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:59:14,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967592014] [2022-11-20 11:59:14,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:14,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:59:14,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:14,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:59:14,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:59:14,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-20 11:59:14,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 150 transitions, 1083 flow. Second operand has 8 states, 8 states have (on average 83.375) internal successors, (667), 8 states have internal predecessors, (667), 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 11:59:14,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:14,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-20 11:59:14,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:14,834 INFO L130 PetriNetUnfolder]: 810/2248 cut-off events. [2022-11-20 11:59:14,835 INFO L131 PetriNetUnfolder]: For 17612/18014 co-relation queries the response was YES. [2022-11-20 11:59:14,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9700 conditions, 2248 events. 810/2248 cut-off events. For 17612/18014 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 20383 event pairs, 15 based on Foata normal form. 4/2168 useless extension candidates. Maximal degree in co-relation 9660. Up to 742 conditions per place. [2022-11-20 11:59:14,866 INFO L137 encePairwiseOnDemand]: 94/105 looper letters, 32 selfloop transitions, 13 changer transitions 9/170 dead transitions. [2022-11-20 11:59:14,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 170 transitions, 1313 flow [2022-11-20 11:59:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:59:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:59:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 778 transitions. [2022-11-20 11:59:14,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8232804232804233 [2022-11-20 11:59:14,870 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 778 transitions. [2022-11-20 11:59:14,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 778 transitions. [2022-11-20 11:59:14,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:14,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 778 transitions. [2022-11-20 11:59:14,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.44444444444444) internal successors, (778), 9 states have internal predecessors, (778), 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 11:59:14,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:59:14,877 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:59:14,878 INFO L175 Difference]: Start difference. First operand has 165 places, 150 transitions, 1083 flow. Second operand 9 states and 778 transitions. [2022-11-20 11:59:14,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 170 transitions, 1313 flow [2022-11-20 11:59:15,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 170 transitions, 1052 flow, removed 88 selfloop flow, removed 14 redundant places. [2022-11-20 11:59:15,245 INFO L231 Difference]: Finished difference. Result has 164 places, 149 transitions, 873 flow [2022-11-20 11:59:15,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=873, PETRI_PLACES=164, PETRI_TRANSITIONS=149} [2022-11-20 11:59:15,247 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 67 predicate places. [2022-11-20 11:59:15,247 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 149 transitions, 873 flow [2022-11-20 11:59:15,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.375) internal successors, (667), 8 states have internal predecessors, (667), 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 11:59:15,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:15,248 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:15,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:59:15,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 11:59:15,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:15,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1473816783, now seen corresponding path program 2 times [2022-11-20 11:59:15,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:15,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992294283] [2022-11-20 11:59:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:15,542 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 11:59:15,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:15,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992294283] [2022-11-20 11:59:15,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992294283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:15,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:15,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:59:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424740226] [2022-11-20 11:59:15,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:15,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:59:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:59:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:59:15,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-11-20 11:59:15,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 149 transitions, 873 flow. Second operand has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 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 11:59:15,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:15,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-11-20 11:59:15,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:16,427 INFO L130 PetriNetUnfolder]: 942/2210 cut-off events. [2022-11-20 11:59:16,427 INFO L131 PetriNetUnfolder]: For 4002/5509 co-relation queries the response was YES. [2022-11-20 11:59:16,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7349 conditions, 2210 events. 942/2210 cut-off events. For 4002/5509 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 19614 event pairs, 1 based on Foata normal form. 261/2315 useless extension candidates. Maximal degree in co-relation 7311. Up to 370 conditions per place. [2022-11-20 11:59:16,447 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 0 selfloop transitions, 0 changer transitions 153/153 dead transitions. [2022-11-20 11:59:16,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 153 transitions, 1035 flow [2022-11-20 11:59:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:59:16,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:59:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1618 transitions. [2022-11-20 11:59:16,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8560846560846561 [2022-11-20 11:59:16,452 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1618 transitions. [2022-11-20 11:59:16,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1618 transitions. [2022-11-20 11:59:16,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:16,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1618 transitions. [2022-11-20 11:59:16,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 89.88888888888889) internal successors, (1618), 18 states have internal predecessors, (1618), 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 11:59:16,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 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 11:59:16,467 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 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 11:59:16,467 INFO L175 Difference]: Start difference. First operand has 164 places, 149 transitions, 873 flow. Second operand 18 states and 1618 transitions. [2022-11-20 11:59:16,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 153 transitions, 1035 flow [2022-11-20 11:59:16,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 907 flow, removed 21 selfloop flow, removed 17 redundant places. [2022-11-20 11:59:16,533 INFO L231 Difference]: Finished difference. Result has 152 places, 0 transitions, 0 flow [2022-11-20 11:59:16,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=152, PETRI_TRANSITIONS=0} [2022-11-20 11:59:16,536 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 55 predicate places. [2022-11-20 11:59:16,537 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 0 transitions, 0 flow [2022-11-20 11:59:16,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 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 11:59:16,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-20 11:59:16,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-11-20 11:59:16,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-20 11:59:16,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-20 11:59:16,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-20 11:59:16,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:59:16,543 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:16,548 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:59:16,549 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:59:16,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:59:16 BasicIcfg [2022-11-20 11:59:16,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:59:16,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:59:16,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:59:16,562 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:59:16,563 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:02" (3/4) ... [2022-11-20 11:59:16,567 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:59:16,576 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-20 11:59:16,576 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-20 11:59:16,577 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-20 11:59:16,577 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-20 11:59:16,584 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-20 11:59:16,585 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 11:59:16,585 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:59:16,585 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:59:16,641 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:59:16,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:59:16,642 INFO L158 Benchmark]: Toolchain (without parser) took 15986.21ms. Allocated memory was 167.8MB in the beginning and 400.6MB in the end (delta: 232.8MB). Free memory was 121.4MB in the beginning and 148.0MB in the end (delta: -26.6MB). Peak memory consumption was 207.7MB. Max. memory is 16.1GB. [2022-11-20 11:59:16,643 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 125.8MB. Free memory is still 69.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:59:16,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 793.61ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 101.0MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 11:59:16,644 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.04ms. Allocated memory is still 167.8MB. Free memory was 101.0MB in the beginning and 99.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:59:16,644 INFO L158 Benchmark]: Boogie Preprocessor took 70.98ms. Allocated memory is still 167.8MB. Free memory was 99.0MB in the beginning and 97.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:59:16,645 INFO L158 Benchmark]: RCFGBuilder took 687.42ms. Allocated memory is still 167.8MB. Free memory was 97.4MB in the beginning and 126.9MB in the end (delta: -29.6MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-11-20 11:59:16,645 INFO L158 Benchmark]: TraceAbstraction took 14260.25ms. Allocated memory was 167.8MB in the beginning and 400.6MB in the end (delta: 232.8MB). Free memory was 126.7MB in the beginning and 150.1MB in the end (delta: -23.4MB). Peak memory consumption was 210.4MB. Max. memory is 16.1GB. [2022-11-20 11:59:16,646 INFO L158 Benchmark]: Witness Printer took 80.02ms. Allocated memory is still 400.6MB. Free memory was 150.1MB in the beginning and 148.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:59:16,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 125.8MB. Free memory is still 69.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 793.61ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 101.0MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.04ms. Allocated memory is still 167.8MB. Free memory was 101.0MB in the beginning and 99.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.98ms. Allocated memory is still 167.8MB. Free memory was 99.0MB in the beginning and 97.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 687.42ms. Allocated memory is still 167.8MB. Free memory was 97.4MB in the beginning and 126.9MB in the end (delta: -29.6MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * TraceAbstraction took 14260.25ms. Allocated memory was 167.8MB in the beginning and 400.6MB in the end (delta: 232.8MB). Free memory was 126.7MB in the beginning and 150.1MB in the end (delta: -23.4MB). Peak memory consumption was 210.4MB. Max. memory is 16.1GB. * Witness Printer took 80.02ms. Allocated memory is still 400.6MB. Free memory was 150.1MB in the beginning and 148.0MB 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: 18]: 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 9 procedures, 134 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 701 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 701 mSDsluCounter, 851 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 656 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 923 IncrementalHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 195 mSDtfsCounter, 923 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1083occurred in iteration=10, InterpolantAutomatonStates: 145, 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, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 811 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 799 ConstructedInterpolants, 0 QuantifiedInterpolants, 2921 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:59:16,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d585fe0-76ee-4716-8f4d-d4054a239e2b/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