./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/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_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/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_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/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 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --- 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 11:21:05,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:21:05,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:21:05,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:21:05,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:21:05,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:21:05,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:21:05,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:21:05,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:21:05,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:21:05,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:21:05,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:21:05,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:21:05,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:21:05,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:21:05,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:21:05,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:21:05,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:21:05,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:21:05,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:21:05,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:21:05,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:21:05,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:21:05,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:21:05,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:21:05,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:21:05,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:21:05,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:21:05,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:21:05,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:21:05,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:21:05,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:21:05,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:21:05,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:21:05,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:21:05,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:21:05,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:21:05,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:21:05,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:21:05,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:21:05,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:21:05,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:21:05,994 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:21:05,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:21:05,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:21:05,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:21:05,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:21:05,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:21:05,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:21:05,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:21:05,998 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:21:05,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:21:05,999 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:21:06,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:21:06,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:21:06,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:21:06,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:21:06,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:21:06,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:21:06,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:21:06,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:21:06,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:21:06,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:21:06,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:21:06,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:21:06,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:21:06,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:21:06,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:21:06,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:21:06,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:21:06,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:21:06,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:21:06,005 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:21:06,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:21:06,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:21:06,006 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_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 [2022-11-20 11:21:06,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:21:06,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:21:06,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:21:06,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:21:06,341 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:21:06,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2022-11-20 11:21:09,475 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:21:09,720 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:21:09,720 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2022-11-20 11:21:09,764 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN/data/802dd5e6d/0a7b04c30e9c487caef88669c08b568c/FLAG63a4b3230 [2022-11-20 11:21:09,786 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN/data/802dd5e6d/0a7b04c30e9c487caef88669c08b568c [2022-11-20 11:21:09,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:21:09,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:21:09,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:21:09,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:21:09,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:21:09,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:21:09" (1/1) ... [2022-11-20 11:21:09,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4310a69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:09, skipping insertion in model container [2022-11-20 11:21:09,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:21:09" (1/1) ... [2022-11-20 11:21:09,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:21:09,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:21:10,117 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_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2022-11-20 11:21:10,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:21:10,461 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:21:10,472 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_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2022-11-20 11:21:10,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:21:10,579 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:21:10,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10 WrapperNode [2022-11-20 11:21:10,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:21:10,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:21:10,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:21:10,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:21:10,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,641 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2022-11-20 11:21:10,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:21:10,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:21:10,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:21:10,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:21:10,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,713 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:21:10,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:21:10,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:21:10,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:21:10,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (1/1) ... [2022-11-20 11:21:10,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:21:10,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:21:10,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:21:10,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ac132b-ba8c-4e4a-9ec2-04b5c0618344/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:21:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:21:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:21:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:21:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:21:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:21:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:21:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 11:21:10,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 11:21:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 11:21:10,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 11:21:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 11:21:10,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 11:21:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-20 11:21:10,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-20 11:21:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:21:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:21:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:21:10,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:21:10,834 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 11:21:10,988 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:21:10,990 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:21:11,608 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:21:11,932 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:21:11,933 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:21:11,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:21:11 BoogieIcfgContainer [2022-11-20 11:21:11,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:21:11,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:21:11,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:21:11,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:21:11,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:21:09" (1/3) ... [2022-11-20 11:21:11,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6953e0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:21:11, skipping insertion in model container [2022-11-20 11:21:11,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:21:10" (2/3) ... [2022-11-20 11:21:11,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6953e0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:21:11, skipping insertion in model container [2022-11-20 11:21:11,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:21:11" (3/3) ... [2022-11-20 11:21:11,949 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2022-11-20 11:21:11,958 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:21:11,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:21:11,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:21:11,971 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:21:12,063 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:21:12,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 151 transitions, 322 flow [2022-11-20 11:21:12,245 INFO L130 PetriNetUnfolder]: 2/147 cut-off events. [2022-11-20 11:21:12,246 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:21:12,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 2/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-11-20 11:21:12,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 151 transitions, 322 flow [2022-11-20 11:21:12,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 131 transitions, 274 flow [2022-11-20 11:21:12,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:21:12,277 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;@3ae79b46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:21:12,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 11:21:12,312 INFO L130 PetriNetUnfolder]: 1/130 cut-off events. [2022-11-20 11:21:12,313 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:21:12,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:12,314 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:12,314 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 11:21:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:12,320 INFO L85 PathProgramCache]: Analyzing trace with hash 617156554, now seen corresponding path program 1 times [2022-11-20 11:21:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:12,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952025261] [2022-11-20 11:21:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:13,259 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 11:21:13,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:13,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952025261] [2022-11-20 11:21:13,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952025261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:13,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:13,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:21:13,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041532087] [2022-11-20 11:21:13,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:13,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:21:13,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:13,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:21:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:21:13,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 151 [2022-11-20 11:21:13,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 11:21:13,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:13,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 151 [2022-11-20 11:21:13,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:14,926 INFO L130 PetriNetUnfolder]: 1780/3263 cut-off events. [2022-11-20 11:21:14,927 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-20 11:21:14,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5884 conditions, 3263 events. 1780/3263 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 21148 event pairs, 412 based on Foata normal form. 86/3254 useless extension candidates. Maximal degree in co-relation 5807. Up to 1472 conditions per place. [2022-11-20 11:21:14,960 INFO L137 encePairwiseOnDemand]: 143/151 looper letters, 25 selfloop transitions, 3 changer transitions 49/187 dead transitions. [2022-11-20 11:21:14,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 187 transitions, 543 flow [2022-11-20 11:21:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:21:14,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:21:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1224 transitions. [2022-11-20 11:21:14,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9006622516556292 [2022-11-20 11:21:14,984 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1224 transitions. [2022-11-20 11:21:14,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1224 transitions. [2022-11-20 11:21:14,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:14,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1224 transitions. [2022-11-20 11:21:15,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 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 11:21:15,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 11:21:15,009 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 11:21:15,011 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 274 flow. Second operand 9 states and 1224 transitions. [2022-11-20 11:21:15,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 187 transitions, 543 flow [2022-11-20 11:21:15,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 187 transitions, 538 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:21:15,020 INFO L231 Difference]: Finished difference. Result has 154 places, 132 transitions, 311 flow [2022-11-20 11:21:15,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=154, PETRI_TRANSITIONS=132} [2022-11-20 11:21:15,025 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 11 predicate places. [2022-11-20 11:21:15,026 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 132 transitions, 311 flow [2022-11-20 11:21:15,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 11:21:15,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:15,027 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:15,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:21:15,028 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 11:21:15,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:15,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1919652053, now seen corresponding path program 1 times [2022-11-20 11:21:15,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:15,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125091838] [2022-11-20 11:21:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:15,533 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 11:21:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:15,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125091838] [2022-11-20 11:21:15,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125091838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:15,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:15,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:21:15,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052205539] [2022-11-20 11:21:15,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:15,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:21:15,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:15,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:21:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:21:15,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 151 [2022-11-20 11:21:15,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 132 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:21:15,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:15,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 151 [2022-11-20 11:21:15,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:16,617 INFO L130 PetriNetUnfolder]: 1158/2314 cut-off events. [2022-11-20 11:21:16,618 INFO L131 PetriNetUnfolder]: For 1549/1559 co-relation queries the response was YES. [2022-11-20 11:21:16,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5154 conditions, 2314 events. 1158/2314 cut-off events. For 1549/1559 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14803 event pairs, 593 based on Foata normal form. 60/2282 useless extension candidates. Maximal degree in co-relation 5072. Up to 801 conditions per place. [2022-11-20 11:21:16,640 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 24 selfloop transitions, 2 changer transitions 37/177 dead transitions. [2022-11-20 11:21:16,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 177 transitions, 551 flow [2022-11-20 11:21:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:21:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:21:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1226 transitions. [2022-11-20 11:21:16,646 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9021339220014717 [2022-11-20 11:21:16,646 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1226 transitions. [2022-11-20 11:21:16,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1226 transitions. [2022-11-20 11:21:16,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:16,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1226 transitions. [2022-11-20 11:21:16,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.22222222222223) internal successors, (1226), 9 states have internal predecessors, (1226), 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 11:21:16,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 11:21:16,654 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 11:21:16,655 INFO L175 Difference]: Start difference. First operand has 154 places, 132 transitions, 311 flow. Second operand 9 states and 1226 transitions. [2022-11-20 11:21:16,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 177 transitions, 551 flow [2022-11-20 11:21:16,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 177 transitions, 534 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-20 11:21:16,676 INFO L231 Difference]: Finished difference. Result has 159 places, 132 transitions, 322 flow [2022-11-20 11:21:16,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=322, PETRI_PLACES=159, PETRI_TRANSITIONS=132} [2022-11-20 11:21:16,678 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 16 predicate places. [2022-11-20 11:21:16,679 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 132 transitions, 322 flow [2022-11-20 11:21:16,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:21:16,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:16,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:16,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:21:16,681 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 11:21:16,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1984439242, now seen corresponding path program 1 times [2022-11-20 11:21:16,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:16,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288275926] [2022-11-20 11:21:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:16,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:17,186 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 11:21:17,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:17,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288275926] [2022-11-20 11:21:17,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288275926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:17,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:17,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:21:17,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612343908] [2022-11-20 11:21:17,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:17,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:21:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:21:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:21:17,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 151 [2022-11-20 11:21:17,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 132 transitions, 322 flow. Second operand has 7 states, 7 states have (on average 128.14285714285714) internal successors, (897), 7 states have internal predecessors, (897), 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 11:21:17,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:17,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 151 [2022-11-20 11:21:17,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:18,328 INFO L130 PetriNetUnfolder]: 1340/2573 cut-off events. [2022-11-20 11:21:18,329 INFO L131 PetriNetUnfolder]: For 2908/2908 co-relation queries the response was YES. [2022-11-20 11:21:18,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6457 conditions, 2573 events. 1340/2573 cut-off events. For 2908/2908 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16617 event pairs, 182 based on Foata normal form. 40/2506 useless extension candidates. Maximal degree in co-relation 6369. Up to 949 conditions per place. [2022-11-20 11:21:18,354 INFO L137 encePairwiseOnDemand]: 142/151 looper letters, 30 selfloop transitions, 5 changer transitions 28/172 dead transitions. [2022-11-20 11:21:18,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 172 transitions, 615 flow [2022-11-20 11:21:18,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:21:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:21:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2022-11-20 11:21:18,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8949858088930936 [2022-11-20 11:21:18,361 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2022-11-20 11:21:18,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2022-11-20 11:21:18,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:18,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2022-11-20 11:21:18,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 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 11:21:18,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 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 11:21:18,368 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 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 11:21:18,368 INFO L175 Difference]: Start difference. First operand has 159 places, 132 transitions, 322 flow. Second operand 7 states and 946 transitions. [2022-11-20 11:21:18,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 172 transitions, 615 flow [2022-11-20 11:21:18,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 172 transitions, 589 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-11-20 11:21:18,387 INFO L231 Difference]: Finished difference. Result has 155 places, 132 transitions, 329 flow [2022-11-20 11:21:18,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=155, PETRI_TRANSITIONS=132} [2022-11-20 11:21:18,388 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 12 predicate places. [2022-11-20 11:21:18,388 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 132 transitions, 329 flow [2022-11-20 11:21:18,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.14285714285714) internal successors, (897), 7 states have internal predecessors, (897), 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 11:21:18,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:18,389 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:18,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:21:18,390 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 11:21:18,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:18,390 INFO L85 PathProgramCache]: Analyzing trace with hash -869707178, now seen corresponding path program 2 times [2022-11-20 11:21:18,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:18,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878703185] [2022-11-20 11:21:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:18,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:18,852 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 11:21:18,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:18,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878703185] [2022-11-20 11:21:18,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878703185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:18,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:18,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:21:18,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044016067] [2022-11-20 11:21:18,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:21:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:21:18,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:21:18,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 151 [2022-11-20 11:21:18,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 132 transitions, 329 flow. Second operand has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 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 11:21:18,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:18,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 151 [2022-11-20 11:21:18,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:19,646 INFO L130 PetriNetUnfolder]: 679/1478 cut-off events. [2022-11-20 11:21:19,646 INFO L131 PetriNetUnfolder]: For 1199/1222 co-relation queries the response was YES. [2022-11-20 11:21:19,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 1478 events. 679/1478 cut-off events. For 1199/1222 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8912 event pairs, 251 based on Foata normal form. 32/1445 useless extension candidates. Maximal degree in co-relation 3252. Up to 557 conditions per place. [2022-11-20 11:21:19,662 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 20 selfloop transitions, 3 changer transitions 31/168 dead transitions. [2022-11-20 11:21:19,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 168 transitions, 533 flow [2022-11-20 11:21:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:21:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:21:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1346 transitions. [2022-11-20 11:21:19,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8913907284768212 [2022-11-20 11:21:19,672 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1346 transitions. [2022-11-20 11:21:19,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1346 transitions. [2022-11-20 11:21:19,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:19,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1346 transitions. [2022-11-20 11:21:19,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.6) internal successors, (1346), 10 states have internal predecessors, (1346), 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 11:21:19,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 11:21:19,685 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 11:21:19,685 INFO L175 Difference]: Start difference. First operand has 155 places, 132 transitions, 329 flow. Second operand 10 states and 1346 transitions. [2022-11-20 11:21:19,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 168 transitions, 533 flow [2022-11-20 11:21:19,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 168 transitions, 505 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-20 11:21:19,699 INFO L231 Difference]: Finished difference. Result has 162 places, 132 transitions, 333 flow [2022-11-20 11:21:19,700 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=333, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-11-20 11:21:19,702 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2022-11-20 11:21:19,702 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 333 flow [2022-11-20 11:21:19,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 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 11:21:19,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:19,703 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:19,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:21:19,704 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 11:21:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1075828264, now seen corresponding path program 1 times [2022-11-20 11:21:19,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:19,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135911802] [2022-11-20 11:21:19,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:19,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:20,105 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 11:21:20,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:20,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135911802] [2022-11-20 11:21:20,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135911802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:20,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:20,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:21:20,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76470300] [2022-11-20 11:21:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:20,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:21:20,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:20,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:21:20,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:21:20,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 151 [2022-11-20 11:21:20,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 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 11:21:20,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:20,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 151 [2022-11-20 11:21:20,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:21,290 INFO L130 PetriNetUnfolder]: 1084/2237 cut-off events. [2022-11-20 11:21:21,290 INFO L131 PetriNetUnfolder]: For 2226/2234 co-relation queries the response was YES. [2022-11-20 11:21:21,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 2237 events. 1084/2237 cut-off events. For 2226/2234 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14665 event pairs, 398 based on Foata normal form. 40/2194 useless extension candidates. Maximal degree in co-relation 5219. Up to 656 conditions per place. [2022-11-20 11:21:21,309 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 30 selfloop transitions, 3 changer transitions 34/177 dead transitions. [2022-11-20 11:21:21,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 177 transitions, 633 flow [2022-11-20 11:21:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:21:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:21:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1211 transitions. [2022-11-20 11:21:21,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8910963944076526 [2022-11-20 11:21:21,313 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1211 transitions. [2022-11-20 11:21:21,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1211 transitions. [2022-11-20 11:21:21,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:21,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1211 transitions. [2022-11-20 11:21:21,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.55555555555554) internal successors, (1211), 9 states have internal predecessors, (1211), 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 11:21:21,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 11:21:21,321 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 11:21:21,321 INFO L175 Difference]: Start difference. First operand has 162 places, 132 transitions, 333 flow. Second operand 9 states and 1211 transitions. [2022-11-20 11:21:21,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 177 transitions, 633 flow [2022-11-20 11:21:21,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 177 transitions, 579 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-11-20 11:21:21,336 INFO L231 Difference]: Finished difference. Result has 162 places, 132 transitions, 336 flow [2022-11-20 11:21:21,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=336, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-11-20 11:21:21,337 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2022-11-20 11:21:21,338 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 336 flow [2022-11-20 11:21:21,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 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 11:21:21,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:21,339 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:21,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:21:21,339 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 11:21:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1681148521, now seen corresponding path program 1 times [2022-11-20 11:21:21,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:21,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777733814] [2022-11-20 11:21:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:21,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:21,744 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 11:21:21,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:21,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777733814] [2022-11-20 11:21:21,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777733814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:21,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:21,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:21:21,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790363566] [2022-11-20 11:21:21,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:21,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:21:21,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:21:21,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:21:21,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 151 [2022-11-20 11:21:21,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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 11:21:21,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:21,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 151 [2022-11-20 11:21:21,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:24,290 INFO L130 PetriNetUnfolder]: 5684/9844 cut-off events. [2022-11-20 11:21:24,290 INFO L131 PetriNetUnfolder]: For 2706/2750 co-relation queries the response was YES. [2022-11-20 11:21:24,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19969 conditions, 9844 events. 5684/9844 cut-off events. For 2706/2750 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 73653 event pairs, 245 based on Foata normal form. 0/9557 useless extension candidates. Maximal degree in co-relation 19880. Up to 3567 conditions per place. [2022-11-20 11:21:24,395 INFO L137 encePairwiseOnDemand]: 140/151 looper letters, 35 selfloop transitions, 7 changer transitions 55/206 dead transitions. [2022-11-20 11:21:24,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 206 transitions, 689 flow [2022-11-20 11:21:24,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:21:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:21:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1349 transitions. [2022-11-20 11:21:24,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8933774834437086 [2022-11-20 11:21:24,401 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1349 transitions. [2022-11-20 11:21:24,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1349 transitions. [2022-11-20 11:21:24,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:24,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1349 transitions. [2022-11-20 11:21:24,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 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 11:21:24,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 11:21:24,414 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 11:21:24,414 INFO L175 Difference]: Start difference. First operand has 162 places, 132 transitions, 336 flow. Second operand 10 states and 1349 transitions. [2022-11-20 11:21:24,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 206 transitions, 689 flow [2022-11-20 11:21:24,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 206 transitions, 668 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-20 11:21:24,448 INFO L231 Difference]: Finished difference. Result has 164 places, 135 transitions, 381 flow [2022-11-20 11:21:24,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2022-11-20 11:21:24,452 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 21 predicate places. [2022-11-20 11:21:24,452 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 381 flow [2022-11-20 11:21:24,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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 11:21:24,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:24,453 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:24,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:21:24,454 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 11:21:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash -859869882, now seen corresponding path program 1 times [2022-11-20 11:21:24,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:24,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692258983] [2022-11-20 11:21:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:24,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:26,815 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 11:21:26,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:26,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692258983] [2022-11-20 11:21:26,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692258983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:26,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:26,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:21:26,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653664090] [2022-11-20 11:21:26,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:26,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:21:26,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:26,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:21:26,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:21:26,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 151 [2022-11-20 11:21:26,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 381 flow. Second operand has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 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 11:21:26,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:26,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 151 [2022-11-20 11:21:26,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:29,247 INFO L130 PetriNetUnfolder]: 3705/9329 cut-off events. [2022-11-20 11:21:29,248 INFO L131 PetriNetUnfolder]: For 8467/8988 co-relation queries the response was YES. [2022-11-20 11:21:29,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23388 conditions, 9329 events. 3705/9329 cut-off events. For 8467/8988 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 93441 event pairs, 1546 based on Foata normal form. 87/8869 useless extension candidates. Maximal degree in co-relation 23285. Up to 2292 conditions per place. [2022-11-20 11:21:29,544 INFO L137 encePairwiseOnDemand]: 136/151 looper letters, 54 selfloop transitions, 28 changer transitions 0/184 dead transitions. [2022-11-20 11:21:29,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 184 transitions, 676 flow [2022-11-20 11:21:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:21:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:21:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1794 transitions. [2022-11-20 11:21:29,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7920529801324503 [2022-11-20 11:21:29,557 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1794 transitions. [2022-11-20 11:21:29,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1794 transitions. [2022-11-20 11:21:29,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:29,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1794 transitions. [2022-11-20 11:21:29,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 119.6) internal successors, (1794), 15 states have internal predecessors, (1794), 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 11:21:29,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 151.0) internal successors, (2416), 16 states have internal predecessors, (2416), 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 11:21:29,569 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 151.0) internal successors, (2416), 16 states have internal predecessors, (2416), 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 11:21:29,569 INFO L175 Difference]: Start difference. First operand has 164 places, 135 transitions, 381 flow. Second operand 15 states and 1794 transitions. [2022-11-20 11:21:29,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 184 transitions, 676 flow [2022-11-20 11:21:29,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 184 transitions, 661 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 11:21:29,600 INFO L231 Difference]: Finished difference. Result has 175 places, 166 transitions, 581 flow [2022-11-20 11:21:29,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=581, PETRI_PLACES=175, PETRI_TRANSITIONS=166} [2022-11-20 11:21:29,601 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 32 predicate places. [2022-11-20 11:21:29,601 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 166 transitions, 581 flow [2022-11-20 11:21:29,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 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 11:21:29,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:29,603 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:29,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:21:29,603 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 11:21:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1620134536, now seen corresponding path program 2 times [2022-11-20 11:21:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:29,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729678807] [2022-11-20 11:21:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:32,040 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 11:21:32,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:32,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729678807] [2022-11-20 11:21:32,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729678807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:32,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:32,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:21:32,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098444001] [2022-11-20 11:21:32,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:32,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:21:32,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:32,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:21:32,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:21:32,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 151 [2022-11-20 11:21:32,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 166 transitions, 581 flow. Second operand has 11 states, 11 states have (on average 118.45454545454545) internal successors, (1303), 11 states have internal predecessors, (1303), 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 11:21:32,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:32,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 151 [2022-11-20 11:21:32,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:36,256 INFO L130 PetriNetUnfolder]: 5486/13516 cut-off events. [2022-11-20 11:21:36,257 INFO L131 PetriNetUnfolder]: For 22104/23457 co-relation queries the response was YES. [2022-11-20 11:21:36,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39529 conditions, 13516 events. 5486/13516 cut-off events. For 22104/23457 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 144352 event pairs, 2262 based on Foata normal form. 133/12637 useless extension candidates. Maximal degree in co-relation 39419. Up to 4496 conditions per place. [2022-11-20 11:21:36,408 INFO L137 encePairwiseOnDemand]: 136/151 looper letters, 100 selfloop transitions, 72 changer transitions 0/276 dead transitions. [2022-11-20 11:21:36,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 276 transitions, 1482 flow [2022-11-20 11:21:36,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:21:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 11:21:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2088 transitions. [2022-11-20 11:21:36,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8134008570315543 [2022-11-20 11:21:36,414 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2088 transitions. [2022-11-20 11:21:36,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2088 transitions. [2022-11-20 11:21:36,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:36,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2088 transitions. [2022-11-20 11:21:36,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 122.82352941176471) internal successors, (2088), 17 states have internal predecessors, (2088), 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 11:21:36,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 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 11:21:36,427 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 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 11:21:36,427 INFO L175 Difference]: Start difference. First operand has 175 places, 166 transitions, 581 flow. Second operand 17 states and 2088 transitions. [2022-11-20 11:21:36,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 276 transitions, 1482 flow [2022-11-20 11:21:36,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 276 transitions, 1465 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-20 11:21:36,537 INFO L231 Difference]: Finished difference. Result has 198 places, 245 transitions, 1299 flow [2022-11-20 11:21:36,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1299, PETRI_PLACES=198, PETRI_TRANSITIONS=245} [2022-11-20 11:21:36,539 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 55 predicate places. [2022-11-20 11:21:36,539 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 245 transitions, 1299 flow [2022-11-20 11:21:36,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.45454545454545) internal successors, (1303), 11 states have internal predecessors, (1303), 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 11:21:36,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:36,540 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:36,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:21:36,540 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 11:21:36,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash 358969096, now seen corresponding path program 3 times [2022-11-20 11:21:36,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:36,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110052344] [2022-11-20 11:21:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:36,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:39,794 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 11:21:39,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:39,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110052344] [2022-11-20 11:21:39,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110052344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:39,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:39,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:21:39,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602655576] [2022-11-20 11:21:39,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:39,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:21:39,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:39,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:21:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:21:39,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 151 [2022-11-20 11:21:39,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 245 transitions, 1299 flow. Second operand has 21 states, 21 states have (on average 96.9047619047619) internal successors, (2035), 21 states have internal predecessors, (2035), 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 11:21:39,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:39,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 151 [2022-11-20 11:21:39,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:44,570 INFO L130 PetriNetUnfolder]: 5730/14228 cut-off events. [2022-11-20 11:21:44,571 INFO L131 PetriNetUnfolder]: For 45955/48009 co-relation queries the response was YES. [2022-11-20 11:21:44,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50762 conditions, 14228 events. 5730/14228 cut-off events. For 45955/48009 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 152867 event pairs, 2678 based on Foata normal form. 37/13276 useless extension candidates. Maximal degree in co-relation 50631. Up to 5997 conditions per place. [2022-11-20 11:21:44,798 INFO L137 encePairwiseOnDemand]: 129/151 looper letters, 155 selfloop transitions, 42 changer transitions 34/322 dead transitions. [2022-11-20 11:21:44,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 322 transitions, 2302 flow [2022-11-20 11:21:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 11:21:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-20 11:21:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2587 transitions. [2022-11-20 11:21:44,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6589403973509934 [2022-11-20 11:21:44,807 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2587 transitions. [2022-11-20 11:21:44,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2587 transitions. [2022-11-20 11:21:44,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:44,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2587 transitions. [2022-11-20 11:21:44,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 99.5) internal successors, (2587), 26 states have internal predecessors, (2587), 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 11:21:44,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 151.0) internal successors, (4077), 27 states have internal predecessors, (4077), 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 11:21:44,826 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 151.0) internal successors, (4077), 27 states have internal predecessors, (4077), 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 11:21:44,827 INFO L175 Difference]: Start difference. First operand has 198 places, 245 transitions, 1299 flow. Second operand 26 states and 2587 transitions. [2022-11-20 11:21:44,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 322 transitions, 2302 flow [2022-11-20 11:21:45,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 322 transitions, 2255 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-11-20 11:21:45,292 INFO L231 Difference]: Finished difference. Result has 232 places, 277 transitions, 1646 flow [2022-11-20 11:21:45,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1646, PETRI_PLACES=232, PETRI_TRANSITIONS=277} [2022-11-20 11:21:45,293 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 89 predicate places. [2022-11-20 11:21:45,294 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 277 transitions, 1646 flow [2022-11-20 11:21:45,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 96.9047619047619) internal successors, (2035), 21 states have internal predecessors, (2035), 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 11:21:45,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:45,295 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:45,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:21:45,296 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 11:21:45,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:45,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1653489144, now seen corresponding path program 4 times [2022-11-20 11:21:45,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:45,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009987500] [2022-11-20 11:21:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:45,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:49,016 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 11:21:49,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:49,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009987500] [2022-11-20 11:21:49,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009987500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:49,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:49,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:21:49,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397013826] [2022-11-20 11:21:49,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:49,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:21:49,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:49,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:21:49,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:21:49,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 151 [2022-11-20 11:21:49,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 277 transitions, 1646 flow. Second operand has 20 states, 20 states have (on average 99.85) internal successors, (1997), 20 states have internal predecessors, (1997), 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 11:21:49,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:49,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 151 [2022-11-20 11:21:49,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:55,240 INFO L130 PetriNetUnfolder]: 5868/14498 cut-off events. [2022-11-20 11:21:55,240 INFO L131 PetriNetUnfolder]: For 68759/70940 co-relation queries the response was YES. [2022-11-20 11:21:55,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56649 conditions, 14498 events. 5868/14498 cut-off events. For 68759/70940 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 155208 event pairs, 2192 based on Foata normal form. 51/13532 useless extension candidates. Maximal degree in co-relation 56502. Up to 5965 conditions per place. [2022-11-20 11:21:55,568 INFO L137 encePairwiseOnDemand]: 128/151 looper letters, 167 selfloop transitions, 83 changer transitions 56/400 dead transitions. [2022-11-20 11:21:55,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 400 transitions, 3431 flow [2022-11-20 11:21:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:21:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:21:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3499 transitions. [2022-11-20 11:21:55,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6815348656018699 [2022-11-20 11:21:55,577 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3499 transitions. [2022-11-20 11:21:55,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3499 transitions. [2022-11-20 11:21:55,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:55,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3499 transitions. [2022-11-20 11:21:55,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 102.91176470588235) internal successors, (3499), 34 states have internal predecessors, (3499), 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 11:21:55,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 151.0) internal successors, (5285), 35 states have internal predecessors, (5285), 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 11:21:55,600 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 151.0) internal successors, (5285), 35 states have internal predecessors, (5285), 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 11:21:55,600 INFO L175 Difference]: Start difference. First operand has 232 places, 277 transitions, 1646 flow. Second operand 34 states and 3499 transitions. [2022-11-20 11:21:55,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 400 transitions, 3431 flow [2022-11-20 11:21:55,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 400 transitions, 3321 flow, removed 46 selfloop flow, removed 12 redundant places. [2022-11-20 11:21:55,993 INFO L231 Difference]: Finished difference. Result has 264 places, 319 transitions, 2269 flow [2022-11-20 11:21:55,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2269, PETRI_PLACES=264, PETRI_TRANSITIONS=319} [2022-11-20 11:21:55,994 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 121 predicate places. [2022-11-20 11:21:55,994 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 319 transitions, 2269 flow [2022-11-20 11:21:55,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 99.85) internal successors, (1997), 20 states have internal predecessors, (1997), 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 11:21:55,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:55,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:55,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:21:55,996 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 11:21:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash 291962920, now seen corresponding path program 1 times [2022-11-20 11:21:55,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:55,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720281025] [2022-11-20 11:21:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:55,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:56,399 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 11:21:56,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:56,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720281025] [2022-11-20 11:21:56,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720281025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:56,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:56,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:21:56,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077827530] [2022-11-20 11:21:56,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:56,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:21:56,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:21:56,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:21:56,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 151 [2022-11-20 11:21:56,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 319 transitions, 2269 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 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 11:21:56,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:56,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 151 [2022-11-20 11:21:56,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:01,759 INFO L130 PetriNetUnfolder]: 8903/17865 cut-off events. [2022-11-20 11:22:01,760 INFO L131 PetriNetUnfolder]: For 93734/95122 co-relation queries the response was YES. [2022-11-20 11:22:01,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76458 conditions, 17865 events. 8903/17865 cut-off events. For 93734/95122 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 162122 event pairs, 202 based on Foata normal form. 624/18202 useless extension candidates. Maximal degree in co-relation 76317. Up to 5530 conditions per place. [2022-11-20 11:22:02,032 INFO L137 encePairwiseOnDemand]: 141/151 looper letters, 236 selfloop transitions, 21 changer transitions 145/560 dead transitions. [2022-11-20 11:22:02,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 560 transitions, 5314 flow [2022-11-20 11:22:02,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:22:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:22:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2022-11-20 11:22:02,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8920529801324504 [2022-11-20 11:22:02,040 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2022-11-20 11:22:02,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2022-11-20 11:22:02,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:02,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2022-11-20 11:22:02,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 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 11:22:02,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 11:22:02,047 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 11:22:02,047 INFO L175 Difference]: Start difference. First operand has 264 places, 319 transitions, 2269 flow. Second operand 10 states and 1347 transitions. [2022-11-20 11:22:02,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 560 transitions, 5314 flow [2022-11-20 11:22:02,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 560 transitions, 5028 flow, removed 111 selfloop flow, removed 23 redundant places. [2022-11-20 11:22:02,341 INFO L231 Difference]: Finished difference. Result has 245 places, 256 transitions, 1712 flow [2022-11-20 11:22:02,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1712, PETRI_PLACES=245, PETRI_TRANSITIONS=256} [2022-11-20 11:22:02,342 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 102 predicate places. [2022-11-20 11:22:02,342 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 256 transitions, 1712 flow [2022-11-20 11:22:02,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 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 11:22:02,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:02,343 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:02,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:22:02,343 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 11:22:02,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:02,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1554794887, now seen corresponding path program 1 times [2022-11-20 11:22:02,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:02,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840360025] [2022-11-20 11:22:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:02,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:05,235 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 11:22:05,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:05,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840360025] [2022-11-20 11:22:05,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840360025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:05,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:05,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 11:22:05,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158416653] [2022-11-20 11:22:05,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:05,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:22:05,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:05,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:22:05,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:22:05,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 151 [2022-11-20 11:22:05,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 256 transitions, 1712 flow. Second operand has 17 states, 17 states have (on average 112.0) internal successors, (1904), 17 states have internal predecessors, (1904), 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 11:22:05,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:05,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 151 [2022-11-20 11:22:05,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:09,435 INFO L130 PetriNetUnfolder]: 4543/13224 cut-off events. [2022-11-20 11:22:09,435 INFO L131 PetriNetUnfolder]: For 91431/96730 co-relation queries the response was YES. [2022-11-20 11:22:09,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58701 conditions, 13224 events. 4543/13224 cut-off events. For 91431/96730 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 154384 event pairs, 864 based on Foata normal form. 345/12998 useless extension candidates. Maximal degree in co-relation 58580. Up to 4385 conditions per place. [2022-11-20 11:22:09,640 INFO L137 encePairwiseOnDemand]: 133/151 looper letters, 115 selfloop transitions, 87 changer transitions 43/363 dead transitions. [2022-11-20 11:22:09,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 363 transitions, 3430 flow [2022-11-20 11:22:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:22:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:22:09,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2536 transitions. [2022-11-20 11:22:09,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7633955448524985 [2022-11-20 11:22:09,645 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2536 transitions. [2022-11-20 11:22:09,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2536 transitions. [2022-11-20 11:22:09,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:09,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2536 transitions. [2022-11-20 11:22:09,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 115.27272727272727) internal successors, (2536), 22 states have internal predecessors, (2536), 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 11:22:09,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 151.0) internal successors, (3473), 23 states have internal predecessors, (3473), 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 11:22:09,656 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 151.0) internal successors, (3473), 23 states have internal predecessors, (3473), 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 11:22:09,656 INFO L175 Difference]: Start difference. First operand has 245 places, 256 transitions, 1712 flow. Second operand 22 states and 2536 transitions. [2022-11-20 11:22:09,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 363 transitions, 3430 flow [2022-11-20 11:22:10,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 363 transitions, 3179 flow, removed 122 selfloop flow, removed 17 redundant places. [2022-11-20 11:22:10,604 INFO L231 Difference]: Finished difference. Result has 246 places, 291 transitions, 2402 flow [2022-11-20 11:22:10,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2402, PETRI_PLACES=246, PETRI_TRANSITIONS=291} [2022-11-20 11:22:10,605 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 103 predicate places. [2022-11-20 11:22:10,605 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 291 transitions, 2402 flow [2022-11-20 11:22:10,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 112.0) internal successors, (1904), 17 states have internal predecessors, (1904), 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 11:22:10,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:10,606 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:10,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:22:10,607 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 11:22:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash 497731525, now seen corresponding path program 2 times [2022-11-20 11:22:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:10,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919503011] [2022-11-20 11:22:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:14,135 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 11:22:14,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:14,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919503011] [2022-11-20 11:22:14,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919503011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:14,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:14,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-20 11:22:14,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233946817] [2022-11-20 11:22:14,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:14,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:22:14,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:14,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:22:14,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:22:14,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 151 [2022-11-20 11:22:14,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 291 transitions, 2402 flow. Second operand has 23 states, 23 states have (on average 95.82608695652173) internal successors, (2204), 23 states have internal predecessors, (2204), 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 11:22:14,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:14,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 151 [2022-11-20 11:22:14,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:19,128 INFO L130 PetriNetUnfolder]: 4644/13648 cut-off events. [2022-11-20 11:22:19,128 INFO L131 PetriNetUnfolder]: For 89423/90713 co-relation queries the response was YES. [2022-11-20 11:22:19,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57168 conditions, 13648 events. 4644/13648 cut-off events. For 89423/90713 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 160339 event pairs, 996 based on Foata normal form. 197/13229 useless extension candidates. Maximal degree in co-relation 57042. Up to 3245 conditions per place. [2022-11-20 11:22:19,304 INFO L137 encePairwiseOnDemand]: 127/151 looper letters, 139 selfloop transitions, 88 changer transitions 37/369 dead transitions. [2022-11-20 11:22:19,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 369 transitions, 3943 flow [2022-11-20 11:22:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:22:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:22:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2949 transitions. [2022-11-20 11:22:19,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6509933774834437 [2022-11-20 11:22:19,309 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2949 transitions. [2022-11-20 11:22:19,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2949 transitions. [2022-11-20 11:22:19,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:19,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2949 transitions. [2022-11-20 11:22:19,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 98.3) internal successors, (2949), 30 states have internal predecessors, (2949), 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 11:22:19,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 151.0) internal successors, (4681), 31 states have internal predecessors, (4681), 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 11:22:19,326 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 151.0) internal successors, (4681), 31 states have internal predecessors, (4681), 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 11:22:19,326 INFO L175 Difference]: Start difference. First operand has 246 places, 291 transitions, 2402 flow. Second operand 30 states and 2949 transitions. [2022-11-20 11:22:19,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 369 transitions, 3943 flow [2022-11-20 11:22:20,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 369 transitions, 3792 flow, removed 68 selfloop flow, removed 9 redundant places. [2022-11-20 11:22:20,197 INFO L231 Difference]: Finished difference. Result has 276 places, 323 transitions, 2913 flow [2022-11-20 11:22:20,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2913, PETRI_PLACES=276, PETRI_TRANSITIONS=323} [2022-11-20 11:22:20,198 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 133 predicate places. [2022-11-20 11:22:20,199 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 323 transitions, 2913 flow [2022-11-20 11:22:20,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 95.82608695652173) internal successors, (2204), 23 states have internal predecessors, (2204), 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 11:22:20,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:20,200 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:20,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:22:20,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 11:22:20,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:20,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1894544483, now seen corresponding path program 3 times [2022-11-20 11:22:20,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:20,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843648752] [2022-11-20 11:22:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:20,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:22,938 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 11:22:22,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:22,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843648752] [2022-11-20 11:22:22,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843648752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:22,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:22,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 11:22:22,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491750216] [2022-11-20 11:22:22,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:22,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:22:22,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:22,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:22:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:22:22,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 151 [2022-11-20 11:22:22,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 323 transitions, 2913 flow. Second operand has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 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 11:22:22,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:22,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 151 [2022-11-20 11:22:22,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:27,227 INFO L130 PetriNetUnfolder]: 5589/16399 cut-off events. [2022-11-20 11:22:27,227 INFO L131 PetriNetUnfolder]: For 105286/106837 co-relation queries the response was YES. [2022-11-20 11:22:27,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67400 conditions, 16399 events. 5589/16399 cut-off events. For 105286/106837 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 199906 event pairs, 1193 based on Foata normal form. 250/15883 useless extension candidates. Maximal degree in co-relation 67262. Up to 3860 conditions per place. [2022-11-20 11:22:27,502 INFO L137 encePairwiseOnDemand]: 136/151 looper letters, 144 selfloop transitions, 78 changer transitions 55/397 dead transitions. [2022-11-20 11:22:27,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 397 transitions, 4465 flow [2022-11-20 11:22:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:22:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 11:22:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1984 transitions. [2022-11-20 11:22:27,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7728866380989482 [2022-11-20 11:22:27,507 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1984 transitions. [2022-11-20 11:22:27,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1984 transitions. [2022-11-20 11:22:27,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:27,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1984 transitions. [2022-11-20 11:22:27,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 116.70588235294117) internal successors, (1984), 17 states have internal predecessors, (1984), 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 11:22:27,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 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 11:22:27,517 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 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 11:22:27,517 INFO L175 Difference]: Start difference. First operand has 276 places, 323 transitions, 2913 flow. Second operand 17 states and 1984 transitions. [2022-11-20 11:22:27,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 397 transitions, 4465 flow [2022-11-20 11:22:28,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 397 transitions, 4157 flow, removed 118 selfloop flow, removed 23 redundant places. [2022-11-20 11:22:28,228 INFO L231 Difference]: Finished difference. Result has 271 places, 326 transitions, 2964 flow [2022-11-20 11:22:28,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=2637, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2964, PETRI_PLACES=271, PETRI_TRANSITIONS=326} [2022-11-20 11:22:28,229 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 128 predicate places. [2022-11-20 11:22:28,230 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 326 transitions, 2964 flow [2022-11-20 11:22:28,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 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 11:22:28,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:28,230 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:28,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:22:28,231 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 11:22:28,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:28,231 INFO L85 PathProgramCache]: Analyzing trace with hash 604850985, now seen corresponding path program 4 times [2022-11-20 11:22:28,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:28,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478641698] [2022-11-20 11:22:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:28,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat