./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:45:30,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:45:30,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:45:30,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:45:30,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:45:30,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:45:30,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:45:30,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:45:30,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:45:30,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:45:30,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:45:30,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:45:30,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:45:30,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:45:30,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:45:30,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:45:30,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:45:30,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:45:30,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:45:30,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:45:30,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:45:30,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:45:30,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:45:30,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:45:30,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:45:30,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:45:30,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:45:30,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:45:30,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:45:30,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:45:30,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:45:30,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:45:30,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:45:30,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:45:30,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:45:30,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:45:30,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:45:30,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:45:30,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:45:30,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:45:30,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:45:30,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:45:30,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:45:30,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:45:30,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:45:30,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:45:30,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:45:30,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:45:30,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:45:30,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:45:30,197 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:45:30,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:45:30,198 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:45:30,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:45:30,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:45:30,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:45:30,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:45:30,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:45:30,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:45:30,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:45:30,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:45:30,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:45:30,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:45:30,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:45:30,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:45:30,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:45:30,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:45:30,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:45:30,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:45:30,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:45:30,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:45:30,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:45:30,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:45:30,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:45:30,200 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:45:30,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:45:30,200 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:45:30,200 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-12-13 16:45:30,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:45:30,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:45:30,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:45:30,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:45:30,387 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:45:30,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-12-13 16:45:32,950 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:45:33,104 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:45:33,105 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-12-13 16:45:33,110 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/data/0f1a1ce3c/25a733a2e1bc4b278a6ee0f0945dde25/FLAG2f6934de5 [2022-12-13 16:45:33,521 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/data/0f1a1ce3c/25a733a2e1bc4b278a6ee0f0945dde25 [2022-12-13 16:45:33,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:45:33,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:45:33,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:45:33,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:45:33,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:45:33,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114d6ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33, skipping insertion in model container [2022-12-13 16:45:33,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:45:33,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:45:33,662 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_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-12-13 16:45:33,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:45:33,678 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:45:33,694 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_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-12-13 16:45:33,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:45:33,709 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:45:33,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33 WrapperNode [2022-12-13 16:45:33,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:45:33,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:45:33,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:45:33,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:45:33,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,740 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 282 [2022-12-13 16:45:33,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:45:33,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:45:33,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:45:33,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:45:33,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,761 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:45:33,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:45:33,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:45:33,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:45:33,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (1/1) ... [2022-12-13 16:45:33,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:45:33,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:45:33,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:45:33,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:45:33,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:45:33,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:45:33,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:45:33,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:45:33,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:45:33,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:45:33,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:45:33,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:45:33,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:45:33,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:45:33,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:45:33,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:45:33,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:45:33,826 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:45:33,910 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:45:33,911 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:45:34,237 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:45:34,249 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:45:34,249 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 16:45:34,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:45:34 BoogieIcfgContainer [2022-12-13 16:45:34,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:45:34,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:45:34,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:45:34,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:45:34,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:45:33" (1/3) ... [2022-12-13 16:45:34,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c85699d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:45:34, skipping insertion in model container [2022-12-13 16:45:34,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:45:33" (2/3) ... [2022-12-13 16:45:34,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c85699d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:45:34, skipping insertion in model container [2022-12-13 16:45:34,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:45:34" (3/3) ... [2022-12-13 16:45:34,258 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-12-13 16:45:34,265 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:45:34,273 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:45:34,273 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:45:34,273 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:45:34,344 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 16:45:34,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 374 transitions, 764 flow [2022-12-13 16:45:34,505 INFO L130 PetriNetUnfolder]: 28/372 cut-off events. [2022-12-13 16:45:34,506 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:45:34,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 372 events. 28/372 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 356 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 293. Up to 2 conditions per place. [2022-12-13 16:45:34,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 353 places, 374 transitions, 764 flow [2022-12-13 16:45:34,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 363 transitions, 738 flow [2022-12-13 16:45:34,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:45:34,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 363 transitions, 738 flow [2022-12-13 16:45:34,536 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 363 transitions, 738 flow [2022-12-13 16:45:34,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 363 transitions, 738 flow [2022-12-13 16:45:34,605 INFO L130 PetriNetUnfolder]: 28/363 cut-off events. [2022-12-13 16:45:34,605 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:45:34,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 363 events. 28/363 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 357 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 293. Up to 2 conditions per place. [2022-12-13 16:45:34,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 7452 [2022-12-13 16:45:45,611 INFO L134 LiptonReduction]: Checked pairs total: 7782 [2022-12-13 16:45:45,612 INFO L136 LiptonReduction]: Total number of compositions: 430 [2022-12-13 16:45:45,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:45:45,627 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;@180a65f1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:45:45,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 16:45:45,631 INFO L130 PetriNetUnfolder]: 6/25 cut-off events. [2022-12-13 16:45:45,632 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:45:45,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:45,632 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:45:45,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:45,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1388475465, now seen corresponding path program 1 times [2022-12-13 16:45:45,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:45,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791576419] [2022-12-13 16:45:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:45,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:45:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:45,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791576419] [2022-12-13 16:45:45,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791576419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:45,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:45,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:45:45,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921090565] [2022-12-13 16:45:45,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:45,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:45:45,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:45,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:45:45,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:45:45,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 804 [2022-12-13 16:45:45,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:45,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:45,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 804 [2022-12-13 16:45:45,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:45,992 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2022-12-13 16:45:45,993 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 16:45:45,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 120 events. 61/120 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 290 event pairs, 33 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 220. Up to 91 conditions per place. [2022-12-13 16:45:45,994 INFO L137 encePairwiseOnDemand]: 800/804 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2022-12-13 16:45:45,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2022-12-13 16:45:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:45:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:45:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1058 transitions. [2022-12-13 16:45:46,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4386401326699834 [2022-12-13 16:45:46,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1058 transitions. [2022-12-13 16:45:46,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1058 transitions. [2022-12-13 16:45:46,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:46,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1058 transitions. [2022-12-13 16:45:46,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.6666666666667) internal successors, (1058), 3 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 804.0) internal successors, (3216), 4 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 804.0) internal successors, (3216), 4 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,028 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 64 flow. Second operand 3 states and 1058 transitions. [2022-12-13 16:45:46,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2022-12-13 16:45:46,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 31 transitions, 129 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 16:45:46,032 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 74 flow [2022-12-13 16:45:46,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2022-12-13 16:45:46,036 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2022-12-13 16:45:46,037 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 74 flow [2022-12-13 16:45:46,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:46,037 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:45:46,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:45:46,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash -764406595, now seen corresponding path program 1 times [2022-12-13 16:45:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:46,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503456346] [2022-12-13 16:45:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:46,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:45:46,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:46,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503456346] [2022-12-13 16:45:46,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503456346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:46,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:46,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:45:46,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381842581] [2022-12-13 16:45:46,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:46,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:45:46,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:46,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:45:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:45:46,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 804 [2022-12-13 16:45:46,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 347.3333333333333) internal successors, (1042), 3 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:46,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 804 [2022-12-13 16:45:46,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:46,309 INFO L130 PetriNetUnfolder]: 61/121 cut-off events. [2022-12-13 16:45:46,309 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 16:45:46,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 121 events. 61/121 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 283 event pairs, 45 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 183. Up to 121 conditions per place. [2022-12-13 16:45:46,310 INFO L137 encePairwiseOnDemand]: 801/804 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2022-12-13 16:45:46,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 132 flow [2022-12-13 16:45:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:45:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:45:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2022-12-13 16:45:46,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4357379767827529 [2022-12-13 16:45:46,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2022-12-13 16:45:46,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2022-12-13 16:45:46,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:46,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2022-12-13 16:45:46,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 804.0) internal successors, (3216), 4 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 804.0) internal successors, (3216), 4 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,319 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 74 flow. Second operand 3 states and 1051 transitions. [2022-12-13 16:45:46,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 132 flow [2022-12-13 16:45:46,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:45:46,320 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 80 flow [2022-12-13 16:45:46,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2022-12-13 16:45:46,321 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2022-12-13 16:45:46,321 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 80 flow [2022-12-13 16:45:46,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.3333333333333) internal successors, (1042), 3 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:46,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:45:46,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:45:46,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:46,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:46,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1109604865, now seen corresponding path program 1 times [2022-12-13 16:45:46,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:46,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036463692] [2022-12-13 16:45:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:46,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:45:46,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:46,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036463692] [2022-12-13 16:45:46,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036463692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:46,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:46,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:45:46,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556666400] [2022-12-13 16:45:46,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:46,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:45:46,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:46,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:45:46,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:45:46,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 804 [2022-12-13 16:45:46,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:46,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 804 [2022-12-13 16:45:46,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:46,561 INFO L130 PetriNetUnfolder]: 61/122 cut-off events. [2022-12-13 16:45:46,561 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 16:45:46,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 122 events. 61/122 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 283 event pairs, 45 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 281. Up to 121 conditions per place. [2022-12-13 16:45:46,562 INFO L137 encePairwiseOnDemand]: 800/804 looper letters, 26 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2022-12-13 16:45:46,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 140 flow [2022-12-13 16:45:46,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:45:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:45:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1384 transitions. [2022-12-13 16:45:46,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43034825870646765 [2022-12-13 16:45:46,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1384 transitions. [2022-12-13 16:45:46,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1384 transitions. [2022-12-13 16:45:46,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:46,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1384 transitions. [2022-12-13 16:45:46,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 804.0) internal successors, (4020), 5 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 804.0) internal successors, (4020), 5 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,589 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 80 flow. Second operand 4 states and 1384 transitions. [2022-12-13 16:45:46,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 140 flow [2022-12-13 16:45:46,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 136 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 16:45:46,590 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 90 flow [2022-12-13 16:45:46,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2022-12-13 16:45:46,591 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2022-12-13 16:45:46,591 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 90 flow [2022-12-13 16:45:46,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:46,591 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] [2022-12-13 16:45:46,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:45:46,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:46,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:46,592 INFO L85 PathProgramCache]: Analyzing trace with hash 421237759, now seen corresponding path program 1 times [2022-12-13 16:45:46,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:46,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248224493] [2022-12-13 16:45:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:46,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:45:46,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:46,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248224493] [2022-12-13 16:45:46,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248224493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:46,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:46,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:45:46,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103672134] [2022-12-13 16:45:46,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:46,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:45:46,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:46,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:45:46,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:45:46,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 804 [2022-12-13 16:45:46,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 344.25) internal successors, (1377), 4 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:46,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 804 [2022-12-13 16:45:46,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:46,801 INFO L130 PetriNetUnfolder]: 61/123 cut-off events. [2022-12-13 16:45:46,801 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 16:45:46,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 123 events. 61/123 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 283 event pairs, 45 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 281. Up to 122 conditions per place. [2022-12-13 16:45:46,802 INFO L137 encePairwiseOnDemand]: 800/804 looper letters, 27 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2022-12-13 16:45:46,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 152 flow [2022-12-13 16:45:46,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:45:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:45:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1384 transitions. [2022-12-13 16:45:46,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43034825870646765 [2022-12-13 16:45:46,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1384 transitions. [2022-12-13 16:45:46,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1384 transitions. [2022-12-13 16:45:46,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:46,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1384 transitions. [2022-12-13 16:45:46,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 804.0) internal successors, (4020), 5 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,813 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 804.0) internal successors, (4020), 5 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,813 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 90 flow. Second operand 4 states and 1384 transitions. [2022-12-13 16:45:46,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 152 flow [2022-12-13 16:45:46,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 146 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 16:45:46,814 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 98 flow [2022-12-13 16:45:46,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2022-12-13 16:45:46,815 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2022-12-13 16:45:46,815 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 98 flow [2022-12-13 16:45:46,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 344.25) internal successors, (1377), 4 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:46,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:46,816 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] [2022-12-13 16:45:46,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:45:46,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:46,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:46,817 INFO L85 PathProgramCache]: Analyzing trace with hash -563054459, now seen corresponding path program 1 times [2022-12-13 16:45:46,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:46,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007728541] [2022-12-13 16:45:46,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:46,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:45:46,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:46,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007728541] [2022-12-13 16:45:46,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007728541] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:45:46,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28883966] [2022-12-13 16:45:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:46,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:45:46,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:45:46,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:45:46,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:45:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:47,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:45:47,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:45:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:45:47,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:45:47,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28883966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:47,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:45:47,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 16:45:47,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291797043] [2022-12-13 16:45:47,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:47,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:45:47,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:47,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:45:47,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:45:47,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 804 [2022-12-13 16:45:47,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 344.5) internal successors, (1378), 4 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:47,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:47,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 804 [2022-12-13 16:45:47,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:47,244 INFO L130 PetriNetUnfolder]: 61/124 cut-off events. [2022-12-13 16:45:47,244 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 16:45:47,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 124 events. 61/124 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 283 event pairs, 45 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 286. Up to 123 conditions per place. [2022-12-13 16:45:47,245 INFO L137 encePairwiseOnDemand]: 800/804 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2022-12-13 16:45:47,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 162 flow [2022-12-13 16:45:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:45:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:45:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1384 transitions. [2022-12-13 16:45:47,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43034825870646765 [2022-12-13 16:45:47,249 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1384 transitions. [2022-12-13 16:45:47,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1384 transitions. [2022-12-13 16:45:47,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:47,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1384 transitions. [2022-12-13 16:45:47,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:47,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 804.0) internal successors, (4020), 5 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:47,257 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 804.0) internal successors, (4020), 5 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:47,257 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 98 flow. Second operand 4 states and 1384 transitions. [2022-12-13 16:45:47,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 162 flow [2022-12-13 16:45:47,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 156 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 16:45:47,259 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 106 flow [2022-12-13 16:45:47,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2022-12-13 16:45:47,259 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2022-12-13 16:45:47,259 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 106 flow [2022-12-13 16:45:47,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 344.5) internal successors, (1378), 4 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:47,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:47,260 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] [2022-12-13 16:45:47,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:45:47,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:45:47,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -728660262, now seen corresponding path program 1 times [2022-12-13 16:45:47,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:47,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186529855] [2022-12-13 16:45:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:47,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:45:48,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:48,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186529855] [2022-12-13 16:45:48,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186529855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:48,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:48,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:45:48,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623638772] [2022-12-13 16:45:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:48,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:45:48,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:48,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:45:48,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:45:48,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 804 [2022-12-13 16:45:48,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 106 flow. Second operand has 9 states, 9 states have (on average 318.55555555555554) internal successors, (2867), 9 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:48,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:48,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 804 [2022-12-13 16:45:48,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:49,197 INFO L130 PetriNetUnfolder]: 105/225 cut-off events. [2022-12-13 16:45:49,197 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-12-13 16:45:49,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 225 events. 105/225 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 829 event pairs, 9 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 532. Up to 91 conditions per place. [2022-12-13 16:45:49,198 INFO L137 encePairwiseOnDemand]: 796/804 looper letters, 55 selfloop transitions, 6 changer transitions 5/66 dead transitions. [2022-12-13 16:45:49,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 66 transitions, 336 flow [2022-12-13 16:45:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:45:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:45:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2588 transitions. [2022-12-13 16:45:49,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.402363184079602 [2022-12-13 16:45:49,202 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2588 transitions. [2022-12-13 16:45:49,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2588 transitions. [2022-12-13 16:45:49,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:49,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2588 transitions. [2022-12-13 16:45:49,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 323.5) internal successors, (2588), 8 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:49,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:49,215 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:49,215 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 106 flow. Second operand 8 states and 2588 transitions. [2022-12-13 16:45:49,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 66 transitions, 336 flow [2022-12-13 16:45:49,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 66 transitions, 330 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 16:45:49,216 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 128 flow [2022-12-13 16:45:49,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=128, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2022-12-13 16:45:49,217 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2022-12-13 16:45:49,217 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 128 flow [2022-12-13 16:45:49,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 318.55555555555554) internal successors, (2867), 9 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:49,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:49,218 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] [2022-12-13 16:45:49,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:45:49,218 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:49,218 INFO L85 PathProgramCache]: Analyzing trace with hash 908928760, now seen corresponding path program 2 times [2022-12-13 16:45:49,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:49,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255475870] [2022-12-13 16:45:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:45:49,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:49,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255475870] [2022-12-13 16:45:49,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255475870] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:49,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:49,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:45:49,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701596077] [2022-12-13 16:45:49,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:49,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:45:49,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:49,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:45:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:45:50,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 804 [2022-12-13 16:45:50,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 326.8333333333333) internal successors, (1961), 6 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:50,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:50,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 804 [2022-12-13 16:45:50,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:50,606 INFO L130 PetriNetUnfolder]: 112/250 cut-off events. [2022-12-13 16:45:50,606 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2022-12-13 16:45:50,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 250 events. 112/250 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 967 event pairs, 30 based on Foata normal form. 1/250 useless extension candidates. Maximal degree in co-relation 681. Up to 112 conditions per place. [2022-12-13 16:45:50,607 INFO L137 encePairwiseOnDemand]: 799/804 looper letters, 54 selfloop transitions, 4 changer transitions 5/63 dead transitions. [2022-12-13 16:45:50,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 353 flow [2022-12-13 16:45:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:45:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:45:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1993 transitions. [2022-12-13 16:45:50,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41314262023217246 [2022-12-13 16:45:50,610 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1993 transitions. [2022-12-13 16:45:50,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1993 transitions. [2022-12-13 16:45:50,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:50,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1993 transitions. [2022-12-13 16:45:50,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 332.1666666666667) internal successors, (1993), 6 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:50,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:50,619 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:50,619 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 128 flow. Second operand 6 states and 1993 transitions. [2022-12-13 16:45:50,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 353 flow [2022-12-13 16:45:50,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 63 transitions, 337 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 16:45:50,621 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 146 flow [2022-12-13 16:45:50,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2022-12-13 16:45:50,621 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2022-12-13 16:45:50,621 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 146 flow [2022-12-13 16:45:50,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 326.8333333333333) internal successors, (1961), 6 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:50,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:50,622 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] [2022-12-13 16:45:50,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:45:50,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:50,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1046831564, now seen corresponding path program 3 times [2022-12-13 16:45:50,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:50,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565740649] [2022-12-13 16:45:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:45:51,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:51,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565740649] [2022-12-13 16:45:51,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565740649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:51,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:51,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:45:51,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232210774] [2022-12-13 16:45:51,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:51,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:45:51,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:51,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:45:51,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:45:51,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 804 [2022-12-13 16:45:51,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 146 flow. Second operand has 8 states, 8 states have (on average 316.875) internal successors, (2535), 8 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:51,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:51,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 804 [2022-12-13 16:45:51,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:52,145 INFO L130 PetriNetUnfolder]: 168/409 cut-off events. [2022-12-13 16:45:52,145 INFO L131 PetriNetUnfolder]: For 581/581 co-relation queries the response was YES. [2022-12-13 16:45:52,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 409 events. 168/409 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2058 event pairs, 52 based on Foata normal form. 1/409 useless extension candidates. Maximal degree in co-relation 1200. Up to 209 conditions per place. [2022-12-13 16:45:52,146 INFO L137 encePairwiseOnDemand]: 794/804 looper letters, 58 selfloop transitions, 15 changer transitions 6/79 dead transitions. [2022-12-13 16:45:52,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 472 flow [2022-12-13 16:45:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:45:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:45:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2584 transitions. [2022-12-13 16:45:52,150 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4017412935323383 [2022-12-13 16:45:52,150 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2584 transitions. [2022-12-13 16:45:52,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2584 transitions. [2022-12-13 16:45:52,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:52,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2584 transitions. [2022-12-13 16:45:52,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:52,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:52,160 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:52,160 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 146 flow. Second operand 8 states and 2584 transitions. [2022-12-13 16:45:52,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 472 flow [2022-12-13 16:45:52,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 79 transitions, 457 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 16:45:52,162 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 259 flow [2022-12-13 16:45:52,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=259, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2022-12-13 16:45:52,163 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 29 predicate places. [2022-12-13 16:45:52,163 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 259 flow [2022-12-13 16:45:52,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 316.875) internal successors, (2535), 8 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:52,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:52,164 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] [2022-12-13 16:45:52,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:45:52,164 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:52,164 INFO L85 PathProgramCache]: Analyzing trace with hash -748364398, now seen corresponding path program 4 times [2022-12-13 16:45:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:52,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926091577] [2022-12-13 16:45:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:52,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:45:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:53,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926091577] [2022-12-13 16:45:53,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926091577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:53,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:53,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:45:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428342343] [2022-12-13 16:45:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:45:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:45:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:45:53,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 804 [2022-12-13 16:45:53,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 314.875) internal successors, (2519), 8 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:53,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:53,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 804 [2022-12-13 16:45:53,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:54,045 INFO L130 PetriNetUnfolder]: 165/400 cut-off events. [2022-12-13 16:45:54,045 INFO L131 PetriNetUnfolder]: For 676/676 co-relation queries the response was YES. [2022-12-13 16:45:54,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 400 events. 165/400 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1966 event pairs, 60 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 1421. Up to 209 conditions per place. [2022-12-13 16:45:54,047 INFO L137 encePairwiseOnDemand]: 794/804 looper letters, 68 selfloop transitions, 15 changer transitions 5/88 dead transitions. [2022-12-13 16:45:54,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 628 flow [2022-12-13 16:45:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:45:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:45:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2566 transitions. [2022-12-13 16:45:54,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3989427860696517 [2022-12-13 16:45:54,050 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2566 transitions. [2022-12-13 16:45:54,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2566 transitions. [2022-12-13 16:45:54,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:54,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2566 transitions. [2022-12-13 16:45:54,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 320.75) internal successors, (2566), 8 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:54,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:54,059 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:54,059 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 259 flow. Second operand 8 states and 2566 transitions. [2022-12-13 16:45:54,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 628 flow [2022-12-13 16:45:54,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 618 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-13 16:45:54,063 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 390 flow [2022-12-13 16:45:54,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2022-12-13 16:45:54,063 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 40 predicate places. [2022-12-13 16:45:54,063 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 390 flow [2022-12-13 16:45:54,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 314.875) internal successors, (2519), 8 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:54,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:54,064 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] [2022-12-13 16:45:54,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:45:54,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:54,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:54,064 INFO L85 PathProgramCache]: Analyzing trace with hash 824226228, now seen corresponding path program 1 times [2022-12-13 16:45:54,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:54,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742609531] [2022-12-13 16:45:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:54,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:45:54,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:54,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742609531] [2022-12-13 16:45:54,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742609531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:54,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:54,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:45:54,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462292819] [2022-12-13 16:45:54,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:54,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:45:54,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:54,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:45:54,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:45:54,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 804 [2022-12-13 16:45:54,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:54,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:54,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 804 [2022-12-13 16:45:54,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:54,829 INFO L130 PetriNetUnfolder]: 180/470 cut-off events. [2022-12-13 16:45:54,830 INFO L131 PetriNetUnfolder]: For 1381/1381 co-relation queries the response was YES. [2022-12-13 16:45:54,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 470 events. 180/470 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2610 event pairs, 79 based on Foata normal form. 3/472 useless extension candidates. Maximal degree in co-relation 1811. Up to 303 conditions per place. [2022-12-13 16:45:54,833 INFO L137 encePairwiseOnDemand]: 798/804 looper letters, 64 selfloop transitions, 10 changer transitions 8/82 dead transitions. [2022-12-13 16:45:54,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 82 transitions, 733 flow [2022-12-13 16:45:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:45:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:45:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1999 transitions. [2022-12-13 16:45:54,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41438640132669985 [2022-12-13 16:45:54,837 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1999 transitions. [2022-12-13 16:45:54,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1999 transitions. [2022-12-13 16:45:54,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:54,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1999 transitions. [2022-12-13 16:45:54,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 333.1666666666667) internal successors, (1999), 6 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:54,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:54,848 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:54,848 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 390 flow. Second operand 6 states and 1999 transitions. [2022-12-13 16:45:54,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 82 transitions, 733 flow [2022-12-13 16:45:54,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 709 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-12-13 16:45:54,855 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 464 flow [2022-12-13 16:45:54,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2022-12-13 16:45:54,856 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 46 predicate places. [2022-12-13 16:45:54,856 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 464 flow [2022-12-13 16:45:54,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:54,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:54,857 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] [2022-12-13 16:45:54,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:45:54,857 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:54,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:54,857 INFO L85 PathProgramCache]: Analyzing trace with hash -412341014, now seen corresponding path program 2 times [2022-12-13 16:45:54,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:54,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523895358] [2022-12-13 16:45:54,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:54,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:45:55,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:55,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523895358] [2022-12-13 16:45:55,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523895358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:55,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:55,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:45:55,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846075618] [2022-12-13 16:45:55,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:45:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:45:55,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:45:55,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 804 [2022-12-13 16:45:55,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:55,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:55,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 804 [2022-12-13 16:45:55,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:55,850 INFO L130 PetriNetUnfolder]: 174/473 cut-off events. [2022-12-13 16:45:55,850 INFO L131 PetriNetUnfolder]: For 1747/1747 co-relation queries the response was YES. [2022-12-13 16:45:55,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2006 conditions, 473 events. 174/473 cut-off events. For 1747/1747 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2699 event pairs, 42 based on Foata normal form. 6/478 useless extension candidates. Maximal degree in co-relation 1966. Up to 210 conditions per place. [2022-12-13 16:45:55,852 INFO L137 encePairwiseOnDemand]: 799/804 looper letters, 68 selfloop transitions, 4 changer transitions 14/86 dead transitions. [2022-12-13 16:45:55,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 86 transitions, 811 flow [2022-12-13 16:45:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:45:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:45:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1996 transitions. [2022-12-13 16:45:55,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41376451077943616 [2022-12-13 16:45:55,855 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1996 transitions. [2022-12-13 16:45:55,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1996 transitions. [2022-12-13 16:45:55,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:55,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1996 transitions. [2022-12-13 16:45:55,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 332.6666666666667) internal successors, (1996), 6 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:55,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:55,861 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:55,861 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 464 flow. Second operand 6 states and 1996 transitions. [2022-12-13 16:45:55,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 86 transitions, 811 flow [2022-12-13 16:45:55,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 803 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 16:45:55,866 INFO L231 Difference]: Finished difference. Result has 80 places, 57 transitions, 453 flow [2022-12-13 16:45:55,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=453, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2022-12-13 16:45:55,867 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 53 predicate places. [2022-12-13 16:45:55,867 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 453 flow [2022-12-13 16:45:55,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:55,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:55,868 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] [2022-12-13 16:45:55,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:45:55,868 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:55,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1611984936, now seen corresponding path program 3 times [2022-12-13 16:45:55,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:55,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300612518] [2022-12-13 16:45:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:55,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:45:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:56,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300612518] [2022-12-13 16:45:56,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300612518] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:56,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:56,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:45:56,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965822054] [2022-12-13 16:45:56,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:56,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:45:56,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:56,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:45:56,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:45:56,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 804 [2022-12-13 16:45:56,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 57 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:56,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:56,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 804 [2022-12-13 16:45:56,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:56,509 INFO L130 PetriNetUnfolder]: 156/422 cut-off events. [2022-12-13 16:45:56,510 INFO L131 PetriNetUnfolder]: For 2425/2425 co-relation queries the response was YES. [2022-12-13 16:45:56,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 422 events. 156/422 cut-off events. For 2425/2425 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2277 event pairs, 79 based on Foata normal form. 3/424 useless extension candidates. Maximal degree in co-relation 1832. Up to 303 conditions per place. [2022-12-13 16:45:56,511 INFO L137 encePairwiseOnDemand]: 798/804 looper letters, 59 selfloop transitions, 8 changer transitions 11/78 dead transitions. [2022-12-13 16:45:56,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 765 flow [2022-12-13 16:45:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:45:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:45:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1997 transitions. [2022-12-13 16:45:56,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41397180762852404 [2022-12-13 16:45:56,514 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1997 transitions. [2022-12-13 16:45:56,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1997 transitions. [2022-12-13 16:45:56,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:56,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1997 transitions. [2022-12-13 16:45:56,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 332.8333333333333) internal successors, (1997), 6 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) [2022-12-13 16:45:56,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:56,520 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:56,521 INFO L175 Difference]: Start difference. First operand has 80 places, 57 transitions, 453 flow. Second operand 6 states and 1997 transitions. [2022-12-13 16:45:56,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 765 flow [2022-12-13 16:45:56,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 737 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 16:45:56,526 INFO L231 Difference]: Finished difference. Result has 80 places, 57 transitions, 467 flow [2022-12-13 16:45:56,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=467, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2022-12-13 16:45:56,526 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 53 predicate places. [2022-12-13 16:45:56,526 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 467 flow [2022-12-13 16:45:56,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:56,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:56,527 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] [2022-12-13 16:45:56,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:45:56,527 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:56,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:56,528 INFO L85 PathProgramCache]: Analyzing trace with hash 631431188, now seen corresponding path program 4 times [2022-12-13 16:45:56,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:56,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168774495] [2022-12-13 16:45:56,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:56,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:45:56,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:56,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168774495] [2022-12-13 16:45:56,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168774495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:56,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:56,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:45:56,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813973257] [2022-12-13 16:45:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:56,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:45:56,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:56,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:45:56,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:45:57,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 804 [2022-12-13 16:45:57,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 57 transitions, 467 flow. Second operand has 6 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:57,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:57,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 804 [2022-12-13 16:45:57,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:57,329 INFO L130 PetriNetUnfolder]: 150/392 cut-off events. [2022-12-13 16:45:57,329 INFO L131 PetriNetUnfolder]: For 2107/2107 co-relation queries the response was YES. [2022-12-13 16:45:57,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1812 conditions, 392 events. 150/392 cut-off events. For 2107/2107 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2019 event pairs, 83 based on Foata normal form. 3/394 useless extension candidates. Maximal degree in co-relation 1769. Up to 303 conditions per place. [2022-12-13 16:45:57,331 INFO L137 encePairwiseOnDemand]: 798/804 looper letters, 51 selfloop transitions, 4 changer transitions 18/73 dead transitions. [2022-12-13 16:45:57,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 73 transitions, 724 flow [2022-12-13 16:45:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:45:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:45:57,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1993 transitions. [2022-12-13 16:45:57,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41314262023217246 [2022-12-13 16:45:57,333 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1993 transitions. [2022-12-13 16:45:57,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1993 transitions. [2022-12-13 16:45:57,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:57,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1993 transitions. [2022-12-13 16:45:57,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 332.1666666666667) internal successors, (1993), 6 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:57,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:57,339 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:57,339 INFO L175 Difference]: Start difference. First operand has 80 places, 57 transitions, 467 flow. Second operand 6 states and 1993 transitions. [2022-12-13 16:45:57,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 73 transitions, 724 flow [2022-12-13 16:45:57,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 700 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 16:45:57,346 INFO L231 Difference]: Finished difference. Result has 83 places, 55 transitions, 451 flow [2022-12-13 16:45:57,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=83, PETRI_TRANSITIONS=55} [2022-12-13 16:45:57,347 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 56 predicate places. [2022-12-13 16:45:57,347 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 55 transitions, 451 flow [2022-12-13 16:45:57,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:57,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:57,347 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] [2022-12-13 16:45:57,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:45:57,348 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:57,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:57,348 INFO L85 PathProgramCache]: Analyzing trace with hash 759622914, now seen corresponding path program 5 times [2022-12-13 16:45:57,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:57,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881839869] [2022-12-13 16:45:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:57,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:45:58,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:58,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881839869] [2022-12-13 16:45:58,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881839869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:58,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:58,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:45:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273669359] [2022-12-13 16:45:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:58,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:45:58,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:45:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:45:58,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 804 [2022-12-13 16:45:58,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 55 transitions, 451 flow. Second operand has 10 states, 10 states have (on average 318.3) internal successors, (3183), 10 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:58,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:45:58,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 804 [2022-12-13 16:45:58,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:45:58,781 INFO L130 PetriNetUnfolder]: 131/356 cut-off events. [2022-12-13 16:45:58,781 INFO L131 PetriNetUnfolder]: For 2327/2327 co-relation queries the response was YES. [2022-12-13 16:45:58,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 356 events. 131/356 cut-off events. For 2327/2327 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1789 event pairs, 30 based on Foata normal form. 2/357 useless extension candidates. Maximal degree in co-relation 1616. Up to 265 conditions per place. [2022-12-13 16:45:58,784 INFO L137 encePairwiseOnDemand]: 798/804 looper letters, 56 selfloop transitions, 8 changer transitions 9/73 dead transitions. [2022-12-13 16:45:58,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 73 transitions, 700 flow [2022-12-13 16:45:58,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:45:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:45:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2259 transitions. [2022-12-13 16:45:58,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4013859275053305 [2022-12-13 16:45:58,789 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2259 transitions. [2022-12-13 16:45:58,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2259 transitions. [2022-12-13 16:45:58,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:45:58,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2259 transitions. [2022-12-13 16:45:58,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.7142857142857) internal successors, (2259), 7 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:58,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 804.0) internal successors, (6432), 8 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:58,800 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 804.0) internal successors, (6432), 8 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:58,800 INFO L175 Difference]: Start difference. First operand has 83 places, 55 transitions, 451 flow. Second operand 7 states and 2259 transitions. [2022-12-13 16:45:58,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 73 transitions, 700 flow [2022-12-13 16:45:58,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 638 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-12-13 16:45:58,809 INFO L231 Difference]: Finished difference. Result has 81 places, 53 transitions, 415 flow [2022-12-13 16:45:58,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=415, PETRI_PLACES=81, PETRI_TRANSITIONS=53} [2022-12-13 16:45:58,810 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 54 predicate places. [2022-12-13 16:45:58,810 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 53 transitions, 415 flow [2022-12-13 16:45:58,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 318.3) internal successors, (3183), 10 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:45:58,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:45:58,810 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] [2022-12-13 16:45:58,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:45:58,811 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:45:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1528585990, now seen corresponding path program 6 times [2022-12-13 16:45:58,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:58,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789574045] [2022-12-13 16:45:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:58,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:45:59,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:59,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789574045] [2022-12-13 16:45:59,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789574045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:59,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:59,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 16:45:59,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012188230] [2022-12-13 16:45:59,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:59,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 16:45:59,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:59,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 16:45:59,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:46:00,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 804 [2022-12-13 16:46:00,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 53 transitions, 415 flow. Second operand has 14 states, 14 states have (on average 304.64285714285717) internal successors, (4265), 14 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:00,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:46:00,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 804 [2022-12-13 16:46:00,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:46:01,437 INFO L130 PetriNetUnfolder]: 132/398 cut-off events. [2022-12-13 16:46:01,438 INFO L131 PetriNetUnfolder]: For 1708/1708 co-relation queries the response was YES. [2022-12-13 16:46:01,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 398 events. 132/398 cut-off events. For 1708/1708 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2206 event pairs, 6 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 1604. Up to 100 conditions per place. [2022-12-13 16:46:01,439 INFO L137 encePairwiseOnDemand]: 792/804 looper letters, 67 selfloop transitions, 34 changer transitions 5/106 dead transitions. [2022-12-13 16:46:01,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 947 flow [2022-12-13 16:46:01,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:46:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 16:46:01,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3714 transitions. [2022-12-13 16:46:01,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3849502487562189 [2022-12-13 16:46:01,444 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3714 transitions. [2022-12-13 16:46:01,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3714 transitions. [2022-12-13 16:46:01,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:46:01,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3714 transitions. [2022-12-13 16:46:01,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 309.5) internal successors, (3714), 12 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:01,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 804.0) internal successors, (10452), 13 states have internal predecessors, (10452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:01,453 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 804.0) internal successors, (10452), 13 states have internal predecessors, (10452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:01,453 INFO L175 Difference]: Start difference. First operand has 81 places, 53 transitions, 415 flow. Second operand 12 states and 3714 transitions. [2022-12-13 16:46:01,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 947 flow [2022-12-13 16:46:01,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 913 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-12-13 16:46:01,458 INFO L231 Difference]: Finished difference. Result has 89 places, 68 transitions, 689 flow [2022-12-13 16:46:01,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=689, PETRI_PLACES=89, PETRI_TRANSITIONS=68} [2022-12-13 16:46:01,458 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 62 predicate places. [2022-12-13 16:46:01,458 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 68 transitions, 689 flow [2022-12-13 16:46:01,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 304.64285714285717) internal successors, (4265), 14 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:01,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:46:01,459 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] [2022-12-13 16:46:01,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:46:01,459 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:46:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:46:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash 128522882, now seen corresponding path program 7 times [2022-12-13 16:46:01,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:46:01,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673174581] [2022-12-13 16:46:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:01,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:46:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:46:02,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:02,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673174581] [2022-12-13 16:46:02,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673174581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:46:02,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:46:02,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:46:02,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625200324] [2022-12-13 16:46:02,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:02,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 16:46:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:02,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 16:46:02,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:46:02,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 804 [2022-12-13 16:46:02,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 68 transitions, 689 flow. Second operand has 11 states, 11 states have (on average 307.09090909090907) internal successors, (3378), 11 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:02,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:46:02,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 804 [2022-12-13 16:46:02,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:46:03,443 INFO L130 PetriNetUnfolder]: 135/403 cut-off events. [2022-12-13 16:46:03,443 INFO L131 PetriNetUnfolder]: For 2217/2217 co-relation queries the response was YES. [2022-12-13 16:46:03,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1984 conditions, 403 events. 135/403 cut-off events. For 2217/2217 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2224 event pairs, 20 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 1937. Up to 151 conditions per place. [2022-12-13 16:46:03,445 INFO L137 encePairwiseOnDemand]: 791/804 looper letters, 62 selfloop transitions, 41 changer transitions 8/111 dead transitions. [2022-12-13 16:46:03,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 111 transitions, 1187 flow [2022-12-13 16:46:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:46:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 16:46:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3729 transitions. [2022-12-13 16:46:03,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3865049751243781 [2022-12-13 16:46:03,450 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3729 transitions. [2022-12-13 16:46:03,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3729 transitions. [2022-12-13 16:46:03,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:46:03,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3729 transitions. [2022-12-13 16:46:03,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 310.75) internal successors, (3729), 12 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:03,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 804.0) internal successors, (10452), 13 states have internal predecessors, (10452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:03,460 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 804.0) internal successors, (10452), 13 states have internal predecessors, (10452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:03,460 INFO L175 Difference]: Start difference. First operand has 89 places, 68 transitions, 689 flow. Second operand 12 states and 3729 transitions. [2022-12-13 16:46:03,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 111 transitions, 1187 flow [2022-12-13 16:46:03,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 111 transitions, 1144 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-12-13 16:46:03,468 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 955 flow [2022-12-13 16:46:03,468 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=955, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2022-12-13 16:46:03,468 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 72 predicate places. [2022-12-13 16:46:03,468 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 955 flow [2022-12-13 16:46:03,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 307.09090909090907) internal successors, (3378), 11 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:03,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:46:03,469 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] [2022-12-13 16:46:03,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:46:03,469 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:46:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:46:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash -466505734, now seen corresponding path program 8 times [2022-12-13 16:46:03,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:46:03,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430020299] [2022-12-13 16:46:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:03,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:46:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:46:04,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:04,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430020299] [2022-12-13 16:46:04,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430020299] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:46:04,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:46:04,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:46:04,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107294501] [2022-12-13 16:46:04,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:04,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:46:04,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:46:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:46:04,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 804 [2022-12-13 16:46:04,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 955 flow. Second operand has 10 states, 10 states have (on average 318.3) internal successors, (3183), 10 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:04,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:46:04,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 804 [2022-12-13 16:46:04,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:46:04,647 INFO L130 PetriNetUnfolder]: 134/396 cut-off events. [2022-12-13 16:46:04,647 INFO L131 PetriNetUnfolder]: For 2780/2780 co-relation queries the response was YES. [2022-12-13 16:46:04,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 396 events. 134/396 cut-off events. For 2780/2780 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2154 event pairs, 12 based on Foata normal form. 1/396 useless extension candidates. Maximal degree in co-relation 2070. Up to 196 conditions per place. [2022-12-13 16:46:04,649 INFO L137 encePairwiseOnDemand]: 798/804 looper letters, 73 selfloop transitions, 20 changer transitions 6/99 dead transitions. [2022-12-13 16:46:04,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 99 transitions, 1225 flow [2022-12-13 16:46:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:46:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:46:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2261 transitions. [2022-12-13 16:46:04,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4017412935323383 [2022-12-13 16:46:04,652 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2261 transitions. [2022-12-13 16:46:04,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2261 transitions. [2022-12-13 16:46:04,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:46:04,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2261 transitions. [2022-12-13 16:46:04,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:04,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 804.0) internal successors, (6432), 8 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:04,657 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 804.0) internal successors, (6432), 8 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:04,657 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 955 flow. Second operand 7 states and 2261 transitions. [2022-12-13 16:46:04,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 99 transitions, 1225 flow [2022-12-13 16:46:04,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 99 transitions, 1182 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-12-13 16:46:04,666 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 940 flow [2022-12-13 16:46:04,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=940, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2022-12-13 16:46:04,667 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 73 predicate places. [2022-12-13 16:46:04,667 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 940 flow [2022-12-13 16:46:04,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 318.3) internal successors, (3183), 10 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:04,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:46:04,667 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] [2022-12-13 16:46:04,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:46:04,668 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:46:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:46:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash -76771186, now seen corresponding path program 5 times [2022-12-13 16:46:04,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:46:04,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345773232] [2022-12-13 16:46:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:46:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:46:05,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:05,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345773232] [2022-12-13 16:46:05,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345773232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:46:05,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:46:05,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:46:05,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846473884] [2022-12-13 16:46:05,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:46:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:46:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:46:05,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 804 [2022-12-13 16:46:05,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 940 flow. Second operand has 9 states, 9 states have (on average 322.55555555555554) internal successors, (2903), 9 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:05,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:46:05,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 804 [2022-12-13 16:46:05,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:46:05,796 INFO L130 PetriNetUnfolder]: 129/372 cut-off events. [2022-12-13 16:46:05,796 INFO L131 PetriNetUnfolder]: For 2749/2749 co-relation queries the response was YES. [2022-12-13 16:46:05,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 372 events. 129/372 cut-off events. For 2749/2749 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1937 event pairs, 49 based on Foata normal form. 4/375 useless extension candidates. Maximal degree in co-relation 1968. Up to 176 conditions per place. [2022-12-13 16:46:05,798 INFO L137 encePairwiseOnDemand]: 799/804 looper letters, 66 selfloop transitions, 17 changer transitions 14/97 dead transitions. [2022-12-13 16:46:05,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 1267 flow [2022-12-13 16:46:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:46:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:46:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1958 transitions. [2022-12-13 16:46:05,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4058872305140962 [2022-12-13 16:46:05,801 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1958 transitions. [2022-12-13 16:46:05,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1958 transitions. [2022-12-13 16:46:05,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:46:05,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1958 transitions. [2022-12-13 16:46:05,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.3333333333333) internal successors, (1958), 6 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:05,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:05,805 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:05,805 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 940 flow. Second operand 6 states and 1958 transitions. [2022-12-13 16:46:05,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 97 transitions, 1267 flow [2022-12-13 16:46:05,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 1204 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-12-13 16:46:05,812 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 879 flow [2022-12-13 16:46:05,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=879, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2022-12-13 16:46:05,812 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 68 predicate places. [2022-12-13 16:46:05,812 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 879 flow [2022-12-13 16:46:05,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 322.55555555555554) internal successors, (2903), 9 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:05,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:46:05,813 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] [2022-12-13 16:46:05,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:46:05,813 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:46:05,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:46:05,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1950935730, now seen corresponding path program 6 times [2022-12-13 16:46:05,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:46:05,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461865667] [2022-12-13 16:46:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:46:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:46:06,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:06,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461865667] [2022-12-13 16:46:06,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461865667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:46:06,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:46:06,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:46:06,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884664331] [2022-12-13 16:46:06,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:06,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:46:06,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:06,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:46:06,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:46:06,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 804 [2022-12-13 16:46:06,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 879 flow. Second operand has 10 states, 10 states have (on average 320.3) internal successors, (3203), 10 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:06,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:46:06,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 804 [2022-12-13 16:46:06,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:46:06,829 INFO L130 PetriNetUnfolder]: 108/325 cut-off events. [2022-12-13 16:46:06,829 INFO L131 PetriNetUnfolder]: For 1984/1984 co-relation queries the response was YES. [2022-12-13 16:46:06,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 325 events. 108/325 cut-off events. For 1984/1984 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1647 event pairs, 72 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1693. Up to 269 conditions per place. [2022-12-13 16:46:06,830 INFO L137 encePairwiseOnDemand]: 796/804 looper letters, 78 selfloop transitions, 7 changer transitions 9/94 dead transitions. [2022-12-13 16:46:06,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 1145 flow [2022-12-13 16:46:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:46:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:46:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2591 transitions. [2022-12-13 16:46:06,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40282960199004975 [2022-12-13 16:46:06,833 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2591 transitions. [2022-12-13 16:46:06,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2591 transitions. [2022-12-13 16:46:06,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:46:06,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2591 transitions. [2022-12-13 16:46:06,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 323.875) internal successors, (2591), 8 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:06,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:06,839 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:06,839 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 879 flow. Second operand 8 states and 2591 transitions. [2022-12-13 16:46:06,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 1145 flow [2022-12-13 16:46:06,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 1111 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 16:46:06,845 INFO L231 Difference]: Finished difference. Result has 98 places, 77 transitions, 864 flow [2022-12-13 16:46:06,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=864, PETRI_PLACES=98, PETRI_TRANSITIONS=77} [2022-12-13 16:46:06,846 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 71 predicate places. [2022-12-13 16:46:06,846 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 77 transitions, 864 flow [2022-12-13 16:46:06,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 320.3) internal successors, (3203), 10 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:06,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:46:06,846 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] [2022-12-13 16:46:06,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 16:46:06,846 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:46:06,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:46:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1746318960, now seen corresponding path program 7 times [2022-12-13 16:46:06,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:46:06,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505572050] [2022-12-13 16:46:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:06,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:46:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:46:07,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:07,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505572050] [2022-12-13 16:46:07,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505572050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:46:07,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:46:07,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:46:07,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411852162] [2022-12-13 16:46:07,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:07,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 16:46:07,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:07,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 16:46:07,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:46:07,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 804 [2022-12-13 16:46:07,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 77 transitions, 864 flow. Second operand has 11 states, 11 states have (on average 316.09090909090907) internal successors, (3477), 11 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:07,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:46:07,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 804 [2022-12-13 16:46:07,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:46:08,130 INFO L130 PetriNetUnfolder]: 103/315 cut-off events. [2022-12-13 16:46:08,130 INFO L131 PetriNetUnfolder]: For 1847/1847 co-relation queries the response was YES. [2022-12-13 16:46:08,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1672 conditions, 315 events. 103/315 cut-off events. For 1847/1847 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1591 event pairs, 71 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 1626. Up to 269 conditions per place. [2022-12-13 16:46:08,132 INFO L137 encePairwiseOnDemand]: 797/804 looper letters, 77 selfloop transitions, 5 changer transitions 10/92 dead transitions. [2022-12-13 16:46:08,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 92 transitions, 1116 flow [2022-12-13 16:46:08,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:46:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:46:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2558 transitions. [2022-12-13 16:46:08,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3976990049751244 [2022-12-13 16:46:08,135 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2558 transitions. [2022-12-13 16:46:08,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2558 transitions. [2022-12-13 16:46:08,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:46:08,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2558 transitions. [2022-12-13 16:46:08,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 319.75) internal successors, (2558), 8 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:08,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:08,140 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:08,140 INFO L175 Difference]: Start difference. First operand has 98 places, 77 transitions, 864 flow. Second operand 8 states and 2558 transitions. [2022-12-13 16:46:08,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 92 transitions, 1116 flow [2022-12-13 16:46:08,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 92 transitions, 1092 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-12-13 16:46:08,146 INFO L231 Difference]: Finished difference. Result has 98 places, 74 transitions, 828 flow [2022-12-13 16:46:08,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=828, PETRI_PLACES=98, PETRI_TRANSITIONS=74} [2022-12-13 16:46:08,147 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 71 predicate places. [2022-12-13 16:46:08,147 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 74 transitions, 828 flow [2022-12-13 16:46:08,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 316.09090909090907) internal successors, (3477), 11 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:08,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:46:08,147 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:46:08,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:46:08,148 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:46:08,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:46:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash -672070248, now seen corresponding path program 8 times [2022-12-13 16:46:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:46:08,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547714803] [2022-12-13 16:46:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:46:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:46:08,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:08,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547714803] [2022-12-13 16:46:08,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547714803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:46:08,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:46:08,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:46:08,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873968134] [2022-12-13 16:46:08,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:08,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:46:08,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:08,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:46:08,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:46:08,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 804 [2022-12-13 16:46:08,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 74 transitions, 828 flow. Second operand has 5 states, 5 states have (on average 331.6) internal successors, (1658), 5 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:08,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:46:08,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 804 [2022-12-13 16:46:08,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:46:08,825 INFO L130 PetriNetUnfolder]: 96/305 cut-off events. [2022-12-13 16:46:08,825 INFO L131 PetriNetUnfolder]: For 1695/1695 co-relation queries the response was YES. [2022-12-13 16:46:08,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 305 events. 96/305 cut-off events. For 1695/1695 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1558 event pairs, 28 based on Foata normal form. 7/311 useless extension candidates. Maximal degree in co-relation 1566. Up to 123 conditions per place. [2022-12-13 16:46:08,827 INFO L137 encePairwiseOnDemand]: 800/804 looper letters, 36 selfloop transitions, 3 changer transitions 48/87 dead transitions. [2022-12-13 16:46:08,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 87 transitions, 1077 flow [2022-12-13 16:46:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:46:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:46:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1676 transitions. [2022-12-13 16:46:08,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41691542288557215 [2022-12-13 16:46:08,829 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1676 transitions. [2022-12-13 16:46:08,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1676 transitions. [2022-12-13 16:46:08,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:46:08,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1676 transitions. [2022-12-13 16:46:08,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 335.2) internal successors, (1676), 5 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:08,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 804.0) internal successors, (4824), 6 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:08,832 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 804.0) internal successors, (4824), 6 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:08,832 INFO L175 Difference]: Start difference. First operand has 98 places, 74 transitions, 828 flow. Second operand 5 states and 1676 transitions. [2022-12-13 16:46:08,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 87 transitions, 1077 flow [2022-12-13 16:46:08,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 1059 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-12-13 16:46:08,838 INFO L231 Difference]: Finished difference. Result has 94 places, 38 transitions, 294 flow [2022-12-13 16:46:08,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=94, PETRI_TRANSITIONS=38} [2022-12-13 16:46:08,838 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 67 predicate places. [2022-12-13 16:46:08,838 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 38 transitions, 294 flow [2022-12-13 16:46:08,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.6) internal successors, (1658), 5 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:08,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:46:08,839 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] [2022-12-13 16:46:08,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 16:46:08,839 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:46:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:46:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1700970536, now seen corresponding path program 1 times [2022-12-13 16:46:08,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:46:08,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598370083] [2022-12-13 16:46:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:08,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:46:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:46:09,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:09,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598370083] [2022-12-13 16:46:09,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598370083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:46:09,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:46:09,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:46:09,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53053118] [2022-12-13 16:46:09,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:09,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:46:09,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:09,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:46:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:46:09,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 804 [2022-12-13 16:46:09,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 38 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:09,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:46:09,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 804 [2022-12-13 16:46:09,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:46:09,379 INFO L130 PetriNetUnfolder]: 40/135 cut-off events. [2022-12-13 16:46:09,379 INFO L131 PetriNetUnfolder]: For 672/672 co-relation queries the response was YES. [2022-12-13 16:46:09,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 135 events. 40/135 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 433 event pairs, 14 based on Foata normal form. 3/137 useless extension candidates. Maximal degree in co-relation 638. Up to 77 conditions per place. [2022-12-13 16:46:09,379 INFO L137 encePairwiseOnDemand]: 798/804 looper letters, 26 selfloop transitions, 4 changer transitions 21/51 dead transitions. [2022-12-13 16:46:09,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 51 transitions, 468 flow [2022-12-13 16:46:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:46:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:46:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1959 transitions. [2022-12-13 16:46:09,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4060945273631841 [2022-12-13 16:46:09,382 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1959 transitions. [2022-12-13 16:46:09,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1959 transitions. [2022-12-13 16:46:09,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:46:09,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1959 transitions. [2022-12-13 16:46:09,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.5) internal successors, (1959), 6 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:09,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:09,386 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 804.0) internal successors, (5628), 7 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:09,386 INFO L175 Difference]: Start difference. First operand has 94 places, 38 transitions, 294 flow. Second operand 6 states and 1959 transitions. [2022-12-13 16:46:09,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 51 transitions, 468 flow [2022-12-13 16:46:09,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 352 flow, removed 15 selfloop flow, removed 27 redundant places. [2022-12-13 16:46:09,388 INFO L231 Difference]: Finished difference. Result has 60 places, 30 transitions, 154 flow [2022-12-13 16:46:09,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=60, PETRI_TRANSITIONS=30} [2022-12-13 16:46:09,388 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 33 predicate places. [2022-12-13 16:46:09,388 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 30 transitions, 154 flow [2022-12-13 16:46:09,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:09,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:46:09,389 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] [2022-12-13 16:46:09,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 16:46:09,389 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 16:46:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:46:09,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1003692376, now seen corresponding path program 2 times [2022-12-13 16:46:09,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:46:09,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090361324] [2022-12-13 16:46:09,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:09,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:46:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:46:09,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:09,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090361324] [2022-12-13 16:46:09,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090361324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:46:09,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:46:09,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:46:09,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867804663] [2022-12-13 16:46:09,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:09,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 16:46:09,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 16:46:09,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:46:10,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 804 [2022-12-13 16:46:10,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 30 transitions, 154 flow. Second operand has 11 states, 11 states have (on average 311.1818181818182) internal successors, (3423), 11 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:10,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:46:10,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 804 [2022-12-13 16:46:10,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:46:10,636 INFO L130 PetriNetUnfolder]: 9/37 cut-off events. [2022-12-13 16:46:10,636 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-13 16:46:10,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 37 events. 9/37 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 140. Up to 11 conditions per place. [2022-12-13 16:46:10,636 INFO L137 encePairwiseOnDemand]: 797/804 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2022-12-13 16:46:10,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 33 transitions, 225 flow [2022-12-13 16:46:10,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:46:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:46:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2501 transitions. [2022-12-13 16:46:10,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38883706467661694 [2022-12-13 16:46:10,638 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2501 transitions. [2022-12-13 16:46:10,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2501 transitions. [2022-12-13 16:46:10,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:46:10,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2501 transitions. [2022-12-13 16:46:10,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 312.625) internal successors, (2501), 8 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:10,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:10,643 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 804.0) internal successors, (7236), 9 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:10,644 INFO L175 Difference]: Start difference. First operand has 60 places, 30 transitions, 154 flow. Second operand 8 states and 2501 transitions. [2022-12-13 16:46:10,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 33 transitions, 225 flow [2022-12-13 16:46:10,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 33 transitions, 177 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-12-13 16:46:10,644 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2022-12-13 16:46:10,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=804, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2022-12-13 16:46:10,645 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2022-12-13 16:46:10,645 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2022-12-13 16:46:10,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 311.1818181818182) internal successors, (3423), 11 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:46:10,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 16:46:10,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 16:46:10,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 16:46:10,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 16:46:10,648 INFO L445 BasicCegarLoop]: Path program histogram: [8, 8, 2, 1, 1, 1, 1, 1] [2022-12-13 16:46:10,650 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 16:46:10,650 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 16:46:10,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 04:46:10 BasicIcfg [2022-12-13 16:46:10,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 16:46:10,652 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 16:46:10,652 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 16:46:10,652 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 16:46:10,653 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:45:34" (3/4) ... [2022-12-13 16:46:10,654 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 16:46:10,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 16:46:10,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 16:46:10,663 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2022-12-13 16:46:10,663 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 16:46:10,663 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 16:46:10,663 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 16:46:10,692 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 16:46:10,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 16:46:10,692 INFO L158 Benchmark]: Toolchain (without parser) took 37168.45ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 108.1MB in the beginning and 141.9MB in the end (delta: -33.8MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. [2022-12-13 16:46:10,692 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:46:10,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.51ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 95.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 16:46:10,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.18ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 92.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:46:10,693 INFO L158 Benchmark]: Boogie Preprocessor took 23.81ms. Allocated memory is still 142.6MB. Free memory was 92.8MB in the beginning and 90.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:46:10,693 INFO L158 Benchmark]: RCFGBuilder took 487.51ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 64.9MB in the end (delta: 25.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 16:46:10,693 INFO L158 Benchmark]: TraceAbstraction took 36398.07ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 64.5MB in the beginning and 147.1MB in the end (delta: -82.7MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2022-12-13 16:46:10,694 INFO L158 Benchmark]: Witness Printer took 39.75ms. Allocated memory is still 268.4MB. Free memory was 147.1MB in the beginning and 141.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 16:46:10,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.51ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 95.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.18ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 92.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.81ms. Allocated memory is still 142.6MB. Free memory was 92.8MB in the beginning and 90.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.51ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 64.9MB in the end (delta: 25.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 36398.07ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 64.5MB in the beginning and 147.1MB in the end (delta: -82.7MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. * Witness Printer took 39.75ms. Allocated memory is still 268.4MB. Free memory was 147.1MB in the beginning and 141.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.1s, 342 PlacesBefore, 27 PlacesAfterwards, 363 TransitionsBefore, 26 TransitionsAfterwards, 7452 CoEnabledTransitionPairs, 8 FixpointIterations, 217 TrivialSequentialCompositions, 105 ConcurrentSequentialCompositions, 59 TrivialYvCompositions, 27 ConcurrentYvCompositions, 22 ChoiceCompositions, 430 TotalNumberOfCompositions, 7782 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7014, independent: 6918, independent conditional: 0, independent unconditional: 6918, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4318, independent: 4292, independent conditional: 0, independent unconditional: 4292, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7014, independent: 2626, independent conditional: 0, independent unconditional: 2626, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 4318, unknown conditional: 0, unknown unconditional: 4318] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 451 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 36.3s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7444 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5817 mSDsluCounter, 9623 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9279 mSDsCounter, 143 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16888 IncrementalHoareTripleChecker+Invalid, 17031 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 143 mSolverCounterUnsat, 344 mSDtfsCounter, 16888 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=955occurred in iteration=16, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 514 ConstructedInterpolants, 0 QuantifiedInterpolants, 7808 SizeOfPredicates, 4 NumberOfNonLiveVariables, 302 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 24 InterpolantComputations, 23 PerfectInterpolantSequences, 80/81 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 16:46:10,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7edf5de4-b896-4344-b3c5-11d2bd8bb9cc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE