./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.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_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/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_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/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_8714d556-2217-4676-953d-8bfbad2b77d7/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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- 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 21:57:25,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:57:25,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:57:25,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:57:25,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:57:25,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:57:25,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:57:25,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:57:25,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:57:25,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:57:25,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:57:25,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:57:25,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:57:25,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:57:25,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:57:25,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:57:25,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:57:25,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:57:25,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:57:25,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:57:25,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:57:25,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:57:25,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:57:25,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:57:25,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:57:25,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:57:25,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:57:25,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:57:25,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:57:25,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:57:25,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:57:25,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:57:25,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:57:25,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:57:25,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:57:25,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:57:25,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:57:25,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:57:25,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:57:25,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:57:25,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:57:25,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:57:25,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:57:25,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:57:25,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:57:25,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:57:25,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:57:25,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:57:25,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:57:25,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:57:25,908 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:57:25,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:57:25,909 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:57:25,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:57:25,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:57:25,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:57:25,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:57:25,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:57:25,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:57:25,910 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:57:25,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:57:25,910 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:57:25,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:57:25,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:57:25,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:57:25,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:57:25,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:57:25,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:57:25,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:57:25,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:57:25,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:57:25,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:57:25,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:57:25,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:57:25,913 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:57:25,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:57:25,913 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:57:25,913 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_8714d556-2217-4676-953d-8bfbad2b77d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-12-13 21:57:26,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:57:26,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:57:26,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:57:26,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:57:26,119 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:57:26,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-12-13 21:57:28,695 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:57:28,868 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:57:28,869 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-12-13 21:57:28,877 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/data/6f7c4f50f/ba58ac36659d44b9ba802ad4da92a55c/FLAGbb7e77968 [2022-12-13 21:57:29,265 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/data/6f7c4f50f/ba58ac36659d44b9ba802ad4da92a55c [2022-12-13 21:57:29,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:57:29,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:57:29,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:57:29,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:57:29,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:57:29,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448e08fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29, skipping insertion in model container [2022-12-13 21:57:29,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:57:29,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:57:29,470 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_8714d556-2217-4676-953d-8bfbad2b77d7/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-12-13 21:57:29,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:57:29,493 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:57:29,520 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_8714d556-2217-4676-953d-8bfbad2b77d7/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-12-13 21:57:29,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:57:29,541 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:57:29,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29 WrapperNode [2022-12-13 21:57:29,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:57:29,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:57:29,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:57:29,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:57:29,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,593 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-12-13 21:57:29,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:57:29,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:57:29,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:57:29,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:57:29,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,633 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:57:29,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:57:29,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:57:29,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:57:29,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (1/1) ... [2022-12-13 21:57:29,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:57:29,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:57:29,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:57:29,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:57:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:57:29,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:57:29,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 21:57:29,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 21:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:57:29,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:57:29,699 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 21:57:29,781 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:57:29,782 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:57:30,258 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:57:30,272 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:57:30,272 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 21:57:30,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:57:30 BoogieIcfgContainer [2022-12-13 21:57:30,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:57:30,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:57:30,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:57:30,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:57:30,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:57:29" (1/3) ... [2022-12-13 21:57:30,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fedacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:57:30, skipping insertion in model container [2022-12-13 21:57:30,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:57:29" (2/3) ... [2022-12-13 21:57:30,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fedacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:57:30, skipping insertion in model container [2022-12-13 21:57:30,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:57:30" (3/3) ... [2022-12-13 21:57:30,284 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-12-13 21:57:30,291 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:57:30,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:57:30,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:57:30,300 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:57:30,382 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 21:57:30,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 544 transitions, 1112 flow [2022-12-13 21:57:30,585 INFO L130 PetriNetUnfolder]: 41/541 cut-off events. [2022-12-13 21:57:30,585 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:57:30,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 541 events. 41/541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 691 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 459. Up to 2 conditions per place. [2022-12-13 21:57:30,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 544 transitions, 1112 flow [2022-12-13 21:57:30,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 499 places, 530 transitions, 1078 flow [2022-12-13 21:57:30,604 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:57:30,614 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 499 places, 530 transitions, 1078 flow [2022-12-13 21:57:30,616 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 499 places, 530 transitions, 1078 flow [2022-12-13 21:57:30,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 499 places, 530 transitions, 1078 flow [2022-12-13 21:57:30,715 INFO L130 PetriNetUnfolder]: 41/530 cut-off events. [2022-12-13 21:57:30,716 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:57:30,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 530 events. 41/530 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 692 event pairs, 0 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 459. Up to 2 conditions per place. [2022-12-13 21:57:30,727 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2022-12-13 21:57:46,048 INFO L134 LiptonReduction]: Checked pairs total: 23011 [2022-12-13 21:57:46,048 INFO L136 LiptonReduction]: Total number of compositions: 617 [2022-12-13 21:57:46,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:57:46,063 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;@76eb1ff1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:57:46,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 21:57:46,069 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2022-12-13 21:57:46,069 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:57:46,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:46,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:46,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:46,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1258022810, now seen corresponding path program 1 times [2022-12-13 21:57:46,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:46,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108184553] [2022-12-13 21:57:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:46,374 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 21:57:46,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:46,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108184553] [2022-12-13 21:57:46,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108184553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:46,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:46,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:57:46,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819866537] [2022-12-13 21:57:46,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:46,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:57:46,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:46,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:57:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:57:46,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 1161 [2022-12-13 21:57:46,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 510.3333333333333) internal successors, (1531), 3 states have internal predecessors, (1531), 0 states have call successors, (0), 0 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 21:57:46,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:46,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 1161 [2022-12-13 21:57:46,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:46,677 INFO L130 PetriNetUnfolder]: 835/1228 cut-off events. [2022-12-13 21:57:46,678 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-12-13 21:57:46,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1228 events. 835/1228 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4549 event pairs, 477 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 2392. Up to 913 conditions per place. [2022-12-13 21:57:46,683 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2022-12-13 21:57:46,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 252 flow [2022-12-13 21:57:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:57:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:57:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1561 transitions. [2022-12-13 21:57:46,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4481768590295722 [2022-12-13 21:57:46,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1561 transitions. [2022-12-13 21:57:46,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1561 transitions. [2022-12-13 21:57:46,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:46,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1561 transitions. [2022-12-13 21:57:46,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 520.3333333333334) internal successors, (1561), 3 states have internal predecessors, (1561), 0 states have call successors, (0), 0 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 21:57:46,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 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 21:57:46,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 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 21:57:46,727 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 3 states and 1561 transitions. [2022-12-13 21:57:46,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 252 flow [2022-12-13 21:57:46,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 21:57:46,733 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 108 flow [2022-12-13 21:57:46,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2022-12-13 21:57:46,737 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2022-12-13 21:57:46,737 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 108 flow [2022-12-13 21:57:46,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 510.3333333333333) internal successors, (1531), 3 states have internal predecessors, (1531), 0 states have call successors, (0), 0 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 21:57:46,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:46,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:46,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:57:46,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1260649244, now seen corresponding path program 1 times [2022-12-13 21:57:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:46,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639596771] [2022-12-13 21:57:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:46,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:46,827 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 21:57:46,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:46,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639596771] [2022-12-13 21:57:46,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639596771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:46,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:46,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:57:46,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043377643] [2022-12-13 21:57:46,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:46,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:57:46,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:46,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:57:46,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:57:46,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 1161 [2022-12-13 21:57:46,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 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 21:57:46,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:46,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 1161 [2022-12-13 21:57:46,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:47,111 INFO L130 PetriNetUnfolder]: 943/1388 cut-off events. [2022-12-13 21:57:47,112 INFO L131 PetriNetUnfolder]: For 517/517 co-relation queries the response was YES. [2022-12-13 21:57:47,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 1388 events. 943/1388 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5055 event pairs, 541 based on Foata normal form. 0/1278 useless extension candidates. Maximal degree in co-relation 1664. Up to 1017 conditions per place. [2022-12-13 21:57:47,118 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 56 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2022-12-13 21:57:47,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 276 flow [2022-12-13 21:57:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:57:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:57:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1561 transitions. [2022-12-13 21:57:47,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4481768590295722 [2022-12-13 21:57:47,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1561 transitions. [2022-12-13 21:57:47,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1561 transitions. [2022-12-13 21:57:47,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:47,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1561 transitions. [2022-12-13 21:57:47,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 520.3333333333334) internal successors, (1561), 3 states have internal predecessors, (1561), 0 states have call successors, (0), 0 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 21:57:47,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 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 21:57:47,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 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 21:57:47,130 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 108 flow. Second operand 3 states and 1561 transitions. [2022-12-13 21:57:47,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 276 flow [2022-12-13 21:57:47,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:57:47,132 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 120 flow [2022-12-13 21:57:47,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2022-12-13 21:57:47,133 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2022-12-13 21:57:47,133 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 120 flow [2022-12-13 21:57:47,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 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 21:57:47,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:47,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:47,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:57:47,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:47,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:47,135 INFO L85 PathProgramCache]: Analyzing trace with hash -451135943, now seen corresponding path program 1 times [2022-12-13 21:57:47,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:47,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843647445] [2022-12-13 21:57:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:47,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:47,312 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 21:57:47,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:47,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843647445] [2022-12-13 21:57:47,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843647445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:47,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:47,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:57:47,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101336388] [2022-12-13 21:57:47,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:47,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:57:47,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:47,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:57:47,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:57:47,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1161 [2022-12-13 21:57:47,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 506.0) internal successors, (1518), 3 states have internal predecessors, (1518), 0 states have call successors, (0), 0 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 21:57:47,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:47,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1161 [2022-12-13 21:57:47,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:47,576 INFO L130 PetriNetUnfolder]: 943/1389 cut-off events. [2022-12-13 21:57:47,576 INFO L131 PetriNetUnfolder]: For 387/387 co-relation queries the response was YES. [2022-12-13 21:57:47,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 1389 events. 943/1389 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5042 event pairs, 733 based on Foata normal form. 0/1333 useless extension candidates. Maximal degree in co-relation 1959. Up to 1389 conditions per place. [2022-12-13 21:57:47,581 INFO L137 encePairwiseOnDemand]: 1158/1161 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-13 21:57:47,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 212 flow [2022-12-13 21:57:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:57:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:57:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1532 transitions. [2022-12-13 21:57:47,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4398507034165949 [2022-12-13 21:57:47,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1532 transitions. [2022-12-13 21:57:47,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1532 transitions. [2022-12-13 21:57:47,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:47,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1532 transitions. [2022-12-13 21:57:47,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 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 21:57:47,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 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 21:57:47,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 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 21:57:47,592 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 120 flow. Second operand 3 states and 1532 transitions. [2022-12-13 21:57:47,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 212 flow [2022-12-13 21:57:47,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:57:47,596 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 126 flow [2022-12-13 21:57:47,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2022-12-13 21:57:47,597 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2022-12-13 21:57:47,597 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 126 flow [2022-12-13 21:57:47,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 506.0) internal successors, (1518), 3 states have internal predecessors, (1518), 0 states have call successors, (0), 0 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 21:57:47,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:47,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:47,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:57:47,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:47,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:47,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1995423241, now seen corresponding path program 1 times [2022-12-13 21:57:47,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:47,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28441305] [2022-12-13 21:57:47,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:47,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:47,777 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 21:57:47,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:47,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28441305] [2022-12-13 21:57:47,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28441305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:47,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:47,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:57:47,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228919882] [2022-12-13 21:57:47,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:47,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:57:47,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:47,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:57:47,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:57:47,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1161 [2022-12-13 21:57:47,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 0 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 21:57:47,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:47,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1161 [2022-12-13 21:57:47,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:48,081 INFO L130 PetriNetUnfolder]: 943/1390 cut-off events. [2022-12-13 21:57:48,081 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2022-12-13 21:57:48,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 1390 events. 943/1390 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 3361. Up to 1389 conditions per place. [2022-12-13 21:57:48,087 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2022-12-13 21:57:48,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 220 flow [2022-12-13 21:57:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:57:48,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:57:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-12-13 21:57:48,090 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43496985357450474 [2022-12-13 21:57:48,090 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-12-13 21:57:48,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-12-13 21:57:48,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:48,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-12-13 21:57:48,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 21:57:48,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:48,100 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:48,100 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 126 flow. Second operand 4 states and 2020 transitions. [2022-12-13 21:57:48,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 220 flow [2022-12-13 21:57:48,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 216 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 21:57:48,102 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 136 flow [2022-12-13 21:57:48,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2022-12-13 21:57:48,103 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2022-12-13 21:57:48,103 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 136 flow [2022-12-13 21:57:48,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 0 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 21:57:48,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:48,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:48,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:57:48,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1305054406, now seen corresponding path program 1 times [2022-12-13 21:57:48,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:48,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955035230] [2022-12-13 21:57:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:48,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:48,218 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 21:57:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:48,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955035230] [2022-12-13 21:57:48,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955035230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:48,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:48,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:57:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629793471] [2022-12-13 21:57:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:48,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:57:48,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:57:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:57:48,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1161 [2022-12-13 21:57:48,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 21:57:48,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:48,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1161 [2022-12-13 21:57:48,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:48,536 INFO L130 PetriNetUnfolder]: 943/1391 cut-off events. [2022-12-13 21:57:48,537 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-12-13 21:57:48,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 1391 events. 943/1391 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 3361. Up to 1389 conditions per place. [2022-12-13 21:57:48,541 INFO L137 encePairwiseOnDemand]: 1156/1161 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2022-12-13 21:57:48,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 232 flow [2022-12-13 21:57:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:57:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:57:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2021 transitions. [2022-12-13 21:57:48,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2022-12-13 21:57:48,548 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2021 transitions. [2022-12-13 21:57:48,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2021 transitions. [2022-12-13 21:57:48,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:48,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2021 transitions. [2022-12-13 21:57:48,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.25) internal successors, (2021), 4 states have internal predecessors, (2021), 0 states have call successors, (0), 0 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 21:57:48,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:48,557 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:48,557 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 136 flow. Second operand 4 states and 2021 transitions. [2022-12-13 21:57:48,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 232 flow [2022-12-13 21:57:48,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 226 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:57:48,559 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 148 flow [2022-12-13 21:57:48,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2022-12-13 21:57:48,560 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2022-12-13 21:57:48,560 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 148 flow [2022-12-13 21:57:48,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 21:57:48,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:48,561 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:48,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:57:48,562 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:48,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:48,562 INFO L85 PathProgramCache]: Analyzing trace with hash -859244272, now seen corresponding path program 1 times [2022-12-13 21:57:48,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:48,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286220109] [2022-12-13 21:57:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:48,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:48,675 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 21:57:48,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:48,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286220109] [2022-12-13 21:57:48,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286220109] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:48,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:48,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:57:48,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231874471] [2022-12-13 21:57:48,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:48,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:57:48,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:48,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:57:48,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:57:48,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1161 [2022-12-13 21:57:48,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 502.25) internal successors, (2009), 4 states have internal predecessors, (2009), 0 states have call successors, (0), 0 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 21:57:48,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:48,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1161 [2022-12-13 21:57:48,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:48,961 INFO L130 PetriNetUnfolder]: 943/1392 cut-off events. [2022-12-13 21:57:48,961 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-12-13 21:57:48,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 1392 events. 943/1392 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1286 useless extension candidates. Maximal degree in co-relation 3366. Up to 1391 conditions per place. [2022-12-13 21:57:48,965 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2022-12-13 21:57:48,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 246 flow [2022-12-13 21:57:48,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:57:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:57:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-12-13 21:57:48,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43496985357450474 [2022-12-13 21:57:48,968 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-12-13 21:57:48,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-12-13 21:57:48,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:48,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-12-13 21:57:48,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 21:57:48,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:48,977 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:48,977 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 148 flow. Second operand 4 states and 2020 transitions. [2022-12-13 21:57:48,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 246 flow [2022-12-13 21:57:48,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:57:48,980 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 158 flow [2022-12-13 21:57:48,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2022-12-13 21:57:48,981 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2022-12-13 21:57:48,981 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 158 flow [2022-12-13 21:57:48,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.25) internal successors, (2009), 4 states have internal predecessors, (2009), 0 states have call successors, (0), 0 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 21:57:48,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:48,982 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:48,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:57:48,982 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:48,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:48,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1741998769, now seen corresponding path program 1 times [2022-12-13 21:57:48,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:48,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601732686] [2022-12-13 21:57:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:48,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:49,102 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 21:57:49,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:49,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601732686] [2022-12-13 21:57:49,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601732686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:49,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:49,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:57:49,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469198352] [2022-12-13 21:57:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:49,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:57:49,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:57:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:57:49,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1161 [2022-12-13 21:57:49,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 502.5) internal successors, (2010), 4 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 21:57:49,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:49,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1161 [2022-12-13 21:57:49,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:49,381 INFO L130 PetriNetUnfolder]: 943/1393 cut-off events. [2022-12-13 21:57:49,381 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-12-13 21:57:49,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 1393 events. 943/1393 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 3372. Up to 1392 conditions per place. [2022-12-13 21:57:49,386 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 46 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2022-12-13 21:57:49,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 258 flow [2022-12-13 21:57:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:57:49,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:57:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-12-13 21:57:49,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43496985357450474 [2022-12-13 21:57:49,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-12-13 21:57:49,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-12-13 21:57:49,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:49,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-12-13 21:57:49,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 21:57:49,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:49,396 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:49,396 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 158 flow. Second operand 4 states and 2020 transitions. [2022-12-13 21:57:49,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 258 flow [2022-12-13 21:57:49,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:57:49,398 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 166 flow [2022-12-13 21:57:49,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2022-12-13 21:57:49,399 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2022-12-13 21:57:49,399 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 166 flow [2022-12-13 21:57:49,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.5) internal successors, (2010), 4 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 21:57:49,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:49,400 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:49,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:57:49,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:49,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:49,401 INFO L85 PathProgramCache]: Analyzing trace with hash -665173547, now seen corresponding path program 1 times [2022-12-13 21:57:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:49,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670022294] [2022-12-13 21:57:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:49,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 21:57:49,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:49,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670022294] [2022-12-13 21:57:49,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670022294] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:49,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:49,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:57:49,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339633959] [2022-12-13 21:57:49,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:49,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:57:49,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:49,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:57:49,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:57:49,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1161 [2022-12-13 21:57:49,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 502.75) internal successors, (2011), 4 states have internal predecessors, (2011), 0 states have call successors, (0), 0 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 21:57:49,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:49,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1161 [2022-12-13 21:57:49,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:49,812 INFO L130 PetriNetUnfolder]: 943/1394 cut-off events. [2022-12-13 21:57:49,812 INFO L131 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2022-12-13 21:57:49,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3402 conditions, 1394 events. 943/1394 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 3377. Up to 1393 conditions per place. [2022-12-13 21:57:49,817 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 47 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2022-12-13 21:57:49,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 268 flow [2022-12-13 21:57:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:57:49,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:57:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-12-13 21:57:49,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43496985357450474 [2022-12-13 21:57:49,824 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-12-13 21:57:49,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-12-13 21:57:49,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:49,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-12-13 21:57:49,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 21:57:49,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:49,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:49,832 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 166 flow. Second operand 4 states and 2020 transitions. [2022-12-13 21:57:49,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 268 flow [2022-12-13 21:57:49,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 262 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:57:49,834 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 174 flow [2022-12-13 21:57:49,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2022-12-13 21:57:49,835 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2022-12-13 21:57:49,835 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 174 flow [2022-12-13 21:57:49,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.75) internal successors, (2011), 4 states have internal predecessors, (2011), 0 states have call successors, (0), 0 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 21:57:49,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:49,836 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:49,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:57:49,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash -756070603, now seen corresponding path program 1 times [2022-12-13 21:57:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:49,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592686487] [2022-12-13 21:57:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:57:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592686487] [2022-12-13 21:57:50,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592686487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:50,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:50,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:57:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192873989] [2022-12-13 21:57:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:50,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:57:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:57:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:57:50,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 1161 [2022-12-13 21:57:50,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 485.14285714285717) internal successors, (3396), 7 states have internal predecessors, (3396), 0 states have call successors, (0), 0 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 21:57:50,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:50,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 1161 [2022-12-13 21:57:50,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:50,965 INFO L130 PetriNetUnfolder]: 1350/2048 cut-off events. [2022-12-13 21:57:50,965 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2022-12-13 21:57:50,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5004 conditions, 2048 events. 1350/2048 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8848 event pairs, 467 based on Foata normal form. 22/1933 useless extension candidates. Maximal degree in co-relation 4978. Up to 976 conditions per place. [2022-12-13 21:57:50,971 INFO L137 encePairwiseOnDemand]: 1152/1161 looper letters, 97 selfloop transitions, 11 changer transitions 1/109 dead transitions. [2022-12-13 21:57:50,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 109 transitions, 557 flow [2022-12-13 21:57:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:57:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:57:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3460 transitions. [2022-12-13 21:57:50,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4257413559739141 [2022-12-13 21:57:50,980 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3460 transitions. [2022-12-13 21:57:50,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3460 transitions. [2022-12-13 21:57:50,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:50,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3460 transitions. [2022-12-13 21:57:50,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 494.2857142857143) internal successors, (3460), 7 states have internal predecessors, (3460), 0 states have call successors, (0), 0 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 21:57:50,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 21:57:51,001 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 21:57:51,001 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 174 flow. Second operand 7 states and 3460 transitions. [2022-12-13 21:57:51,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 109 transitions, 557 flow [2022-12-13 21:57:51,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 109 transitions, 551 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:57:51,004 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 241 flow [2022-12-13 21:57:51,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2022-12-13 21:57:51,005 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2022-12-13 21:57:51,005 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 241 flow [2022-12-13 21:57:51,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 485.14285714285717) internal successors, (3396), 7 states have internal predecessors, (3396), 0 states have call successors, (0), 0 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 21:57:51,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:51,006 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:51,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:57:51,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:51,007 INFO L85 PathProgramCache]: Analyzing trace with hash 865891991, now seen corresponding path program 2 times [2022-12-13 21:57:51,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:51,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468683327] [2022-12-13 21:57:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:51,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:57:51,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:51,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468683327] [2022-12-13 21:57:51,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468683327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:51,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:51,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:57:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578041353] [2022-12-13 21:57:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:51,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:57:51,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:51,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:57:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:57:51,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1161 [2022-12-13 21:57:51,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 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 21:57:51,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:51,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1161 [2022-12-13 21:57:51,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:51,897 INFO L130 PetriNetUnfolder]: 2068/3146 cut-off events. [2022-12-13 21:57:51,897 INFO L131 PetriNetUnfolder]: For 2389/2389 co-relation queries the response was YES. [2022-12-13 21:57:51,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9079 conditions, 3146 events. 2068/3146 cut-off events. For 2389/2389 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14760 event pairs, 798 based on Foata normal form. 18/3066 useless extension candidates. Maximal degree in co-relation 9049. Up to 1745 conditions per place. [2022-12-13 21:57:51,917 INFO L137 encePairwiseOnDemand]: 1154/1161 looper letters, 89 selfloop transitions, 11 changer transitions 0/100 dead transitions. [2022-12-13 21:57:51,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 100 transitions, 611 flow [2022-12-13 21:57:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:57:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:57:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2032 transitions. [2022-12-13 21:57:51,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43755383290267014 [2022-12-13 21:57:51,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2032 transitions. [2022-12-13 21:57:51,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2032 transitions. [2022-12-13 21:57:51,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:51,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2032 transitions. [2022-12-13 21:57:51,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 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 21:57:51,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:51,931 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 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 21:57:51,931 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 241 flow. Second operand 4 states and 2032 transitions. [2022-12-13 21:57:51,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 100 transitions, 611 flow [2022-12-13 21:57:51,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 604 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 21:57:51,941 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 340 flow [2022-12-13 21:57:51,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2022-12-13 21:57:51,942 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2022-12-13 21:57:51,942 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 340 flow [2022-12-13 21:57:51,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 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 21:57:51,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:51,943 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:51,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:57:51,944 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:51,944 INFO L85 PathProgramCache]: Analyzing trace with hash -952718077, now seen corresponding path program 1 times [2022-12-13 21:57:51,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:51,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117680505] [2022-12-13 21:57:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:51,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:57:53,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:53,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117680505] [2022-12-13 21:57:53,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117680505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:53,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:53,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:57:53,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556972649] [2022-12-13 21:57:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:53,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:57:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:53,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:57:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:57:53,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 21:57:53,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 21:57:53,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:53,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 21:57:53,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:57:54,855 INFO L130 PetriNetUnfolder]: 2671/4262 cut-off events. [2022-12-13 21:57:54,855 INFO L131 PetriNetUnfolder]: For 8195/8195 co-relation queries the response was YES. [2022-12-13 21:57:54,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14010 conditions, 4262 events. 2671/4262 cut-off events. For 8195/8195 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 23400 event pairs, 1224 based on Foata normal form. 4/4168 useless extension candidates. Maximal degree in co-relation 13979. Up to 2747 conditions per place. [2022-12-13 21:57:54,869 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 128 selfloop transitions, 14 changer transitions 21/163 dead transitions. [2022-12-13 21:57:54,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 163 transitions, 1296 flow [2022-12-13 21:57:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:57:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:57:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3421 transitions. [2022-12-13 21:57:54,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.420942537221607 [2022-12-13 21:57:54,873 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3421 transitions. [2022-12-13 21:57:54,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3421 transitions. [2022-12-13 21:57:54,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:57:54,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3421 transitions. [2022-12-13 21:57:54,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 488.7142857142857) internal successors, (3421), 7 states have internal predecessors, (3421), 0 states have call successors, (0), 0 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 21:57:54,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 21:57:54,884 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 21:57:54,885 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 340 flow. Second operand 7 states and 3421 transitions. [2022-12-13 21:57:54,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 163 transitions, 1296 flow [2022-12-13 21:57:54,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 163 transitions, 1269 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:57:54,898 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 471 flow [2022-12-13 21:57:54,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2022-12-13 21:57:54,898 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2022-12-13 21:57:54,898 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 471 flow [2022-12-13 21:57:54,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 21:57:54,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:57:54,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:54,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:57:54,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:57:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1475132879, now seen corresponding path program 1 times [2022-12-13 21:57:54,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:54,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554125947] [2022-12-13 21:57:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:54,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:57:56,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:56,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554125947] [2022-12-13 21:57:56,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554125947] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:56,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:56,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 21:57:56,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065898858] [2022-12-13 21:57:56,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:56,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 21:57:56,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:56,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 21:57:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-12-13 21:57:58,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 1161 [2022-12-13 21:57:59,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 471 flow. Second operand has 15 states, 15 states have (on average 441.4) internal successors, (6621), 15 states have internal predecessors, (6621), 0 states have call successors, (0), 0 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 21:57:59,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:57:59,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 1161 [2022-12-13 21:57:59,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:58:02,893 INFO L130 PetriNetUnfolder]: 8669/13971 cut-off events. [2022-12-13 21:58:02,893 INFO L131 PetriNetUnfolder]: For 44460/44460 co-relation queries the response was YES. [2022-12-13 21:58:02,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54299 conditions, 13971 events. 8669/13971 cut-off events. For 44460/44460 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 98577 event pairs, 1360 based on Foata normal form. 1/13971 useless extension candidates. Maximal degree in co-relation 54263. Up to 3407 conditions per place. [2022-12-13 21:58:02,950 INFO L137 encePairwiseOnDemand]: 1139/1161 looper letters, 289 selfloop transitions, 150 changer transitions 7/446 dead transitions. [2022-12-13 21:58:02,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 446 transitions, 3897 flow [2022-12-13 21:58:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 21:58:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 21:58:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9487 transitions. [2022-12-13 21:58:02,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3891144743857922 [2022-12-13 21:58:02,960 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9487 transitions. [2022-12-13 21:58:02,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9487 transitions. [2022-12-13 21:58:02,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:58:02,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9487 transitions. [2022-12-13 21:58:02,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 451.76190476190476) internal successors, (9487), 21 states have internal predecessors, (9487), 0 states have call successors, (0), 0 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 21:58:03,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1161.0) internal successors, (25542), 22 states have internal predecessors, (25542), 0 states have call successors, (0), 0 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 21:58:03,003 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1161.0) internal successors, (25542), 22 states have internal predecessors, (25542), 0 states have call successors, (0), 0 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 21:58:03,003 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 471 flow. Second operand 21 states and 9487 transitions. [2022-12-13 21:58:03,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 446 transitions, 3897 flow [2022-12-13 21:58:03,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 446 transitions, 3781 flow, removed 58 selfloop flow, removed 2 redundant places. [2022-12-13 21:58:03,325 INFO L231 Difference]: Finished difference. Result has 109 places, 234 transitions, 2594 flow [2022-12-13 21:58:03,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2594, PETRI_PLACES=109, PETRI_TRANSITIONS=234} [2022-12-13 21:58:03,326 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2022-12-13 21:58:03,326 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 234 transitions, 2594 flow [2022-12-13 21:58:03,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 441.4) internal successors, (6621), 15 states have internal predecessors, (6621), 0 states have call successors, (0), 0 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 21:58:03,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:58:03,327 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:03,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:58:03,327 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:58:03,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1486513473, now seen corresponding path program 2 times [2022-12-13 21:58:03,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:03,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845403332] [2022-12-13 21:58:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:03,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:58:04,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:04,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845403332] [2022-12-13 21:58:04,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845403332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:58:04,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:58:04,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 21:58:04,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225957181] [2022-12-13 21:58:04,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:58:04,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:58:04,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:04,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:58:04,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:58:07,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 1161 [2022-12-13 21:58:07,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 234 transitions, 2594 flow. Second operand has 14 states, 14 states have (on average 441.57142857142856) internal successors, (6182), 14 states have internal predecessors, (6182), 0 states have call successors, (0), 0 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 21:58:07,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:58:07,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 1161 [2022-12-13 21:58:07,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:58:14,442 INFO L130 PetriNetUnfolder]: 14789/25020 cut-off events. [2022-12-13 21:58:14,442 INFO L131 PetriNetUnfolder]: For 163684/163684 co-relation queries the response was YES. [2022-12-13 21:58:14,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129265 conditions, 25020 events. 14789/25020 cut-off events. For 163684/163684 co-relation queries the response was YES. Maximal size of possible extension queue 1529. Compared 205508 event pairs, 2038 based on Foata normal form. 1/25020 useless extension candidates. Maximal degree in co-relation 129211. Up to 8411 conditions per place. [2022-12-13 21:58:14,591 INFO L137 encePairwiseOnDemand]: 1141/1161 looper letters, 381 selfloop transitions, 520 changer transitions 7/908 dead transitions. [2022-12-13 21:58:14,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 908 transitions, 11590 flow [2022-12-13 21:58:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 21:58:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 21:58:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 10343 transitions. [2022-12-13 21:58:14,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3873347563944126 [2022-12-13 21:58:14,602 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 10343 transitions. [2022-12-13 21:58:14,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 10343 transitions. [2022-12-13 21:58:14,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:58:14,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 10343 transitions. [2022-12-13 21:58:14,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 449.69565217391306) internal successors, (10343), 23 states have internal predecessors, (10343), 0 states have call successors, (0), 0 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 21:58:14,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 1161.0) internal successors, (27864), 24 states have internal predecessors, (27864), 0 states have call successors, (0), 0 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 21:58:14,630 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 1161.0) internal successors, (27864), 24 states have internal predecessors, (27864), 0 states have call successors, (0), 0 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 21:58:14,630 INFO L175 Difference]: Start difference. First operand has 109 places, 234 transitions, 2594 flow. Second operand 23 states and 10343 transitions. [2022-12-13 21:58:14,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 908 transitions, 11590 flow [2022-12-13 21:58:16,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 908 transitions, 11421 flow, removed 82 selfloop flow, removed 4 redundant places. [2022-12-13 21:58:16,266 INFO L231 Difference]: Finished difference. Result has 145 places, 698 transitions, 10604 flow [2022-12-13 21:58:16,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=10604, PETRI_PLACES=145, PETRI_TRANSITIONS=698} [2022-12-13 21:58:16,267 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2022-12-13 21:58:16,267 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 698 transitions, 10604 flow [2022-12-13 21:58:16,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 441.57142857142856) internal successors, (6182), 14 states have internal predecessors, (6182), 0 states have call successors, (0), 0 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 21:58:16,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:58:16,268 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:16,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:58:16,268 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:58:16,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:16,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1439740267, now seen corresponding path program 3 times [2022-12-13 21:58:16,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:16,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521501225] [2022-12-13 21:58:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:16,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:58:17,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:17,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521501225] [2022-12-13 21:58:17,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521501225] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:58:17,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:58:17,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:58:17,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696471198] [2022-12-13 21:58:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:58:17,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:58:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:17,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:58:17,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:58:18,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1161 [2022-12-13 21:58:18,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 698 transitions, 10604 flow. Second operand has 9 states, 9 states have (on average 470.0) internal successors, (4230), 9 states have internal predecessors, (4230), 0 states have call successors, (0), 0 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 21:58:18,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:58:18,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1161 [2022-12-13 21:58:18,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:58:26,790 INFO L130 PetriNetUnfolder]: 16670/28629 cut-off events. [2022-12-13 21:58:26,790 INFO L131 PetriNetUnfolder]: For 296813/296813 co-relation queries the response was YES. [2022-12-13 21:58:26,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179220 conditions, 28629 events. 16670/28629 cut-off events. For 296813/296813 co-relation queries the response was YES. Maximal size of possible extension queue 1739. Compared 243689 event pairs, 3147 based on Foata normal form. 1/28629 useless extension candidates. Maximal degree in co-relation 179148. Up to 15081 conditions per place. [2022-12-13 21:58:27,074 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 1225 selfloop transitions, 91 changer transitions 7/1323 dead transitions. [2022-12-13 21:58:27,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 1323 transitions, 22912 flow [2022-12-13 21:58:27,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:58:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:58:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4327 transitions. [2022-12-13 21:58:27,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4141066130730213 [2022-12-13 21:58:27,084 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4327 transitions. [2022-12-13 21:58:27,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4327 transitions. [2022-12-13 21:58:27,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:58:27,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4327 transitions. [2022-12-13 21:58:27,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 480.77777777777777) internal successors, (4327), 9 states have internal predecessors, (4327), 0 states have call successors, (0), 0 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 21:58:27,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 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 21:58:27,099 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 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 21:58:27,099 INFO L175 Difference]: Start difference. First operand has 145 places, 698 transitions, 10604 flow. Second operand 9 states and 4327 transitions. [2022-12-13 21:58:27,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 1323 transitions, 22912 flow [2022-12-13 21:58:33,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 1323 transitions, 22577 flow, removed 166 selfloop flow, removed 3 redundant places. [2022-12-13 21:58:33,269 INFO L231 Difference]: Finished difference. Result has 156 places, 712 transitions, 10825 flow [2022-12-13 21:58:33,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=10399, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10825, PETRI_PLACES=156, PETRI_TRANSITIONS=712} [2022-12-13 21:58:33,270 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2022-12-13 21:58:33,270 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 712 transitions, 10825 flow [2022-12-13 21:58:33,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 470.0) internal successors, (4230), 9 states have internal predecessors, (4230), 0 states have call successors, (0), 0 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 21:58:33,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:58:33,271 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:33,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:58:33,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:58:33,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:33,271 INFO L85 PathProgramCache]: Analyzing trace with hash 458912097, now seen corresponding path program 1 times [2022-12-13 21:58:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:33,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619436224] [2022-12-13 21:58:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:33,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:58:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:33,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619436224] [2022-12-13 21:58:33,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619436224] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:58:33,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:58:33,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:58:33,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225953940] [2022-12-13 21:58:33,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:58:33,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:58:33,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:33,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:58:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:58:33,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1161 [2022-12-13 21:58:33,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 712 transitions, 10825 flow. Second operand has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 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 21:58:33,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:58:33,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1161 [2022-12-13 21:58:33,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:58:42,135 INFO L130 PetriNetUnfolder]: 18481/31923 cut-off events. [2022-12-13 21:58:42,135 INFO L131 PetriNetUnfolder]: For 374658/374658 co-relation queries the response was YES. [2022-12-13 21:58:42,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203053 conditions, 31923 events. 18481/31923 cut-off events. For 374658/374658 co-relation queries the response was YES. Maximal size of possible extension queue 2001. Compared 277932 event pairs, 5687 based on Foata normal form. 247/32169 useless extension candidates. Maximal degree in co-relation 202976. Up to 14241 conditions per place. [2022-12-13 21:58:42,428 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 876 selfloop transitions, 341 changer transitions 19/1236 dead transitions. [2022-12-13 21:58:42,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 1236 transitions, 21027 flow [2022-12-13 21:58:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:58:42,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:58:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2540 transitions. [2022-12-13 21:58:42,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43755383290267014 [2022-12-13 21:58:42,432 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2540 transitions. [2022-12-13 21:58:42,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2540 transitions. [2022-12-13 21:58:42,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:58:42,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2540 transitions. [2022-12-13 21:58:42,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 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 21:58:42,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1161.0) internal successors, (6966), 6 states have internal predecessors, (6966), 0 states have call successors, (0), 0 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 21:58:42,439 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1161.0) internal successors, (6966), 6 states have internal predecessors, (6966), 0 states have call successors, (0), 0 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 21:58:42,439 INFO L175 Difference]: Start difference. First operand has 156 places, 712 transitions, 10825 flow. Second operand 5 states and 2540 transitions. [2022-12-13 21:58:42,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 1236 transitions, 21027 flow [2022-12-13 21:58:49,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 1236 transitions, 20833 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-12-13 21:58:49,310 INFO L231 Difference]: Finished difference. Result has 161 places, 875 transitions, 14851 flow [2022-12-13 21:58:49,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=10740, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=14851, PETRI_PLACES=161, PETRI_TRANSITIONS=875} [2022-12-13 21:58:49,311 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2022-12-13 21:58:49,311 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 875 transitions, 14851 flow [2022-12-13 21:58:49,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 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 21:58:49,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:58:49,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:49,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:58:49,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:58:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:49,312 INFO L85 PathProgramCache]: Analyzing trace with hash 59232399, now seen corresponding path program 2 times [2022-12-13 21:58:49,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:49,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973759890] [2022-12-13 21:58:49,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:49,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:58:50,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:50,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973759890] [2022-12-13 21:58:50,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973759890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:58:50,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:58:50,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:58:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217584921] [2022-12-13 21:58:50,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:58:50,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:58:50,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:58:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:58:50,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 21:58:50,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 875 transitions, 14851 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 21:58:50,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:58:50,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 21:58:50,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:00,847 INFO L130 PetriNetUnfolder]: 18860/33642 cut-off events. [2022-12-13 21:59:00,847 INFO L131 PetriNetUnfolder]: For 426378/426378 co-relation queries the response was YES. [2022-12-13 21:59:01,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223565 conditions, 33642 events. 18860/33642 cut-off events. For 426378/426378 co-relation queries the response was YES. Maximal size of possible extension queue 2062. Compared 306393 event pairs, 3582 based on Foata normal form. 47/33688 useless extension candidates. Maximal degree in co-relation 223486. Up to 16399 conditions per place. [2022-12-13 21:59:01,186 INFO L137 encePairwiseOnDemand]: 1155/1161 looper letters, 1119 selfloop transitions, 212 changer transitions 104/1435 dead transitions. [2022-12-13 21:59:01,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 1435 transitions, 27458 flow [2022-12-13 21:59:01,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:59:01,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:59:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3417 transitions. [2022-12-13 21:59:01,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4204503506829088 [2022-12-13 21:59:01,193 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3417 transitions. [2022-12-13 21:59:01,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3417 transitions. [2022-12-13 21:59:01,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:01,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3417 transitions. [2022-12-13 21:59:01,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 488.14285714285717) internal successors, (3417), 7 states have internal predecessors, (3417), 0 states have call successors, (0), 0 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 21:59:01,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 21:59:01,205 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 21:59:01,206 INFO L175 Difference]: Start difference. First operand has 161 places, 875 transitions, 14851 flow. Second operand 7 states and 3417 transitions. [2022-12-13 21:59:01,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 1435 transitions, 27458 flow [2022-12-13 21:59:09,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1435 transitions, 27392 flow, removed 33 selfloop flow, removed 0 redundant places. [2022-12-13 21:59:09,465 INFO L231 Difference]: Finished difference. Result has 172 places, 954 transitions, 17328 flow [2022-12-13 21:59:09,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=14811, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=875, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17328, PETRI_PLACES=172, PETRI_TRANSITIONS=954} [2022-12-13 21:59:09,465 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2022-12-13 21:59:09,465 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 954 transitions, 17328 flow [2022-12-13 21:59:09,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 21:59:09,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:09,466 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:09,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 21:59:09,466 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:09,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash -805389213, now seen corresponding path program 3 times [2022-12-13 21:59:09,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:09,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154975970] [2022-12-13 21:59:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:09,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:59:10,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:10,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154975970] [2022-12-13 21:59:10,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154975970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:10,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:10,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:59:10,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479907606] [2022-12-13 21:59:10,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:10,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:59:10,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:10,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:59:10,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:59:10,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 21:59:10,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 954 transitions, 17328 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 21:59:10,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:10,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 21:59:10,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:22,070 INFO L130 PetriNetUnfolder]: 18557/33683 cut-off events. [2022-12-13 21:59:22,070 INFO L131 PetriNetUnfolder]: For 510579/510579 co-relation queries the response was YES. [2022-12-13 21:59:22,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232852 conditions, 33683 events. 18557/33683 cut-off events. For 510579/510579 co-relation queries the response was YES. Maximal size of possible extension queue 2072. Compared 312438 event pairs, 5841 based on Foata normal form. 24/33706 useless extension candidates. Maximal degree in co-relation 232767. Up to 17508 conditions per place. [2022-12-13 21:59:22,385 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 982 selfloop transitions, 387 changer transitions 15/1384 dead transitions. [2022-12-13 21:59:22,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1384 transitions, 27446 flow [2022-12-13 21:59:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:59:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:59:22,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3419 transitions. [2022-12-13 21:59:22,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4206964439522579 [2022-12-13 21:59:22,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3419 transitions. [2022-12-13 21:59:22,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3419 transitions. [2022-12-13 21:59:22,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:22,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3419 transitions. [2022-12-13 21:59:22,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 488.42857142857144) internal successors, (3419), 7 states have internal predecessors, (3419), 0 states have call successors, (0), 0 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 21:59:22,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 21:59:22,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 21:59:22,397 INFO L175 Difference]: Start difference. First operand has 172 places, 954 transitions, 17328 flow. Second operand 7 states and 3419 transitions. [2022-12-13 21:59:22,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1384 transitions, 27446 flow [2022-12-13 21:59:32,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1384 transitions, 27161 flow, removed 86 selfloop flow, removed 3 redundant places. [2022-12-13 21:59:32,513 INFO L231 Difference]: Finished difference. Result has 177 places, 1029 transitions, 19854 flow [2022-12-13 21:59:32,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=17179, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19854, PETRI_PLACES=177, PETRI_TRANSITIONS=1029} [2022-12-13 21:59:32,514 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2022-12-13 21:59:32,514 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 1029 transitions, 19854 flow [2022-12-13 21:59:32,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 21:59:32,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:32,515 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:32,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:59:32,515 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:32,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:32,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1623439147, now seen corresponding path program 4 times [2022-12-13 21:59:32,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:32,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268232339] [2022-12-13 21:59:32,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:32,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:59:33,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:33,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268232339] [2022-12-13 21:59:33,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268232339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:33,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:33,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:59:33,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090692476] [2022-12-13 21:59:33,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:33,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:59:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:59:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:59:33,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 21:59:33,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 1029 transitions, 19854 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 21:59:33,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:33,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 21:59:33,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:45,723 INFO L130 PetriNetUnfolder]: 18437/33371 cut-off events. [2022-12-13 21:59:45,723 INFO L131 PetriNetUnfolder]: For 558340/558340 co-relation queries the response was YES. [2022-12-13 21:59:45,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239158 conditions, 33371 events. 18437/33371 cut-off events. For 558340/558340 co-relation queries the response was YES. Maximal size of possible extension queue 2072. Compared 308598 event pairs, 5949 based on Foata normal form. 24/33394 useless extension candidates. Maximal degree in co-relation 239071. Up to 17508 conditions per place. [2022-12-13 21:59:46,023 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 968 selfloop transitions, 372 changer transitions 37/1377 dead transitions. [2022-12-13 21:59:46,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 1377 transitions, 28507 flow [2022-12-13 21:59:46,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:59:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:59:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3413 transitions. [2022-12-13 21:59:46,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41995816414421067 [2022-12-13 21:59:46,026 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3413 transitions. [2022-12-13 21:59:46,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3413 transitions. [2022-12-13 21:59:46,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:46,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3413 transitions. [2022-12-13 21:59:46,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 487.57142857142856) internal successors, (3413), 7 states have internal predecessors, (3413), 0 states have call successors, (0), 0 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 21:59:46,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 21:59:46,034 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 21:59:46,034 INFO L175 Difference]: Start difference. First operand has 177 places, 1029 transitions, 19854 flow. Second operand 7 states and 3413 transitions. [2022-12-13 21:59:46,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 1377 transitions, 28507 flow [2022-12-13 21:59:58,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 1377 transitions, 27944 flow, removed 66 selfloop flow, removed 3 redundant places. [2022-12-13 21:59:58,616 INFO L231 Difference]: Finished difference. Result has 180 places, 1008 transitions, 19677 flow [2022-12-13 21:59:58,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=19341, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1029, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19677, PETRI_PLACES=180, PETRI_TRANSITIONS=1008} [2022-12-13 21:59:58,617 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2022-12-13 21:59:58,617 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 1008 transitions, 19677 flow [2022-12-13 21:59:58,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 21:59:58,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:58,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:58,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 21:59:58,618 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:58,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:58,618 INFO L85 PathProgramCache]: Analyzing trace with hash 842649255, now seen corresponding path program 5 times [2022-12-13 21:59:58,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:58,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663492866] [2022-12-13 21:59:58,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:58,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:00:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 22:00:00,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:00:00,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663492866] [2022-12-13 22:00:00,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663492866] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:00:00,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460951246] [2022-12-13 22:00:00,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 22:00:00,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:00:00,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:00:00,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:00:00,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:00:00,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:00:00,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:00:00,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 22:00:00,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:00:00,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:00:00,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 284 treesize of output 354 [2022-12-13 22:00:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:00:07,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:00:07,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460951246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:00:07,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:00:07,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-12-13 22:00:07,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391195114] [2022-12-13 22:00:07,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:00:07,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:00:07,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:00:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:00:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:00:08,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:00:08,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 1008 transitions, 19677 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:00:08,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:00:08,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:00:08,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:00:21,648 INFO L130 PetriNetUnfolder]: 19191/35770 cut-off events. [2022-12-13 22:00:21,648 INFO L131 PetriNetUnfolder]: For 592927/592927 co-relation queries the response was YES. [2022-12-13 22:00:21,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255666 conditions, 35770 events. 19191/35770 cut-off events. For 592927/592927 co-relation queries the response was YES. Maximal size of possible extension queue 2206. Compared 344954 event pairs, 7850 based on Foata normal form. 24/35793 useless extension candidates. Maximal degree in co-relation 255579. Up to 27323 conditions per place. [2022-12-13 22:00:22,057 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 891 selfloop transitions, 549 changer transitions 10/1450 dead transitions. [2022-12-13 22:00:22,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 1450 transitions, 30668 flow [2022-12-13 22:00:22,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:00:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:00:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3405 transitions. [2022-12-13 22:00:22,063 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4189737910668143 [2022-12-13 22:00:22,063 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3405 transitions. [2022-12-13 22:00:22,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3405 transitions. [2022-12-13 22:00:22,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:00:22,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3405 transitions. [2022-12-13 22:00:22,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 486.42857142857144) internal successors, (3405), 7 states have internal predecessors, (3405), 0 states have call successors, (0), 0 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 22:00:22,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:00:22,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:00:22,075 INFO L175 Difference]: Start difference. First operand has 180 places, 1008 transitions, 19677 flow. Second operand 7 states and 3405 transitions. [2022-12-13 22:00:22,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 1450 transitions, 30668 flow [2022-12-13 22:00:37,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 1450 transitions, 29716 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-12-13 22:00:37,078 INFO L231 Difference]: Finished difference. Result has 184 places, 1261 transitions, 26211 flow [2022-12-13 22:00:37,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=18915, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26211, PETRI_PLACES=184, PETRI_TRANSITIONS=1261} [2022-12-13 22:00:37,079 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 142 predicate places. [2022-12-13 22:00:37,079 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 1261 transitions, 26211 flow [2022-12-13 22:00:37,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:00:37,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:00:37,079 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:00:37,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:00:37,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:00:37,281 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:00:37,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:00:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1572945493, now seen corresponding path program 6 times [2022-12-13 22:00:37,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:00:37,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243169981] [2022-12-13 22:00:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:00:37,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:00:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:00:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:00:38,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:00:38,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243169981] [2022-12-13 22:00:38,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243169981] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:00:38,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:00:38,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:00:38,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319641492] [2022-12-13 22:00:38,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:00:38,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:00:38,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:00:38,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:00:38,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:00:38,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:00:38,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 1261 transitions, 26211 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:00:38,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:00:38,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:00:38,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:00:53,380 INFO L130 PetriNetUnfolder]: 19067/35448 cut-off events. [2022-12-13 22:00:53,380 INFO L131 PetriNetUnfolder]: For 648054/648054 co-relation queries the response was YES. [2022-12-13 22:00:53,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262449 conditions, 35448 events. 19067/35448 cut-off events. For 648054/648054 co-relation queries the response was YES. Maximal size of possible extension queue 2203. Compared 340587 event pairs, 7788 based on Foata normal form. 30/35477 useless extension candidates. Maximal degree in co-relation 262358. Up to 26589 conditions per place. [2022-12-13 22:00:53,763 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 1059 selfloop transitions, 387 changer transitions 133/1579 dead transitions. [2022-12-13 22:00:53,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1579 transitions, 35270 flow [2022-12-13 22:00:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:00:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:00:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3411 transitions. [2022-12-13 22:00:53,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41971207087486156 [2022-12-13 22:00:53,767 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3411 transitions. [2022-12-13 22:00:53,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3411 transitions. [2022-12-13 22:00:53,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:00:53,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3411 transitions. [2022-12-13 22:00:53,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 487.2857142857143) internal successors, (3411), 7 states have internal predecessors, (3411), 0 states have call successors, (0), 0 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 22:00:53,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:00:53,775 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:00:53,775 INFO L175 Difference]: Start difference. First operand has 184 places, 1261 transitions, 26211 flow. Second operand 7 states and 3411 transitions. [2022-12-13 22:00:53,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1579 transitions, 35270 flow [2022-12-13 22:01:11,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 1579 transitions, 34594 flow, removed 154 selfloop flow, removed 2 redundant places. [2022-12-13 22:01:11,944 INFO L231 Difference]: Finished difference. Result has 191 places, 1246 transitions, 26216 flow [2022-12-13 22:01:11,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=25599, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=886, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26216, PETRI_PLACES=191, PETRI_TRANSITIONS=1246} [2022-12-13 22:01:11,945 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 149 predicate places. [2022-12-13 22:01:11,945 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 1246 transitions, 26216 flow [2022-12-13 22:01:11,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:01:11,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:01:11,946 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:01:11,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 22:01:11,946 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:01:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:01:11,946 INFO L85 PathProgramCache]: Analyzing trace with hash 914418697, now seen corresponding path program 7 times [2022-12-13 22:01:11,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:01:11,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921030111] [2022-12-13 22:01:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:01:11,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:01:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:01:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 22:01:13,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:01:13,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921030111] [2022-12-13 22:01:13,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921030111] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:01:13,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539635533] [2022-12-13 22:01:13,059 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 22:01:13,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:01:13,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:01:13,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:01:13,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:01:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:01:13,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 22:01:13,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:01:20,272 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 87 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:01:21,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:01:21,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 268 treesize of output 1096 [2022-12-13 22:01:41,959 INFO L321 Elim1Store]: treesize reduction 3, result has 97.3 percent of original size [2022-12-13 22:01:41,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 130 [2022-12-13 22:01:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:01:42,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:01:42,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539635533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:01:42,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:01:42,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-12-13 22:01:42,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814409273] [2022-12-13 22:01:42,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:01:42,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:01:42,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:01:42,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:01:42,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:01:43,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:01:43,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 1246 transitions, 26216 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:01:43,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:01:43,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:01:43,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:02:02,079 INFO L130 PetriNetUnfolder]: 18610/34444 cut-off events. [2022-12-13 22:02:02,079 INFO L131 PetriNetUnfolder]: For 670417/670417 co-relation queries the response was YES. [2022-12-13 22:02:02,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259493 conditions, 34444 events. 18610/34444 cut-off events. For 670417/670417 co-relation queries the response was YES. Maximal size of possible extension queue 2154. Compared 328273 event pairs, 7638 based on Foata normal form. 24/34467 useless extension candidates. Maximal degree in co-relation 259398. Up to 27489 conditions per place. [2022-12-13 22:02:02,428 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 838 selfloop transitions, 541 changer transitions 33/1412 dead transitions. [2022-12-13 22:02:02,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 1412 transitions, 31892 flow [2022-12-13 22:02:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:02:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:02:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3399 transitions. [2022-12-13 22:02:02,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41823551125876707 [2022-12-13 22:02:02,432 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3399 transitions. [2022-12-13 22:02:02,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3399 transitions. [2022-12-13 22:02:02,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:02:02,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3399 transitions. [2022-12-13 22:02:02,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 485.57142857142856) internal successors, (3399), 7 states have internal predecessors, (3399), 0 states have call successors, (0), 0 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 22:02:02,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:02:02,439 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:02:02,439 INFO L175 Difference]: Start difference. First operand has 191 places, 1246 transitions, 26216 flow. Second operand 7 states and 3399 transitions. [2022-12-13 22:02:02,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 1412 transitions, 31892 flow [2022-12-13 22:02:20,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 1412 transitions, 31456 flow, removed 65 selfloop flow, removed 3 redundant places. [2022-12-13 22:02:20,186 INFO L231 Difference]: Finished difference. Result has 194 places, 1240 transitions, 26803 flow [2022-12-13 22:02:20,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=25790, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=705, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26803, PETRI_PLACES=194, PETRI_TRANSITIONS=1240} [2022-12-13 22:02:20,187 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2022-12-13 22:02:20,187 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 1240 transitions, 26803 flow [2022-12-13 22:02:20,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:02:20,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:02:20,188 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:02:20,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 22:02:20,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 22:02:20,389 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:02:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:02:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1155783009, now seen corresponding path program 8 times [2022-12-13 22:02:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:02:20,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417900379] [2022-12-13 22:02:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:02:20,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:02:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:02:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:02:21,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:02:21,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417900379] [2022-12-13 22:02:21,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417900379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:02:21,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:02:21,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:02:21,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902177326] [2022-12-13 22:02:21,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:02:21,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:02:21,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:02:21,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:02:21,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:02:21,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:02:21,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 1240 transitions, 26803 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:02:21,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:02:21,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:02:21,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:02:35,784 INFO L130 PetriNetUnfolder]: 18674/34663 cut-off events. [2022-12-13 22:02:35,785 INFO L131 PetriNetUnfolder]: For 690430/690430 co-relation queries the response was YES. [2022-12-13 22:02:36,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266332 conditions, 34663 events. 18674/34663 cut-off events. For 690430/690430 co-relation queries the response was YES. Maximal size of possible extension queue 2199. Compared 332097 event pairs, 7886 based on Foata normal form. 30/34692 useless extension candidates. Maximal degree in co-relation 266237. Up to 28250 conditions per place. [2022-12-13 22:02:36,151 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 877 selfloop transitions, 567 changer transitions 34/1478 dead transitions. [2022-12-13 22:02:36,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1478 transitions, 34457 flow [2022-12-13 22:02:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 22:02:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 22:02:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4828 transitions. [2022-12-13 22:02:36,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41584840654608096 [2022-12-13 22:02:36,155 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4828 transitions. [2022-12-13 22:02:36,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4828 transitions. [2022-12-13 22:02:36,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:02:36,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4828 transitions. [2022-12-13 22:02:36,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 482.8) internal successors, (4828), 10 states have internal predecessors, (4828), 0 states have call successors, (0), 0 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 22:02:36,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1161.0) internal successors, (12771), 11 states have internal predecessors, (12771), 0 states have call successors, (0), 0 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 22:02:36,165 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1161.0) internal successors, (12771), 11 states have internal predecessors, (12771), 0 states have call successors, (0), 0 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 22:02:36,165 INFO L175 Difference]: Start difference. First operand has 194 places, 1240 transitions, 26803 flow. Second operand 10 states and 4828 transitions. [2022-12-13 22:02:36,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1478 transitions, 34457 flow [2022-12-13 22:02:56,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 1478 transitions, 33713 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-12-13 22:02:56,216 INFO L231 Difference]: Finished difference. Result has 201 places, 1299 transitions, 29006 flow [2022-12-13 22:02:56,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=26117, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=29006, PETRI_PLACES=201, PETRI_TRANSITIONS=1299} [2022-12-13 22:02:56,217 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2022-12-13 22:02:56,217 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 1299 transitions, 29006 flow [2022-12-13 22:02:56,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:02:56,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:02:56,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:02:56,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 22:02:56,218 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:02:56,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:02:56,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1566799083, now seen corresponding path program 9 times [2022-12-13 22:02:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:02:56,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427176581] [2022-12-13 22:02:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:02:56,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:02:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:02:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:02:56,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:02:56,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427176581] [2022-12-13 22:02:56,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427176581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:02:56,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:02:56,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:02:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050983672] [2022-12-13 22:02:56,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:02:56,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:02:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:02:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:02:56,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:02:57,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:02:57,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 1299 transitions, 29006 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:02:57,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:02:57,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:02:57,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:12,262 INFO L130 PetriNetUnfolder]: 18632/35412 cut-off events. [2022-12-13 22:03:12,262 INFO L131 PetriNetUnfolder]: For 712054/712054 co-relation queries the response was YES. [2022-12-13 22:03:12,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271584 conditions, 35412 events. 18632/35412 cut-off events. For 712054/712054 co-relation queries the response was YES. Maximal size of possible extension queue 2221. Compared 348110 event pairs, 7901 based on Foata normal form. 30/35441 useless extension candidates. Maximal degree in co-relation 271486. Up to 27915 conditions per place. [2022-12-13 22:03:12,635 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 882 selfloop transitions, 562 changer transitions 22/1466 dead transitions. [2022-12-13 22:03:12,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 1466 transitions, 34667 flow [2022-12-13 22:03:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:03:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 22:03:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4358 transitions. [2022-12-13 22:03:12,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4170734041535075 [2022-12-13 22:03:12,640 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4358 transitions. [2022-12-13 22:03:12,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4358 transitions. [2022-12-13 22:03:12,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:12,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4358 transitions. [2022-12-13 22:03:12,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 484.22222222222223) internal successors, (4358), 9 states have internal predecessors, (4358), 0 states have call successors, (0), 0 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 22:03:12,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 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 22:03:12,649 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 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 22:03:12,650 INFO L175 Difference]: Start difference. First operand has 201 places, 1299 transitions, 29006 flow. Second operand 9 states and 4358 transitions. [2022-12-13 22:03:12,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 1466 transitions, 34667 flow [2022-12-13 22:03:32,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1466 transitions, 33236 flow, removed 122 selfloop flow, removed 4 redundant places. [2022-12-13 22:03:32,331 INFO L231 Difference]: Finished difference. Result has 204 places, 1294 transitions, 28651 flow [2022-12-13 22:03:32,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=27577, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=28651, PETRI_PLACES=204, PETRI_TRANSITIONS=1294} [2022-12-13 22:03:32,332 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2022-12-13 22:03:32,332 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 1294 transitions, 28651 flow [2022-12-13 22:03:32,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:03:32,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:32,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:03:32,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 22:03:32,333 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:03:32,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash -2094905641, now seen corresponding path program 10 times [2022-12-13 22:03:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:32,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412254441] [2022-12-13 22:03:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:03:33,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:33,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412254441] [2022-12-13 22:03:33,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412254441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:33,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:33,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:03:33,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117931049] [2022-12-13 22:03:33,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:33,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:03:33,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:33,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:03:33,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:03:33,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:03:33,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 1294 transitions, 28651 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:03:33,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:33,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:03:33,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:48,089 INFO L130 PetriNetUnfolder]: 18463/35208 cut-off events. [2022-12-13 22:03:48,089 INFO L131 PetriNetUnfolder]: For 719463/719463 co-relation queries the response was YES. [2022-12-13 22:03:48,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269697 conditions, 35208 events. 18463/35208 cut-off events. For 719463/719463 co-relation queries the response was YES. Maximal size of possible extension queue 2212. Compared 347037 event pairs, 7999 based on Foata normal form. 30/35237 useless extension candidates. Maximal degree in co-relation 269597. Up to 28735 conditions per place. [2022-12-13 22:03:48,477 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 860 selfloop transitions, 556 changer transitions 41/1457 dead transitions. [2022-12-13 22:03:48,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 1457 transitions, 34356 flow [2022-12-13 22:03:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:03:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 22:03:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4350 transitions. [2022-12-13 22:03:48,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4163077806488659 [2022-12-13 22:03:48,481 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4350 transitions. [2022-12-13 22:03:48,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4350 transitions. [2022-12-13 22:03:48,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:48,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4350 transitions. [2022-12-13 22:03:48,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 483.3333333333333) internal successors, (4350), 9 states have internal predecessors, (4350), 0 states have call successors, (0), 0 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 22:03:48,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 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 22:03:48,490 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 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 22:03:48,490 INFO L175 Difference]: Start difference. First operand has 204 places, 1294 transitions, 28651 flow. Second operand 9 states and 4350 transitions. [2022-12-13 22:03:48,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 1457 transitions, 34356 flow [2022-12-13 22:04:07,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1457 transitions, 33255 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-12-13 22:04:07,451 INFO L231 Difference]: Finished difference. Result has 207 places, 1284 transitions, 28625 flow [2022-12-13 22:04:07,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=27550, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=545, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=738, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=28625, PETRI_PLACES=207, PETRI_TRANSITIONS=1284} [2022-12-13 22:04:07,452 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2022-12-13 22:04:07,452 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 1284 transitions, 28625 flow [2022-12-13 22:04:07,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:04:07,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:07,452 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:07,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 22:04:07,452 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:07,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1528243329, now seen corresponding path program 11 times [2022-12-13 22:04:07,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:07,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566541244] [2022-12-13 22:04:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:07,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:04:08,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:08,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566541244] [2022-12-13 22:04:08,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566541244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:08,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:08,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:04:08,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561607445] [2022-12-13 22:04:08,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:08,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:04:08,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:08,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:04:08,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:04:08,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:04:08,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 1284 transitions, 28625 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:04:08,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:08,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:04:08,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:23,128 INFO L130 PetriNetUnfolder]: 18339/34972 cut-off events. [2022-12-13 22:04:23,128 INFO L131 PetriNetUnfolder]: For 719238/719238 co-relation queries the response was YES. [2022-12-13 22:04:23,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269205 conditions, 34972 events. 18339/34972 cut-off events. For 719238/719238 co-relation queries the response was YES. Maximal size of possible extension queue 2210. Compared 344554 event pairs, 7995 based on Foata normal form. 30/35001 useless extension candidates. Maximal degree in co-relation 269103. Up to 28663 conditions per place. [2022-12-13 22:04:23,569 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 856 selfloop transitions, 521 changer transitions 59/1436 dead transitions. [2022-12-13 22:04:23,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 1436 transitions, 34217 flow [2022-12-13 22:04:23,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 22:04:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 22:04:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4822 transitions. [2022-12-13 22:04:23,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4153316106804479 [2022-12-13 22:04:23,574 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4822 transitions. [2022-12-13 22:04:23,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4822 transitions. [2022-12-13 22:04:23,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:23,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4822 transitions. [2022-12-13 22:04:23,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 482.2) internal successors, (4822), 10 states have internal predecessors, (4822), 0 states have call successors, (0), 0 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 22:04:23,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1161.0) internal successors, (12771), 11 states have internal predecessors, (12771), 0 states have call successors, (0), 0 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 22:04:23,584 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1161.0) internal successors, (12771), 11 states have internal predecessors, (12771), 0 states have call successors, (0), 0 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 22:04:23,584 INFO L175 Difference]: Start difference. First operand has 207 places, 1284 transitions, 28625 flow. Second operand 10 states and 4822 transitions. [2022-12-13 22:04:23,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 1436 transitions, 34217 flow [2022-12-13 22:04:43,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 1436 transitions, 32991 flow, removed 56 selfloop flow, removed 6 redundant places. [2022-12-13 22:04:43,942 INFO L231 Difference]: Finished difference. Result has 209 places, 1248 transitions, 27803 flow [2022-12-13 22:04:43,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=27441, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27803, PETRI_PLACES=209, PETRI_TRANSITIONS=1248} [2022-12-13 22:04:43,943 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2022-12-13 22:04:43,943 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 1248 transitions, 27803 flow [2022-12-13 22:04:43,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:04:43,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:43,944 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:43,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 22:04:43,944 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:43,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:43,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1122478791, now seen corresponding path program 12 times [2022-12-13 22:04:43,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:43,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911268512] [2022-12-13 22:04:43,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:43,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:04:44,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:44,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911268512] [2022-12-13 22:04:44,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911268512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:44,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:44,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:04:44,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591045707] [2022-12-13 22:04:44,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:44,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:04:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:04:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:04:45,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:04:45,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 1248 transitions, 27803 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:04:45,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:45,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:04:45,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:59,610 INFO L130 PetriNetUnfolder]: 18215/34472 cut-off events. [2022-12-13 22:04:59,610 INFO L131 PetriNetUnfolder]: For 698027/698027 co-relation queries the response was YES. [2022-12-13 22:04:59,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264372 conditions, 34472 events. 18215/34472 cut-off events. For 698027/698027 co-relation queries the response was YES. Maximal size of possible extension queue 2169. Compared 336368 event pairs, 7965 based on Foata normal form. 30/34501 useless extension candidates. Maximal degree in co-relation 264271. Up to 28406 conditions per place. [2022-12-13 22:04:59,985 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 907 selfloop transitions, 433 changer transitions 54/1394 dead transitions. [2022-12-13 22:04:59,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1394 transitions, 33141 flow [2022-12-13 22:04:59,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:04:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:04:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3397 transitions. [2022-12-13 22:04:59,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2022-12-13 22:04:59,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3397 transitions. [2022-12-13 22:04:59,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3397 transitions. [2022-12-13 22:04:59,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:59,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3397 transitions. [2022-12-13 22:04:59,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 485.2857142857143) internal successors, (3397), 7 states have internal predecessors, (3397), 0 states have call successors, (0), 0 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 22:05:00,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:05:00,002 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:05:00,002 INFO L175 Difference]: Start difference. First operand has 209 places, 1248 transitions, 27803 flow. Second operand 7 states and 3397 transitions. [2022-12-13 22:05:00,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1394 transitions, 33141 flow [2022-12-13 22:05:19,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1394 transitions, 32025 flow, removed 31 selfloop flow, removed 5 redundant places. [2022-12-13 22:05:19,580 INFO L231 Difference]: Finished difference. Result has 204 places, 1207 transitions, 26630 flow [2022-12-13 22:05:19,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=26725, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26630, PETRI_PLACES=204, PETRI_TRANSITIONS=1207} [2022-12-13 22:05:19,581 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2022-12-13 22:05:19,581 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 1207 transitions, 26630 flow [2022-12-13 22:05:19,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:05:19,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:05:19,582 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:05:19,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 22:05:19,582 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:05:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:05:19,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1794297117, now seen corresponding path program 13 times [2022-12-13 22:05:19,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:05:19,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757316593] [2022-12-13 22:05:19,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:05:19,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:05:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:05:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:05:20,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:05:20,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757316593] [2022-12-13 22:05:20,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757316593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:05:20,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:05:20,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:05:20,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474024580] [2022-12-13 22:05:20,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:05:20,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:05:20,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:05:20,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:05:20,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:05:20,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:05:20,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 1207 transitions, 26630 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:05:20,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:05:20,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:05:20,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:05:34,481 INFO L130 PetriNetUnfolder]: 18137/34082 cut-off events. [2022-12-13 22:05:34,481 INFO L131 PetriNetUnfolder]: For 684630/684630 co-relation queries the response was YES. [2022-12-13 22:05:34,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260458 conditions, 34082 events. 18137/34082 cut-off events. For 684630/684630 co-relation queries the response was YES. Maximal size of possible extension queue 2151. Compared 329779 event pairs, 7839 based on Foata normal form. 30/34111 useless extension candidates. Maximal degree in co-relation 260356. Up to 27914 conditions per place. [2022-12-13 22:05:34,844 INFO L137 encePairwiseOnDemand]: 1153/1161 looper letters, 870 selfloop transitions, 376 changer transitions 124/1370 dead transitions. [2022-12-13 22:05:34,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 1370 transitions, 32215 flow [2022-12-13 22:05:34,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:05:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:05:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3398 transitions. [2022-12-13 22:05:34,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4181124646240925 [2022-12-13 22:05:34,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3398 transitions. [2022-12-13 22:05:34,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3398 transitions. [2022-12-13 22:05:34,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:05:34,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3398 transitions. [2022-12-13 22:05:34,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 485.42857142857144) internal successors, (3398), 7 states have internal predecessors, (3398), 0 states have call successors, (0), 0 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 22:05:34,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:05:34,855 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:05:34,855 INFO L175 Difference]: Start difference. First operand has 204 places, 1207 transitions, 26630 flow. Second operand 7 states and 3398 transitions. [2022-12-13 22:05:34,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 1370 transitions, 32215 flow [2022-12-13 22:05:52,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1370 transitions, 31759 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-12-13 22:05:52,852 INFO L231 Difference]: Finished difference. Result has 207 places, 1143 transitions, 25347 flow [2022-12-13 22:05:52,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=26174, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=376, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=831, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25347, PETRI_PLACES=207, PETRI_TRANSITIONS=1143} [2022-12-13 22:05:52,853 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2022-12-13 22:05:52,853 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 1143 transitions, 25347 flow [2022-12-13 22:05:52,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:05:52,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:05:52,854 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:05:52,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 22:05:52,854 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:05:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:05:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash -636783095, now seen corresponding path program 14 times [2022-12-13 22:05:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:05:52,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740818343] [2022-12-13 22:05:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:05:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:05:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:05:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:05:53,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:05:53,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740818343] [2022-12-13 22:05:53,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740818343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:05:53,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:05:53,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:05:53,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759687393] [2022-12-13 22:05:53,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:05:53,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:05:53,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:05:53,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:05:53,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:05:54,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:05:54,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 1143 transitions, 25347 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:05:54,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:05:54,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:05:54,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:06:09,859 INFO L130 PetriNetUnfolder]: 18218/35402 cut-off events. [2022-12-13 22:06:09,859 INFO L131 PetriNetUnfolder]: For 705320/705320 co-relation queries the response was YES. [2022-12-13 22:06:10,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268774 conditions, 35402 events. 18218/35402 cut-off events. For 705320/705320 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 356397 event pairs, 3779 based on Foata normal form. 47/35448 useless extension candidates. Maximal degree in co-relation 268671. Up to 16831 conditions per place. [2022-12-13 22:06:10,228 INFO L137 encePairwiseOnDemand]: 1155/1161 looper letters, 1094 selfloop transitions, 374 changer transitions 111/1579 dead transitions. [2022-12-13 22:06:10,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1579 transitions, 37363 flow [2022-12-13 22:06:10,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:06:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:06:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3417 transitions. [2022-12-13 22:06:10,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4204503506829088 [2022-12-13 22:06:10,232 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3417 transitions. [2022-12-13 22:06:10,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3417 transitions. [2022-12-13 22:06:10,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:06:10,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3417 transitions. [2022-12-13 22:06:10,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 488.14285714285717) internal successors, (3417), 7 states have internal predecessors, (3417), 0 states have call successors, (0), 0 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 22:06:10,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:06:10,239 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:06:10,239 INFO L175 Difference]: Start difference. First operand has 207 places, 1143 transitions, 25347 flow. Second operand 7 states and 3417 transitions. [2022-12-13 22:06:10,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1579 transitions, 37363 flow [2022-12-13 22:06:29,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1579 transitions, 36263 flow, removed 93 selfloop flow, removed 5 redundant places. [2022-12-13 22:06:29,837 INFO L231 Difference]: Finished difference. Result has 209 places, 1286 transitions, 29185 flow [2022-12-13 22:06:29,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=24471, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=769, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=29185, PETRI_PLACES=209, PETRI_TRANSITIONS=1286} [2022-12-13 22:06:29,838 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2022-12-13 22:06:29,838 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 1286 transitions, 29185 flow [2022-12-13 22:06:29,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:06:29,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:06:29,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:06:29,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 22:06:29,839 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:06:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:06:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash 20888237, now seen corresponding path program 15 times [2022-12-13 22:06:29,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:06:29,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53193976] [2022-12-13 22:06:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:06:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:06:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:06:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 22:06:30,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:06:30,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53193976] [2022-12-13 22:06:30,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53193976] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:06:30,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99247675] [2022-12-13 22:06:30,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:06:30,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:06:30,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:06:30,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:06:30,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:06:31,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 22:06:31,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:06:31,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 22:06:31,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:06:31,275 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:06:31,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 284 treesize of output 354 [2022-12-13 22:06:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:06:37,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:06:37,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99247675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:06:37,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:06:37,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-12-13 22:06:37,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938878515] [2022-12-13 22:06:37,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:06:37,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:06:37,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:06:37,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:06:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:06:38,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:06:38,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 1286 transitions, 29185 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:06:38,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:06:38,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:06:38,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:06:55,168 INFO L130 PetriNetUnfolder]: 17878/35743 cut-off events. [2022-12-13 22:06:55,169 INFO L131 PetriNetUnfolder]: For 752896/752896 co-relation queries the response was YES. [2022-12-13 22:06:55,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270277 conditions, 35743 events. 17878/35743 cut-off events. For 752896/752896 co-relation queries the response was YES. Maximal size of possible extension queue 2249. Compared 370543 event pairs, 7680 based on Foata normal form. 24/35766 useless extension candidates. Maximal degree in co-relation 270171. Up to 27255 conditions per place. [2022-12-13 22:06:55,555 INFO L137 encePairwiseOnDemand]: 1154/1161 looper letters, 820 selfloop transitions, 729 changer transitions 62/1611 dead transitions. [2022-12-13 22:06:55,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 1611 transitions, 38964 flow [2022-12-13 22:06:55,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:06:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:06:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3405 transitions. [2022-12-13 22:06:55,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4189737910668143 [2022-12-13 22:06:55,559 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3405 transitions. [2022-12-13 22:06:55,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3405 transitions. [2022-12-13 22:06:55,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:06:55,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3405 transitions. [2022-12-13 22:06:55,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 486.42857142857144) internal successors, (3405), 7 states have internal predecessors, (3405), 0 states have call successors, (0), 0 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 22:06:55,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:06:55,566 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:06:55,566 INFO L175 Difference]: Start difference. First operand has 209 places, 1286 transitions, 29185 flow. Second operand 7 states and 3405 transitions. [2022-12-13 22:06:55,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 1611 transitions, 38964 flow [2022-12-13 22:07:17,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 1611 transitions, 38735 flow, removed 45 selfloop flow, removed 3 redundant places. [2022-12-13 22:07:17,558 INFO L231 Difference]: Finished difference. Result has 215 places, 1452 transitions, 35358 flow [2022-12-13 22:07:17,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=29011, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=567, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35358, PETRI_PLACES=215, PETRI_TRANSITIONS=1452} [2022-12-13 22:07:17,559 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2022-12-13 22:07:17,559 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 1452 transitions, 35358 flow [2022-12-13 22:07:17,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:07:17,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:07:17,560 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:17,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:07:17,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8714d556-2217-4676-953d-8bfbad2b77d7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 22:07:17,761 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:07:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1301040833, now seen corresponding path program 16 times [2022-12-13 22:07:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:17,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142531652] [2022-12-13 22:07:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:07:18,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:18,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142531652] [2022-12-13 22:07:18,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142531652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:07:18,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:07:18,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:07:18,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365830416] [2022-12-13 22:07:18,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:07:18,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:07:18,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:18,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:07:18,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:07:19,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:07:19,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 1452 transitions, 35358 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:07:19,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:07:19,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:07:19,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:07:36,704 INFO L130 PetriNetUnfolder]: 17587/35031 cut-off events. [2022-12-13 22:07:36,704 INFO L131 PetriNetUnfolder]: For 790069/790069 co-relation queries the response was YES. [2022-12-13 22:07:37,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276203 conditions, 35031 events. 17587/35031 cut-off events. For 790069/790069 co-relation queries the response was YES. Maximal size of possible extension queue 2198. Compared 360474 event pairs, 4059 based on Foata normal form. 47/35077 useless extension candidates. Maximal degree in co-relation 276094. Up to 20975 conditions per place. [2022-12-13 22:07:37,118 INFO L137 encePairwiseOnDemand]: 1155/1161 looper letters, 1198 selfloop transitions, 332 changer transitions 66/1596 dead transitions. [2022-12-13 22:07:37,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1596 transitions, 40811 flow [2022-12-13 22:07:37,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:07:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:07:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3403 transitions. [2022-12-13 22:07:37,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4187276977974652 [2022-12-13 22:07:37,122 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3403 transitions. [2022-12-13 22:07:37,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3403 transitions. [2022-12-13 22:07:37,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:07:37,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3403 transitions. [2022-12-13 22:07:37,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 486.14285714285717) internal successors, (3403), 7 states have internal predecessors, (3403), 0 states have call successors, (0), 0 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 22:07:37,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:07:37,129 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:07:37,129 INFO L175 Difference]: Start difference. First operand has 215 places, 1452 transitions, 35358 flow. Second operand 7 states and 3403 transitions. [2022-12-13 22:07:37,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1596 transitions, 40811 flow [2022-12-13 22:08:02,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1596 transitions, 40509 flow, removed 151 selfloop flow, removed 1 redundant places. [2022-12-13 22:08:02,995 INFO L231 Difference]: Finished difference. Result has 220 places, 1402 transitions, 34171 flow [2022-12-13 22:08:02,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=35056, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34171, PETRI_PLACES=220, PETRI_TRANSITIONS=1402} [2022-12-13 22:08:02,995 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 178 predicate places. [2022-12-13 22:08:02,995 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 1402 transitions, 34171 flow [2022-12-13 22:08:02,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:08:02,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:08:02,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:08:02,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 22:08:02,996 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:08:02,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:08:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1258173653, now seen corresponding path program 17 times [2022-12-13 22:08:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:08:02,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709011256] [2022-12-13 22:08:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:08:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:08:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:08:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:08:03,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:08:03,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709011256] [2022-12-13 22:08:03,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709011256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:08:03,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:08:03,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:08:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475160694] [2022-12-13 22:08:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:08:03,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:08:03,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:08:03,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:08:03,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:08:04,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:08:04,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 1402 transitions, 34171 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:08:04,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:08:04,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:08:04,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:08:24,106 INFO L130 PetriNetUnfolder]: 18456/38030 cut-off events. [2022-12-13 22:08:24,106 INFO L131 PetriNetUnfolder]: For 891931/891931 co-relation queries the response was YES. [2022-12-13 22:08:24,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299676 conditions, 38030 events. 18456/38030 cut-off events. For 891931/891931 co-relation queries the response was YES. Maximal size of possible extension queue 2430. Compared 408786 event pairs, 6639 based on Foata normal form. 24/38053 useless extension candidates. Maximal degree in co-relation 299566. Up to 20511 conditions per place. [2022-12-13 22:08:24,564 INFO L137 encePairwiseOnDemand]: 1154/1161 looper letters, 964 selfloop transitions, 719 changer transitions 25/1708 dead transitions. [2022-12-13 22:08:24,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1708 transitions, 43927 flow [2022-12-13 22:08:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:08:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:08:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3415 transitions. [2022-12-13 22:08:24,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4202042574135597 [2022-12-13 22:08:24,568 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3415 transitions. [2022-12-13 22:08:24,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3415 transitions. [2022-12-13 22:08:24,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:08:24,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3415 transitions. [2022-12-13 22:08:24,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 487.85714285714283) internal successors, (3415), 7 states have internal predecessors, (3415), 0 states have call successors, (0), 0 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 22:08:24,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:08:24,575 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:08:24,575 INFO L175 Difference]: Start difference. First operand has 220 places, 1402 transitions, 34171 flow. Second operand 7 states and 3415 transitions. [2022-12-13 22:08:24,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1708 transitions, 43927 flow [2022-12-13 22:08:51,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1708 transitions, 42937 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-12-13 22:08:52,002 INFO L231 Difference]: Finished difference. Result has 223 places, 1494 transitions, 38209 flow [2022-12-13 22:08:52,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=33481, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=630, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38209, PETRI_PLACES=223, PETRI_TRANSITIONS=1494} [2022-12-13 22:08:52,003 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 181 predicate places. [2022-12-13 22:08:52,003 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 1494 transitions, 38209 flow [2022-12-13 22:08:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:08:52,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:08:52,004 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:08:52,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 22:08:52,004 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:08:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:08:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1386560675, now seen corresponding path program 18 times [2022-12-13 22:08:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:08:52,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226149495] [2022-12-13 22:08:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:08:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:08:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:08:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:08:52,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:08:52,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226149495] [2022-12-13 22:08:52,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226149495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:08:52,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:08:52,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:08:52,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047002558] [2022-12-13 22:08:52,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:08:52,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:08:52,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:08:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:08:52,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:08:53,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:08:53,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 1494 transitions, 38209 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:08:53,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:08:53,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:08:53,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:14,673 INFO L130 PetriNetUnfolder]: 18302/37556 cut-off events. [2022-12-13 22:09:14,674 INFO L131 PetriNetUnfolder]: For 923538/923538 co-relation queries the response was YES. [2022-12-13 22:09:15,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298227 conditions, 37556 events. 18302/37556 cut-off events. For 923538/923538 co-relation queries the response was YES. Maximal size of possible extension queue 2413. Compared 402665 event pairs, 4376 based on Foata normal form. 47/37602 useless extension candidates. Maximal degree in co-relation 298115. Up to 22197 conditions per place. [2022-12-13 22:09:15,133 INFO L137 encePairwiseOnDemand]: 1155/1161 looper letters, 1194 selfloop transitions, 286 changer transitions 160/1640 dead transitions. [2022-12-13 22:09:15,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1640 transitions, 43755 flow [2022-12-13 22:09:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:09:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:09:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3404 transitions. [2022-12-13 22:09:15,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41885074443213977 [2022-12-13 22:09:15,137 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3404 transitions. [2022-12-13 22:09:15,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3404 transitions. [2022-12-13 22:09:15,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:15,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3404 transitions. [2022-12-13 22:09:15,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 486.2857142857143) internal successors, (3404), 7 states have internal predecessors, (3404), 0 states have call successors, (0), 0 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 22:09:15,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:09:15,144 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:09:15,144 INFO L175 Difference]: Start difference. First operand has 223 places, 1494 transitions, 38209 flow. Second operand 7 states and 3404 transitions. [2022-12-13 22:09:15,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1640 transitions, 43755 flow [2022-12-13 22:09:44,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1640 transitions, 43072 flow, removed 48 selfloop flow, removed 2 redundant places. [2022-12-13 22:09:44,809 INFO L231 Difference]: Finished difference. Result has 227 places, 1377 transitions, 34535 flow [2022-12-13 22:09:44,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=37526, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34535, PETRI_PLACES=227, PETRI_TRANSITIONS=1377} [2022-12-13 22:09:44,810 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2022-12-13 22:09:44,810 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 1377 transitions, 34535 flow [2022-12-13 22:09:44,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:09:44,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:44,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:09:44,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 22:09:44,810 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:09:44,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:44,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1455295819, now seen corresponding path program 19 times [2022-12-13 22:09:44,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:44,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365761066] [2022-12-13 22:09:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:44,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:09:45,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:45,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365761066] [2022-12-13 22:09:45,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365761066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:09:45,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:09:45,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:09:45,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049620399] [2022-12-13 22:09:45,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:09:45,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:09:45,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:45,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:09:45,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:09:46,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1161 [2022-12-13 22:09:46,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 1377 transitions, 34535 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 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 22:09:46,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:46,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1161 [2022-12-13 22:09:46,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:10:06,003 INFO L130 PetriNetUnfolder]: 17950/37201 cut-off events. [2022-12-13 22:10:06,003 INFO L131 PetriNetUnfolder]: For 914180/914180 co-relation queries the response was YES. [2022-12-13 22:10:06,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295218 conditions, 37201 events. 17950/37201 cut-off events. For 914180/914180 co-relation queries the response was YES. Maximal size of possible extension queue 2425. Compared 401424 event pairs, 6499 based on Foata normal form. 30/37230 useless extension candidates. Maximal degree in co-relation 295105. Up to 20321 conditions per place. [2022-12-13 22:10:06,442 INFO L137 encePairwiseOnDemand]: 1154/1161 looper letters, 951 selfloop transitions, 612 changer transitions 58/1621 dead transitions. [2022-12-13 22:10:06,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1621 transitions, 42206 flow [2022-12-13 22:10:06,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:10:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:10:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3417 transitions. [2022-12-13 22:10:06,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4204503506829088 [2022-12-13 22:10:06,446 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3417 transitions. [2022-12-13 22:10:06,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3417 transitions. [2022-12-13 22:10:06,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:10:06,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3417 transitions. [2022-12-13 22:10:06,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 488.14285714285717) internal successors, (3417), 7 states have internal predecessors, (3417), 0 states have call successors, (0), 0 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 22:10:06,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:10:06,452 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1161.0) internal successors, (9288), 8 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 22:10:06,452 INFO L175 Difference]: Start difference. First operand has 227 places, 1377 transitions, 34535 flow. Second operand 7 states and 3417 transitions. [2022-12-13 22:10:06,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 1621 transitions, 42206 flow