./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:24:48,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:24:48,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:24:48,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:24:48,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:24:48,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:24:48,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:24:48,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:24:48,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:24:48,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:24:48,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:24:48,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:24:48,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:24:48,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:24:48,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:24:48,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:24:48,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:24:48,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:24:48,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:24:48,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:24:48,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:24:48,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:24:48,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:24:48,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:24:48,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:24:48,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:24:48,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:24:48,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:24:48,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:24:48,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:24:48,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:24:48,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:24:48,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:24:48,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:24:48,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:24:48,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:24:48,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:24:48,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:24:48,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:24:48,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:24:48,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:24:48,139 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:24:48,174 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:24:48,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:24:48,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:24:48,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:24:48,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:24:48,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:24:48,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:24:48,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:24:48,179 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:24:48,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:24:48,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:24:48,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:24:48,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:24:48,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:24:48,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:24:48,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:24:48,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:24:48,182 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:24:48,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:24:48,182 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:24:48,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:24:48,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:24:48,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:24:48,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:24:48,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:24:48,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:24:48,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:24:48,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:24:48,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:24:48,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:24:48,184 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:24:48,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:24:48,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:24:48,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2022-11-20 12:24:48,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:24:48,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:24:48,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:24:48,542 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:24:48,543 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:24:48,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/queue_longer.i [2022-11-20 12:24:51,599 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:24:51,947 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:24:51,948 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/sv-benchmarks/c/pthread/queue_longer.i [2022-11-20 12:24:51,962 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/data/9bce5b441/c560a6e9dbb74059a142ad4c682f0741/FLAG7d0a4429d [2022-11-20 12:24:51,977 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/data/9bce5b441/c560a6e9dbb74059a142ad4c682f0741 [2022-11-20 12:24:51,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:24:51,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:24:51,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:24:51,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:24:51,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:24:51,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:24:51" (1/1) ... [2022-11-20 12:24:51,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7f72e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:51, skipping insertion in model container [2022-11-20 12:24:51,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:24:51" (1/1) ... [2022-11-20 12:24:51,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:24:52,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:24:52,595 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_584522ca-1fb8-4395-ae83-4ff5ba039d96/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-20 12:24:52,603 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_584522ca-1fb8-4395-ae83-4ff5ba039d96/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-20 12:24:52,609 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_584522ca-1fb8-4395-ae83-4ff5ba039d96/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-20 12:24:52,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:24:52,635 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:24:52,706 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_584522ca-1fb8-4395-ae83-4ff5ba039d96/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-20 12:24:52,708 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_584522ca-1fb8-4395-ae83-4ff5ba039d96/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-20 12:24:52,710 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_584522ca-1fb8-4395-ae83-4ff5ba039d96/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-20 12:24:52,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:24:52,771 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:24:52,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52 WrapperNode [2022-11-20 12:24:52,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:24:52,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:24:52,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:24:52,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:24:52,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,853 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 241 [2022-11-20 12:24:52,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:24:52,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:24:52,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:24:52,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:24:52,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,904 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:24:52,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:24:52,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:24:52,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:24:52,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (1/1) ... [2022-11-20 12:24:52,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:24:52,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:52,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:24:52,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584522ca-1fb8-4395-ae83-4ff5ba039d96/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:24:53,002 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 12:24:53,002 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 12:24:53,003 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 12:24:53,003 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 12:24:53,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:24:53,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:24:53,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:24:53,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:24:53,004 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:24:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:24:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:24:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:24:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:24:53,008 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:24:53,184 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:24:53,186 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:24:53,690 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:24:53,700 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:24:53,700 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:24:53,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:24:53 BoogieIcfgContainer [2022-11-20 12:24:53,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:24:53,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:24:53,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:24:53,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:24:53,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:24:51" (1/3) ... [2022-11-20 12:24:53,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2f9c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:24:53, skipping insertion in model container [2022-11-20 12:24:53,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:52" (2/3) ... [2022-11-20 12:24:53,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2f9c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:24:53, skipping insertion in model container [2022-11-20 12:24:53,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:24:53" (3/3) ... [2022-11-20 12:24:53,728 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2022-11-20 12:24:53,739 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:24:53,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:24:53,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 12:24:53,757 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:24:53,908 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:24:53,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 272 transitions, 560 flow [2022-11-20 12:24:54,059 INFO L130 PetriNetUnfolder]: 15/270 cut-off events. [2022-11-20 12:24:54,059 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:24:54,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 15/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 361 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-11-20 12:24:54,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 272 transitions, 560 flow [2022-11-20 12:24:54,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 260 transitions, 529 flow [2022-11-20 12:24:54,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:24:54,109 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;@16da24ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:24:54,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 12:24:54,131 INFO L130 PetriNetUnfolder]: 1/63 cut-off events. [2022-11-20 12:24:54,138 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:24:54,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:24:54,139 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:54,140 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 4 more)] === [2022-11-20 12:24:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash -244896479, now seen corresponding path program 1 times [2022-11-20 12:24:54,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:54,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334636801] [2022-11-20 12:24:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:54,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:54,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334636801] [2022-11-20 12:24:54,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334636801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:54,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:54,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:24:54,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604795927] [2022-11-20 12:24:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:54,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:24:54,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:24:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:24:54,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 272 [2022-11-20 12:24:54,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 260 transitions, 529 flow. Second operand has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:54,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:24:54,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 272 [2022-11-20 12:24:54,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:24:54,580 INFO L130 PetriNetUnfolder]: 10/249 cut-off events. [2022-11-20 12:24:54,581 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 12:24:54,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 249 events. 10/249 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 280 event pairs, 0 based on Foata normal form. 7/244 useless extension candidates. Maximal degree in co-relation 189. Up to 4 conditions per place. [2022-11-20 12:24:54,585 INFO L137 encePairwiseOnDemand]: 267/272 looper letters, 3 selfloop transitions, 0 changer transitions 0/249 dead transitions. [2022-11-20 12:24:54,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 249 transitions, 513 flow [2022-11-20 12:24:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:24:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:24:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 526 transitions. [2022-11-20 12:24:54,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9669117647058824 [2022-11-20 12:24:54,602 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 526 transitions. [2022-11-20 12:24:54,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 526 transitions. [2022-11-20 12:24:54,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:24:54,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 526 transitions. [2022-11-20 12:24:54,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:54,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:54,618 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:54,620 INFO L175 Difference]: Start difference. First operand has 252 places, 260 transitions, 529 flow. Second operand 2 states and 526 transitions. [2022-11-20 12:24:54,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 249 transitions, 513 flow [2022-11-20 12:24:54,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 249 transitions, 508 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:24:54,630 INFO L231 Difference]: Finished difference. Result has 244 places, 249 transitions, 502 flow [2022-11-20 12:24:54,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=502, PETRI_PLACES=244, PETRI_TRANSITIONS=249} [2022-11-20 12:24:54,636 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -8 predicate places. [2022-11-20 12:24:54,637 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 249 transitions, 502 flow [2022-11-20 12:24:54,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:54,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:24:54,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:54,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:24:54,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:24:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash -134729215, now seen corresponding path program 1 times [2022-11-20 12:24:54,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:54,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768027485] [2022-11-20 12:24:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:54,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:55,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:55,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768027485] [2022-11-20 12:24:55,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768027485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:55,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:55,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:24:55,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977690477] [2022-11-20 12:24:55,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:55,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:24:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:24:55,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:24:55,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 272 [2022-11-20 12:24:55,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 249 transitions, 502 flow. Second operand has 12 states, 12 states have (on average 197.75) internal successors, (2373), 12 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:55,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:24:55,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 272 [2022-11-20 12:24:55,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:24:57,360 INFO L130 PetriNetUnfolder]: 1003/4115 cut-off events. [2022-11-20 12:24:57,361 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-20 12:24:57,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5626 conditions, 4115 events. 1003/4115 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 33945 event pairs, 789 based on Foata normal form. 0/3829 useless extension candidates. Maximal degree in co-relation 5623. Up to 1435 conditions per place. [2022-11-20 12:24:57,391 INFO L137 encePairwiseOnDemand]: 259/272 looper letters, 52 selfloop transitions, 12 changer transitions 0/245 dead transitions. [2022-11-20 12:24:57,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 245 transitions, 622 flow [2022-11-20 12:24:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:24:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:24:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2600 transitions. [2022-11-20 12:24:57,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2022-11-20 12:24:57,401 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2600 transitions. [2022-11-20 12:24:57,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2600 transitions. [2022-11-20 12:24:57,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:24:57,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2600 transitions. [2022-11-20 12:24:57,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 200.0) internal successors, (2600), 13 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:57,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:57,420 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:57,420 INFO L175 Difference]: Start difference. First operand has 244 places, 249 transitions, 502 flow. Second operand 13 states and 2600 transitions. [2022-11-20 12:24:57,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 245 transitions, 622 flow [2022-11-20 12:24:57,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 245 transitions, 622 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:24:57,432 INFO L231 Difference]: Finished difference. Result has 253 places, 245 transitions, 518 flow [2022-11-20 12:24:57,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=518, PETRI_PLACES=253, PETRI_TRANSITIONS=245} [2022-11-20 12:24:57,434 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 1 predicate places. [2022-11-20 12:24:57,434 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 245 transitions, 518 flow [2022-11-20 12:24:57,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 197.75) internal successors, (2373), 12 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:57,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:24:57,436 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:57,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:24:57,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:24:57,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:57,438 INFO L85 PathProgramCache]: Analyzing trace with hash -709610595, now seen corresponding path program 1 times [2022-11-20 12:24:57,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:57,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663728268] [2022-11-20 12:24:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:57,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:57,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:57,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663728268] [2022-11-20 12:24:57,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663728268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:57,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:57,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:24:57,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347450254] [2022-11-20 12:24:57,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:57,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:24:57,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:57,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:24:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:24:57,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 272 [2022-11-20 12:24:57,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 245 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:57,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:24:57,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 272 [2022-11-20 12:24:57,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:24:57,689 INFO L130 PetriNetUnfolder]: 26/430 cut-off events. [2022-11-20 12:24:57,690 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:24:57,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 430 events. 26/430 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1082 event pairs, 2 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 493. Up to 13 conditions per place. [2022-11-20 12:24:57,694 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 9 selfloop transitions, 5 changer transitions 0/245 dead transitions. [2022-11-20 12:24:57,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 245 transitions, 550 flow [2022-11-20 12:24:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:24:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:24:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1007 transitions. [2022-11-20 12:24:57,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9255514705882353 [2022-11-20 12:24:57,698 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1007 transitions. [2022-11-20 12:24:57,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1007 transitions. [2022-11-20 12:24:57,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:24:57,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1007 transitions. [2022-11-20 12:24:57,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:57,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:57,707 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:57,708 INFO L175 Difference]: Start difference. First operand has 253 places, 245 transitions, 518 flow. Second operand 4 states and 1007 transitions. [2022-11-20 12:24:57,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 245 transitions, 550 flow [2022-11-20 12:24:57,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 245 transitions, 527 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 12:24:57,713 INFO L231 Difference]: Finished difference. Result has 244 places, 243 transitions, 501 flow [2022-11-20 12:24:57,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=501, PETRI_PLACES=244, PETRI_TRANSITIONS=243} [2022-11-20 12:24:57,716 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -8 predicate places. [2022-11-20 12:24:57,717 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 243 transitions, 501 flow [2022-11-20 12:24:57,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:57,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:24:57,718 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:57,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:24:57,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:24:57,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:57,720 INFO L85 PathProgramCache]: Analyzing trace with hash 105661887, now seen corresponding path program 1 times [2022-11-20 12:24:57,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:57,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792052449] [2022-11-20 12:24:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:57,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:57,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792052449] [2022-11-20 12:24:57,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792052449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:57,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:57,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:57,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429909427] [2022-11-20 12:24:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:57,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:57,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:57,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:57,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 272 [2022-11-20 12:24:58,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 243 transitions, 501 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:58,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:24:58,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 272 [2022-11-20 12:24:58,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:24:58,123 INFO L130 PetriNetUnfolder]: 33/525 cut-off events. [2022-11-20 12:24:58,124 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-20 12:24:58,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 525 events. 33/525 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1261 event pairs, 2 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 580. Up to 23 conditions per place. [2022-11-20 12:24:58,128 INFO L137 encePairwiseOnDemand]: 268/272 looper letters, 10 selfloop transitions, 3 changer transitions 0/247 dead transitions. [2022-11-20 12:24:58,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 247 transitions, 538 flow [2022-11-20 12:24:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:24:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2022-11-20 12:24:58,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9473039215686274 [2022-11-20 12:24:58,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2022-11-20 12:24:58,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2022-11-20 12:24:58,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:24:58,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2022-11-20 12:24:58,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:58,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:58,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:58,143 INFO L175 Difference]: Start difference. First operand has 244 places, 243 transitions, 501 flow. Second operand 3 states and 773 transitions. [2022-11-20 12:24:58,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 247 transitions, 538 flow [2022-11-20 12:24:58,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 247 transitions, 528 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:24:58,152 INFO L231 Difference]: Finished difference. Result has 244 places, 244 transitions, 506 flow [2022-11-20 12:24:58,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=244, PETRI_TRANSITIONS=244} [2022-11-20 12:24:58,154 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -8 predicate places. [2022-11-20 12:24:58,154 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 244 transitions, 506 flow [2022-11-20 12:24:58,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:58,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:24:58,155 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:58,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:24:58,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:24:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1557842589, now seen corresponding path program 1 times [2022-11-20 12:24:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:58,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625621906] [2022-11-20 12:24:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:58,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:58,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:58,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625621906] [2022-11-20 12:24:58,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625621906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:58,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:58,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:24:58,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530056162] [2022-11-20 12:24:58,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:58,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:24:58,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:24:58,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:24:58,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 272 [2022-11-20 12:24:58,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 244 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:58,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:24:58,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 272 [2022-11-20 12:24:58,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:24:58,503 INFO L130 PetriNetUnfolder]: 51/834 cut-off events. [2022-11-20 12:24:58,503 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-20 12:24:58,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 834 events. 51/834 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3006 event pairs, 7 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 938. Up to 27 conditions per place. [2022-11-20 12:24:58,510 INFO L137 encePairwiseOnDemand]: 267/272 looper letters, 15 selfloop transitions, 5 changer transitions 0/252 dead transitions. [2022-11-20 12:24:58,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 569 flow [2022-11-20 12:24:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:24:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:24:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1271 transitions. [2022-11-20 12:24:58,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9345588235294118 [2022-11-20 12:24:58,514 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1271 transitions. [2022-11-20 12:24:58,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1271 transitions. [2022-11-20 12:24:58,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:24:58,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1271 transitions. [2022-11-20 12:24:58,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 254.2) internal successors, (1271), 5 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:58,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:58,524 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:58,524 INFO L175 Difference]: Start difference. First operand has 244 places, 244 transitions, 506 flow. Second operand 5 states and 1271 transitions. [2022-11-20 12:24:58,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 569 flow [2022-11-20 12:24:58,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:24:58,530 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 533 flow [2022-11-20 12:24:58,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2022-11-20 12:24:58,533 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -2 predicate places. [2022-11-20 12:24:58,533 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 533 flow [2022-11-20 12:24:58,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:58,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:24:58,535 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:58,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:24:58,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:24:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2105464912, now seen corresponding path program 1 times [2022-11-20 12:24:58,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:58,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714909599] [2022-11-20 12:24:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:58,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:00,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:00,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714909599] [2022-11-20 12:25:00,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714909599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:00,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:00,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 12:25:00,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64815906] [2022-11-20 12:25:00,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:00,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:25:00,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:00,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:25:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:25:00,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 272 [2022-11-20 12:25:00,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 533 flow. Second operand has 17 states, 17 states have (on average 185.41176470588235) internal successors, (3152), 17 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:00,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:00,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 272 [2022-11-20 12:25:00,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:02,654 INFO L130 PetriNetUnfolder]: 1599/6667 cut-off events. [2022-11-20 12:25:02,654 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-20 12:25:02,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9621 conditions, 6667 events. 1599/6667 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 58236 event pairs, 1290 based on Foata normal form. 0/6316 useless extension candidates. Maximal degree in co-relation 9614. Up to 2556 conditions per place. [2022-11-20 12:25:02,705 INFO L137 encePairwiseOnDemand]: 256/272 looper letters, 79 selfloop transitions, 20 changer transitions 0/269 dead transitions. [2022-11-20 12:25:02,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 269 transitions, 777 flow [2022-11-20 12:25:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:25:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:25:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2846 transitions. [2022-11-20 12:25:02,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6975490196078431 [2022-11-20 12:25:02,712 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2846 transitions. [2022-11-20 12:25:02,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2846 transitions. [2022-11-20 12:25:02,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:02,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2846 transitions. [2022-11-20 12:25:02,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 189.73333333333332) internal successors, (2846), 15 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:02,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:02,728 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:02,728 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 533 flow. Second operand 15 states and 2846 transitions. [2022-11-20 12:25:02,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 269 transitions, 777 flow [2022-11-20 12:25:02,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 777 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:25:02,738 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 640 flow [2022-11-20 12:25:02,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=640, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2022-11-20 12:25:02,741 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 18 predicate places. [2022-11-20 12:25:02,741 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 640 flow [2022-11-20 12:25:02,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 185.41176470588235) internal successors, (3152), 17 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:02,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:02,743 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:02,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:25:02,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:02,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:02,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1705964395, now seen corresponding path program 1 times [2022-11-20 12:25:02,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:02,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350315221] [2022-11-20 12:25:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:06,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:06,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350315221] [2022-11-20 12:25:06,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350315221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:06,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:06,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-20 12:25:06,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555187400] [2022-11-20 12:25:06,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:06,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 12:25:06,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:06,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 12:25:06,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-11-20 12:25:06,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 272 [2022-11-20 12:25:06,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 260 transitions, 640 flow. Second operand has 27 states, 27 states have (on average 171.92592592592592) internal successors, (4642), 27 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:06,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:06,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 272 [2022-11-20 12:25:06,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:11,277 INFO L130 PetriNetUnfolder]: 1457/6027 cut-off events. [2022-11-20 12:25:11,277 INFO L131 PetriNetUnfolder]: For 117/120 co-relation queries the response was YES. [2022-11-20 12:25:11,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 6027 events. 1457/6027 cut-off events. For 117/120 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 51219 event pairs, 1160 based on Foata normal form. 2/5752 useless extension candidates. Maximal degree in co-relation 8850. Up to 2311 conditions per place. [2022-11-20 12:25:11,334 INFO L137 encePairwiseOnDemand]: 241/272 looper letters, 88 selfloop transitions, 45 changer transitions 0/295 dead transitions. [2022-11-20 12:25:11,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 295 transitions, 1000 flow [2022-11-20 12:25:11,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:25:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 12:25:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4724 transitions. [2022-11-20 12:25:11,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6432461873638344 [2022-11-20 12:25:11,346 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4724 transitions. [2022-11-20 12:25:11,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4724 transitions. [2022-11-20 12:25:11,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:11,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4724 transitions. [2022-11-20 12:25:11,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 174.96296296296296) internal successors, (4724), 27 states have internal predecessors, (4724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:11,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 272.0) internal successors, (7616), 28 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:11,391 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 272.0) internal successors, (7616), 28 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:11,392 INFO L175 Difference]: Start difference. First operand has 270 places, 260 transitions, 640 flow. Second operand 27 states and 4724 transitions. [2022-11-20 12:25:11,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 295 transitions, 1000 flow [2022-11-20 12:25:11,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 295 transitions, 987 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:25:11,403 INFO L231 Difference]: Finished difference. Result has 301 places, 282 transitions, 866 flow [2022-11-20 12:25:11,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=866, PETRI_PLACES=301, PETRI_TRANSITIONS=282} [2022-11-20 12:25:11,405 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 49 predicate places. [2022-11-20 12:25:11,406 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 282 transitions, 866 flow [2022-11-20 12:25:11,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 171.92592592592592) internal successors, (4642), 27 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:11,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:11,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:11,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:25:11,408 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:11,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash 889495684, now seen corresponding path program 1 times [2022-11-20 12:25:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:11,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617064493] [2022-11-20 12:25:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:11,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:13,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:13,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617064493] [2022-11-20 12:25:13,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617064493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:13,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:13,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 12:25:13,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839835497] [2022-11-20 12:25:13,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:13,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:25:13,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:25:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:25:13,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 272 [2022-11-20 12:25:13,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 282 transitions, 866 flow. Second operand has 18 states, 18 states have (on average 176.72222222222223) internal successors, (3181), 18 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:13,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:13,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 272 [2022-11-20 12:25:13,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:16,083 INFO L130 PetriNetUnfolder]: 1555/6501 cut-off events. [2022-11-20 12:25:16,083 INFO L131 PetriNetUnfolder]: For 421/425 co-relation queries the response was YES. [2022-11-20 12:25:16,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9784 conditions, 6501 events. 1555/6501 cut-off events. For 421/425 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 57302 event pairs, 723 based on Foata normal form. 3/6169 useless extension candidates. Maximal degree in co-relation 9758. Up to 2403 conditions per place. [2022-11-20 12:25:16,176 INFO L137 encePairwiseOnDemand]: 255/272 looper letters, 96 selfloop transitions, 24 changer transitions 0/289 dead transitions. [2022-11-20 12:25:16,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 289 transitions, 1126 flow [2022-11-20 12:25:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:25:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:25:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2707 transitions. [2022-11-20 12:25:16,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6634803921568627 [2022-11-20 12:25:16,184 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2707 transitions. [2022-11-20 12:25:16,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2707 transitions. [2022-11-20 12:25:16,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:16,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2707 transitions. [2022-11-20 12:25:16,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 180.46666666666667) internal successors, (2707), 15 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:16,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:16,199 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:16,200 INFO L175 Difference]: Start difference. First operand has 301 places, 282 transitions, 866 flow. Second operand 15 states and 2707 transitions. [2022-11-20 12:25:16,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 289 transitions, 1126 flow [2022-11-20 12:25:16,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 289 transitions, 1078 flow, removed 8 selfloop flow, removed 14 redundant places. [2022-11-20 12:25:16,210 INFO L231 Difference]: Finished difference. Result has 299 places, 279 transitions, 856 flow [2022-11-20 12:25:16,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=856, PETRI_PLACES=299, PETRI_TRANSITIONS=279} [2022-11-20 12:25:16,214 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 47 predicate places. [2022-11-20 12:25:16,214 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 279 transitions, 856 flow [2022-11-20 12:25:16,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 176.72222222222223) internal successors, (3181), 18 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:16,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:16,216 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:16,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:25:16,217 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:16,218 INFO L85 PathProgramCache]: Analyzing trace with hash -983440833, now seen corresponding path program 1 times [2022-11-20 12:25:16,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:16,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765642294] [2022-11-20 12:25:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:16,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:20,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:20,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765642294] [2022-11-20 12:25:20,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765642294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:20,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:20,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-20 12:25:20,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867397961] [2022-11-20 12:25:20,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:20,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:25:20,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:25:20,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:25:20,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 272 [2022-11-20 12:25:20,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 279 transitions, 856 flow. Second operand has 29 states, 29 states have (on average 163.06896551724137) internal successors, (4729), 29 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:20,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:20,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 272 [2022-11-20 12:25:20,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:24,849 INFO L130 PetriNetUnfolder]: 782/3181 cut-off events. [2022-11-20 12:25:24,849 INFO L131 PetriNetUnfolder]: For 336/339 co-relation queries the response was YES. [2022-11-20 12:25:24,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5052 conditions, 3181 events. 782/3181 cut-off events. For 336/339 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 22072 event pairs, 320 based on Foata normal form. 3/3026 useless extension candidates. Maximal degree in co-relation 5028. Up to 1081 conditions per place. [2022-11-20 12:25:24,878 INFO L137 encePairwiseOnDemand]: 243/272 looper letters, 114 selfloop transitions, 44 changer transitions 0/303 dead transitions. [2022-11-20 12:25:24,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 303 transitions, 1239 flow [2022-11-20 12:25:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:25:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 12:25:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4487 transitions. [2022-11-20 12:25:24,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6109749455337691 [2022-11-20 12:25:24,889 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4487 transitions. [2022-11-20 12:25:24,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4487 transitions. [2022-11-20 12:25:24,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:24,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4487 transitions. [2022-11-20 12:25:24,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 166.1851851851852) internal successors, (4487), 27 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:24,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 272.0) internal successors, (7616), 28 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:24,916 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 272.0) internal successors, (7616), 28 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:24,916 INFO L175 Difference]: Start difference. First operand has 299 places, 279 transitions, 856 flow. Second operand 27 states and 4487 transitions. [2022-11-20 12:25:24,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 303 transitions, 1239 flow [2022-11-20 12:25:24,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 303 transitions, 1173 flow, removed 1 selfloop flow, removed 21 redundant places. [2022-11-20 12:25:24,925 INFO L231 Difference]: Finished difference. Result has 298 places, 270 transitions, 866 flow [2022-11-20 12:25:24,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=866, PETRI_PLACES=298, PETRI_TRANSITIONS=270} [2022-11-20 12:25:24,926 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 46 predicate places. [2022-11-20 12:25:24,926 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 270 transitions, 866 flow [2022-11-20 12:25:24,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 163.06896551724137) internal successors, (4729), 29 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:24,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:24,928 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:25:24,929 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash -868849620, now seen corresponding path program 1 times [2022-11-20 12:25:24,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:24,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281532535] [2022-11-20 12:25:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:25,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:25,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281532535] [2022-11-20 12:25:25,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281532535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:25,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:25,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:25:25,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342236018] [2022-11-20 12:25:25,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:25,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:25:25,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:25,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:25:25,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:25:25,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 272 [2022-11-20 12:25:25,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 270 transitions, 866 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:25,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:25,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 272 [2022-11-20 12:25:25,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:25,321 INFO L130 PetriNetUnfolder]: 60/879 cut-off events. [2022-11-20 12:25:25,321 INFO L131 PetriNetUnfolder]: For 150/151 co-relation queries the response was YES. [2022-11-20 12:25:25,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 879 events. 60/879 cut-off events. For 150/151 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3375 event pairs, 9 based on Foata normal form. 10/855 useless extension candidates. Maximal degree in co-relation 1245. Up to 39 conditions per place. [2022-11-20 12:25:25,330 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 12 selfloop transitions, 6 changer transitions 0/272 dead transitions. [2022-11-20 12:25:25,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 272 transitions, 909 flow [2022-11-20 12:25:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:25:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:25:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2022-11-20 12:25:25,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9301470588235294 [2022-11-20 12:25:25,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2022-11-20 12:25:25,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2022-11-20 12:25:25,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:25,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2022-11-20 12:25:25,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:25,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:25,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:25,338 INFO L175 Difference]: Start difference. First operand has 298 places, 270 transitions, 866 flow. Second operand 3 states and 759 transitions. [2022-11-20 12:25:25,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 272 transitions, 909 flow [2022-11-20 12:25:25,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 272 transitions, 831 flow, removed 2 selfloop flow, removed 23 redundant places. [2022-11-20 12:25:25,346 INFO L231 Difference]: Finished difference. Result has 277 places, 270 transitions, 800 flow [2022-11-20 12:25:25,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=800, PETRI_PLACES=277, PETRI_TRANSITIONS=270} [2022-11-20 12:25:25,349 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 25 predicate places. [2022-11-20 12:25:25,349 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 270 transitions, 800 flow [2022-11-20 12:25:25,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:25,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:25,350 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:25,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:25:25,350 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:25,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:25,351 INFO L85 PathProgramCache]: Analyzing trace with hash 326822008, now seen corresponding path program 1 times [2022-11-20 12:25:25,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:25,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050409622] [2022-11-20 12:25:25,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:25,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:28,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:28,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050409622] [2022-11-20 12:25:28,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050409622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:28,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:28,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-20 12:25:28,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187242810] [2022-11-20 12:25:28,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:28,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:25:28,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:28,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:25:28,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:25:28,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 272 [2022-11-20 12:25:28,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 270 transitions, 800 flow. Second operand has 29 states, 29 states have (on average 167.68965517241378) internal successors, (4863), 29 states have internal predecessors, (4863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:28,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:28,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 272 [2022-11-20 12:25:28,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:31,438 INFO L130 PetriNetUnfolder]: 327/1557 cut-off events. [2022-11-20 12:25:31,438 INFO L131 PetriNetUnfolder]: For 300/304 co-relation queries the response was YES. [2022-11-20 12:25:31,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 1557 events. 327/1557 cut-off events. For 300/304 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7948 event pairs, 29 based on Foata normal form. 0/1504 useless extension candidates. Maximal degree in co-relation 2872. Up to 359 conditions per place. [2022-11-20 12:25:31,451 INFO L137 encePairwiseOnDemand]: 241/272 looper letters, 136 selfloop transitions, 44 changer transitions 0/325 dead transitions. [2022-11-20 12:25:31,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 325 transitions, 1333 flow [2022-11-20 12:25:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 12:25:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 12:25:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4778 transitions. [2022-11-20 12:25:31,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6273634453781513 [2022-11-20 12:25:31,460 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4778 transitions. [2022-11-20 12:25:31,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4778 transitions. [2022-11-20 12:25:31,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:31,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4778 transitions. [2022-11-20 12:25:31,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 170.64285714285714) internal successors, (4778), 28 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:31,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 272.0) internal successors, (7888), 29 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:31,485 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 272.0) internal successors, (7888), 29 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:31,485 INFO L175 Difference]: Start difference. First operand has 277 places, 270 transitions, 800 flow. Second operand 28 states and 4778 transitions. [2022-11-20 12:25:31,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 325 transitions, 1333 flow [2022-11-20 12:25:31,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 325 transitions, 1327 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:25:31,494 INFO L231 Difference]: Finished difference. Result has 308 places, 277 transitions, 927 flow [2022-11-20 12:25:31,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=927, PETRI_PLACES=308, PETRI_TRANSITIONS=277} [2022-11-20 12:25:31,495 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 56 predicate places. [2022-11-20 12:25:31,495 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 277 transitions, 927 flow [2022-11-20 12:25:31,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 167.68965517241378) internal successors, (4863), 29 states have internal predecessors, (4863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:31,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:31,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:31,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:25:31,498 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:31,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1481885115, now seen corresponding path program 1 times [2022-11-20 12:25:31,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:31,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340167770] [2022-11-20 12:25:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:31,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:38,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:38,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340167770] [2022-11-20 12:25:38,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340167770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:38,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:38,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 12:25:38,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058064735] [2022-11-20 12:25:38,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:38,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 12:25:38,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:38,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 12:25:38,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 12:25:38,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 272 [2022-11-20 12:25:38,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 277 transitions, 927 flow. Second operand has 36 states, 36 states have (on average 155.47222222222223) internal successors, (5597), 36 states have internal predecessors, (5597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:38,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:38,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 272 [2022-11-20 12:25:38,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:43,558 INFO L130 PetriNetUnfolder]: 407/1885 cut-off events. [2022-11-20 12:25:43,558 INFO L131 PetriNetUnfolder]: For 573/577 co-relation queries the response was YES. [2022-11-20 12:25:43,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3685 conditions, 1885 events. 407/1885 cut-off events. For 573/577 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 10324 event pairs, 37 based on Foata normal form. 0/1827 useless extension candidates. Maximal degree in co-relation 3658. Up to 378 conditions per place. [2022-11-20 12:25:43,573 INFO L137 encePairwiseOnDemand]: 235/272 looper letters, 164 selfloop transitions, 54 changer transitions 0/354 dead transitions. [2022-11-20 12:25:43,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 354 transitions, 1586 flow [2022-11-20 12:25:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 12:25:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 12:25:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5247 transitions. [2022-11-20 12:25:43,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5845588235294118 [2022-11-20 12:25:43,583 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5247 transitions. [2022-11-20 12:25:43,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5247 transitions. [2022-11-20 12:25:43,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:43,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5247 transitions. [2022-11-20 12:25:43,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 159.0) internal successors, (5247), 33 states have internal predecessors, (5247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:43,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 272.0) internal successors, (9248), 34 states have internal predecessors, (9248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:43,607 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 272.0) internal successors, (9248), 34 states have internal predecessors, (9248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:43,608 INFO L175 Difference]: Start difference. First operand has 308 places, 277 transitions, 927 flow. Second operand 33 states and 5247 transitions. [2022-11-20 12:25:43,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 354 transitions, 1586 flow [2022-11-20 12:25:43,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 354 transitions, 1514 flow, removed 0 selfloop flow, removed 21 redundant places. [2022-11-20 12:25:43,621 INFO L231 Difference]: Finished difference. Result has 324 places, 284 transitions, 1010 flow [2022-11-20 12:25:43,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1010, PETRI_PLACES=324, PETRI_TRANSITIONS=284} [2022-11-20 12:25:43,622 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 72 predicate places. [2022-11-20 12:25:43,622 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 284 transitions, 1010 flow [2022-11-20 12:25:43,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 155.47222222222223) internal successors, (5597), 36 states have internal predecessors, (5597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:43,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:43,624 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:43,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:25:43,625 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:43,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:43,625 INFO L85 PathProgramCache]: Analyzing trace with hash 396256198, now seen corresponding path program 1 times [2022-11-20 12:25:43,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:43,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813195855] [2022-11-20 12:25:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:43,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:53,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:53,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813195855] [2022-11-20 12:25:53,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813195855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:53,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:53,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-11-20 12:25:53,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250891440] [2022-11-20 12:25:53,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:53,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 12:25:53,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:53,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 12:25:53,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1818, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 12:25:53,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 272 [2022-11-20 12:25:53,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 284 transitions, 1010 flow. Second operand has 45 states, 45 states have (on average 136.35555555555555) internal successors, (6136), 45 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:53,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:53,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 272 [2022-11-20 12:25:53,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:26:16,340 INFO L130 PetriNetUnfolder]: 5230/13018 cut-off events. [2022-11-20 12:26:16,340 INFO L131 PetriNetUnfolder]: For 3586/3587 co-relation queries the response was YES. [2022-11-20 12:26:16,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26680 conditions, 13018 events. 5230/13018 cut-off events. For 3586/3587 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 101165 event pairs, 952 based on Foata normal form. 0/12147 useless extension candidates. Maximal degree in co-relation 26648. Up to 4151 conditions per place. [2022-11-20 12:26:16,442 INFO L137 encePairwiseOnDemand]: 218/272 looper letters, 535 selfloop transitions, 169 changer transitions 55/878 dead transitions. [2022-11-20 12:26:16,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 878 transitions, 4202 flow [2022-11-20 12:26:16,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-20 12:26:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2022-11-20 12:26:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 11054 transitions. [2022-11-20 12:26:16,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5277883880825057 [2022-11-20 12:26:16,459 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 11054 transitions. [2022-11-20 12:26:16,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 11054 transitions. [2022-11-20 12:26:16,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:26:16,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 11054 transitions. [2022-11-20 12:26:16,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 143.55844155844156) internal successors, (11054), 77 states have internal predecessors, (11054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:16,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 272.0) internal successors, (21216), 78 states have internal predecessors, (21216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:16,507 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 272.0) internal successors, (21216), 78 states have internal predecessors, (21216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:16,507 INFO L175 Difference]: Start difference. First operand has 324 places, 284 transitions, 1010 flow. Second operand 77 states and 11054 transitions. [2022-11-20 12:26:16,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 878 transitions, 4202 flow [2022-11-20 12:26:16,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 878 transitions, 4060 flow, removed 6 selfloop flow, removed 25 redundant places. [2022-11-20 12:26:16,550 INFO L231 Difference]: Finished difference. Result has 431 places, 417 transitions, 2229 flow [2022-11-20 12:26:16,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=2229, PETRI_PLACES=431, PETRI_TRANSITIONS=417} [2022-11-20 12:26:16,551 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 179 predicate places. [2022-11-20 12:26:16,551 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 417 transitions, 2229 flow [2022-11-20 12:26:16,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 136.35555555555555) internal successors, (6136), 45 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:16,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:26:16,553 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:16,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:26:16,553 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:26:16,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:16,554 INFO L85 PathProgramCache]: Analyzing trace with hash 808125096, now seen corresponding path program 2 times [2022-11-20 12:26:16,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:16,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202919849] [2022-11-20 12:26:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:16,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat