./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R --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 fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- 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-38b53e6 [2022-11-25 16:42:43,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:42:43,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:42:43,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:42:43,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:42:43,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:42:43,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:42:43,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:42:43,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:42:43,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:42:43,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:42:43,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:42:43,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:42:43,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:42:43,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:42:43,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:42:43,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:42:43,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:42:43,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:42:44,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:42:44,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:42:44,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:42:44,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:42:44,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:42:44,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:42:44,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:42:44,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:42:44,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:42:44,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:42:44,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:42:44,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:42:44,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:42:44,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:42:44,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:42:44,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:42:44,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:42:44,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:42:44,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:42:44,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:42:44,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:42:44,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:42:44,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:42:44,081 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:42:44,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:42:44,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:42:44,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:42:44,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:42:44,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:42:44,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:42:44,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:42:44,086 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:42:44,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:42:44,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:42:44,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:42:44,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:42:44,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:42:44,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:42:44,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:42:44,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:42:44,090 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:42:44,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:42:44,091 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:42:44,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:42:44,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:42:44,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:42:44,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:42:44,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:42:44,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:42:44,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:42:44,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:42:44,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:42:44,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:42:44,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:42:44,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:42:44,096 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:42:44,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:42:44,096 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2022-11-25 16:42:44,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:42:44,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:42:44,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:42:44,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:42:44,429 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:42:44,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-25 16:42:47,598 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:42:48,008 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:42:48,009 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-25 16:42:48,039 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/data/03a2e5892/a3b130a6793448eeb7fb27bea11dac7a/FLAGeb8688bc3 [2022-11-25 16:42:48,065 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/data/03a2e5892/a3b130a6793448eeb7fb27bea11dac7a [2022-11-25 16:42:48,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:42:48,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:42:48,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:42:48,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:42:48,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:42:48,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:48" (1/1) ... [2022-11-25 16:42:48,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1345dcc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:48, skipping insertion in model container [2022-11-25 16:42:48,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:48" (1/1) ... [2022-11-25 16:42:48,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:42:48,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:42:49,110 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_ab90ecf9-5c00-4306-b5f3-aa102a95548d/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-25 16:42:49,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:42:49,165 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:42:49,217 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_ab90ecf9-5c00-4306-b5f3-aa102a95548d/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-25 16:42:49,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:42:49,409 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:42:49,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49 WrapperNode [2022-11-25 16:42:49,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:42:49,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:42:49,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:42:49,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:42:49,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,473 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2022-11-25 16:42:49,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:42:49,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:42:49,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:42:49,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:42:49,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,515 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:42:49,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:42:49,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:42:49,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:42:49,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (1/1) ... [2022-11-25 16:42:49,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:42:49,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:42:49,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:42:49,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:42:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:42:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:42:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:42:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:42:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 16:42:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:42:49,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:42:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-25 16:42:49,629 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-25 16:42:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:42:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:42:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:42:49,632 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:42:50,014 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:42:50,016 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:42:50,324 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:42:50,348 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:42:50,348 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 16:42:50,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:50 BoogieIcfgContainer [2022-11-25 16:42:50,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:42:50,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:42:50,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:42:50,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:42:50,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:42:48" (1/3) ... [2022-11-25 16:42:50,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea32110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:50, skipping insertion in model container [2022-11-25 16:42:50,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:49" (2/3) ... [2022-11-25 16:42:50,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea32110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:50, skipping insertion in model container [2022-11-25 16:42:50,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:50" (3/3) ... [2022-11-25 16:42:50,367 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2022-11-25 16:42:50,377 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:42:50,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:42:50,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 16:42:50,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:42:50,513 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 16:42:50,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 406 flow [2022-11-25 16:42:50,716 INFO L130 PetriNetUnfolder]: 10/240 cut-off events. [2022-11-25 16:42:50,717 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:42:50,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 10/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-11-25 16:42:50,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 195 transitions, 406 flow [2022-11-25 16:42:50,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 181 transitions, 374 flow [2022-11-25 16:42:50,740 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:42:50,766 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 181 transitions, 374 flow [2022-11-25 16:42:50,771 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 181 transitions, 374 flow [2022-11-25 16:42:50,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 181 transitions, 374 flow [2022-11-25 16:42:50,849 INFO L130 PetriNetUnfolder]: 7/217 cut-off events. [2022-11-25 16:42:50,849 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:42:50,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 217 events. 7/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 129. Up to 4 conditions per place. [2022-11-25 16:42:50,855 INFO L119 LiptonReduction]: Number of co-enabled transitions 2884 [2022-11-25 16:43:42,903 INFO L134 LiptonReduction]: Checked pairs total: 6041 [2022-11-25 16:43:42,903 INFO L136 LiptonReduction]: Total number of compositions: 196 [2022-11-25 16:43:42,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:43:42,926 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;@3f8ee98c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:43:42,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-25 16:43:42,928 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 16:43:42,929 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:43:42,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:42,930 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 16:43:42,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:43:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:42,936 INFO L85 PathProgramCache]: Analyzing trace with hash 666, now seen corresponding path program 1 times [2022-11-25 16:43:42,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:42,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806503906] [2022-11-25 16:43:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:42,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:43,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:43,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806503906] [2022-11-25 16:43:43,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806503906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:43,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:43,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 16:43:43,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036624393] [2022-11-25 16:43:43,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:43,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:43:43,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:43:43,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:43:43,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 391 [2022-11-25 16:43:43,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:43,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:43,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 391 [2022-11-25 16:43:43,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:43,415 INFO L130 PetriNetUnfolder]: 217/417 cut-off events. [2022-11-25 16:43:43,415 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-25 16:43:43,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 417 events. 217/417 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1950 event pairs, 216 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 736. Up to 391 conditions per place. [2022-11-25 16:43:43,420 INFO L137 encePairwiseOnDemand]: 388/391 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2022-11-25 16:43:43,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2022-11-25 16:43:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:43:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 16:43:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 386 transitions. [2022-11-25 16:43:43,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4936061381074169 [2022-11-25 16:43:43,440 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 386 transitions. [2022-11-25 16:43:43,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 386 transitions. [2022-11-25 16:43:43,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:43,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 386 transitions. [2022-11-25 16:43:43,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 193.0) internal successors, (386), 2 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:43,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 391.0) internal successors, (1173), 3 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:43,456 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 391.0) internal successors, (1173), 3 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:43,457 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 386 transitions. [2022-11-25 16:43:43,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2022-11-25 16:43:43,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 16:43:43,465 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2022-11-25 16:43:43,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2022-11-25 16:43:43,473 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2022-11-25 16:43:43,474 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2022-11-25 16:43:43,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:43,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:43,475 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:43:43,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:43:43,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:43:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash 20479209, now seen corresponding path program 1 times [2022-11-25 16:43:43,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:43,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410620593] [2022-11-25 16:43:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:43,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:44,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:44,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410620593] [2022-11-25 16:43:44,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410620593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:44,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:44,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:43:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650327998] [2022-11-25 16:43:44,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:44,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:44,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:44,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:44,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 391 [2022-11-25 16:43:44,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:44,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:44,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 391 [2022-11-25 16:43:44,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:44,557 INFO L130 PetriNetUnfolder]: 344/667 cut-off events. [2022-11-25 16:43:44,557 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:43:44,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 667 events. 344/667 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3456 event pairs, 183 based on Foata normal form. 0/610 useless extension candidates. Maximal degree in co-relation 1285. Up to 453 conditions per place. [2022-11-25 16:43:44,563 INFO L137 encePairwiseOnDemand]: 383/391 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2022-11-25 16:43:44,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2022-11-25 16:43:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:43:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2022-11-25 16:43:44,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.453537936913896 [2022-11-25 16:43:44,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2022-11-25 16:43:44,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2022-11-25 16:43:44,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:44,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2022-11-25 16:43:44,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:44,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:44,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:44,576 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 532 transitions. [2022-11-25 16:43:44,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2022-11-25 16:43:44,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:43:44,578 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2022-11-25 16:43:44,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2022-11-25 16:43:44,580 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2022-11-25 16:43:44,580 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2022-11-25 16:43:44,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:44,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:44,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:43:44,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:43:44,581 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:43:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:44,582 INFO L85 PathProgramCache]: Analyzing trace with hash 634855780, now seen corresponding path program 1 times [2022-11-25 16:43:44,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:44,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935573745] [2022-11-25 16:43:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:44,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:44,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:44,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935573745] [2022-11-25 16:43:44,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935573745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:44,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:44,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:43:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075990907] [2022-11-25 16:43:44,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:44,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:44,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:44,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:44,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:45,038 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 391 [2022-11-25 16:43:45,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:45,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:45,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 391 [2022-11-25 16:43:45,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:45,346 INFO L130 PetriNetUnfolder]: 483/887 cut-off events. [2022-11-25 16:43:45,346 INFO L131 PetriNetUnfolder]: For 388/397 co-relation queries the response was YES. [2022-11-25 16:43:45,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 887 events. 483/887 cut-off events. For 388/397 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4510 event pairs, 257 based on Foata normal form. 26/905 useless extension candidates. Maximal degree in co-relation 2321. Up to 669 conditions per place. [2022-11-25 16:43:45,353 INFO L137 encePairwiseOnDemand]: 384/391 looper letters, 35 selfloop transitions, 9 changer transitions 2/48 dead transitions. [2022-11-25 16:43:45,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2022-11-25 16:43:45,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:43:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2022-11-25 16:43:45,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45439045183290705 [2022-11-25 16:43:45,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2022-11-25 16:43:45,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2022-11-25 16:43:45,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:45,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2022-11-25 16:43:45,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:45,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:45,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:45,365 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 533 transitions. [2022-11-25 16:43:45,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2022-11-25 16:43:45,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:43:45,370 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2022-11-25 16:43:45,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2022-11-25 16:43:45,371 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2022-11-25 16:43:45,371 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2022-11-25 16:43:45,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:45,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:45,372 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:45,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:43:45,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:43:45,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:45,374 INFO L85 PathProgramCache]: Analyzing trace with hash -316436637, now seen corresponding path program 1 times [2022-11-25 16:43:45,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:45,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818322224] [2022-11-25 16:43:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:45,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:45,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:45,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818322224] [2022-11-25 16:43:45,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818322224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:45,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:45,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:43:45,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253264957] [2022-11-25 16:43:45,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:45,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:45,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:45,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:45,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:45,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 391 [2022-11-25 16:43:45,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:45,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:45,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 391 [2022-11-25 16:43:45,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:45,627 INFO L130 PetriNetUnfolder]: 105/208 cut-off events. [2022-11-25 16:43:45,627 INFO L131 PetriNetUnfolder]: For 168/198 co-relation queries the response was YES. [2022-11-25 16:43:45,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 208 events. 105/208 cut-off events. For 168/198 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 794 event pairs, 23 based on Foata normal form. 23/221 useless extension candidates. Maximal degree in co-relation 539. Up to 149 conditions per place. [2022-11-25 16:43:45,629 INFO L137 encePairwiseOnDemand]: 389/391 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2022-11-25 16:43:45,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2022-11-25 16:43:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:43:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2022-11-25 16:43:45,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4680306905370844 [2022-11-25 16:43:45,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2022-11-25 16:43:45,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2022-11-25 16:43:45,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:45,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2022-11-25 16:43:45,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:45,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:45,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:45,641 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 549 transitions. [2022-11-25 16:43:45,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2022-11-25 16:43:45,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-11-25 16:43:45,643 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2022-11-25 16:43:45,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-11-25 16:43:45,644 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2022-11-25 16:43:45,645 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2022-11-25 16:43:45,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:45,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:45,646 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:45,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:43:45,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:43:45,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1187886194, now seen corresponding path program 1 times [2022-11-25 16:43:45,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:45,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742242461] [2022-11-25 16:43:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:45,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:46,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:46,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742242461] [2022-11-25 16:43:46,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742242461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:46,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:46,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:43:46,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164383174] [2022-11-25 16:43:46,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:46,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:43:46,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:46,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:43:46,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:43:46,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 391 [2022-11-25 16:43:46,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:46,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:46,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 391 [2022-11-25 16:43:46,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:47,031 INFO L130 PetriNetUnfolder]: 110/249 cut-off events. [2022-11-25 16:43:47,031 INFO L131 PetriNetUnfolder]: For 70/72 co-relation queries the response was YES. [2022-11-25 16:43:47,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 249 events. 110/249 cut-off events. For 70/72 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1026 event pairs, 47 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 568. Up to 120 conditions per place. [2022-11-25 16:43:47,033 INFO L137 encePairwiseOnDemand]: 385/391 looper letters, 27 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2022-11-25 16:43:47,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 165 flow [2022-11-25 16:43:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:43:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:43:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 889 transitions. [2022-11-25 16:43:47,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4547314578005115 [2022-11-25 16:43:47,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 889 transitions. [2022-11-25 16:43:47,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 889 transitions. [2022-11-25 16:43:47,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:47,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 889 transitions. [2022-11-25 16:43:47,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:47,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 391.0) internal successors, (2346), 6 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:47,047 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 391.0) internal successors, (2346), 6 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:47,047 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 5 states and 889 transitions. [2022-11-25 16:43:47,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 165 flow [2022-11-25 16:43:47,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:43:47,049 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 92 flow [2022-11-25 16:43:47,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2022-11-25 16:43:47,050 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2022-11-25 16:43:47,050 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 92 flow [2022-11-25 16:43:47,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:47,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:47,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:47,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:43:47,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:43:47,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:47,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1865653954, now seen corresponding path program 2 times [2022-11-25 16:43:47,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:47,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393313175] [2022-11-25 16:43:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:47,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:47,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:47,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393313175] [2022-11-25 16:43:47,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393313175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:47,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:47,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:43:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729503928] [2022-11-25 16:43:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:47,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:43:47,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:43:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:43:47,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 391 [2022-11-25 16:43:47,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:47,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:47,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 391 [2022-11-25 16:43:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:48,159 INFO L130 PetriNetUnfolder]: 112/264 cut-off events. [2022-11-25 16:43:48,160 INFO L131 PetriNetUnfolder]: For 133/139 co-relation queries the response was YES. [2022-11-25 16:43:48,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 264 events. 112/264 cut-off events. For 133/139 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1167 event pairs, 37 based on Foata normal form. 9/263 useless extension candidates. Maximal degree in co-relation 706. Up to 124 conditions per place. [2022-11-25 16:43:48,162 INFO L137 encePairwiseOnDemand]: 385/391 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2022-11-25 16:43:48,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 211 flow [2022-11-25 16:43:48,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:43:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:43:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 888 transitions. [2022-11-25 16:43:48,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4542199488491049 [2022-11-25 16:43:48,166 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 888 transitions. [2022-11-25 16:43:48,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 888 transitions. [2022-11-25 16:43:48,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:48,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 888 transitions. [2022-11-25 16:43:48,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.6) internal successors, (888), 5 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 391.0) internal successors, (2346), 6 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,174 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 391.0) internal successors, (2346), 6 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,174 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 92 flow. Second operand 5 states and 888 transitions. [2022-11-25 16:43:48,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 211 flow [2022-11-25 16:43:48,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:43:48,176 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 124 flow [2022-11-25 16:43:48,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2022-11-25 16:43:48,177 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2022-11-25 16:43:48,177 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 124 flow [2022-11-25 16:43:48,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:48,178 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:48,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:43:48,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:43:48,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:48,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1603121662, now seen corresponding path program 3 times [2022-11-25 16:43:48,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:48,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687954700] [2022-11-25 16:43:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:48,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:51,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:51,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687954700] [2022-11-25 16:43:51,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687954700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:51,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:51,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 16:43:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843552388] [2022-11-25 16:43:51,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:51,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 16:43:51,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:51,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 16:43:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-25 16:43:53,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:43:54,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 124 flow. Second operand has 14 states, 14 states have (on average 150.5) internal successors, (2107), 14 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:54,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:54,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:43:54,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:55,913 INFO L130 PetriNetUnfolder]: 267/541 cut-off events. [2022-11-25 16:43:55,914 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2022-11-25 16:43:55,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 541 events. 267/541 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2395 event pairs, 41 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 1653. Up to 260 conditions per place. [2022-11-25 16:43:55,918 INFO L137 encePairwiseOnDemand]: 377/391 looper letters, 78 selfloop transitions, 25 changer transitions 0/103 dead transitions. [2022-11-25 16:43:55,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 103 transitions, 612 flow [2022-11-25 16:43:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:43:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 16:43:55,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2181 transitions. [2022-11-25 16:43:55,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39842893679210817 [2022-11-25 16:43:55,927 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2181 transitions. [2022-11-25 16:43:55,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2181 transitions. [2022-11-25 16:43:55,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:55,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2181 transitions. [2022-11-25 16:43:55,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 155.78571428571428) internal successors, (2181), 14 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:55,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 391.0) internal successors, (5865), 15 states have internal predecessors, (5865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:55,946 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 391.0) internal successors, (5865), 15 states have internal predecessors, (5865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:55,946 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 124 flow. Second operand 14 states and 2181 transitions. [2022-11-25 16:43:55,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 103 transitions, 612 flow [2022-11-25 16:43:55,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 103 transitions, 586 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 16:43:55,951 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 316 flow [2022-11-25 16:43:55,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=316, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2022-11-25 16:43:55,952 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2022-11-25 16:43:55,952 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 316 flow [2022-11-25 16:43:55,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 150.5) internal successors, (2107), 14 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:55,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:55,953 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:55,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:43:55,954 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:43:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash -696741474, now seen corresponding path program 4 times [2022-11-25 16:43:55,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:55,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62476816] [2022-11-25 16:43:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:55,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:58,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:58,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62476816] [2022-11-25 16:43:58,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62476816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:58,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:58,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:43:58,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368873789] [2022-11-25 16:43:58,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:58,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:43:58,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:43:58,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:44:01,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:44:01,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 316 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:01,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:01,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:44:01,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:03,470 INFO L130 PetriNetUnfolder]: 305/638 cut-off events. [2022-11-25 16:44:03,470 INFO L131 PetriNetUnfolder]: For 995/995 co-relation queries the response was YES. [2022-11-25 16:44:03,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 638 events. 305/638 cut-off events. For 995/995 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3040 event pairs, 62 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 2379. Up to 339 conditions per place. [2022-11-25 16:44:03,478 INFO L137 encePairwiseOnDemand]: 376/391 looper letters, 97 selfloop transitions, 28 changer transitions 0/125 dead transitions. [2022-11-25 16:44:03,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 125 transitions, 947 flow [2022-11-25 16:44:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 16:44:03,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 16:44:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2029 transitions. [2022-11-25 16:44:03,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3991737163092662 [2022-11-25 16:44:03,485 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2029 transitions. [2022-11-25 16:44:03,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2029 transitions. [2022-11-25 16:44:03,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:03,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2029 transitions. [2022-11-25 16:44:03,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 156.07692307692307) internal successors, (2029), 13 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:03,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 391.0) internal successors, (5474), 14 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:03,502 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 391.0) internal successors, (5474), 14 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:03,502 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 316 flow. Second operand 13 states and 2029 transitions. [2022-11-25 16:44:03,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 125 transitions, 947 flow [2022-11-25 16:44:03,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 125 transitions, 921 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-11-25 16:44:03,509 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 511 flow [2022-11-25 16:44:03,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=511, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2022-11-25 16:44:03,510 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2022-11-25 16:44:03,510 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 511 flow [2022-11-25 16:44:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:03,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:03,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:03,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:44:03,512 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:44:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:03,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1995048204, now seen corresponding path program 5 times [2022-11-25 16:44:03,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:03,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144265226] [2022-11-25 16:44:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:03,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:06,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:06,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144265226] [2022-11-25 16:44:06,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144265226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:06,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:06,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:44:06,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064044532] [2022-11-25 16:44:06,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:06,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:44:06,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:06,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:44:06,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:44:09,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:44:09,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 511 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:09,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:09,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:44:09,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:10,772 INFO L130 PetriNetUnfolder]: 312/663 cut-off events. [2022-11-25 16:44:10,773 INFO L131 PetriNetUnfolder]: For 1611/1611 co-relation queries the response was YES. [2022-11-25 16:44:10,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2768 conditions, 663 events. 312/663 cut-off events. For 1611/1611 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3234 event pairs, 66 based on Foata normal form. 1/663 useless extension candidates. Maximal degree in co-relation 2745. Up to 385 conditions per place. [2022-11-25 16:44:10,781 INFO L137 encePairwiseOnDemand]: 376/391 looper letters, 96 selfloop transitions, 31 changer transitions 0/127 dead transitions. [2022-11-25 16:44:10,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 127 transitions, 1080 flow [2022-11-25 16:44:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:44:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 16:44:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2177 transitions. [2022-11-25 16:44:10,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3976982097186701 [2022-11-25 16:44:10,789 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2177 transitions. [2022-11-25 16:44:10,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2177 transitions. [2022-11-25 16:44:10,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:10,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2177 transitions. [2022-11-25 16:44:10,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 155.5) internal successors, (2177), 14 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:10,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 391.0) internal successors, (5865), 15 states have internal predecessors, (5865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:10,808 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 391.0) internal successors, (5865), 15 states have internal predecessors, (5865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:10,809 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 511 flow. Second operand 14 states and 2177 transitions. [2022-11-25 16:44:10,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 127 transitions, 1080 flow [2022-11-25 16:44:10,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 127 transitions, 1059 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-25 16:44:10,819 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 665 flow [2022-11-25 16:44:10,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=665, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2022-11-25 16:44:10,820 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2022-11-25 16:44:10,820 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 665 flow [2022-11-25 16:44:10,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:10,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:10,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:10,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:44:10,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:44:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1780819064, now seen corresponding path program 6 times [2022-11-25 16:44:10,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:10,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726902323] [2022-11-25 16:44:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:10,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:13,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:13,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726902323] [2022-11-25 16:44:13,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726902323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:13,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:13,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-25 16:44:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789114423] [2022-11-25 16:44:13,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:13,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 16:44:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:13,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 16:44:13,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:44:17,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 391 [2022-11-25 16:44:17,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 665 flow. Second operand has 17 states, 17 states have (on average 149.23529411764707) internal successors, (2537), 17 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:17,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:17,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 391 [2022-11-25 16:44:17,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:19,707 INFO L130 PetriNetUnfolder]: 316/681 cut-off events. [2022-11-25 16:44:19,707 INFO L131 PetriNetUnfolder]: For 1843/1843 co-relation queries the response was YES. [2022-11-25 16:44:19,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 681 events. 316/681 cut-off events. For 1843/1843 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3379 event pairs, 66 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 2934. Up to 433 conditions per place. [2022-11-25 16:44:19,718 INFO L137 encePairwiseOnDemand]: 375/391 looper letters, 102 selfloop transitions, 35 changer transitions 0/137 dead transitions. [2022-11-25 16:44:19,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 137 transitions, 1279 flow [2022-11-25 16:44:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:44:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 16:44:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2167 transitions. [2022-11-25 16:44:19,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3958713920350749 [2022-11-25 16:44:19,726 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2167 transitions. [2022-11-25 16:44:19,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2167 transitions. [2022-11-25 16:44:19,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:19,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2167 transitions. [2022-11-25 16:44:19,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 154.78571428571428) internal successors, (2167), 14 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:19,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 391.0) internal successors, (5865), 15 states have internal predecessors, (5865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:19,755 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 391.0) internal successors, (5865), 15 states have internal predecessors, (5865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:19,755 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 665 flow. Second operand 14 states and 2167 transitions. [2022-11-25 16:44:19,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 137 transitions, 1279 flow [2022-11-25 16:44:19,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 137 transitions, 1233 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-25 16:44:19,776 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 835 flow [2022-11-25 16:44:19,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=835, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2022-11-25 16:44:19,779 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 61 predicate places. [2022-11-25 16:44:19,779 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 835 flow [2022-11-25 16:44:19,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 149.23529411764707) internal successors, (2537), 17 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:19,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:19,781 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:19,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 16:44:19,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:44:19,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1868743737, now seen corresponding path program 1 times [2022-11-25 16:44:19,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:19,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099950198] [2022-11-25 16:44:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:19,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:20,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:20,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099950198] [2022-11-25 16:44:20,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099950198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:20,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:20,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 16:44:20,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928705109] [2022-11-25 16:44:20,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:20,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:44:20,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:20,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:44:20,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:44:21,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 391 [2022-11-25 16:44:21,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 835 flow. Second operand has 8 states, 8 states have (on average 159.25) internal successors, (1274), 8 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:21,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:21,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 391 [2022-11-25 16:44:21,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:22,024 INFO L130 PetriNetUnfolder]: 278/729 cut-off events. [2022-11-25 16:44:22,024 INFO L131 PetriNetUnfolder]: For 2527/2547 co-relation queries the response was YES. [2022-11-25 16:44:22,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3285 conditions, 729 events. 278/729 cut-off events. For 2527/2547 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4656 event pairs, 43 based on Foata normal form. 9/731 useless extension candidates. Maximal degree in co-relation 3251. Up to 245 conditions per place. [2022-11-25 16:44:22,034 INFO L137 encePairwiseOnDemand]: 382/391 looper letters, 81 selfloop transitions, 47 changer transitions 13/151 dead transitions. [2022-11-25 16:44:22,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 151 transitions, 1577 flow [2022-11-25 16:44:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:44:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:44:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1152 transitions. [2022-11-25 16:44:22,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42089879430032884 [2022-11-25 16:44:22,038 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1152 transitions. [2022-11-25 16:44:22,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1152 transitions. [2022-11-25 16:44:22,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:22,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1152 transitions. [2022-11-25 16:44:22,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.57142857142858) internal successors, (1152), 7 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:22,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:22,048 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:22,048 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 835 flow. Second operand 7 states and 1152 transitions. [2022-11-25 16:44:22,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 151 transitions, 1577 flow [2022-11-25 16:44:22,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 151 transitions, 1499 flow, removed 16 selfloop flow, removed 6 redundant places. [2022-11-25 16:44:22,063 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 962 flow [2022-11-25 16:44:22,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=962, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2022-11-25 16:44:22,064 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2022-11-25 16:44:22,065 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 962 flow [2022-11-25 16:44:22,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.25) internal successors, (1274), 8 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:22,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:22,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:22,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 16:44:22,067 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:44:22,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:22,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1487263976, now seen corresponding path program 7 times [2022-11-25 16:44:22,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:22,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128095865] [2022-11-25 16:44:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:22,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:24,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:24,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128095865] [2022-11-25 16:44:24,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128095865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:24,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:24,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:44:24,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939844620] [2022-11-25 16:44:24,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:24,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:44:24,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:44:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:44:27,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:44:27,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 962 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:27,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:27,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:44:27,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:28,820 INFO L130 PetriNetUnfolder]: 437/986 cut-off events. [2022-11-25 16:44:28,820 INFO L131 PetriNetUnfolder]: For 4011/4011 co-relation queries the response was YES. [2022-11-25 16:44:28,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4760 conditions, 986 events. 437/986 cut-off events. For 4011/4011 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5766 event pairs, 176 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 4725. Up to 800 conditions per place. [2022-11-25 16:44:28,834 INFO L137 encePairwiseOnDemand]: 377/391 looper letters, 127 selfloop transitions, 25 changer transitions 0/152 dead transitions. [2022-11-25 16:44:28,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 152 transitions, 1690 flow [2022-11-25 16:44:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:44:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:44:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1867 transitions. [2022-11-25 16:44:28,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39791133844842286 [2022-11-25 16:44:28,841 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1867 transitions. [2022-11-25 16:44:28,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1867 transitions. [2022-11-25 16:44:28,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:28,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1867 transitions. [2022-11-25 16:44:28,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 155.58333333333334) internal successors, (1867), 12 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:28,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:28,856 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:28,857 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 962 flow. Second operand 12 states and 1867 transitions. [2022-11-25 16:44:28,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 152 transitions, 1690 flow [2022-11-25 16:44:28,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 152 transitions, 1607 flow, removed 23 selfloop flow, removed 5 redundant places. [2022-11-25 16:44:28,876 INFO L231 Difference]: Finished difference. Result has 106 places, 114 transitions, 1149 flow [2022-11-25 16:44:28,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1149, PETRI_PLACES=106, PETRI_TRANSITIONS=114} [2022-11-25 16:44:28,879 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 70 predicate places. [2022-11-25 16:44:28,880 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 114 transitions, 1149 flow [2022-11-25 16:44:28,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:28,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:28,881 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:28,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:44:28,881 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:44:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash -636075568, now seen corresponding path program 8 times [2022-11-25 16:44:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:28,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632645673] [2022-11-25 16:44:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:28,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:29,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:29,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632645673] [2022-11-25 16:44:29,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632645673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:29,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:29,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:44:29,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424279170] [2022-11-25 16:44:29,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:29,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:44:29,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:29,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:44:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:44:29,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 391 [2022-11-25 16:44:29,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 114 transitions, 1149 flow. Second operand has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:29,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:29,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 391 [2022-11-25 16:44:29,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:29,828 INFO L130 PetriNetUnfolder]: 164/493 cut-off events. [2022-11-25 16:44:29,829 INFO L131 PetriNetUnfolder]: For 2559/2565 co-relation queries the response was YES. [2022-11-25 16:44:29,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 493 events. 164/493 cut-off events. For 2559/2565 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2877 event pairs, 95 based on Foata normal form. 7/490 useless extension candidates. Maximal degree in co-relation 2435. Up to 414 conditions per place. [2022-11-25 16:44:29,836 INFO L137 encePairwiseOnDemand]: 386/391 looper letters, 85 selfloop transitions, 10 changer transitions 0/107 dead transitions. [2022-11-25 16:44:29,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 1273 flow [2022-11-25 16:44:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:44:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:44:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 882 transitions. [2022-11-25 16:44:29,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.451150895140665 [2022-11-25 16:44:29,842 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 882 transitions. [2022-11-25 16:44:29,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 882 transitions. [2022-11-25 16:44:29,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:29,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 882 transitions. [2022-11-25 16:44:29,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:29,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 391.0) internal successors, (2346), 6 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:29,850 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 391.0) internal successors, (2346), 6 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:29,850 INFO L175 Difference]: Start difference. First operand has 106 places, 114 transitions, 1149 flow. Second operand 5 states and 882 transitions. [2022-11-25 16:44:29,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 107 transitions, 1273 flow [2022-11-25 16:44:29,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 1157 flow, removed 30 selfloop flow, removed 8 redundant places. [2022-11-25 16:44:29,867 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 972 flow [2022-11-25 16:44:29,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=972, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2022-11-25 16:44:29,868 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2022-11-25 16:44:29,869 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 972 flow [2022-11-25 16:44:29,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:29,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:29,870 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:29,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 16:44:29,870 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:44:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash -7361208, now seen corresponding path program 9 times [2022-11-25 16:44:29,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:29,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941657440] [2022-11-25 16:44:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:32,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:32,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941657440] [2022-11-25 16:44:32,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941657440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:32,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:32,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:44:32,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732991344] [2022-11-25 16:44:32,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:32,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:44:32,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:32,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:44:32,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:44:34,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:44:34,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 972 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:34,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:34,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:44:34,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:36,430 INFO L130 PetriNetUnfolder]: 233/631 cut-off events. [2022-11-25 16:44:36,431 INFO L131 PetriNetUnfolder]: For 2365/2365 co-relation queries the response was YES. [2022-11-25 16:44:36,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 631 events. 233/631 cut-off events. For 2365/2365 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3706 event pairs, 118 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 2854. Up to 528 conditions per place. [2022-11-25 16:44:36,441 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 120 selfloop transitions, 19 changer transitions 0/139 dead transitions. [2022-11-25 16:44:36,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 139 transitions, 1506 flow [2022-11-25 16:44:36,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:44:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:44:36,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1853 transitions. [2022-11-25 16:44:36,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39492753623188404 [2022-11-25 16:44:36,448 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1853 transitions. [2022-11-25 16:44:36,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1853 transitions. [2022-11-25 16:44:36,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:36,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1853 transitions. [2022-11-25 16:44:36,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.41666666666666) internal successors, (1853), 12 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:36,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:36,463 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:36,463 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 972 flow. Second operand 12 states and 1853 transitions. [2022-11-25 16:44:36,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 139 transitions, 1506 flow [2022-11-25 16:44:36,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 139 transitions, 1495 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 16:44:36,481 INFO L231 Difference]: Finished difference. Result has 117 places, 112 transitions, 1136 flow [2022-11-25 16:44:36,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1136, PETRI_PLACES=117, PETRI_TRANSITIONS=112} [2022-11-25 16:44:36,483 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2022-11-25 16:44:36,483 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 112 transitions, 1136 flow [2022-11-25 16:44:36,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:36,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:36,484 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:36,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 16:44:36,484 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:44:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash 48548696, now seen corresponding path program 10 times [2022-11-25 16:44:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:36,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473282857] [2022-11-25 16:44:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:36,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:38,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:38,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473282857] [2022-11-25 16:44:38,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473282857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:38,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:38,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:44:38,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430553744] [2022-11-25 16:44:38,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:38,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:44:38,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:38,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:44:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:44:41,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:44:41,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 1136 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:41,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:41,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:44:41,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:42,916 INFO L130 PetriNetUnfolder]: 251/685 cut-off events. [2022-11-25 16:44:42,916 INFO L131 PetriNetUnfolder]: For 3252/3252 co-relation queries the response was YES. [2022-11-25 16:44:42,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 685 events. 251/685 cut-off events. For 3252/3252 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4162 event pairs, 127 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 3273. Up to 582 conditions per place. [2022-11-25 16:44:42,926 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 126 selfloop transitions, 22 changer transitions 0/148 dead transitions. [2022-11-25 16:44:42,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 148 transitions, 1718 flow [2022-11-25 16:44:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:44:42,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:44:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1854 transitions. [2022-11-25 16:44:42,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39514066496163686 [2022-11-25 16:44:42,930 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1854 transitions. [2022-11-25 16:44:42,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1854 transitions. [2022-11-25 16:44:42,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:42,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1854 transitions. [2022-11-25 16:44:42,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.5) internal successors, (1854), 12 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:42,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:42,942 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:42,942 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 1136 flow. Second operand 12 states and 1854 transitions. [2022-11-25 16:44:42,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 148 transitions, 1718 flow [2022-11-25 16:44:42,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 148 transitions, 1649 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-11-25 16:44:42,966 INFO L231 Difference]: Finished difference. Result has 129 places, 122 transitions, 1278 flow [2022-11-25 16:44:42,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1278, PETRI_PLACES=129, PETRI_TRANSITIONS=122} [2022-11-25 16:44:42,968 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 93 predicate places. [2022-11-25 16:44:42,968 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 122 transitions, 1278 flow [2022-11-25 16:44:42,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:42,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:42,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:42,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 16:44:42,970 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:44:42,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:42,971 INFO L85 PathProgramCache]: Analyzing trace with hash 6165508, now seen corresponding path program 11 times [2022-11-25 16:44:42,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:42,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345534787] [2022-11-25 16:44:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:42,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:45,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:45,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345534787] [2022-11-25 16:44:45,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345534787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:45,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:45,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:44:45,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26714784] [2022-11-25 16:44:45,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:45,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:44:45,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:45,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:44:45,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:44:48,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:44:48,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 122 transitions, 1278 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:48,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:48,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:44:48,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:49,470 INFO L130 PetriNetUnfolder]: 261/721 cut-off events. [2022-11-25 16:44:49,470 INFO L131 PetriNetUnfolder]: For 3918/3918 co-relation queries the response was YES. [2022-11-25 16:44:49,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3551 conditions, 721 events. 261/721 cut-off events. For 3918/3918 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4508 event pairs, 138 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 3501. Up to 618 conditions per place. [2022-11-25 16:44:49,481 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 133 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2022-11-25 16:44:49,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 155 transitions, 1857 flow [2022-11-25 16:44:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:44:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:44:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1854 transitions. [2022-11-25 16:44:49,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39514066496163686 [2022-11-25 16:44:49,486 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1854 transitions. [2022-11-25 16:44:49,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1854 transitions. [2022-11-25 16:44:49,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:49,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1854 transitions. [2022-11-25 16:44:49,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.5) internal successors, (1854), 12 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:49,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:49,497 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:49,497 INFO L175 Difference]: Start difference. First operand has 129 places, 122 transitions, 1278 flow. Second operand 12 states and 1854 transitions. [2022-11-25 16:44:49,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 155 transitions, 1857 flow [2022-11-25 16:44:49,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 155 transitions, 1777 flow, removed 30 selfloop flow, removed 4 redundant places. [2022-11-25 16:44:49,525 INFO L231 Difference]: Finished difference. Result has 141 places, 129 transitions, 1384 flow [2022-11-25 16:44:49,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1384, PETRI_PLACES=141, PETRI_TRANSITIONS=129} [2022-11-25 16:44:49,526 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 105 predicate places. [2022-11-25 16:44:49,526 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 129 transitions, 1384 flow [2022-11-25 16:44:49,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:49,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:49,527 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:49,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 16:44:49,528 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:44:49,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash -540323902, now seen corresponding path program 12 times [2022-11-25 16:44:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:49,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884822080] [2022-11-25 16:44:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:49,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:51,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:51,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884822080] [2022-11-25 16:44:51,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884822080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:51,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:51,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:44:51,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345538055] [2022-11-25 16:44:51,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:51,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:44:51,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:51,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:44:51,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:44:54,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:44:54,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 129 transitions, 1384 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:54,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:54,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:44:54,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:56,066 INFO L130 PetriNetUnfolder]: 270/757 cut-off events. [2022-11-25 16:44:56,067 INFO L131 PetriNetUnfolder]: For 4193/4193 co-relation queries the response was YES. [2022-11-25 16:44:56,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 757 events. 270/757 cut-off events. For 4193/4193 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4875 event pairs, 120 based on Foata normal form. 3/759 useless extension candidates. Maximal degree in co-relation 3649. Up to 580 conditions per place. [2022-11-25 16:44:56,075 INFO L137 encePairwiseOnDemand]: 377/391 looper letters, 137 selfloop transitions, 38 changer transitions 2/177 dead transitions. [2022-11-25 16:44:56,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 177 transitions, 2153 flow [2022-11-25 16:44:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:44:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:44:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1862 transitions. [2022-11-25 16:44:56,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.396845694799659 [2022-11-25 16:44:56,079 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1862 transitions. [2022-11-25 16:44:56,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1862 transitions. [2022-11-25 16:44:56,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:56,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1862 transitions. [2022-11-25 16:44:56,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 155.16666666666666) internal successors, (1862), 12 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:56,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:56,091 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:56,091 INFO L175 Difference]: Start difference. First operand has 141 places, 129 transitions, 1384 flow. Second operand 12 states and 1862 transitions. [2022-11-25 16:44:56,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 177 transitions, 2153 flow [2022-11-25 16:44:56,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 177 transitions, 2046 flow, removed 38 selfloop flow, removed 6 redundant places. [2022-11-25 16:44:56,125 INFO L231 Difference]: Finished difference. Result has 150 places, 143 transitions, 1616 flow [2022-11-25 16:44:56,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1616, PETRI_PLACES=150, PETRI_TRANSITIONS=143} [2022-11-25 16:44:56,127 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 114 predicate places. [2022-11-25 16:44:56,127 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 143 transitions, 1616 flow [2022-11-25 16:44:56,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:56,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:56,128 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:44:56,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 16:44:56,128 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:44:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:56,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1968780243, now seen corresponding path program 2 times [2022-11-25 16:44:56,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:56,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166752613] [2022-11-25 16:44:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:56,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:44:57,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:57,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166752613] [2022-11-25 16:44:57,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166752613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:57,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:57,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 16:44:57,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471758579] [2022-11-25 16:44:57,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:57,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 16:44:57,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 16:44:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:44:59,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 391 [2022-11-25 16:44:59,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 143 transitions, 1616 flow. Second operand has 13 states, 13 states have (on average 155.46153846153845) internal successors, (2021), 13 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:59,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:59,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 391 [2022-11-25 16:44:59,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:00,720 INFO L130 PetriNetUnfolder]: 441/1339 cut-off events. [2022-11-25 16:45:00,721 INFO L131 PetriNetUnfolder]: For 9376/9418 co-relation queries the response was YES. [2022-11-25 16:45:00,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6962 conditions, 1339 events. 441/1339 cut-off events. For 9376/9418 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10717 event pairs, 149 based on Foata normal form. 48/1366 useless extension candidates. Maximal degree in co-relation 6903. Up to 626 conditions per place. [2022-11-25 16:45:00,741 INFO L137 encePairwiseOnDemand]: 379/391 looper letters, 167 selfloop transitions, 85 changer transitions 39/306 dead transitions. [2022-11-25 16:45:00,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 306 transitions, 4213 flow [2022-11-25 16:45:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 16:45:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 16:45:00,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1614 transitions. [2022-11-25 16:45:00,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41278772378516626 [2022-11-25 16:45:00,745 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1614 transitions. [2022-11-25 16:45:00,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1614 transitions. [2022-11-25 16:45:00,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:00,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1614 transitions. [2022-11-25 16:45:00,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.4) internal successors, (1614), 10 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:00,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 391.0) internal successors, (4301), 11 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:00,754 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 391.0) internal successors, (4301), 11 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:00,754 INFO L175 Difference]: Start difference. First operand has 150 places, 143 transitions, 1616 flow. Second operand 10 states and 1614 transitions. [2022-11-25 16:45:00,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 306 transitions, 4213 flow [2022-11-25 16:45:00,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 306 transitions, 4063 flow, removed 31 selfloop flow, removed 6 redundant places. [2022-11-25 16:45:00,820 INFO L231 Difference]: Finished difference. Result has 157 places, 197 transitions, 2608 flow [2022-11-25 16:45:00,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2608, PETRI_PLACES=157, PETRI_TRANSITIONS=197} [2022-11-25 16:45:00,821 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 121 predicate places. [2022-11-25 16:45:00,821 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 197 transitions, 2608 flow [2022-11-25 16:45:00,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.46153846153845) internal successors, (2021), 13 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:00,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:00,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:00,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 16:45:00,823 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:00,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:00,823 INFO L85 PathProgramCache]: Analyzing trace with hash -935910597, now seen corresponding path program 3 times [2022-11-25 16:45:00,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:00,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44397510] [2022-11-25 16:45:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:00,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:01,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:01,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44397510] [2022-11-25 16:45:01,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44397510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:01,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:01,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 16:45:01,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43831209] [2022-11-25 16:45:01,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:01,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:45:01,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:45:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:45:02,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 391 [2022-11-25 16:45:02,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 197 transitions, 2608 flow. Second operand has 8 states, 8 states have (on average 161.25) internal successors, (1290), 8 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:02,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:02,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 391 [2022-11-25 16:45:02,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:02,782 INFO L130 PetriNetUnfolder]: 386/1195 cut-off events. [2022-11-25 16:45:02,782 INFO L131 PetriNetUnfolder]: For 10911/10940 co-relation queries the response was YES. [2022-11-25 16:45:02,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 1195 events. 386/1195 cut-off events. For 10911/10940 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9415 event pairs, 111 based on Foata normal form. 35/1215 useless extension candidates. Maximal degree in co-relation 6679. Up to 456 conditions per place. [2022-11-25 16:45:02,794 INFO L137 encePairwiseOnDemand]: 383/391 looper letters, 112 selfloop transitions, 53 changer transitions 59/234 dead transitions. [2022-11-25 16:45:02,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 234 transitions, 3461 flow [2022-11-25 16:45:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:45:02,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:45:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1160 transitions. [2022-11-25 16:45:02,798 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4238217025940811 [2022-11-25 16:45:02,799 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1160 transitions. [2022-11-25 16:45:02,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1160 transitions. [2022-11-25 16:45:02,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:02,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1160 transitions. [2022-11-25 16:45:02,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.71428571428572) internal successors, (1160), 7 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:02,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:02,804 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:02,805 INFO L175 Difference]: Start difference. First operand has 157 places, 197 transitions, 2608 flow. Second operand 7 states and 1160 transitions. [2022-11-25 16:45:02,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 234 transitions, 3461 flow [2022-11-25 16:45:02,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 234 transitions, 3319 flow, removed 57 selfloop flow, removed 3 redundant places. [2022-11-25 16:45:02,880 INFO L231 Difference]: Finished difference. Result has 163 places, 138 transitions, 1907 flow [2022-11-25 16:45:02,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1907, PETRI_PLACES=163, PETRI_TRANSITIONS=138} [2022-11-25 16:45:02,881 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 127 predicate places. [2022-11-25 16:45:02,881 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 138 transitions, 1907 flow [2022-11-25 16:45:02,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 161.25) internal successors, (1290), 8 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:02,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:02,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 16:45:02,882 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:02,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1463628667, now seen corresponding path program 4 times [2022-11-25 16:45:02,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:02,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114053785] [2022-11-25 16:45:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:02,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:03,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:03,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114053785] [2022-11-25 16:45:03,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114053785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:03,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:03,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 16:45:03,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120877074] [2022-11-25 16:45:03,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:03,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:45:03,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:03,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:45:03,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:45:04,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 391 [2022-11-25 16:45:04,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 138 transitions, 1907 flow. Second operand has 8 states, 8 states have (on average 161.25) internal successors, (1290), 8 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:04,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:04,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 391 [2022-11-25 16:45:04,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:04,840 INFO L130 PetriNetUnfolder]: 267/840 cut-off events. [2022-11-25 16:45:04,840 INFO L131 PetriNetUnfolder]: For 9218/9235 co-relation queries the response was YES. [2022-11-25 16:45:04,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5040 conditions, 840 events. 267/840 cut-off events. For 9218/9235 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5996 event pairs, 44 based on Foata normal form. 19/851 useless extension candidates. Maximal degree in co-relation 4974. Up to 246 conditions per place. [2022-11-25 16:45:04,848 INFO L137 encePairwiseOnDemand]: 383/391 looper letters, 102 selfloop transitions, 41 changer transitions 34/184 dead transitions. [2022-11-25 16:45:04,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 184 transitions, 2735 flow [2022-11-25 16:45:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:45:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:45:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1165 transitions. [2022-11-25 16:45:04,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4256485202776763 [2022-11-25 16:45:04,851 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1165 transitions. [2022-11-25 16:45:04,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1165 transitions. [2022-11-25 16:45:04,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:04,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1165 transitions. [2022-11-25 16:45:04,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.42857142857142) internal successors, (1165), 7 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:04,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:04,856 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:04,857 INFO L175 Difference]: Start difference. First operand has 163 places, 138 transitions, 1907 flow. Second operand 7 states and 1165 transitions. [2022-11-25 16:45:04,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 184 transitions, 2735 flow [2022-11-25 16:45:04,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 184 transitions, 2339 flow, removed 118 selfloop flow, removed 31 redundant places. [2022-11-25 16:45:04,908 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 1349 flow [2022-11-25 16:45:04,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1349, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2022-11-25 16:45:04,909 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 83 predicate places. [2022-11-25 16:45:04,909 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 1349 flow [2022-11-25 16:45:04,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 161.25) internal successors, (1290), 8 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:04,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:04,910 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:04,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 16:45:04,910 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash 262176338, now seen corresponding path program 13 times [2022-11-25 16:45:04,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:04,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598275427] [2022-11-25 16:45:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:06,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598275427] [2022-11-25 16:45:06,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598275427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:06,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:06,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:45:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550297763] [2022-11-25 16:45:06,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:06,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:45:06,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:06,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:45:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:45:09,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:45:09,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 1349 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:09,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:09,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:45:09,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:11,196 INFO L130 PetriNetUnfolder]: 276/791 cut-off events. [2022-11-25 16:45:11,197 INFO L131 PetriNetUnfolder]: For 5433/5433 co-relation queries the response was YES. [2022-11-25 16:45:11,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4265 conditions, 791 events. 276/791 cut-off events. For 5433/5433 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5107 event pairs, 96 based on Foata normal form. 3/794 useless extension candidates. Maximal degree in co-relation 4219. Up to 556 conditions per place. [2022-11-25 16:45:11,206 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 114 selfloop transitions, 29 changer transitions 19/162 dead transitions. [2022-11-25 16:45:11,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 162 transitions, 2223 flow [2022-11-25 16:45:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:45:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:45:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1859 transitions. [2022-11-25 16:45:11,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3962063086104007 [2022-11-25 16:45:11,211 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1859 transitions. [2022-11-25 16:45:11,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1859 transitions. [2022-11-25 16:45:11,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:11,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1859 transitions. [2022-11-25 16:45:11,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.91666666666666) internal successors, (1859), 12 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:11,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:11,221 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:11,221 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 1349 flow. Second operand 12 states and 1859 transitions. [2022-11-25 16:45:11,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 162 transitions, 2223 flow [2022-11-25 16:45:11,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 162 transitions, 2054 flow, removed 52 selfloop flow, removed 11 redundant places. [2022-11-25 16:45:11,249 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 1447 flow [2022-11-25 16:45:11,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1447, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2022-11-25 16:45:11,250 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 78 predicate places. [2022-11-25 16:45:11,250 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 1447 flow [2022-11-25 16:45:11,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:11,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:11,251 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:11,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 16:45:11,251 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash -600425200, now seen corresponding path program 14 times [2022-11-25 16:45:11,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:11,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838623773] [2022-11-25 16:45:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:11,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:13,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:13,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838623773] [2022-11-25 16:45:13,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838623773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:13,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:13,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:45:13,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343547011] [2022-11-25 16:45:13,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:13,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:45:13,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:45:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:45:16,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:45:16,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 118 transitions, 1447 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:16,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:16,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:45:16,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:17,444 INFO L130 PetriNetUnfolder]: 241/718 cut-off events. [2022-11-25 16:45:17,444 INFO L131 PetriNetUnfolder]: For 5059/5059 co-relation queries the response was YES. [2022-11-25 16:45:17,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3884 conditions, 718 events. 241/718 cut-off events. For 5059/5059 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4566 event pairs, 83 based on Foata normal form. 4/722 useless extension candidates. Maximal degree in co-relation 3841. Up to 508 conditions per place. [2022-11-25 16:45:17,449 INFO L137 encePairwiseOnDemand]: 379/391 looper letters, 106 selfloop transitions, 22 changer transitions 25/153 dead transitions. [2022-11-25 16:45:17,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 153 transitions, 2069 flow [2022-11-25 16:45:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:45:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:45:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1858 transitions. [2022-11-25 16:45:17,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3959931798806479 [2022-11-25 16:45:17,453 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1858 transitions. [2022-11-25 16:45:17,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1858 transitions. [2022-11-25 16:45:17,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:17,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1858 transitions. [2022-11-25 16:45:17,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.83333333333334) internal successors, (1858), 12 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:17,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:17,458 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:17,458 INFO L175 Difference]: Start difference. First operand has 114 places, 118 transitions, 1447 flow. Second operand 12 states and 1858 transitions. [2022-11-25 16:45:17,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 153 transitions, 2069 flow [2022-11-25 16:45:17,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 153 transitions, 1970 flow, removed 30 selfloop flow, removed 8 redundant places. [2022-11-25 16:45:17,480 INFO L231 Difference]: Finished difference. Result has 120 places, 108 transitions, 1283 flow [2022-11-25 16:45:17,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1283, PETRI_PLACES=120, PETRI_TRANSITIONS=108} [2022-11-25 16:45:17,481 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 84 predicate places. [2022-11-25 16:45:17,481 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 108 transitions, 1283 flow [2022-11-25 16:45:17,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:17,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:17,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:17,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 16:45:17,482 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:17,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:17,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1531003728, now seen corresponding path program 15 times [2022-11-25 16:45:17,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:17,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666295696] [2022-11-25 16:45:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:17,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:19,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:19,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666295696] [2022-11-25 16:45:19,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666295696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:19,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:19,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:45:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708704671] [2022-11-25 16:45:19,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:19,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:45:19,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:45:19,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:45:22,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:45:22,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 108 transitions, 1283 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:22,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:22,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:45:22,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:23,516 INFO L130 PetriNetUnfolder]: 221/666 cut-off events. [2022-11-25 16:45:23,516 INFO L131 PetriNetUnfolder]: For 4918/4918 co-relation queries the response was YES. [2022-11-25 16:45:23,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3661 conditions, 666 events. 221/666 cut-off events. For 4918/4918 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4154 event pairs, 107 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 3615. Up to 592 conditions per place. [2022-11-25 16:45:23,520 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 104 selfloop transitions, 12 changer transitions 25/141 dead transitions. [2022-11-25 16:45:23,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 141 transitions, 1900 flow [2022-11-25 16:45:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:45:23,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:45:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1847 transitions. [2022-11-25 16:45:23,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39364876385336744 [2022-11-25 16:45:23,524 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1847 transitions. [2022-11-25 16:45:23,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1847 transitions. [2022-11-25 16:45:23,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:23,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1847 transitions. [2022-11-25 16:45:23,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 153.91666666666666) internal successors, (1847), 12 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:23,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:23,533 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:23,533 INFO L175 Difference]: Start difference. First operand has 120 places, 108 transitions, 1283 flow. Second operand 12 states and 1847 transitions. [2022-11-25 16:45:23,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 141 transitions, 1900 flow [2022-11-25 16:45:23,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 141 transitions, 1808 flow, removed 18 selfloop flow, removed 12 redundant places. [2022-11-25 16:45:23,555 INFO L231 Difference]: Finished difference. Result has 124 places, 113 transitions, 1347 flow [2022-11-25 16:45:23,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1347, PETRI_PLACES=124, PETRI_TRANSITIONS=113} [2022-11-25 16:45:23,556 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 88 predicate places. [2022-11-25 16:45:23,556 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 113 transitions, 1347 flow [2022-11-25 16:45:23,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:23,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:23,557 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:23,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 16:45:23,557 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:23,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1265773572, now seen corresponding path program 16 times [2022-11-25 16:45:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:23,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577677895] [2022-11-25 16:45:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:25,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:25,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577677895] [2022-11-25 16:45:25,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577677895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:25,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:25,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:45:25,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090498672] [2022-11-25 16:45:25,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:25,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:45:25,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:45:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:45:28,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:45:28,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 113 transitions, 1347 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:28,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:28,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:45:28,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:29,761 INFO L130 PetriNetUnfolder]: 209/638 cut-off events. [2022-11-25 16:45:29,762 INFO L131 PetriNetUnfolder]: For 4289/4289 co-relation queries the response was YES. [2022-11-25 16:45:29,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3446 conditions, 638 events. 209/638 cut-off events. For 4289/4289 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3954 event pairs, 56 based on Foata normal form. 3/641 useless extension candidates. Maximal degree in co-relation 3395. Up to 310 conditions per place. [2022-11-25 16:45:29,766 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 103 selfloop transitions, 35 changer transitions 24/162 dead transitions. [2022-11-25 16:45:29,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 162 transitions, 2095 flow [2022-11-25 16:45:29,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:45:29,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:45:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1867 transitions. [2022-11-25 16:45:29,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39791133844842286 [2022-11-25 16:45:29,770 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1867 transitions. [2022-11-25 16:45:29,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1867 transitions. [2022-11-25 16:45:29,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:29,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1867 transitions. [2022-11-25 16:45:29,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 155.58333333333334) internal successors, (1867), 12 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:29,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:29,779 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:29,780 INFO L175 Difference]: Start difference. First operand has 124 places, 113 transitions, 1347 flow. Second operand 12 states and 1867 transitions. [2022-11-25 16:45:29,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 162 transitions, 2095 flow [2022-11-25 16:45:29,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 162 transitions, 1989 flow, removed 38 selfloop flow, removed 9 redundant places. [2022-11-25 16:45:29,810 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 1343 flow [2022-11-25 16:45:29,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1343, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2022-11-25 16:45:29,811 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 89 predicate places. [2022-11-25 16:45:29,811 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 1343 flow [2022-11-25 16:45:29,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:29,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:29,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:29,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 16:45:29,813 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:29,813 INFO L85 PathProgramCache]: Analyzing trace with hash 360286758, now seen corresponding path program 17 times [2022-11-25 16:45:29,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:29,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630649109] [2022-11-25 16:45:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:29,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:31,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:31,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630649109] [2022-11-25 16:45:31,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630649109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:31,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:31,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:45:31,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030370701] [2022-11-25 16:45:31,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:31,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:45:31,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:45:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:45:34,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:45:34,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 1343 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:34,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:34,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:45:34,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:35,960 INFO L130 PetriNetUnfolder]: 204/623 cut-off events. [2022-11-25 16:45:35,961 INFO L131 PetriNetUnfolder]: For 4583/4583 co-relation queries the response was YES. [2022-11-25 16:45:35,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3451 conditions, 623 events. 204/623 cut-off events. For 4583/4583 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3840 event pairs, 88 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 3402. Up to 505 conditions per place. [2022-11-25 16:45:35,968 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 104 selfloop transitions, 13 changer transitions 31/148 dead transitions. [2022-11-25 16:45:35,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 148 transitions, 1998 flow [2022-11-25 16:45:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:45:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:45:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1849 transitions. [2022-11-25 16:45:35,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.394075021312873 [2022-11-25 16:45:35,978 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1849 transitions. [2022-11-25 16:45:35,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1849 transitions. [2022-11-25 16:45:35,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:35,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1849 transitions. [2022-11-25 16:45:35,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.08333333333334) internal successors, (1849), 12 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:35,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:35,989 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:35,989 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 1343 flow. Second operand 12 states and 1849 transitions. [2022-11-25 16:45:35,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 148 transitions, 1998 flow [2022-11-25 16:45:36,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 148 transitions, 1830 flow, removed 34 selfloop flow, removed 11 redundant places. [2022-11-25 16:45:36,016 INFO L231 Difference]: Finished difference. Result has 129 places, 112 transitions, 1291 flow [2022-11-25 16:45:36,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1291, PETRI_PLACES=129, PETRI_TRANSITIONS=112} [2022-11-25 16:45:36,017 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 93 predicate places. [2022-11-25 16:45:36,017 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 112 transitions, 1291 flow [2022-11-25 16:45:36,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:36,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:36,018 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:36,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 16:45:36,019 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:36,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1563132788, now seen corresponding path program 18 times [2022-11-25 16:45:36,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:36,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051114921] [2022-11-25 16:45:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:36,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:37,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:37,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051114921] [2022-11-25 16:45:37,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051114921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:37,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:37,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:45:37,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791006231] [2022-11-25 16:45:37,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:37,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:45:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:45:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:45:40,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:45:40,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 112 transitions, 1291 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:40,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:40,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:45:40,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:41,945 INFO L130 PetriNetUnfolder]: 188/582 cut-off events. [2022-11-25 16:45:41,945 INFO L131 PetriNetUnfolder]: For 3562/3562 co-relation queries the response was YES. [2022-11-25 16:45:41,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 582 events. 188/582 cut-off events. For 3562/3562 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3509 event pairs, 89 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3022. Up to 504 conditions per place. [2022-11-25 16:45:41,949 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 104 selfloop transitions, 12 changer transitions 24/140 dead transitions. [2022-11-25 16:45:41,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 140 transitions, 1800 flow [2022-11-25 16:45:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:45:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:45:41,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1848 transitions. [2022-11-25 16:45:41,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3938618925831202 [2022-11-25 16:45:41,953 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1848 transitions. [2022-11-25 16:45:41,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1848 transitions. [2022-11-25 16:45:41,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:41,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1848 transitions. [2022-11-25 16:45:41,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.0) internal successors, (1848), 12 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:41,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:41,960 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:41,960 INFO L175 Difference]: Start difference. First operand has 129 places, 112 transitions, 1291 flow. Second operand 12 states and 1848 transitions. [2022-11-25 16:45:41,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 140 transitions, 1800 flow [2022-11-25 16:45:41,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 140 transitions, 1752 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-11-25 16:45:41,983 INFO L231 Difference]: Finished difference. Result has 134 places, 111 transitions, 1287 flow [2022-11-25 16:45:41,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1287, PETRI_PLACES=134, PETRI_TRANSITIONS=111} [2022-11-25 16:45:41,984 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 98 predicate places. [2022-11-25 16:45:41,985 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 111 transitions, 1287 flow [2022-11-25 16:45:41,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:41,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:41,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:41,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 16:45:41,986 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:41,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1355137098, now seen corresponding path program 19 times [2022-11-25 16:45:41,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:41,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905061264] [2022-11-25 16:45:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:41,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:43,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:43,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905061264] [2022-11-25 16:45:43,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905061264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:43,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:43,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:45:43,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160877329] [2022-11-25 16:45:43,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:43,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:45:43,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:43,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:45:43,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:45:47,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:45:47,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 111 transitions, 1287 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:47,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:47,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:45:47,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:48,404 INFO L130 PetriNetUnfolder]: 169/526 cut-off events. [2022-11-25 16:45:48,404 INFO L131 PetriNetUnfolder]: For 3193/3193 co-relation queries the response was YES. [2022-11-25 16:45:48,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 526 events. 169/526 cut-off events. For 3193/3193 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3043 event pairs, 63 based on Foata normal form. 2/528 useless extension candidates. Maximal degree in co-relation 2752. Up to 400 conditions per place. [2022-11-25 16:45:48,408 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 105 selfloop transitions, 17 changer transitions 19/141 dead transitions. [2022-11-25 16:45:48,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 141 transitions, 1804 flow [2022-11-25 16:45:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:45:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:45:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1855 transitions. [2022-11-25 16:45:48,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3953537936913896 [2022-11-25 16:45:48,414 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1855 transitions. [2022-11-25 16:45:48,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1855 transitions. [2022-11-25 16:45:48,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:48,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1855 transitions. [2022-11-25 16:45:48,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.58333333333334) internal successors, (1855), 12 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:48,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:48,424 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:48,425 INFO L175 Difference]: Start difference. First operand has 134 places, 111 transitions, 1287 flow. Second operand 12 states and 1855 transitions. [2022-11-25 16:45:48,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 141 transitions, 1804 flow [2022-11-25 16:45:48,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 141 transitions, 1763 flow, removed 13 selfloop flow, removed 8 redundant places. [2022-11-25 16:45:48,448 INFO L231 Difference]: Finished difference. Result has 134 places, 109 transitions, 1291 flow [2022-11-25 16:45:48,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1291, PETRI_PLACES=134, PETRI_TRANSITIONS=109} [2022-11-25 16:45:48,449 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 98 predicate places. [2022-11-25 16:45:48,449 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 109 transitions, 1291 flow [2022-11-25 16:45:48,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:48,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:48,450 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:48,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 16:45:48,451 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:48,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash 524972666, now seen corresponding path program 20 times [2022-11-25 16:45:48,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:48,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597098176] [2022-11-25 16:45:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:48,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:50,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:50,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597098176] [2022-11-25 16:45:50,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597098176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:50,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:50,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:45:50,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087485265] [2022-11-25 16:45:50,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:50,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:45:50,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:50,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:45:50,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:45:53,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:45:53,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 109 transitions, 1291 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:53,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:53,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:45:53,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:45:54,308 INFO L130 PetriNetUnfolder]: 156/501 cut-off events. [2022-11-25 16:45:54,308 INFO L131 PetriNetUnfolder]: For 3054/3054 co-relation queries the response was YES. [2022-11-25 16:45:54,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 501 events. 156/501 cut-off events. For 3054/3054 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2874 event pairs, 64 based on Foata normal form. 3/504 useless extension candidates. Maximal degree in co-relation 2612. Up to 388 conditions per place. [2022-11-25 16:45:54,311 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 101 selfloop transitions, 17 changer transitions 16/134 dead transitions. [2022-11-25 16:45:54,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 134 transitions, 1736 flow [2022-11-25 16:45:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:45:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:45:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1849 transitions. [2022-11-25 16:45:54,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.394075021312873 [2022-11-25 16:45:54,314 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1849 transitions. [2022-11-25 16:45:54,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1849 transitions. [2022-11-25 16:45:54,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:45:54,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1849 transitions. [2022-11-25 16:45:54,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.08333333333334) internal successors, (1849), 12 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:54,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:54,321 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:54,321 INFO L175 Difference]: Start difference. First operand has 134 places, 109 transitions, 1291 flow. Second operand 12 states and 1849 transitions. [2022-11-25 16:45:54,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 134 transitions, 1736 flow [2022-11-25 16:45:54,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 134 transitions, 1668 flow, removed 17 selfloop flow, removed 8 redundant places. [2022-11-25 16:45:54,337 INFO L231 Difference]: Finished difference. Result has 137 places, 107 transitions, 1275 flow [2022-11-25 16:45:54,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1275, PETRI_PLACES=137, PETRI_TRANSITIONS=107} [2022-11-25 16:45:54,337 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 101 predicate places. [2022-11-25 16:45:54,338 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 107 transitions, 1275 flow [2022-11-25 16:45:54,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:54,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:45:54,338 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:45:54,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-25 16:45:54,339 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:45:54,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:45:54,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2091369680, now seen corresponding path program 21 times [2022-11-25 16:45:54,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:45:54,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142513919] [2022-11-25 16:45:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:45:54,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:45:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:45:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:45:55,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:45:55,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142513919] [2022-11-25 16:45:55,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142513919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:45:55,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:45:55,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:45:55,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54388105] [2022-11-25 16:45:55,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:45:55,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:45:55,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:45:55,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:45:55,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:45:59,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:45:59,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 107 transitions, 1275 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:45:59,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:45:59,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:45:59,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:00,616 INFO L130 PetriNetUnfolder]: 135/455 cut-off events. [2022-11-25 16:46:00,616 INFO L131 PetriNetUnfolder]: For 2664/2664 co-relation queries the response was YES. [2022-11-25 16:46:00,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2386 conditions, 455 events. 135/455 cut-off events. For 2664/2664 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2556 event pairs, 19 based on Foata normal form. 5/460 useless extension candidates. Maximal degree in co-relation 2333. Up to 176 conditions per place. [2022-11-25 16:46:00,620 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 79 selfloop transitions, 33 changer transitions 19/131 dead transitions. [2022-11-25 16:46:00,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 131 transitions, 1625 flow [2022-11-25 16:46:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:46:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:46:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1856 transitions. [2022-11-25 16:46:00,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3955669224211424 [2022-11-25 16:46:00,623 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1856 transitions. [2022-11-25 16:46:00,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1856 transitions. [2022-11-25 16:46:00,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:00,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1856 transitions. [2022-11-25 16:46:00,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.66666666666666) internal successors, (1856), 12 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:00,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:00,632 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:00,632 INFO L175 Difference]: Start difference. First operand has 137 places, 107 transitions, 1275 flow. Second operand 12 states and 1856 transitions. [2022-11-25 16:46:00,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 131 transitions, 1625 flow [2022-11-25 16:46:00,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 131 transitions, 1577 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-11-25 16:46:00,650 INFO L231 Difference]: Finished difference. Result has 139 places, 97 transitions, 1199 flow [2022-11-25 16:46:00,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1199, PETRI_PLACES=139, PETRI_TRANSITIONS=97} [2022-11-25 16:46:00,651 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 103 predicate places. [2022-11-25 16:46:00,651 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 97 transitions, 1199 flow [2022-11-25 16:46:00,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:00,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:00,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:00,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-25 16:46:00,653 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:46:00,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:00,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1437224520, now seen corresponding path program 22 times [2022-11-25 16:46:00,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:00,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481684294] [2022-11-25 16:46:00,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:00,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:02,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:02,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481684294] [2022-11-25 16:46:02,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481684294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:02,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:02,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:46:02,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145354427] [2022-11-25 16:46:02,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:02,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:46:02,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:46:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:46:05,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:46:05,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 97 transitions, 1199 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:05,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:05,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:46:05,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:06,623 INFO L130 PetriNetUnfolder]: 109/375 cut-off events. [2022-11-25 16:46:06,623 INFO L131 PetriNetUnfolder]: For 2630/2630 co-relation queries the response was YES. [2022-11-25 16:46:06,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2159 conditions, 375 events. 109/375 cut-off events. For 2630/2630 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1990 event pairs, 15 based on Foata normal form. 2/377 useless extension candidates. Maximal degree in co-relation 2105. Up to 160 conditions per place. [2022-11-25 16:46:06,628 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 67 selfloop transitions, 26 changer transitions 25/118 dead transitions. [2022-11-25 16:46:06,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 118 transitions, 1527 flow [2022-11-25 16:46:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:46:06,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:46:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1853 transitions. [2022-11-25 16:46:06,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39492753623188404 [2022-11-25 16:46:06,633 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1853 transitions. [2022-11-25 16:46:06,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1853 transitions. [2022-11-25 16:46:06,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:06,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1853 transitions. [2022-11-25 16:46:06,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.41666666666666) internal successors, (1853), 12 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:06,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:06,650 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:06,650 INFO L175 Difference]: Start difference. First operand has 139 places, 97 transitions, 1199 flow. Second operand 12 states and 1853 transitions. [2022-11-25 16:46:06,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 118 transitions, 1527 flow [2022-11-25 16:46:06,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 118 transitions, 1438 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-25 16:46:06,677 INFO L231 Difference]: Finished difference. Result has 138 places, 84 transitions, 1040 flow [2022-11-25 16:46:06,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1040, PETRI_PLACES=138, PETRI_TRANSITIONS=84} [2022-11-25 16:46:06,678 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 102 predicate places. [2022-11-25 16:46:06,678 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 84 transitions, 1040 flow [2022-11-25 16:46:06,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:06,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:06,679 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:06,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-25 16:46:06,680 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:46:06,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:06,680 INFO L85 PathProgramCache]: Analyzing trace with hash 658979052, now seen corresponding path program 23 times [2022-11-25 16:46:06,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:06,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666197070] [2022-11-25 16:46:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:06,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:08,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:08,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666197070] [2022-11-25 16:46:08,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666197070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:08,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:08,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:46:08,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148164286] [2022-11-25 16:46:08,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:08,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:46:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:46:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:46:11,016 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:46:11,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 84 transitions, 1040 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:11,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:11,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:46:11,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:12,196 INFO L130 PetriNetUnfolder]: 104/354 cut-off events. [2022-11-25 16:46:12,196 INFO L131 PetriNetUnfolder]: For 2436/2436 co-relation queries the response was YES. [2022-11-25 16:46:12,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2013 conditions, 354 events. 104/354 cut-off events. For 2436/2436 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1828 event pairs, 10 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 1960. Up to 223 conditions per place. [2022-11-25 16:46:12,198 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 79 selfloop transitions, 24 changer transitions 13/116 dead transitions. [2022-11-25 16:46:12,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 116 transitions, 1471 flow [2022-11-25 16:46:12,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 16:46:12,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 16:46:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2005 transitions. [2022-11-25 16:46:12,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39445209521935864 [2022-11-25 16:46:12,203 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2005 transitions. [2022-11-25 16:46:12,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2005 transitions. [2022-11-25 16:46:12,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:12,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2005 transitions. [2022-11-25 16:46:12,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 154.23076923076923) internal successors, (2005), 13 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:12,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 391.0) internal successors, (5474), 14 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:12,213 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 391.0) internal successors, (5474), 14 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:12,213 INFO L175 Difference]: Start difference. First operand has 138 places, 84 transitions, 1040 flow. Second operand 13 states and 2005 transitions. [2022-11-25 16:46:12,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 116 transitions, 1471 flow [2022-11-25 16:46:12,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 116 transitions, 1329 flow, removed 17 selfloop flow, removed 16 redundant places. [2022-11-25 16:46:12,231 INFO L231 Difference]: Finished difference. Result has 126 places, 86 transitions, 1009 flow [2022-11-25 16:46:12,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1009, PETRI_PLACES=126, PETRI_TRANSITIONS=86} [2022-11-25 16:46:12,232 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 90 predicate places. [2022-11-25 16:46:12,233 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 86 transitions, 1009 flow [2022-11-25 16:46:12,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:12,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:12,233 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:12,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-25 16:46:12,234 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:46:12,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:12,234 INFO L85 PathProgramCache]: Analyzing trace with hash -465704926, now seen corresponding path program 24 times [2022-11-25 16:46:12,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:12,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077003374] [2022-11-25 16:46:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:12,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:13,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077003374] [2022-11-25 16:46:13,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077003374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:13,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:13,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:46:13,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746065461] [2022-11-25 16:46:13,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:13,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:46:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:46:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:46:16,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:46:16,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 86 transitions, 1009 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:16,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:16,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:46:16,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:17,783 INFO L130 PetriNetUnfolder]: 95/333 cut-off events. [2022-11-25 16:46:17,783 INFO L131 PetriNetUnfolder]: For 2080/2080 co-relation queries the response was YES. [2022-11-25 16:46:17,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1834 conditions, 333 events. 95/333 cut-off events. For 2080/2080 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1688 event pairs, 13 based on Foata normal form. 2/333 useless extension candidates. Maximal degree in co-relation 1785. Up to 216 conditions per place. [2022-11-25 16:46:17,785 INFO L137 encePairwiseOnDemand]: 379/391 looper letters, 64 selfloop transitions, 11 changer transitions 30/105 dead transitions. [2022-11-25 16:46:17,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 105 transitions, 1304 flow [2022-11-25 16:46:17,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:46:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:46:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1846 transitions. [2022-11-25 16:46:17,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3934356351236147 [2022-11-25 16:46:17,789 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1846 transitions. [2022-11-25 16:46:17,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1846 transitions. [2022-11-25 16:46:17,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:17,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1846 transitions. [2022-11-25 16:46:17,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 153.83333333333334) internal successors, (1846), 12 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:17,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:17,795 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:17,795 INFO L175 Difference]: Start difference. First operand has 126 places, 86 transitions, 1009 flow. Second operand 12 states and 1846 transitions. [2022-11-25 16:46:17,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 105 transitions, 1304 flow [2022-11-25 16:46:17,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 105 transitions, 1254 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-25 16:46:17,806 INFO L231 Difference]: Finished difference. Result has 129 places, 71 transitions, 799 flow [2022-11-25 16:46:17,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=799, PETRI_PLACES=129, PETRI_TRANSITIONS=71} [2022-11-25 16:46:17,806 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 93 predicate places. [2022-11-25 16:46:17,806 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 71 transitions, 799 flow [2022-11-25 16:46:17,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:17,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:17,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:17,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-25 16:46:17,808 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:46:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1869241324, now seen corresponding path program 25 times [2022-11-25 16:46:17,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:17,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739372604] [2022-11-25 16:46:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:17,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:19,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739372604] [2022-11-25 16:46:19,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739372604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:19,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:19,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:46:19,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639536081] [2022-11-25 16:46:19,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:19,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:46:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:19,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:46:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:46:22,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:46:22,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 71 transitions, 799 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:22,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:22,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:46:22,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:23,447 INFO L130 PetriNetUnfolder]: 81/288 cut-off events. [2022-11-25 16:46:23,447 INFO L131 PetriNetUnfolder]: For 1686/1686 co-relation queries the response was YES. [2022-11-25 16:46:23,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 288 events. 81/288 cut-off events. For 1686/1686 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1383 event pairs, 10 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 1504. Up to 138 conditions per place. [2022-11-25 16:46:23,449 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 63 selfloop transitions, 24 changer transitions 15/102 dead transitions. [2022-11-25 16:46:23,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 102 transitions, 1208 flow [2022-11-25 16:46:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 16:46:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 16:46:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2005 transitions. [2022-11-25 16:46:23,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39445209521935864 [2022-11-25 16:46:23,453 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2005 transitions. [2022-11-25 16:46:23,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2005 transitions. [2022-11-25 16:46:23,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:23,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2005 transitions. [2022-11-25 16:46:23,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 154.23076923076923) internal successors, (2005), 13 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:23,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 391.0) internal successors, (5474), 14 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:23,458 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 391.0) internal successors, (5474), 14 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:23,458 INFO L175 Difference]: Start difference. First operand has 129 places, 71 transitions, 799 flow. Second operand 13 states and 2005 transitions. [2022-11-25 16:46:23,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 102 transitions, 1208 flow [2022-11-25 16:46:23,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 102 transitions, 1124 flow, removed 22 selfloop flow, removed 16 redundant places. [2022-11-25 16:46:23,465 INFO L231 Difference]: Finished difference. Result has 115 places, 72 transitions, 816 flow [2022-11-25 16:46:23,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=816, PETRI_PLACES=115, PETRI_TRANSITIONS=72} [2022-11-25 16:46:23,466 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 79 predicate places. [2022-11-25 16:46:23,466 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 72 transitions, 816 flow [2022-11-25 16:46:23,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:23,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:23,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:23,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-25 16:46:23,467 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:46:23,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2077468346, now seen corresponding path program 26 times [2022-11-25 16:46:23,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:23,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925998866] [2022-11-25 16:46:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:23,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:25,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:25,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925998866] [2022-11-25 16:46:25,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925998866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:25,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:25,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:46:25,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882414230] [2022-11-25 16:46:25,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:25,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:46:25,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:25,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:46:25,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:46:28,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:46:28,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 72 transitions, 816 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:28,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:28,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:46:28,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:29,522 INFO L130 PetriNetUnfolder]: 70/263 cut-off events. [2022-11-25 16:46:29,522 INFO L131 PetriNetUnfolder]: For 1617/1617 co-relation queries the response was YES. [2022-11-25 16:46:29,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 263 events. 70/263 cut-off events. For 1617/1617 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1228 event pairs, 13 based on Foata normal form. 2/263 useless extension candidates. Maximal degree in co-relation 1369. Up to 129 conditions per place. [2022-11-25 16:46:29,525 INFO L137 encePairwiseOnDemand]: 379/391 looper letters, 43 selfloop transitions, 7 changer transitions 40/90 dead transitions. [2022-11-25 16:46:29,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 90 transitions, 1090 flow [2022-11-25 16:46:29,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:46:29,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:46:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1846 transitions. [2022-11-25 16:46:29,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3934356351236147 [2022-11-25 16:46:29,527 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1846 transitions. [2022-11-25 16:46:29,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1846 transitions. [2022-11-25 16:46:29,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:29,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1846 transitions. [2022-11-25 16:46:29,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 153.83333333333334) internal successors, (1846), 12 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:29,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:29,536 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:29,537 INFO L175 Difference]: Start difference. First operand has 115 places, 72 transitions, 816 flow. Second operand 12 states and 1846 transitions. [2022-11-25 16:46:29,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 90 transitions, 1090 flow [2022-11-25 16:46:29,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 90 transitions, 1042 flow, removed 10 selfloop flow, removed 9 redundant places. [2022-11-25 16:46:29,549 INFO L231 Difference]: Finished difference. Result has 117 places, 48 transitions, 504 flow [2022-11-25 16:46:29,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=504, PETRI_PLACES=117, PETRI_TRANSITIONS=48} [2022-11-25 16:46:29,550 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2022-11-25 16:46:29,550 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 48 transitions, 504 flow [2022-11-25 16:46:29,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:29,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:29,551 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:29,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-25 16:46:29,551 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:46:29,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1583103660, now seen corresponding path program 27 times [2022-11-25 16:46:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:29,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472172751] [2022-11-25 16:46:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:31,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:31,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472172751] [2022-11-25 16:46:31,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472172751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:31,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:31,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:46:31,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804423954] [2022-11-25 16:46:31,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:31,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:46:31,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:31,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:46:31,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:46:34,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:46:34,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 48 transitions, 504 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:34,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:34,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:46:34,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:35,313 INFO L130 PetriNetUnfolder]: 39/165 cut-off events. [2022-11-25 16:46:35,313 INFO L131 PetriNetUnfolder]: For 975/975 co-relation queries the response was YES. [2022-11-25 16:46:35,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 165 events. 39/165 cut-off events. For 975/975 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 639 event pairs, 7 based on Foata normal form. 1/164 useless extension candidates. Maximal degree in co-relation 811. Up to 93 conditions per place. [2022-11-25 16:46:35,314 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 47 selfloop transitions, 16 changer transitions 11/74 dead transitions. [2022-11-25 16:46:35,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 74 transitions, 796 flow [2022-11-25 16:46:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 16:46:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 16:46:35,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1997 transitions. [2022-11-25 16:46:35,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3928782215227228 [2022-11-25 16:46:35,317 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1997 transitions. [2022-11-25 16:46:35,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1997 transitions. [2022-11-25 16:46:35,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:35,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1997 transitions. [2022-11-25 16:46:35,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 153.6153846153846) internal successors, (1997), 13 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:35,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 391.0) internal successors, (5474), 14 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:35,326 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 391.0) internal successors, (5474), 14 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:35,326 INFO L175 Difference]: Start difference. First operand has 117 places, 48 transitions, 504 flow. Second operand 13 states and 1997 transitions. [2022-11-25 16:46:35,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 74 transitions, 796 flow [2022-11-25 16:46:35,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 74 transitions, 690 flow, removed 28 selfloop flow, removed 24 redundant places. [2022-11-25 16:46:35,331 INFO L231 Difference]: Finished difference. Result has 89 places, 50 transitions, 482 flow [2022-11-25 16:46:35,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=482, PETRI_PLACES=89, PETRI_TRANSITIONS=50} [2022-11-25 16:46:35,331 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 53 predicate places. [2022-11-25 16:46:35,332 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 50 transitions, 482 flow [2022-11-25 16:46:35,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:35,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:35,332 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:35,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-25 16:46:35,333 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:46:35,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:35,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1931361286, now seen corresponding path program 28 times [2022-11-25 16:46:35,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:35,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455668902] [2022-11-25 16:46:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:35,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:37,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:37,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455668902] [2022-11-25 16:46:37,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455668902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:37,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:37,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-25 16:46:37,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694340966] [2022-11-25 16:46:37,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:37,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 16:46:37,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:37,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 16:46:37,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:46:40,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 391 [2022-11-25 16:46:40,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 50 transitions, 482 flow. Second operand has 17 states, 17 states have (on average 149.23529411764707) internal successors, (2537), 17 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:40,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:40,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 391 [2022-11-25 16:46:40,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:42,002 INFO L130 PetriNetUnfolder]: 32/142 cut-off events. [2022-11-25 16:46:42,002 INFO L131 PetriNetUnfolder]: For 703/703 co-relation queries the response was YES. [2022-11-25 16:46:42,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 142 events. 32/142 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 495 event pairs, 8 based on Foata normal form. 2/142 useless extension candidates. Maximal degree in co-relation 653. Up to 82 conditions per place. [2022-11-25 16:46:42,003 INFO L137 encePairwiseOnDemand]: 378/391 looper letters, 31 selfloop transitions, 6 changer transitions 27/64 dead transitions. [2022-11-25 16:46:42,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 64 transitions, 642 flow [2022-11-25 16:46:42,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 16:46:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 16:46:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1975 transitions. [2022-11-25 16:46:42,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38855006885697424 [2022-11-25 16:46:42,008 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1975 transitions. [2022-11-25 16:46:42,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1975 transitions. [2022-11-25 16:46:42,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:42,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1975 transitions. [2022-11-25 16:46:42,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 151.92307692307693) internal successors, (1975), 13 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:42,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 391.0) internal successors, (5474), 14 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:42,018 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 391.0) internal successors, (5474), 14 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:42,018 INFO L175 Difference]: Start difference. First operand has 89 places, 50 transitions, 482 flow. Second operand 13 states and 1975 transitions. [2022-11-25 16:46:42,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 64 transitions, 642 flow [2022-11-25 16:46:42,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 64 transitions, 606 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-11-25 16:46:42,024 INFO L231 Difference]: Finished difference. Result has 91 places, 36 transitions, 309 flow [2022-11-25 16:46:42,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=309, PETRI_PLACES=91, PETRI_TRANSITIONS=36} [2022-11-25 16:46:42,024 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2022-11-25 16:46:42,025 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 36 transitions, 309 flow [2022-11-25 16:46:42,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 149.23529411764707) internal successors, (2537), 17 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:42,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:42,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:42,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-25 16:46:42,026 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:46:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash 162262069, now seen corresponding path program 5 times [2022-11-25 16:46:42,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:42,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781041725] [2022-11-25 16:46:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:42,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:42,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:42,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781041725] [2022-11-25 16:46:42,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781041725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:42,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:42,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 16:46:42,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664596886] [2022-11-25 16:46:42,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:42,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:46:42,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:42,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:46:42,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:46:43,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 391 [2022-11-25 16:46:43,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 36 transitions, 309 flow. Second operand has 8 states, 8 states have (on average 161.375) internal successors, (1291), 8 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:43,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:43,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 391 [2022-11-25 16:46:43,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:43,662 INFO L130 PetriNetUnfolder]: 14/94 cut-off events. [2022-11-25 16:46:43,662 INFO L131 PetriNetUnfolder]: For 377/377 co-relation queries the response was YES. [2022-11-25 16:46:43,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 94 events. 14/94 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 284 event pairs, 8 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 408. Up to 33 conditions per place. [2022-11-25 16:46:43,663 INFO L137 encePairwiseOnDemand]: 384/391 looper letters, 32 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2022-11-25 16:46:43,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 48 transitions, 464 flow [2022-11-25 16:46:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:46:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:46:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1150 transitions. [2022-11-25 16:46:43,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42016806722689076 [2022-11-25 16:46:43,665 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1150 transitions. [2022-11-25 16:46:43,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1150 transitions. [2022-11-25 16:46:43,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:43,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1150 transitions. [2022-11-25 16:46:43,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.28571428571428) internal successors, (1150), 7 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:43,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:43,668 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:43,669 INFO L175 Difference]: Start difference. First operand has 91 places, 36 transitions, 309 flow. Second operand 7 states and 1150 transitions. [2022-11-25 16:46:43,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 48 transitions, 464 flow [2022-11-25 16:46:43,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 354 flow, removed 25 selfloop flow, removed 20 redundant places. [2022-11-25 16:46:43,671 INFO L231 Difference]: Finished difference. Result has 61 places, 38 transitions, 273 flow [2022-11-25 16:46:43,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=61, PETRI_TRANSITIONS=38} [2022-11-25 16:46:43,672 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2022-11-25 16:46:43,672 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 38 transitions, 273 flow [2022-11-25 16:46:43,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 161.375) internal successors, (1291), 8 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:43,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:43,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:43,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-25 16:46:43,673 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:46:43,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:43,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2091947186, now seen corresponding path program 29 times [2022-11-25 16:46:43,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:43,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854302410] [2022-11-25 16:46:43,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:43,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:45,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:45,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854302410] [2022-11-25 16:46:45,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854302410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:45,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:45,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 16:46:45,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775378062] [2022-11-25 16:46:45,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:45,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:46:45,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:45,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:46:45,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:46:48,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 391 [2022-11-25 16:46:48,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 38 transitions, 273 flow. Second operand has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:48,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:48,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 391 [2022-11-25 16:46:48,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:49,249 INFO L130 PetriNetUnfolder]: 17/110 cut-off events. [2022-11-25 16:46:49,249 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-11-25 16:46:49,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 110 events. 17/110 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 373 event pairs, 0 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 427. Up to 39 conditions per place. [2022-11-25 16:46:49,250 INFO L137 encePairwiseOnDemand]: 380/391 looper letters, 33 selfloop transitions, 14 changer transitions 10/57 dead transitions. [2022-11-25 16:46:49,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 57 transitions, 485 flow [2022-11-25 16:46:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:46:49,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:46:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1832 transitions. [2022-11-25 16:46:49,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39045183290707586 [2022-11-25 16:46:49,258 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1832 transitions. [2022-11-25 16:46:49,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1832 transitions. [2022-11-25 16:46:49,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:49,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1832 transitions. [2022-11-25 16:46:49,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 152.66666666666666) internal successors, (1832), 12 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:49,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:49,266 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 391.0) internal successors, (5083), 13 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:49,266 INFO L175 Difference]: Start difference. First operand has 61 places, 38 transitions, 273 flow. Second operand 12 states and 1832 transitions. [2022-11-25 16:46:49,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 57 transitions, 485 flow [2022-11-25 16:46:49,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 57 transitions, 464 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 16:46:49,269 INFO L231 Difference]: Finished difference. Result has 72 places, 40 transitions, 319 flow [2022-11-25 16:46:49,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=319, PETRI_PLACES=72, PETRI_TRANSITIONS=40} [2022-11-25 16:46:49,270 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2022-11-25 16:46:49,270 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 40 transitions, 319 flow [2022-11-25 16:46:49,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:49,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:49,271 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:49,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-25 16:46:49,271 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:46:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1312387786, now seen corresponding path program 30 times [2022-11-25 16:46:49,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:49,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813584867] [2022-11-25 16:46:49,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:49,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:49,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-25 16:46:49,980 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 16:46:49,990 INFO L158 Benchmark]: Toolchain (without parser) took 241920.69ms. Allocated memory was 222.3MB in the beginning and 564.1MB in the end (delta: 341.8MB). Free memory was 183.8MB in the beginning and 210.6MB in the end (delta: -26.8MB). Peak memory consumption was 345.4MB. Max. memory is 16.1GB. [2022-11-25 16:46:49,991 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 146.8MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:46:49,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1336.67ms. Allocated memory is still 222.3MB. Free memory was 183.8MB in the beginning and 127.8MB in the end (delta: 56.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-25 16:46:49,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.63ms. Allocated memory is still 222.3MB. Free memory was 127.8MB in the beginning and 124.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 16:46:49,992 INFO L158 Benchmark]: Boogie Preprocessor took 49.09ms. Allocated memory is still 222.3MB. Free memory was 124.3MB in the beginning and 121.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:46:49,992 INFO L158 Benchmark]: RCFGBuilder took 827.00ms. Allocated memory is still 222.3MB. Free memory was 121.5MB in the beginning and 184.8MB in the end (delta: -63.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-25 16:46:49,993 INFO L158 Benchmark]: TraceAbstraction took 239635.22ms. Allocated memory was 222.3MB in the beginning and 564.1MB in the end (delta: 341.8MB). Free memory was 184.8MB in the beginning and 210.6MB in the end (delta: -25.7MB). Peak memory consumption was 345.5MB. Max. memory is 16.1GB. [2022-11-25 16:46:49,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 146.8MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1336.67ms. Allocated memory is still 222.3MB. Free memory was 183.8MB in the beginning and 127.8MB in the end (delta: 56.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.63ms. Allocated memory is still 222.3MB. Free memory was 127.8MB in the beginning and 124.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.09ms. Allocated memory is still 222.3MB. Free memory was 124.3MB in the beginning and 121.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 827.00ms. Allocated memory is still 222.3MB. Free memory was 121.5MB in the beginning and 184.8MB in the end (delta: -63.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 239635.22ms. Allocated memory was 222.3MB in the beginning and 564.1MB in the end (delta: 341.8MB). Free memory was 184.8MB in the beginning and 210.6MB in the end (delta: -25.7MB). Peak memory consumption was 345.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 52.1s, 181 PlacesBefore, 36 PlacesAfterwards, 181 TransitionsBefore, 32 TransitionsAfterwards, 2884 CoEnabledTransitionPairs, 8 FixpointIterations, 111 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 196 TotalNumberOfCompositions, 6041 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3059, independent: 2836, independent conditional: 0, independent unconditional: 2836, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 58, unknown conditional: 0, unknown unconditional: 58] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1983, independent: 1917, independent conditional: 0, independent unconditional: 1917, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1983, independent: 1913, independent conditional: 0, independent unconditional: 1913, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 70, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , SemanticIndependenceRelation.Query Time [ms]: [ total: 32024, independent: 73, independent conditional: 0, independent unconditional: 73, dependent: 2378, dependent conditional: 0, dependent unconditional: 2378, unknown: 29574, unknown conditional: 0, unknown unconditional: 29574] ], Cache Queries: [ total: 3059, independent: 919, independent conditional: 0, independent unconditional: 919, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 2027, unknown conditional: 0, unknown unconditional: 2027] , Statistics on independence cache: Total cache size (in pairs): 117, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 10, Unknown conditional cache size: 0, Unknown unconditional cache size: 10 - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-25 16:46:50,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R --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 fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- 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-38b53e6 [2022-11-25 16:46:52,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:46:52,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:46:52,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:46:52,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:46:52,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:46:52,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:46:52,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:46:52,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:46:52,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:46:52,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:46:52,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:46:52,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:46:52,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:46:52,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:46:52,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:46:52,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:46:52,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:46:52,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:46:52,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:46:52,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:46:52,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:46:52,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:46:52,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:46:52,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:46:52,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:46:52,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:46:52,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:46:52,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:46:52,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:46:52,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:46:52,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:46:52,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:46:52,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:46:52,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:46:52,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:46:52,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:46:52,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:46:52,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:46:52,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:46:52,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:46:52,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-25 16:46:52,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:46:52,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:46:52,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:46:52,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:46:52,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:46:52,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:46:52,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:46:52,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:46:52,680 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:46:52,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:46:52,681 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:46:52,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:46:52,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:46:52,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:46:52,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:46:52,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:46:52,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 16:46:52,683 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 16:46:52,683 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 16:46:52,683 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:46:52,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:46:52,684 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:46:52,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:46:52,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:46:52,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:46:52,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:46:52,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:46:52,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:46:52,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:46:52,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:46:52,686 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 16:46:52,686 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 16:46:52,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:46:52,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:46:52,687 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:46:52,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:46:52,688 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 16:46:52,688 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2022-11-25 16:46:53,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:46:53,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:46:53,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:46:53,077 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:46:53,077 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:46:53,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-25 16:46:56,345 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:46:56,785 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:46:56,786 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-25 16:46:56,814 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/data/b4409e90f/472d3ca7eb2c444bbb4defa7fea4ebe7/FLAG16df7d113 [2022-11-25 16:46:56,835 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/data/b4409e90f/472d3ca7eb2c444bbb4defa7fea4ebe7 [2022-11-25 16:46:56,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:46:56,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:46:56,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:46:56,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:46:56,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:46:56,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:46:56" (1/1) ... [2022-11-25 16:46:56,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f48dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:56, skipping insertion in model container [2022-11-25 16:46:56,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:46:56" (1/1) ... [2022-11-25 16:46:56,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:46:56,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:46:57,774 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_ab90ecf9-5c00-4306-b5f3-aa102a95548d/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-25 16:46:57,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:46:57,829 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 16:46:57,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:46:57,883 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_ab90ecf9-5c00-4306-b5f3-aa102a95548d/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-25 16:46:57,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:46:57,905 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:46:57,972 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_ab90ecf9-5c00-4306-b5f3-aa102a95548d/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-25 16:46:57,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:46:58,154 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:46:58,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58 WrapperNode [2022-11-25 16:46:58,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:46:58,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:46:58,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:46:58,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:46:58,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,224 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 131 [2022-11-25 16:46:58,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:46:58,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:46:58,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:46:58,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:46:58,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:46:58,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:46:58,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:46:58,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:46:58,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (1/1) ... [2022-11-25 16:46:58,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:46:58,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:58,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:46:58,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab90ecf9-5c00-4306-b5f3-aa102a95548d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:46:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:46:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 16:46:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-25 16:46:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:46:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:46:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 16:46:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:46:58,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:46:58,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 16:46:58,406 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-25 16:46:58,406 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-25 16:46:58,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:46:58,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 16:46:58,409 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:46:58,814 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:46:58,817 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:46:59,377 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:46:59,386 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:46:59,387 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 16:46:59,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:46:59 BoogieIcfgContainer [2022-11-25 16:46:59,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:46:59,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:46:59,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:46:59,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:46:59,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:46:56" (1/3) ... [2022-11-25 16:46:59,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7988cacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:46:59, skipping insertion in model container [2022-11-25 16:46:59,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:58" (2/3) ... [2022-11-25 16:46:59,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7988cacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:46:59, skipping insertion in model container [2022-11-25 16:46:59,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:46:59" (3/3) ... [2022-11-25 16:46:59,399 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2022-11-25 16:46:59,409 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:46:59,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:46:59,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 16:46:59,423 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:46:59,513 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 16:46:59,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 193 transitions, 402 flow [2022-11-25 16:46:59,651 INFO L130 PetriNetUnfolder]: 10/237 cut-off events. [2022-11-25 16:46:59,652 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:46:59,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 237 events. 10/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 408 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2022-11-25 16:46:59,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 193 transitions, 402 flow [2022-11-25 16:46:59,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 179 transitions, 370 flow [2022-11-25 16:46:59,691 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:46:59,712 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 179 transitions, 370 flow [2022-11-25 16:46:59,715 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 179 transitions, 370 flow [2022-11-25 16:46:59,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 179 transitions, 370 flow [2022-11-25 16:46:59,766 INFO L130 PetriNetUnfolder]: 7/214 cut-off events. [2022-11-25 16:46:59,766 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:46:59,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 214 events. 7/214 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 343 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2022-11-25 16:46:59,770 INFO L119 LiptonReduction]: Number of co-enabled transitions 2828 [2022-11-25 16:48:10,943 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 132 DAG size of output: 122 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:48:41,570 WARN L233 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 162 DAG size of output: 154 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:48:59,626 WARN L233 SmtUtils]: Spent 14.32s on a formula simplification. DAG size of input: 164 DAG size of output: 162 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:49:06,563 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:50:35,378 WARN L233 SmtUtils]: Spent 1.48m on a formula simplification. DAG size of input: 207 DAG size of output: 205 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:51:11,351 WARN L233 SmtUtils]: Spent 35.97s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:52:56,275 WARN L233 SmtUtils]: Spent 1.75m on a formula simplification. DAG size of input: 209 DAG size of output: 200 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:53:48,917 WARN L233 SmtUtils]: Spent 52.64s on a formula simplification that was a NOOP. DAG size: 194 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)