./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF --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 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:52:55,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:52:55,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:52:55,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:52:55,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:52:55,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:52:55,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:52:55,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:52:55,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:52:55,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:52:55,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:52:55,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:52:55,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:52:55,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:52:55,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:52:55,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:52:55,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:52:55,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:52:55,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:52:55,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:52:55,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:52:55,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:52:55,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:52:55,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:52:55,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:52:55,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:52:55,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:52:55,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:52:55,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:52:55,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:52:55,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:52:55,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:52:55,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:52:55,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:52:55,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:52:55,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:52:55,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:52:55,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:52:55,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:52:55,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:52:55,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:52:55,986 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:52:56,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:52:56,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:52:56,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:52:56,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:52:56,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:52:56,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:52:56,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:52:56,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:52:56,033 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:52:56,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:52:56,034 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:52:56,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:52:56,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:52:56,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:52:56,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:52:56,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:52:56,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:52:56,036 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:52:56,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:52:56,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:52:56,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:52:56,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:52:56,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:52:56,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:52:56,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:52:56,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:52:56,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:52:56,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:52:56,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:52:56,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:52:56,038 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:52:56,038 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:52:56,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:52:56,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:52:56,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 [2021-11-20 06:52:56,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:52:56,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:52:56,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:52:56,302 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:52:56,303 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:52:56,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2021-11-20 06:52:56,399 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/data/5c0c591cc/68d394f68595438f817f4e2f91df3c89/FLAG78bfc018c [2021-11-20 06:52:57,121 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:52:57,122 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2021-11-20 06:52:57,153 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/data/5c0c591cc/68d394f68595438f817f4e2f91df3c89/FLAG78bfc018c [2021-11-20 06:52:57,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/data/5c0c591cc/68d394f68595438f817f4e2f91df3c89 [2021-11-20 06:52:57,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:52:57,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:52:57,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:52:57,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:52:57,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:52:57,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:52:57" (1/1) ... [2021-11-20 06:52:57,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c8c80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:57, skipping insertion in model container [2021-11-20 06:52:57,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:52:57" (1/1) ... [2021-11-20 06:52:57,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:52:57,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:52:57,573 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-20 06:52:58,096 WARN L230 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_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[75009,75022] [2021-11-20 06:52:58,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:52:58,135 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:52:58,147 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-20 06:52:58,197 WARN L230 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_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[75009,75022] [2021-11-20 06:52:58,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:52:58,329 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:52:58,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58 WrapperNode [2021-11-20 06:52:58,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:52:58,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:52:58,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:52:58,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:52:58,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (1/1) ... [2021-11-20 06:52:58,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (1/1) ... [2021-11-20 06:52:58,409 INFO L137 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2021-11-20 06:52:58,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:52:58,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:52:58,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:52:58,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:52:58,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (1/1) ... [2021-11-20 06:52:58,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (1/1) ... [2021-11-20 06:52:58,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (1/1) ... [2021-11-20 06:52:58,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (1/1) ... [2021-11-20 06:52:58,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (1/1) ... [2021-11-20 06:52:58,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (1/1) ... [2021-11-20 06:52:58,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (1/1) ... [2021-11-20 06:52:58,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:52:58,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:52:58,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:52:58,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:52:58,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (1/1) ... [2021-11-20 06:52:58,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:52:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:52:58,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:52:58,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49cc5fac-50dd-4f1a-8e72-a958cc932cd9/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:52:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 06:52:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:52:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 06:52:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:52:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:52:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:52:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:52:58,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:52:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-11-20 06:52:58,540 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-11-20 06:52:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:52:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:52:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:52:58,542 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 06:52:58,869 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:52:58,871 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:52:59,181 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:52:59,201 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:52:59,201 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:52:59,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:52:59 BoogieIcfgContainer [2021-11-20 06:52:59,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:52:59,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:52:59,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:52:59,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:52:59,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:52:57" (1/3) ... [2021-11-20 06:52:59,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a6f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:52:59, skipping insertion in model container [2021-11-20 06:52:59,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:58" (2/3) ... [2021-11-20 06:52:59,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a6f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:52:59, skipping insertion in model container [2021-11-20 06:52:59,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:52:59" (3/3) ... [2021-11-20 06:52:59,211 INFO L111 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2021-11-20 06:52:59,216 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 06:52:59,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:52:59,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-20 06:52:59,217 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 06:52:59,251 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,251 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,251 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,252 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,252 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,252 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,252 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,252 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,253 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,253 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,253 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,253 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,254 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,254 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,254 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,254 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,254 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,255 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,255 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,255 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,255 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,255 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,256 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,256 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,256 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,256 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,256 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,257 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,257 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,257 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,257 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,257 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,258 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,258 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,258 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,258 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,258 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,259 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,259 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,259 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,259 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,259 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,260 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,260 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,260 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,260 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,261 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,261 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,261 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,261 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,261 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,262 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,262 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,262 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,262 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,262 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,262 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,263 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,263 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,263 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,263 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,263 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,264 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,264 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,264 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,264 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,264 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,265 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,265 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,265 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,265 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,265 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,266 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,266 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,266 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,266 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,266 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,267 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,267 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,267 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,267 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,267 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,268 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,268 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,268 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,268 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,269 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,269 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,269 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,269 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,269 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,270 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,281 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,281 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,282 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,282 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,282 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,282 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,283 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,283 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,283 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,284 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,286 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,286 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,287 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,287 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,287 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,287 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,288 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,288 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,288 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,288 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:52:59,296 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-20 06:52:59,344 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:52:59,355 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:52:59,355 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-20 06:52:59,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 388 flow [2021-11-20 06:52:59,484 INFO L129 PetriNetUnfolder]: 10/231 cut-off events. [2021-11-20 06:52:59,484 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 06:52:59,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 231 events. 10/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 336 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2021-11-20 06:52:59,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 388 flow [2021-11-20 06:52:59,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 356 flow [2021-11-20 06:52:59,526 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-11-20 06:52:59,527 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 06:52:59,527 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:52:59,528 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:52:59,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:52:59,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:52:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash -34102460, now seen corresponding path program 1 times [2021-11-20 06:52:59,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:52:59,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748548609] [2021-11-20 06:52:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:52:59,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:52:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:00,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:00,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748548609] [2021-11-20 06:53:00,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748548609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:00,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:00,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:53:00,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705334612] [2021-11-20 06:53:00,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:00,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:53:00,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:00,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:53:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:53:00,099 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2021-11-20 06:53:00,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 172 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:00,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:00,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2021-11-20 06:53:00,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:00,544 INFO L129 PetriNetUnfolder]: 361/965 cut-off events. [2021-11-20 06:53:00,545 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-11-20 06:53:00,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 965 events. 361/965 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5057 event pairs, 216 based on Foata normal form. 20/933 useless extension candidates. Maximal degree in co-relation 1409. Up to 397 conditions per place. [2021-11-20 06:53:00,563 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 53 selfloop transitions, 17 changer transitions 1/168 dead transitions. [2021-11-20 06:53:00,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 168 transitions, 490 flow [2021-11-20 06:53:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:53:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 06:53:00,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2021-11-20 06:53:00,590 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6314217443249701 [2021-11-20 06:53:00,590 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2021-11-20 06:53:00,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2021-11-20 06:53:00,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:00,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2021-11-20 06:53:00,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:00,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:00,620 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:00,622 INFO L186 Difference]: Start difference. First operand has 172 places, 172 transitions, 356 flow. Second operand 9 states and 1057 transitions. [2021-11-20 06:53:00,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 168 transitions, 490 flow [2021-11-20 06:53:00,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 168 transitions, 482 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 06:53:00,636 INFO L242 Difference]: Finished difference. Result has 170 places, 161 transitions, 367 flow [2021-11-20 06:53:00,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2021-11-20 06:53:00,645 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -2 predicate places. [2021-11-20 06:53:00,645 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 367 flow [2021-11-20 06:53:00,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:00,646 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:00,646 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:00,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:53:00,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:00,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash -888642596, now seen corresponding path program 1 times [2021-11-20 06:53:00,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:00,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925298995] [2021-11-20 06:53:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:00,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:00,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:00,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925298995] [2021-11-20 06:53:00,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925298995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:00,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:00,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:53:00,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176794656] [2021-11-20 06:53:00,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:00,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:53:00,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:00,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:53:00,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:53:00,843 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2021-11-20 06:53:00,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:00,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:00,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2021-11-20 06:53:00,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:01,152 INFO L129 PetriNetUnfolder]: 361/971 cut-off events. [2021-11-20 06:53:01,153 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-11-20 06:53:01,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 971 events. 361/971 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5044 event pairs, 120 based on Foata normal form. 1/940 useless extension candidates. Maximal degree in co-relation 694. Up to 261 conditions per place. [2021-11-20 06:53:01,162 INFO L132 encePairwiseOnDemand]: 167/186 looper letters, 61 selfloop transitions, 18 changer transitions 1/176 dead transitions. [2021-11-20 06:53:01,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 176 transitions, 559 flow [2021-11-20 06:53:01,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:53:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 06:53:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1171 transitions. [2021-11-20 06:53:01,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6295698924731182 [2021-11-20 06:53:01,167 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1171 transitions. [2021-11-20 06:53:01,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1171 transitions. [2021-11-20 06:53:01,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:01,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1171 transitions. [2021-11-20 06:53:01,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.1) internal successors, (1171), 10 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:01,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:01,179 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:01,179 INFO L186 Difference]: Start difference. First operand has 170 places, 161 transitions, 367 flow. Second operand 10 states and 1171 transitions. [2021-11-20 06:53:01,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 176 transitions, 559 flow [2021-11-20 06:53:01,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 176 transitions, 530 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-11-20 06:53:01,188 INFO L242 Difference]: Finished difference. Result has 171 places, 160 transitions, 378 flow [2021-11-20 06:53:01,188 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=378, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2021-11-20 06:53:01,189 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -1 predicate places. [2021-11-20 06:53:01,189 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 378 flow [2021-11-20 06:53:01,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:01,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:01,190 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:01,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:53:01,191 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:01,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash -170107804, now seen corresponding path program 1 times [2021-11-20 06:53:01,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:01,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052604743] [2021-11-20 06:53:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:01,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:01,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:01,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052604743] [2021-11-20 06:53:01,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052604743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:01,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:01,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:53:01,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307996920] [2021-11-20 06:53:01,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:01,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:53:01,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:53:01,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:53:01,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2021-11-20 06:53:01,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:01,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:01,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2021-11-20 06:53:01,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:02,018 INFO L129 PetriNetUnfolder]: 832/1931 cut-off events. [2021-11-20 06:53:02,018 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-11-20 06:53:02,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3674 conditions, 1931 events. 832/1931 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11817 event pairs, 169 based on Foata normal form. 32/1930 useless extension candidates. Maximal degree in co-relation 968. Up to 499 conditions per place. [2021-11-20 06:53:02,038 INFO L132 encePairwiseOnDemand]: 165/186 looper letters, 100 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2021-11-20 06:53:02,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 245 transitions, 862 flow [2021-11-20 06:53:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:53:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-20 06:53:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1540 transitions. [2021-11-20 06:53:02,044 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6368899917287014 [2021-11-20 06:53:02,044 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1540 transitions. [2021-11-20 06:53:02,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1540 transitions. [2021-11-20 06:53:02,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:02,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1540 transitions. [2021-11-20 06:53:02,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.46153846153847) internal successors, (1540), 13 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:02,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:02,059 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:02,059 INFO L186 Difference]: Start difference. First operand has 171 places, 160 transitions, 378 flow. Second operand 13 states and 1540 transitions. [2021-11-20 06:53:02,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 245 transitions, 862 flow [2021-11-20 06:53:02,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 816 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-20 06:53:02,073 INFO L242 Difference]: Finished difference. Result has 183 places, 197 transitions, 648 flow [2021-11-20 06:53:02,073 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=648, PETRI_PLACES=183, PETRI_TRANSITIONS=197} [2021-11-20 06:53:02,075 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 11 predicate places. [2021-11-20 06:53:02,075 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 197 transitions, 648 flow [2021-11-20 06:53:02,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:02,076 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:02,077 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:02,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:53:02,077 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:02,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash 896697388, now seen corresponding path program 1 times [2021-11-20 06:53:02,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:02,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337005535] [2021-11-20 06:53:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:02,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:02,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:02,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337005535] [2021-11-20 06:53:02,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337005535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:02,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:02,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:53:02,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36077382] [2021-11-20 06:53:02,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:02,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:53:02,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:53:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:53:02,247 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2021-11-20 06:53:02,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:02,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:02,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2021-11-20 06:53:02,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:03,089 INFO L129 PetriNetUnfolder]: 1085/2496 cut-off events. [2021-11-20 06:53:03,089 INFO L130 PetriNetUnfolder]: For 10877/10945 co-relation queries the response was YES. [2021-11-20 06:53:03,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8992 conditions, 2496 events. 1085/2496 cut-off events. For 10877/10945 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16659 event pairs, 218 based on Foata normal form. 47/2510 useless extension candidates. Maximal degree in co-relation 7714. Up to 732 conditions per place. [2021-11-20 06:53:03,124 INFO L132 encePairwiseOnDemand]: 167/186 looper letters, 74 selfloop transitions, 48 changer transitions 69/286 dead transitions. [2021-11-20 06:53:03,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 286 transitions, 1732 flow [2021-11-20 06:53:03,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:53:03,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 06:53:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1307 transitions. [2021-11-20 06:53:03,129 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6388074291300098 [2021-11-20 06:53:03,129 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1307 transitions. [2021-11-20 06:53:03,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1307 transitions. [2021-11-20 06:53:03,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:03,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1307 transitions. [2021-11-20 06:53:03,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.81818181818181) internal successors, (1307), 11 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:03,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:03,140 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:03,140 INFO L186 Difference]: Start difference. First operand has 183 places, 197 transitions, 648 flow. Second operand 11 states and 1307 transitions. [2021-11-20 06:53:03,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 286 transitions, 1732 flow [2021-11-20 06:53:03,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 286 transitions, 1732 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 06:53:03,167 INFO L242 Difference]: Finished difference. Result has 201 places, 203 transitions, 961 flow [2021-11-20 06:53:03,168 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=961, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2021-11-20 06:53:03,168 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 29 predicate places. [2021-11-20 06:53:03,169 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 961 flow [2021-11-20 06:53:03,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:03,169 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:03,169 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:03,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:53:03,170 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:03,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1717393044, now seen corresponding path program 1 times [2021-11-20 06:53:03,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:03,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217768220] [2021-11-20 06:53:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:03,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:03,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:03,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217768220] [2021-11-20 06:53:03,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217768220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:03,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:03,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:53:03,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924648445] [2021-11-20 06:53:03,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:03,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:53:03,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:53:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:53:03,304 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 186 [2021-11-20 06:53:03,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 961 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:03,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:03,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 186 [2021-11-20 06:53:03,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:03,412 INFO L129 PetriNetUnfolder]: 47/289 cut-off events. [2021-11-20 06:53:03,412 INFO L130 PetriNetUnfolder]: For 791/871 co-relation queries the response was YES. [2021-11-20 06:53:03,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 289 events. 47/289 cut-off events. For 791/871 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 972 event pairs, 11 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 633. Up to 31 conditions per place. [2021-11-20 06:53:03,416 INFO L132 encePairwiseOnDemand]: 181/186 looper letters, 19 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2021-11-20 06:53:03,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 139 transitions, 456 flow [2021-11-20 06:53:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:53:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-20 06:53:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 966 transitions. [2021-11-20 06:53:03,419 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2021-11-20 06:53:03,420 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 966 transitions. [2021-11-20 06:53:03,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 966 transitions. [2021-11-20 06:53:03,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:03,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 966 transitions. [2021-11-20 06:53:03,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:03,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:03,427 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:03,427 INFO L186 Difference]: Start difference. First operand has 201 places, 203 transitions, 961 flow. Second operand 6 states and 966 transitions. [2021-11-20 06:53:03,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 139 transitions, 456 flow [2021-11-20 06:53:03,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 336 flow, removed 40 selfloop flow, removed 19 redundant places. [2021-11-20 06:53:03,433 INFO L242 Difference]: Finished difference. Result has 144 places, 131 transitions, 282 flow [2021-11-20 06:53:03,434 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2021-11-20 06:53:03,436 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -28 predicate places. [2021-11-20 06:53:03,436 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 282 flow [2021-11-20 06:53:03,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:03,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:03,438 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:03,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:53:03,438 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:03,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:03,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1971603667, now seen corresponding path program 1 times [2021-11-20 06:53:03,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:03,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588623562] [2021-11-20 06:53:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:03,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:04,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:04,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588623562] [2021-11-20 06:53:04,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588623562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:04,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:04,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 06:53:04,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232103893] [2021-11-20 06:53:04,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:04,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:53:04,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:04,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:53:04,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:53:04,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-11-20 06:53:04,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 282 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:04,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:04,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-11-20 06:53:04,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:06,334 INFO L129 PetriNetUnfolder]: 578/1337 cut-off events. [2021-11-20 06:53:06,334 INFO L130 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2021-11-20 06:53:06,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 1337 events. 578/1337 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6912 event pairs, 190 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 2710. Up to 378 conditions per place. [2021-11-20 06:53:06,345 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 122 selfloop transitions, 27 changer transitions 0/212 dead transitions. [2021-11-20 06:53:06,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 212 transitions, 778 flow [2021-11-20 06:53:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:53:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 06:53:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1803 transitions. [2021-11-20 06:53:06,352 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5101867572156197 [2021-11-20 06:53:06,353 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1803 transitions. [2021-11-20 06:53:06,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1803 transitions. [2021-11-20 06:53:06,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:06,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1803 transitions. [2021-11-20 06:53:06,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 94.89473684210526) internal successors, (1803), 19 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:06,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:06,369 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:06,369 INFO L186 Difference]: Start difference. First operand has 144 places, 131 transitions, 282 flow. Second operand 19 states and 1803 transitions. [2021-11-20 06:53:06,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 212 transitions, 778 flow [2021-11-20 06:53:06,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 212 transitions, 771 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 06:53:06,375 INFO L242 Difference]: Finished difference. Result has 168 places, 147 transitions, 423 flow [2021-11-20 06:53:06,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=423, PETRI_PLACES=168, PETRI_TRANSITIONS=147} [2021-11-20 06:53:06,377 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -4 predicate places. [2021-11-20 06:53:06,377 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 147 transitions, 423 flow [2021-11-20 06:53:06,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:06,378 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:06,378 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:06,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:53:06,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:06,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:06,379 INFO L85 PathProgramCache]: Analyzing trace with hash -649640311, now seen corresponding path program 2 times [2021-11-20 06:53:06,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:06,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555933378] [2021-11-20 06:53:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:06,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:06,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:06,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555933378] [2021-11-20 06:53:06,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555933378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:06,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:06,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:53:06,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559409574] [2021-11-20 06:53:06,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:06,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:53:06,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:53:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:53:06,908 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-11-20 06:53:06,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 147 transitions, 423 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:06,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:06,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-11-20 06:53:06,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:07,937 INFO L129 PetriNetUnfolder]: 540/1472 cut-off events. [2021-11-20 06:53:07,938 INFO L130 PetriNetUnfolder]: For 674/700 co-relation queries the response was YES. [2021-11-20 06:53:07,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3349 conditions, 1472 events. 540/1472 cut-off events. For 674/700 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9015 event pairs, 101 based on Foata normal form. 17/1456 useless extension candidates. Maximal degree in co-relation 3332. Up to 376 conditions per place. [2021-11-20 06:53:07,952 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 114 selfloop transitions, 42 changer transitions 0/222 dead transitions. [2021-11-20 06:53:07,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 222 transitions, 1022 flow [2021-11-20 06:53:07,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:53:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 06:53:07,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1642 transitions. [2021-11-20 06:53:07,959 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.519291587602783 [2021-11-20 06:53:07,960 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1642 transitions. [2021-11-20 06:53:07,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1642 transitions. [2021-11-20 06:53:07,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:07,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1642 transitions. [2021-11-20 06:53:07,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 96.58823529411765) internal successors, (1642), 17 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:07,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 186.0) internal successors, (3348), 18 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:07,974 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 186.0) internal successors, (3348), 18 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:07,974 INFO L186 Difference]: Start difference. First operand has 168 places, 147 transitions, 423 flow. Second operand 17 states and 1642 transitions. [2021-11-20 06:53:07,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 222 transitions, 1022 flow [2021-11-20 06:53:07,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 222 transitions, 1006 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-20 06:53:07,986 INFO L242 Difference]: Finished difference. Result has 186 places, 174 transitions, 725 flow [2021-11-20 06:53:07,987 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=725, PETRI_PLACES=186, PETRI_TRANSITIONS=174} [2021-11-20 06:53:07,987 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 14 predicate places. [2021-11-20 06:53:07,988 INFO L470 AbstractCegarLoop]: Abstraction has has 186 places, 174 transitions, 725 flow [2021-11-20 06:53:07,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:07,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:07,990 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:07,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:53:07,990 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:07,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:07,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1361320503, now seen corresponding path program 3 times [2021-11-20 06:53:07,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:07,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016905596] [2021-11-20 06:53:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:07,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:08,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:08,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016905596] [2021-11-20 06:53:08,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016905596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:08,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:08,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:53:08,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311683699] [2021-11-20 06:53:08,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:08,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:53:08,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:08,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:53:08,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:53:08,596 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-11-20 06:53:08,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 174 transitions, 725 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:08,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:08,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-11-20 06:53:08,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:09,822 INFO L129 PetriNetUnfolder]: 778/2236 cut-off events. [2021-11-20 06:53:09,822 INFO L130 PetriNetUnfolder]: For 2137/2162 co-relation queries the response was YES. [2021-11-20 06:53:09,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5834 conditions, 2236 events. 778/2236 cut-off events. For 2137/2162 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 16283 event pairs, 242 based on Foata normal form. 26/2206 useless extension candidates. Maximal degree in co-relation 5809. Up to 624 conditions per place. [2021-11-20 06:53:09,846 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 157 selfloop transitions, 45 changer transitions 0/268 dead transitions. [2021-11-20 06:53:09,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 268 transitions, 1625 flow [2021-11-20 06:53:09,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:53:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 06:53:09,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1837 transitions. [2021-11-20 06:53:09,856 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.519807583474816 [2021-11-20 06:53:09,856 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1837 transitions. [2021-11-20 06:53:09,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1837 transitions. [2021-11-20 06:53:09,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:09,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1837 transitions. [2021-11-20 06:53:09,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.6842105263158) internal successors, (1837), 19 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:09,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:09,874 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:09,875 INFO L186 Difference]: Start difference. First operand has 186 places, 174 transitions, 725 flow. Second operand 19 states and 1837 transitions. [2021-11-20 06:53:09,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 268 transitions, 1625 flow [2021-11-20 06:53:09,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 268 transitions, 1608 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-20 06:53:09,892 INFO L242 Difference]: Finished difference. Result has 207 places, 194 transitions, 1021 flow [2021-11-20 06:53:09,893 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1021, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2021-11-20 06:53:09,895 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 35 predicate places. [2021-11-20 06:53:09,895 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 1021 flow [2021-11-20 06:53:09,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:09,896 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:09,896 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:09,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:53:09,897 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:09,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:09,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1315149385, now seen corresponding path program 4 times [2021-11-20 06:53:09,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:09,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565630523] [2021-11-20 06:53:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:09,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:10,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:10,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565630523] [2021-11-20 06:53:10,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565630523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:10,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:10,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:53:10,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420427446] [2021-11-20 06:53:10,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:10,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:53:10,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:10,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:53:10,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:53:10,434 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-11-20 06:53:10,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 1021 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:10,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:10,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-11-20 06:53:10,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:11,621 INFO L129 PetriNetUnfolder]: 781/2308 cut-off events. [2021-11-20 06:53:11,621 INFO L130 PetriNetUnfolder]: For 3726/3764 co-relation queries the response was YES. [2021-11-20 06:53:11,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6418 conditions, 2308 events. 781/2308 cut-off events. For 3726/3764 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 16758 event pairs, 407 based on Foata normal form. 35/2285 useless extension candidates. Maximal degree in co-relation 6383. Up to 896 conditions per place. [2021-11-20 06:53:11,651 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 144 selfloop transitions, 49 changer transitions 0/259 dead transitions. [2021-11-20 06:53:11,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 259 transitions, 1771 flow [2021-11-20 06:53:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:53:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:53:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1728 transitions. [2021-11-20 06:53:11,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2021-11-20 06:53:11,655 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1728 transitions. [2021-11-20 06:53:11,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1728 transitions. [2021-11-20 06:53:11,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:11,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1728 transitions. [2021-11-20 06:53:11,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 96.0) internal successors, (1728), 18 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:11,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:11,668 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:11,668 INFO L186 Difference]: Start difference. First operand has 207 places, 194 transitions, 1021 flow. Second operand 18 states and 1728 transitions. [2021-11-20 06:53:11,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 259 transitions, 1771 flow [2021-11-20 06:53:11,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 259 transitions, 1722 flow, removed 17 selfloop flow, removed 5 redundant places. [2021-11-20 06:53:11,696 INFO L242 Difference]: Finished difference. Result has 229 places, 207 transitions, 1256 flow [2021-11-20 06:53:11,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1256, PETRI_PLACES=229, PETRI_TRANSITIONS=207} [2021-11-20 06:53:11,698 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 57 predicate places. [2021-11-20 06:53:11,698 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 207 transitions, 1256 flow [2021-11-20 06:53:11,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:11,715 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:11,715 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:11,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:53:11,715 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:11,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2134247871, now seen corresponding path program 5 times [2021-11-20 06:53:11,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:11,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396206712] [2021-11-20 06:53:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:11,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:12,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:12,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396206712] [2021-11-20 06:53:12,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396206712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:12,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:12,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:53:12,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376301994] [2021-11-20 06:53:12,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:12,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:53:12,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:12,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:53:12,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:53:12,295 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-11-20 06:53:12,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 207 transitions, 1256 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:12,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:12,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-11-20 06:53:12,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:13,551 INFO L129 PetriNetUnfolder]: 784/2388 cut-off events. [2021-11-20 06:53:13,551 INFO L130 PetriNetUnfolder]: For 5606/5655 co-relation queries the response was YES. [2021-11-20 06:53:13,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7080 conditions, 2388 events. 784/2388 cut-off events. For 5606/5655 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17597 event pairs, 156 based on Foata normal form. 35/2387 useless extension candidates. Maximal degree in co-relation 7034. Up to 520 conditions per place. [2021-11-20 06:53:13,577 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 158 selfloop transitions, 84 changer transitions 0/308 dead transitions. [2021-11-20 06:53:13,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 308 transitions, 2388 flow [2021-11-20 06:53:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:53:13,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 06:53:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1847 transitions. [2021-11-20 06:53:13,582 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5226372382569326 [2021-11-20 06:53:13,582 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1847 transitions. [2021-11-20 06:53:13,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1847 transitions. [2021-11-20 06:53:13,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:13,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1847 transitions. [2021-11-20 06:53:13,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.21052631578948) internal successors, (1847), 19 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) [2021-11-20 06:53:13,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:13,597 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:13,597 INFO L186 Difference]: Start difference. First operand has 229 places, 207 transitions, 1256 flow. Second operand 19 states and 1847 transitions. [2021-11-20 06:53:13,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 308 transitions, 2388 flow [2021-11-20 06:53:13,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 308 transitions, 2339 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-11-20 06:53:13,637 INFO L242 Difference]: Finished difference. Result has 249 places, 236 transitions, 1837 flow [2021-11-20 06:53:13,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1837, PETRI_PLACES=249, PETRI_TRANSITIONS=236} [2021-11-20 06:53:13,639 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 77 predicate places. [2021-11-20 06:53:13,640 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 236 transitions, 1837 flow [2021-11-20 06:53:13,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:13,640 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:13,641 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:13,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:53:13,641 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:13,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:13,642 INFO L85 PathProgramCache]: Analyzing trace with hash 390621125, now seen corresponding path program 6 times [2021-11-20 06:53:13,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:13,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707562698] [2021-11-20 06:53:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:13,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:14,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:14,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707562698] [2021-11-20 06:53:14,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707562698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:14,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:14,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 06:53:14,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393301296] [2021-11-20 06:53:14,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:14,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:53:14,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:53:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:53:14,315 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-11-20 06:53:14,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 236 transitions, 1837 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:14,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:14,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-11-20 06:53:14,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:16,468 INFO L129 PetriNetUnfolder]: 1338/3677 cut-off events. [2021-11-20 06:53:16,469 INFO L130 PetriNetUnfolder]: For 12228/12228 co-relation queries the response was YES. [2021-11-20 06:53:16,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11959 conditions, 3677 events. 1338/3677 cut-off events. For 12228/12228 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 29468 event pairs, 266 based on Foata normal form. 1/3581 useless extension candidates. Maximal degree in co-relation 11906. Up to 1533 conditions per place. [2021-11-20 06:53:16,505 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 219 selfloop transitions, 85 changer transitions 0/367 dead transitions. [2021-11-20 06:53:16,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 367 transitions, 3587 flow [2021-11-20 06:53:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:53:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 06:53:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1811 transitions. [2021-11-20 06:53:16,511 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.512450481041313 [2021-11-20 06:53:16,511 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1811 transitions. [2021-11-20 06:53:16,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1811 transitions. [2021-11-20 06:53:16,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:16,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1811 transitions. [2021-11-20 06:53:16,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.3157894736842) internal successors, (1811), 19 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:16,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:16,531 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:16,532 INFO L186 Difference]: Start difference. First operand has 249 places, 236 transitions, 1837 flow. Second operand 19 states and 1811 transitions. [2021-11-20 06:53:16,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 367 transitions, 3587 flow [2021-11-20 06:53:16,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 367 transitions, 3480 flow, removed 35 selfloop flow, removed 6 redundant places. [2021-11-20 06:53:16,626 INFO L242 Difference]: Finished difference. Result has 271 places, 275 transitions, 2609 flow [2021-11-20 06:53:16,627 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2609, PETRI_PLACES=271, PETRI_TRANSITIONS=275} [2021-11-20 06:53:16,628 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 99 predicate places. [2021-11-20 06:53:16,628 INFO L470 AbstractCegarLoop]: Abstraction has has 271 places, 275 transitions, 2609 flow [2021-11-20 06:53:16,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:16,629 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:16,629 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:16,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:53:16,630 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:16,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:16,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2131779899, now seen corresponding path program 7 times [2021-11-20 06:53:16,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:16,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879042831] [2021-11-20 06:53:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:16,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:17,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:17,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879042831] [2021-11-20 06:53:17,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879042831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:17,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:17,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:53:17,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809596836] [2021-11-20 06:53:17,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:17,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:53:17,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:17,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:53:17,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:53:17,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-11-20 06:53:17,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 275 transitions, 2609 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:17,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:17,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-11-20 06:53:17,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:18,667 INFO L129 PetriNetUnfolder]: 1657/4800 cut-off events. [2021-11-20 06:53:18,668 INFO L130 PetriNetUnfolder]: For 21435/21569 co-relation queries the response was YES. [2021-11-20 06:53:18,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16231 conditions, 4800 events. 1657/4800 cut-off events. For 21435/21569 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 42898 event pairs, 403 based on Foata normal form. 101/4767 useless extension candidates. Maximal degree in co-relation 16168. Up to 1480 conditions per place. [2021-11-20 06:53:18,723 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 230 selfloop transitions, 107 changer transitions 0/407 dead transitions. [2021-11-20 06:53:18,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 407 transitions, 4825 flow [2021-11-20 06:53:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:53:18,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 06:53:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1639 transitions. [2021-11-20 06:53:18,728 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5183428209993675 [2021-11-20 06:53:18,728 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1639 transitions. [2021-11-20 06:53:18,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1639 transitions. [2021-11-20 06:53:18,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:18,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1639 transitions. [2021-11-20 06:53:18,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 96.41176470588235) internal successors, (1639), 17 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:18,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 186.0) internal successors, (3348), 18 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:18,740 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 186.0) internal successors, (3348), 18 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:18,740 INFO L186 Difference]: Start difference. First operand has 271 places, 275 transitions, 2609 flow. Second operand 17 states and 1639 transitions. [2021-11-20 06:53:18,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 407 transitions, 4825 flow [2021-11-20 06:53:18,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 407 transitions, 4696 flow, removed 55 selfloop flow, removed 6 redundant places. [2021-11-20 06:53:18,876 INFO L242 Difference]: Finished difference. Result has 289 places, 325 transitions, 3654 flow [2021-11-20 06:53:18,876 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3654, PETRI_PLACES=289, PETRI_TRANSITIONS=325} [2021-11-20 06:53:18,877 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 117 predicate places. [2021-11-20 06:53:18,878 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 325 transitions, 3654 flow [2021-11-20 06:53:18,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:18,878 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:18,878 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:18,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:53:18,879 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:18,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash -846732737, now seen corresponding path program 8 times [2021-11-20 06:53:18,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:18,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064576186] [2021-11-20 06:53:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:18,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:19,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:19,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064576186] [2021-11-20 06:53:19,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064576186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:19,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:19,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:53:19,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024859830] [2021-11-20 06:53:19,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:19,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:53:19,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:19,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:53:19,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:53:19,412 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-11-20 06:53:19,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 325 transitions, 3654 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:19,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:19,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-11-20 06:53:19,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:21,379 INFO L129 PetriNetUnfolder]: 1946/6053 cut-off events. [2021-11-20 06:53:21,379 INFO L130 PetriNetUnfolder]: For 33434/33628 co-relation queries the response was YES. [2021-11-20 06:53:21,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22262 conditions, 6053 events. 1946/6053 cut-off events. For 33434/33628 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 58138 event pairs, 443 based on Foata normal form. 157/6066 useless extension candidates. Maximal degree in co-relation 22191. Up to 1366 conditions per place. [2021-11-20 06:53:21,440 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 295 selfloop transitions, 163 changer transitions 0/528 dead transitions. [2021-11-20 06:53:21,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 528 transitions, 7133 flow [2021-11-20 06:53:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:53:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 06:53:21,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1844 transitions. [2021-11-20 06:53:21,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5217883418222977 [2021-11-20 06:53:21,445 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1844 transitions. [2021-11-20 06:53:21,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1844 transitions. [2021-11-20 06:53:21,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:21,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1844 transitions. [2021-11-20 06:53:21,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.05263157894737) internal successors, (1844), 19 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:21,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:21,455 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:21,455 INFO L186 Difference]: Start difference. First operand has 289 places, 325 transitions, 3654 flow. Second operand 19 states and 1844 transitions. [2021-11-20 06:53:21,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 528 transitions, 7133 flow [2021-11-20 06:53:21,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 528 transitions, 7070 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-11-20 06:53:21,685 INFO L242 Difference]: Finished difference. Result has 310 places, 394 transitions, 5461 flow [2021-11-20 06:53:21,686 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=3591, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5461, PETRI_PLACES=310, PETRI_TRANSITIONS=394} [2021-11-20 06:53:21,687 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 138 predicate places. [2021-11-20 06:53:21,687 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 394 transitions, 5461 flow [2021-11-20 06:53:21,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:21,688 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:21,688 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:21,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:53:21,688 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:21,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash 843063635, now seen corresponding path program 9 times [2021-11-20 06:53:21,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:21,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601497358] [2021-11-20 06:53:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:21,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:22,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601497358] [2021-11-20 06:53:22,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601497358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:22,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:22,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 06:53:22,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241613139] [2021-11-20 06:53:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:22,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:53:22,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:53:22,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:53:22,474 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-11-20 06:53:22,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 394 transitions, 5461 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:22,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:22,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-11-20 06:53:22,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:25,792 INFO L129 PetriNetUnfolder]: 2252/6675 cut-off events. [2021-11-20 06:53:25,793 INFO L130 PetriNetUnfolder]: For 41779/41791 co-relation queries the response was YES. [2021-11-20 06:53:25,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26933 conditions, 6675 events. 2252/6675 cut-off events. For 41779/41791 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 63682 event pairs, 638 based on Foata normal form. 7/6548 useless extension candidates. Maximal degree in co-relation 26852. Up to 2503 conditions per place. [2021-11-20 06:53:25,860 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 306 selfloop transitions, 169 changer transitions 0/538 dead transitions. [2021-11-20 06:53:25,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 538 transitions, 7991 flow [2021-11-20 06:53:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:53:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 06:53:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1906 transitions. [2021-11-20 06:53:25,865 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5123655913978494 [2021-11-20 06:53:25,865 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1906 transitions. [2021-11-20 06:53:25,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1906 transitions. [2021-11-20 06:53:25,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:25,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1906 transitions. [2021-11-20 06:53:25,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.3) internal successors, (1906), 20 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:25,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:25,876 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:25,876 INFO L186 Difference]: Start difference. First operand has 310 places, 394 transitions, 5461 flow. Second operand 20 states and 1906 transitions. [2021-11-20 06:53:25,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 538 transitions, 7991 flow [2021-11-20 06:53:26,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 538 transitions, 7904 flow, removed 34 selfloop flow, removed 6 redundant places. [2021-11-20 06:53:26,252 INFO L242 Difference]: Finished difference. Result has 331 places, 425 transitions, 6582 flow [2021-11-20 06:53:26,253 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=5402, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6582, PETRI_PLACES=331, PETRI_TRANSITIONS=425} [2021-11-20 06:53:26,253 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 159 predicate places. [2021-11-20 06:53:26,253 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 425 transitions, 6582 flow [2021-11-20 06:53:26,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:26,254 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:26,254 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:26,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:53:26,254 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:26,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:26,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1210302561, now seen corresponding path program 10 times [2021-11-20 06:53:26,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:26,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557516356] [2021-11-20 06:53:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:26,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:26,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:26,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557516356] [2021-11-20 06:53:26,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557516356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:26,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:26,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:53:26,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62958780] [2021-11-20 06:53:26,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:26,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:53:26,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:26,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:53:26,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:53:26,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-11-20 06:53:26,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 425 transitions, 6582 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:26,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:26,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-11-20 06:53:26,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:29,439 INFO L129 PetriNetUnfolder]: 2226/7381 cut-off events. [2021-11-20 06:53:29,439 INFO L130 PetriNetUnfolder]: For 59785/59985 co-relation queries the response was YES. [2021-11-20 06:53:29,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30324 conditions, 7381 events. 2226/7381 cut-off events. For 59785/59985 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 74711 event pairs, 1006 based on Foata normal form. 168/7382 useless extension candidates. Maximal degree in co-relation 30235. Up to 2207 conditions per place. [2021-11-20 06:53:29,606 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 346 selfloop transitions, 187 changer transitions 0/603 dead transitions. [2021-11-20 06:53:29,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 603 transitions, 10218 flow [2021-11-20 06:53:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:53:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 06:53:29,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1836 transitions. [2021-11-20 06:53:29,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5195246179966044 [2021-11-20 06:53:29,611 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1836 transitions. [2021-11-20 06:53:29,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1836 transitions. [2021-11-20 06:53:29,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:29,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1836 transitions. [2021-11-20 06:53:29,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.63157894736842) internal successors, (1836), 19 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:29,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:29,621 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:29,621 INFO L186 Difference]: Start difference. First operand has 331 places, 425 transitions, 6582 flow. Second operand 19 states and 1836 transitions. [2021-11-20 06:53:29,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 603 transitions, 10218 flow [2021-11-20 06:53:30,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 603 transitions, 10103 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-11-20 06:53:30,155 INFO L242 Difference]: Finished difference. Result has 350 places, 480 transitions, 8340 flow [2021-11-20 06:53:30,157 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=6484, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8340, PETRI_PLACES=350, PETRI_TRANSITIONS=480} [2021-11-20 06:53:30,157 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 178 predicate places. [2021-11-20 06:53:30,157 INFO L470 AbstractCegarLoop]: Abstraction has has 350 places, 480 transitions, 8340 flow [2021-11-20 06:53:30,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:30,158 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:30,158 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:30,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:53:30,159 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1070063403, now seen corresponding path program 11 times [2021-11-20 06:53:30,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:30,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780528838] [2021-11-20 06:53:30,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:30,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:30,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:30,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780528838] [2021-11-20 06:53:30,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780528838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:30,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:30,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 06:53:30,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079456265] [2021-11-20 06:53:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:30,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:53:30,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:53:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:53:30,759 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-11-20 06:53:30,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 480 transitions, 8340 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:30,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:30,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-11-20 06:53:30,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:35,317 INFO L129 PetriNetUnfolder]: 3623/11062 cut-off events. [2021-11-20 06:53:35,317 INFO L130 PetriNetUnfolder]: For 87809/87823 co-relation queries the response was YES. [2021-11-20 06:53:35,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47204 conditions, 11062 events. 3623/11062 cut-off events. For 87809/87823 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 119089 event pairs, 1406 based on Foata normal form. 15/10835 useless extension candidates. Maximal degree in co-relation 47105. Up to 3142 conditions per place. [2021-11-20 06:53:35,443 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 407 selfloop transitions, 215 changer transitions 0/685 dead transitions. [2021-11-20 06:53:35,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 685 transitions, 12579 flow [2021-11-20 06:53:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:53:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 06:53:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1810 transitions. [2021-11-20 06:53:35,448 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5121675155631012 [2021-11-20 06:53:35,448 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1810 transitions. [2021-11-20 06:53:35,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1810 transitions. [2021-11-20 06:53:35,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:35,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1810 transitions. [2021-11-20 06:53:35,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.26315789473684) internal successors, (1810), 19 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:35,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:35,458 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:35,458 INFO L186 Difference]: Start difference. First operand has 350 places, 480 transitions, 8340 flow. Second operand 19 states and 1810 transitions. [2021-11-20 06:53:35,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 685 transitions, 12579 flow [2021-11-20 06:53:36,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 685 transitions, 12452 flow, removed 56 selfloop flow, removed 5 redundant places. [2021-11-20 06:53:36,263 INFO L242 Difference]: Finished difference. Result has 374 places, 552 transitions, 10527 flow [2021-11-20 06:53:36,264 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=8221, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10527, PETRI_PLACES=374, PETRI_TRANSITIONS=552} [2021-11-20 06:53:36,265 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 202 predicate places. [2021-11-20 06:53:36,265 INFO L470 AbstractCegarLoop]: Abstraction has has 374 places, 552 transitions, 10527 flow [2021-11-20 06:53:36,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:36,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:36,266 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:36,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 06:53:36,266 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:36,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:36,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1001256335, now seen corresponding path program 12 times [2021-11-20 06:53:36,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:36,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263695085] [2021-11-20 06:53:36,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:36,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:36,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:36,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263695085] [2021-11-20 06:53:36,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263695085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:36,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:36,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 06:53:36,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951086209] [2021-11-20 06:53:36,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:36,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:53:36,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:36,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:53:36,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:53:36,803 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-11-20 06:53:36,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 552 transitions, 10527 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:36,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:36,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-11-20 06:53:36,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:42,024 INFO L129 PetriNetUnfolder]: 4020/12472 cut-off events. [2021-11-20 06:53:42,025 INFO L130 PetriNetUnfolder]: For 116296/116309 co-relation queries the response was YES. [2021-11-20 06:53:42,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54678 conditions, 12472 events. 4020/12472 cut-off events. For 116296/116309 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 137807 event pairs, 1788 based on Foata normal form. 12/12233 useless extension candidates. Maximal degree in co-relation 54568. Up to 4510 conditions per place. [2021-11-20 06:53:42,321 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 455 selfloop transitions, 238 changer transitions 0/756 dead transitions. [2021-11-20 06:53:42,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 756 transitions, 15028 flow [2021-11-20 06:53:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:53:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 06:53:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1815 transitions. [2021-11-20 06:53:42,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5135823429541596 [2021-11-20 06:53:42,325 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1815 transitions. [2021-11-20 06:53:42,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1815 transitions. [2021-11-20 06:53:42,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:42,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1815 transitions. [2021-11-20 06:53:42,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.52631578947368) internal successors, (1815), 19 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:42,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:42,334 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:42,335 INFO L186 Difference]: Start difference. First operand has 374 places, 552 transitions, 10527 flow. Second operand 19 states and 1815 transitions. [2021-11-20 06:53:42,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 756 transitions, 15028 flow [2021-11-20 06:53:43,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 756 transitions, 14784 flow, removed 114 selfloop flow, removed 5 redundant places. [2021-11-20 06:53:43,271 INFO L242 Difference]: Finished difference. Result has 398 places, 619 transitions, 12693 flow [2021-11-20 06:53:43,272 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=10296, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12693, PETRI_PLACES=398, PETRI_TRANSITIONS=619} [2021-11-20 06:53:43,272 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 226 predicate places. [2021-11-20 06:53:43,272 INFO L470 AbstractCegarLoop]: Abstraction has has 398 places, 619 transitions, 12693 flow [2021-11-20 06:53:43,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:43,273 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:43,273 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:43,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 06:53:43,273 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:43,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:43,273 INFO L85 PathProgramCache]: Analyzing trace with hash -857445547, now seen corresponding path program 13 times [2021-11-20 06:53:43,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:43,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660066725] [2021-11-20 06:53:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:43,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:43,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:43,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660066725] [2021-11-20 06:53:43,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660066725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:43,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:43,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 06:53:43,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587479040] [2021-11-20 06:53:43,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:43,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:53:43,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:43,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:53:43,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:53:43,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-11-20 06:53:43,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 619 transitions, 12693 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:43,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:43,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-11-20 06:53:43,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:50,252 INFO L129 PetriNetUnfolder]: 4017/12394 cut-off events. [2021-11-20 06:53:50,252 INFO L130 PetriNetUnfolder]: For 130817/130887 co-relation queries the response was YES. [2021-11-20 06:53:50,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56883 conditions, 12394 events. 4017/12394 cut-off events. For 130817/130887 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 137282 event pairs, 682 based on Foata normal form. 32/12106 useless extension candidates. Maximal degree in co-relation 56762. Up to 2798 conditions per place. [2021-11-20 06:53:50,412 INFO L132 encePairwiseOnDemand]: 158/186 looper letters, 454 selfloop transitions, 342 changer transitions 0/859 dead transitions. [2021-11-20 06:53:50,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 859 transitions, 17366 flow [2021-11-20 06:53:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 06:53:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 06:53:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2761 transitions. [2021-11-20 06:53:50,417 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5118650352243234 [2021-11-20 06:53:50,417 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2761 transitions. [2021-11-20 06:53:50,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2761 transitions. [2021-11-20 06:53:50,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:50,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2761 transitions. [2021-11-20 06:53:50,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 95.20689655172414) internal successors, (2761), 29 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:50,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:50,430 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:50,430 INFO L186 Difference]: Start difference. First operand has 398 places, 619 transitions, 12693 flow. Second operand 29 states and 2761 transitions. [2021-11-20 06:53:50,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 859 transitions, 17366 flow [2021-11-20 06:53:51,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 859 transitions, 17018 flow, removed 163 selfloop flow, removed 5 redundant places. [2021-11-20 06:53:51,746 INFO L242 Difference]: Finished difference. Result has 432 places, 687 transitions, 14922 flow [2021-11-20 06:53:51,746 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=12386, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14922, PETRI_PLACES=432, PETRI_TRANSITIONS=687} [2021-11-20 06:53:51,747 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 260 predicate places. [2021-11-20 06:53:51,747 INFO L470 AbstractCegarLoop]: Abstraction has has 432 places, 687 transitions, 14922 flow [2021-11-20 06:53:51,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:51,747 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:53:51,747 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:51,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 06:53:51,747 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:53:51,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2002716609, now seen corresponding path program 14 times [2021-11-20 06:53:51,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:53:51,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557290844] [2021-11-20 06:53:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:51,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:53:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:52,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:53:52,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557290844] [2021-11-20 06:53:52,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557290844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:52,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:52,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 06:53:52,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871660534] [2021-11-20 06:53:52,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:52,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:53:52,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:52,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:53:52,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:53:52,318 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-11-20 06:53:52,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 687 transitions, 14922 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:52,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:53:52,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-11-20 06:53:52,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:53:59,114 INFO L129 PetriNetUnfolder]: 4017/12784 cut-off events. [2021-11-20 06:53:59,114 INFO L130 PetriNetUnfolder]: For 153192/153206 co-relation queries the response was YES. [2021-11-20 06:53:59,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61007 conditions, 12784 events. 4017/12784 cut-off events. For 153192/153206 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 143639 event pairs, 1620 based on Foata normal form. 16/12498 useless extension candidates. Maximal degree in co-relation 60875. Up to 4044 conditions per place. [2021-11-20 06:53:59,384 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 563 selfloop transitions, 305 changer transitions 0/931 dead transitions. [2021-11-20 06:53:59,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 931 transitions, 20485 flow [2021-11-20 06:53:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:53:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-20 06:53:59,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2462 transitions. [2021-11-20 06:53:59,387 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5090984284532671 [2021-11-20 06:53:59,387 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2462 transitions. [2021-11-20 06:53:59,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2462 transitions. [2021-11-20 06:53:59,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:53:59,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2462 transitions. [2021-11-20 06:53:59,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.6923076923077) internal successors, (2462), 26 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:59,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:59,401 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:59,402 INFO L186 Difference]: Start difference. First operand has 432 places, 687 transitions, 14922 flow. Second operand 26 states and 2462 transitions. [2021-11-20 06:53:59,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 931 transitions, 20485 flow [2021-11-20 06:54:01,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 931 transitions, 20284 flow, removed 86 selfloop flow, removed 6 redundant places. [2021-11-20 06:54:01,271 INFO L242 Difference]: Finished difference. Result has 462 places, 771 transitions, 17915 flow [2021-11-20 06:54:01,273 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=14753, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=17915, PETRI_PLACES=462, PETRI_TRANSITIONS=771} [2021-11-20 06:54:01,273 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 290 predicate places. [2021-11-20 06:54:01,274 INFO L470 AbstractCegarLoop]: Abstraction has has 462 places, 771 transitions, 17915 flow [2021-11-20 06:54:01,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:01,274 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:54:01,274 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:54:01,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 06:54:01,275 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:54:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:54:01,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1524950515, now seen corresponding path program 15 times [2021-11-20 06:54:01,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:54:01,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780327960] [2021-11-20 06:54:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:54:01,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:54:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:54:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:54:01,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:54:01,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780327960] [2021-11-20 06:54:01,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780327960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:54:01,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:54:01,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 06:54:01,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752229266] [2021-11-20 06:54:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:54:01,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:54:01,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:54:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:54:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:54:01,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-11-20 06:54:01,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 771 transitions, 17915 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:01,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:54:01,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-11-20 06:54:01,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:54:08,700 INFO L129 PetriNetUnfolder]: 4015/12945 cut-off events. [2021-11-20 06:54:08,700 INFO L130 PetriNetUnfolder]: For 177388/177388 co-relation queries the response was YES. [2021-11-20 06:54:08,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63269 conditions, 12945 events. 4015/12945 cut-off events. For 177388/177388 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 144337 event pairs, 2353 based on Foata normal form. 1/12626 useless extension candidates. Maximal degree in co-relation 63126. Up to 5783 conditions per place. [2021-11-20 06:54:09,021 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 540 selfloop transitions, 300 changer transitions 0/903 dead transitions. [2021-11-20 06:54:09,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 903 transitions, 21582 flow [2021-11-20 06:54:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:54:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 06:54:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1886 transitions. [2021-11-20 06:54:09,025 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5069892473118279 [2021-11-20 06:54:09,025 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1886 transitions. [2021-11-20 06:54:09,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1886 transitions. [2021-11-20 06:54:09,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:54:09,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1886 transitions. [2021-11-20 06:54:09,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.3) internal successors, (1886), 20 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:09,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:09,033 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:09,034 INFO L186 Difference]: Start difference. First operand has 462 places, 771 transitions, 17915 flow. Second operand 20 states and 1886 transitions. [2021-11-20 06:54:09,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 903 transitions, 21582 flow [2021-11-20 06:54:10,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 903 transitions, 21118 flow, removed 203 selfloop flow, removed 6 redundant places. [2021-11-20 06:54:10,993 INFO L242 Difference]: Finished difference. Result has 486 places, 801 transitions, 19133 flow [2021-11-20 06:54:10,994 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=17506, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=19133, PETRI_PLACES=486, PETRI_TRANSITIONS=801} [2021-11-20 06:54:10,995 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 314 predicate places. [2021-11-20 06:54:10,995 INFO L470 AbstractCegarLoop]: Abstraction has has 486 places, 801 transitions, 19133 flow [2021-11-20 06:54:10,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:10,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:54:10,996 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:54:10,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 06:54:10,996 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:54:10,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:54:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash 888599505, now seen corresponding path program 16 times [2021-11-20 06:54:10,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:54:10,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600358014] [2021-11-20 06:54:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:54:10,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:54:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:54:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:54:11,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:54:11,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600358014] [2021-11-20 06:54:11,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600358014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:54:11,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:54:11,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 06:54:11,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652787326] [2021-11-20 06:54:11,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:54:11,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:54:11,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:54:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:54:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:54:11,586 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-11-20 06:54:11,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 801 transitions, 19133 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:11,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:54:11,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-11-20 06:54:11,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:54:18,717 INFO L129 PetriNetUnfolder]: 4015/12834 cut-off events. [2021-11-20 06:54:18,718 INFO L130 PetriNetUnfolder]: For 179554/179616 co-relation queries the response was YES. [2021-11-20 06:54:18,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63471 conditions, 12834 events. 4015/12834 cut-off events. For 179554/179616 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 143990 event pairs, 1533 based on Foata normal form. 25/12551 useless extension candidates. Maximal degree in co-relation 63316. Up to 4588 conditions per place. [2021-11-20 06:54:19,024 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 554 selfloop transitions, 322 changer transitions 0/939 dead transitions. [2021-11-20 06:54:19,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 939 transitions, 22631 flow [2021-11-20 06:54:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:54:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:54:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1989 transitions. [2021-11-20 06:54:19,026 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5092165898617511 [2021-11-20 06:54:19,027 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1989 transitions. [2021-11-20 06:54:19,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1989 transitions. [2021-11-20 06:54:19,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:54:19,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1989 transitions. [2021-11-20 06:54:19,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.71428571428571) internal successors, (1989), 21 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:19,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:19,035 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:19,035 INFO L186 Difference]: Start difference. First operand has 486 places, 801 transitions, 19133 flow. Second operand 21 states and 1989 transitions. [2021-11-20 06:54:19,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 939 transitions, 22631 flow [2021-11-20 06:54:20,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 939 transitions, 22394 flow, removed 78 selfloop flow, removed 6 redundant places. [2021-11-20 06:54:20,955 INFO L242 Difference]: Finished difference. Result has 508 places, 825 transitions, 20237 flow [2021-11-20 06:54:20,956 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=18900, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=20237, PETRI_PLACES=508, PETRI_TRANSITIONS=825} [2021-11-20 06:54:20,957 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 336 predicate places. [2021-11-20 06:54:20,957 INFO L470 AbstractCegarLoop]: Abstraction has has 508 places, 825 transitions, 20237 flow [2021-11-20 06:54:20,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:20,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:54:20,958 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:54:20,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 06:54:20,958 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-20 06:54:20,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:54:20,958 INFO L85 PathProgramCache]: Analyzing trace with hash 954680869, now seen corresponding path program 17 times [2021-11-20 06:54:20,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:54:20,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975917837] [2021-11-20 06:54:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:54:20,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:54:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:54:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:54:21,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:54:21,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975917837] [2021-11-20 06:54:21,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975917837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:54:21,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:54:21,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 06:54:21,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890761058] [2021-11-20 06:54:21,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:54:21,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:54:21,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:54:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:54:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:54:21,547 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-11-20 06:54:21,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 825 transitions, 20237 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:21,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:54:21,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-11-20 06:54:21,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand