./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:33:09,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:33:09,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:33:09,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:33:09,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:33:09,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:33:09,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:33:09,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:33:09,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:33:09,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:33:09,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:33:09,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:33:09,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:33:09,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:33:09,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:33:09,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:33:09,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:33:09,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:33:09,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:33:09,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:33:09,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:33:09,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:33:09,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:33:09,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:33:09,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:33:09,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:33:09,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:33:09,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:33:09,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:33:09,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:33:09,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:33:09,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:33:09,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:33:09,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:33:09,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:33:09,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:33:09,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:33:09,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:33:09,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:33:09,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:33:09,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:33:09,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 11:33:09,293 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:33:09,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:33:09,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:33:09,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:33:09,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:33:09,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:33:09,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:33:09,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:33:09,295 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:33:09,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:33:09,295 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:33:09,295 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:33:09,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:33:09,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:33:09,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:33:09,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:33:09,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:33:09,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:33:09,296 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 11:33:09,296 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:33:09,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:33:09,296 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:33:09,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:33:09,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:33:09,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:33:09,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:33:09,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:33:09,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:33:09,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:33:09,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:33:09,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:33:09,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:33:09,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:33:09,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:33:09,298 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:33:09,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:33:09,298 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:33:09,298 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2022-12-13 11:33:09,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:33:09,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:33:09,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:33:09,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:33:09,489 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:33:09,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2022-12-13 11:33:11,987 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:33:12,211 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:33:12,212 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2022-12-13 11:33:12,222 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/data/608240666/bfbce799c9db4a5db652c61e95db12e6/FLAGb870d4329 [2022-12-13 11:33:12,549 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/data/608240666/bfbce799c9db4a5db652c61e95db12e6 [2022-12-13 11:33:12,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:33:12,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:33:12,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:33:12,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:33:12,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:33:12,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:12,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14df80e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12, skipping insertion in model container [2022-12-13 11:33:12,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:12,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:33:12,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:33:12,837 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2022-12-13 11:33:12,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:33:12,867 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:33:12,891 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2022-12-13 11:33:12,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:33:12,924 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:33:12,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12 WrapperNode [2022-12-13 11:33:12,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:33:12,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:33:12,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:33:12,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:33:12,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:12,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:12,969 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2022-12-13 11:33:12,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:33:12,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:33:12,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:33:12,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:33:12,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:12,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:12,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:12,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:12,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:12,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:12,999 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:13,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:13,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:33:13,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:33:13,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:33:13,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:33:13,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (1/1) ... [2022-12-13 11:33:13,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:33:13,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:33:13,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:33:13,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:33:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:33:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:33:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 11:33:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:33:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:33:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 11:33:13,078 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 11:33:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:33:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-12-13 11:33:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:33:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:33:13,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:33:13,080 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:33:13,176 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:33:13,178 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:33:13,410 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:33:13,416 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:33:13,417 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-12-13 11:33:13,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:33:13 BoogieIcfgContainer [2022-12-13 11:33:13,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:33:13,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:33:13,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:33:13,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:33:13,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:33:12" (1/3) ... [2022-12-13 11:33:13,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a694435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:33:13, skipping insertion in model container [2022-12-13 11:33:13,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:12" (2/3) ... [2022-12-13 11:33:13,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a694435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:33:13, skipping insertion in model container [2022-12-13 11:33:13,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:33:13" (3/3) ... [2022-12-13 11:33:13,425 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2022-12-13 11:33:13,431 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:33:13,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:33:13,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 11:33:13,439 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:33:13,489 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 11:33:13,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 216 transitions, 440 flow [2022-12-13 11:33:13,582 INFO L130 PetriNetUnfolder]: 45/306 cut-off events. [2022-12-13 11:33:13,582 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:33:13,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 306 events. 45/306 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1178 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 168. Up to 6 conditions per place. [2022-12-13 11:33:13,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 216 transitions, 440 flow [2022-12-13 11:33:13,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 213 transitions, 434 flow [2022-12-13 11:33:13,595 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:33:13,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 213 transitions, 434 flow [2022-12-13 11:33:13,605 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 213 transitions, 434 flow [2022-12-13 11:33:13,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 213 transitions, 434 flow [2022-12-13 11:33:13,648 INFO L130 PetriNetUnfolder]: 44/303 cut-off events. [2022-12-13 11:33:13,648 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:33:13,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 303 events. 44/303 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1181 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 168. Up to 6 conditions per place. [2022-12-13 11:33:13,653 INFO L119 LiptonReduction]: Number of co-enabled transitions 13800 [2022-12-13 11:33:16,600 INFO L134 LiptonReduction]: Checked pairs total: 27793 [2022-12-13 11:33:16,600 INFO L136 LiptonReduction]: Total number of compositions: 184 [2022-12-13 11:33:16,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:33:16,616 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1686fc0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:33:16,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 11:33:16,619 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 11:33:16,619 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:33:16,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:16,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:33:16,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 11:33:16,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:16,625 INFO L85 PathProgramCache]: Analyzing trace with hash 25645043, now seen corresponding path program 1 times [2022-12-13 11:33:16,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:16,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333585667] [2022-12-13 11:33:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:16,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:16,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333585667] [2022-12-13 11:33:16,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333585667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:16,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:33:16,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:33:16,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281328601] [2022-12-13 11:33:16,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:16,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:33:16,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:16,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:33:16,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:33:16,845 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 400 [2022-12-13 11:33:16,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 77 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:16,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:33:16,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 400 [2022-12-13 11:33:16,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:33:17,049 INFO L130 PetriNetUnfolder]: 481/1039 cut-off events. [2022-12-13 11:33:17,049 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:33:17,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2033 conditions, 1039 events. 481/1039 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5011 event pairs, 414 based on Foata normal form. 65/890 useless extension candidates. Maximal degree in co-relation 2011. Up to 960 conditions per place. [2022-12-13 11:33:17,056 INFO L137 encePairwiseOnDemand]: 374/400 looper letters, 72 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2022-12-13 11:33:17,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 79 transitions, 314 flow [2022-12-13 11:33:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:33:17,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:33:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2022-12-13 11:33:17,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5391666666666667 [2022-12-13 11:33:17,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2022-12-13 11:33:17,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2022-12-13 11:33:17,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:33:17,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2022-12-13 11:33:17,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:17,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:17,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:17,091 INFO L175 Difference]: Start difference. First operand has 59 places, 77 transitions, 162 flow. Second operand 3 states and 647 transitions. [2022-12-13 11:33:17,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 79 transitions, 314 flow [2022-12-13 11:33:17,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:33:17,097 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 124 flow [2022-12-13 11:33:17,099 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2022-12-13 11:33:17,103 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-12-13 11:33:17,103 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 124 flow [2022-12-13 11:33:17,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:17,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:17,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:33:17,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:33:17,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 11:33:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1124887968, now seen corresponding path program 1 times [2022-12-13 11:33:17,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:17,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514370452] [2022-12-13 11:33:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:17,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:17,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:17,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514370452] [2022-12-13 11:33:17,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514370452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:17,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:33:17,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:33:17,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735399488] [2022-12-13 11:33:17,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:17,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:33:17,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:33:17,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:33:17,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 400 [2022-12-13 11:33:17,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:17,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:33:17,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 400 [2022-12-13 11:33:17,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:33:17,420 INFO L130 PetriNetUnfolder]: 696/1534 cut-off events. [2022-12-13 11:33:17,420 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-12-13 11:33:17,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3080 conditions, 1534 events. 696/1534 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9042 event pairs, 38 based on Foata normal form. 0/1308 useless extension candidates. Maximal degree in co-relation 3046. Up to 759 conditions per place. [2022-12-13 11:33:17,431 INFO L137 encePairwiseOnDemand]: 390/400 looper letters, 81 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2022-12-13 11:33:17,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 92 transitions, 382 flow [2022-12-13 11:33:17,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:33:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:33:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2022-12-13 11:33:17,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5258333333333334 [2022-12-13 11:33:17,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2022-12-13 11:33:17,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2022-12-13 11:33:17,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:33:17,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2022-12-13 11:33:17,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:17,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:17,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:17,436 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 124 flow. Second operand 3 states and 631 transitions. [2022-12-13 11:33:17,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 92 transitions, 382 flow [2022-12-13 11:33:17,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:33:17,438 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 160 flow [2022-12-13 11:33:17,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2022-12-13 11:33:17,439 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-12-13 11:33:17,439 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 160 flow [2022-12-13 11:33:17,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:17,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:17,439 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 11:33:17,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:33:17,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 11:33:17,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:17,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1124864785, now seen corresponding path program 1 times [2022-12-13 11:33:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:17,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442422473] [2022-12-13 11:33:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:17,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:33:17,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:33:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:33:17,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:33:17,492 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:33:17,493 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 11:33:17,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 11:33:17,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 11:33:17,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 11:33:17,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 11:33:17,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 11:33:17,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 11:33:17,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 11:33:17,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 11:33:17,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 11:33:17,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 11:33:17,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 11:33:17,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 11:33:17,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 11:33:17,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 11:33:17,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 11:33:17,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 11:33:17,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 11:33:17,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 11:33:17,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 11:33:17,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 11:33:17,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:33:17,499 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 11:33:17,502 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:33:17,502 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 11:33:17,529 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:33:17,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 287 transitions, 592 flow [2022-12-13 11:33:17,573 INFO L130 PetriNetUnfolder]: 76/504 cut-off events. [2022-12-13 11:33:17,573 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 11:33:17,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 504 events. 76/504 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2230 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 308. Up to 9 conditions per place. [2022-12-13 11:33:17,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 287 transitions, 592 flow [2022-12-13 11:33:17,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 287 transitions, 592 flow [2022-12-13 11:33:17,579 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:33:17,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 287 transitions, 592 flow [2022-12-13 11:33:17,579 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 287 transitions, 592 flow [2022-12-13 11:33:17,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 287 transitions, 592 flow [2022-12-13 11:33:17,620 INFO L130 PetriNetUnfolder]: 76/504 cut-off events. [2022-12-13 11:33:17,620 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 11:33:17,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 504 events. 76/504 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2230 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 308. Up to 9 conditions per place. [2022-12-13 11:33:17,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 39744 [2022-12-13 11:33:20,936 INFO L134 LiptonReduction]: Checked pairs total: 114150 [2022-12-13 11:33:20,936 INFO L136 LiptonReduction]: Total number of compositions: 219 [2022-12-13 11:33:20,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:33:20,938 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1686fc0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:33:20,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-13 11:33:20,940 INFO L130 PetriNetUnfolder]: 3/17 cut-off events. [2022-12-13 11:33:20,940 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:33:20,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:20,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:33:20,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 11:33:20,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1345789756, now seen corresponding path program 1 times [2022-12-13 11:33:20,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:20,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014788171] [2022-12-13 11:33:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:20,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:20,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:20,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014788171] [2022-12-13 11:33:20,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014788171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:20,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:33:20,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:33:20,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723134465] [2022-12-13 11:33:20,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:20,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:33:20,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:20,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:33:20,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:33:20,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 506 [2022-12-13 11:33:20,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 128 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:20,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:33:20,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 506 [2022-12-13 11:33:20,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:33:24,397 INFO L130 PetriNetUnfolder]: 31960/50631 cut-off events. [2022-12-13 11:33:24,397 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2022-12-13 11:33:24,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99755 conditions, 50631 events. 31960/50631 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 384860 event pairs, 22487 based on Foata normal form. 5210/41956 useless extension candidates. Maximal degree in co-relation 34475. Up to 48929 conditions per place. [2022-12-13 11:33:24,648 INFO L137 encePairwiseOnDemand]: 469/506 looper letters, 106 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2022-12-13 11:33:24,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 122 transitions, 478 flow [2022-12-13 11:33:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:33:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:33:24,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 863 transitions. [2022-12-13 11:33:24,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5685111989459816 [2022-12-13 11:33:24,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 863 transitions. [2022-12-13 11:33:24,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 863 transitions. [2022-12-13 11:33:24,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:33:24,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 863 transitions. [2022-12-13 11:33:24,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:24,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:24,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:24,654 INFO L175 Difference]: Start difference. First operand has 98 places, 128 transitions, 274 flow. Second operand 3 states and 863 transitions. [2022-12-13 11:33:24,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 122 transitions, 478 flow [2022-12-13 11:33:24,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 122 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:33:24,657 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 226 flow [2022-12-13 11:33:24,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2022-12-13 11:33:24,657 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 3 predicate places. [2022-12-13 11:33:24,657 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 226 flow [2022-12-13 11:33:24,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:24,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:24,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:24,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:33:24,658 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 11:33:24,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash 532193299, now seen corresponding path program 1 times [2022-12-13 11:33:24,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:24,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825984107] [2022-12-13 11:33:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:24,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:24,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:24,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825984107] [2022-12-13 11:33:24,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825984107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:24,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:33:24,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:33:24,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463548475] [2022-12-13 11:33:24,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:24,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:33:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:33:24,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:33:24,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 506 [2022-12-13 11:33:24,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:24,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:33:24,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 506 [2022-12-13 11:33:24,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:33:29,805 INFO L130 PetriNetUnfolder]: 53356/86047 cut-off events. [2022-12-13 11:33:29,805 INFO L131 PetriNetUnfolder]: For 1657/1657 co-relation queries the response was YES. [2022-12-13 11:33:29,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172660 conditions, 86047 events. 53356/86047 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 1747. Compared 728729 event pairs, 15155 based on Foata normal form. 0/67543 useless extension candidates. Maximal degree in co-relation 172497. Up to 49698 conditions per place. [2022-12-13 11:33:30,094 INFO L137 encePairwiseOnDemand]: 490/506 looper letters, 152 selfloop transitions, 8 changer transitions 0/172 dead transitions. [2022-12-13 11:33:30,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 172 transitions, 718 flow [2022-12-13 11:33:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:33:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:33:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2022-12-13 11:33:30,099 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5737812911725956 [2022-12-13 11:33:30,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2022-12-13 11:33:30,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2022-12-13 11:33:30,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:33:30,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2022-12-13 11:33:30,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:30,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:30,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:30,110 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 226 flow. Second operand 3 states and 871 transitions. [2022-12-13 11:33:30,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 172 transitions, 718 flow [2022-12-13 11:33:30,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 172 transitions, 715 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:33:30,119 INFO L231 Difference]: Finished difference. Result has 104 places, 104 transitions, 300 flow [2022-12-13 11:33:30,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=104, PETRI_TRANSITIONS=104} [2022-12-13 11:33:30,120 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 6 predicate places. [2022-12-13 11:33:30,120 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 104 transitions, 300 flow [2022-12-13 11:33:30,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:30,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:30,122 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 11:33:30,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:33:30,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 11:33:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash 437991399, now seen corresponding path program 1 times [2022-12-13 11:33:30,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:30,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302304394] [2022-12-13 11:33:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:33:30,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:30,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302304394] [2022-12-13 11:33:30,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302304394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:30,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:33:30,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:33:30,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672402164] [2022-12-13 11:33:30,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:33:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:33:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:33:30,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 506 [2022-12-13 11:33:30,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 104 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:30,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:33:30,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 506 [2022-12-13 11:33:30,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:33:35,638 INFO L130 PetriNetUnfolder]: 50393/81398 cut-off events. [2022-12-13 11:33:35,639 INFO L131 PetriNetUnfolder]: For 11646/11654 co-relation queries the response was YES. [2022-12-13 11:33:35,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176905 conditions, 81398 events. 50393/81398 cut-off events. For 11646/11654 co-relation queries the response was YES. Maximal size of possible extension queue 1674. Compared 682517 event pairs, 32041 based on Foata normal form. 0/66255 useless extension candidates. Maximal degree in co-relation 102065. Up to 73942 conditions per place. [2022-12-13 11:33:35,908 INFO L137 encePairwiseOnDemand]: 502/506 looper letters, 134 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2022-12-13 11:33:35,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 154 transitions, 694 flow [2022-12-13 11:33:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:33:35,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:33:35,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2022-12-13 11:33:35,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5520421607378129 [2022-12-13 11:33:35,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2022-12-13 11:33:35,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2022-12-13 11:33:35,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:33:35,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2022-12-13 11:33:35,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:35,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:35,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:35,914 INFO L175 Difference]: Start difference. First operand has 104 places, 104 transitions, 300 flow. Second operand 3 states and 838 transitions. [2022-12-13 11:33:35,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 154 transitions, 694 flow [2022-12-13 11:33:35,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 154 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:33:35,958 INFO L231 Difference]: Finished difference. Result has 104 places, 104 transitions, 296 flow [2022-12-13 11:33:35,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=104, PETRI_TRANSITIONS=104} [2022-12-13 11:33:35,959 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 6 predicate places. [2022-12-13 11:33:35,959 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 104 transitions, 296 flow [2022-12-13 11:33:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:35,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:35,960 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 11:33:35,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:33:35,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 11:33:35,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash 437991400, now seen corresponding path program 1 times [2022-12-13 11:33:35,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:35,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671100917] [2022-12-13 11:33:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:35,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:35,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:35,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671100917] [2022-12-13 11:33:35,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671100917] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:33:35,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104380506] [2022-12-13 11:33:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:35,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:35,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:33:35,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:33:35,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:33:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:36,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:33:36,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:33:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:36,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:33:36,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104380506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:36,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:33:36,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 11:33:36,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189810311] [2022-12-13 11:33:36,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:36,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:33:36,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:36,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:33:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:33:36,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 506 [2022-12-13 11:33:36,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 104 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:36,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:33:36,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 506 [2022-12-13 11:33:36,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:33:41,576 INFO L130 PetriNetUnfolder]: 48941/79909 cut-off events. [2022-12-13 11:33:41,576 INFO L131 PetriNetUnfolder]: For 12537/12546 co-relation queries the response was YES. [2022-12-13 11:33:41,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171234 conditions, 79909 events. 48941/79909 cut-off events. For 12537/12546 co-relation queries the response was YES. Maximal size of possible extension queue 1622. Compared 668088 event pairs, 36639 based on Foata normal form. 680/66475 useless extension candidates. Maximal degree in co-relation 100223. Up to 77079 conditions per place. [2022-12-13 11:33:41,850 INFO L137 encePairwiseOnDemand]: 503/506 looper letters, 107 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2022-12-13 11:33:41,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 125 transitions, 560 flow [2022-12-13 11:33:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:33:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:33:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1049 transitions. [2022-12-13 11:33:41,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5182806324110671 [2022-12-13 11:33:41,853 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1049 transitions. [2022-12-13 11:33:41,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1049 transitions. [2022-12-13 11:33:41,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:33:41,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1049 transitions. [2022-12-13 11:33:41,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 262.25) internal successors, (1049), 4 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:41,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 506.0) internal successors, (2530), 5 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:41,857 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 506.0) internal successors, (2530), 5 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:41,857 INFO L175 Difference]: Start difference. First operand has 104 places, 104 transitions, 296 flow. Second operand 4 states and 1049 transitions. [2022-12-13 11:33:41,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 125 transitions, 560 flow [2022-12-13 11:33:41,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 125 transitions, 556 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:33:41,867 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 292 flow [2022-12-13 11:33:41,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2022-12-13 11:33:41,868 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 7 predicate places. [2022-12-13 11:33:41,868 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 292 flow [2022-12-13 11:33:41,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:41,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:41,868 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:41,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:33:42,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0a8add4-74a7-4ae6-8e50-57510263b5b5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:42,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 11:33:42,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:42,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1495721787, now seen corresponding path program 1 times [2022-12-13 11:33:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:42,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417325772] [2022-12-13 11:33:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:42,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:42,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:42,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417325772] [2022-12-13 11:33:42,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417325772] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:42,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:33:42,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:33:42,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805321865] [2022-12-13 11:33:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:42,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:33:42,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:42,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:33:42,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:33:42,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 506 [2022-12-13 11:33:42,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 232.8) internal successors, (1164), 5 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:42,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:33:42,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 506 [2022-12-13 11:33:42,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:33:47,974 INFO L130 PetriNetUnfolder]: 58005/94073 cut-off events. [2022-12-13 11:33:47,974 INFO L131 PetriNetUnfolder]: For 12398/12398 co-relation queries the response was YES. [2022-12-13 11:33:48,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203266 conditions, 94073 events. 58005/94073 cut-off events. For 12398/12398 co-relation queries the response was YES. Maximal size of possible extension queue 1947. Compared 809681 event pairs, 11141 based on Foata normal form. 0/78877 useless extension candidates. Maximal degree in co-relation 203077. Up to 42345 conditions per place. [2022-12-13 11:33:48,329 INFO L137 encePairwiseOnDemand]: 488/506 looper letters, 355 selfloop transitions, 36 changer transitions 0/403 dead transitions. [2022-12-13 11:33:48,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 403 transitions, 1843 flow [2022-12-13 11:33:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:33:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:33:48,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2022-12-13 11:33:48,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669113495200452 [2022-12-13 11:33:48,333 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2022-12-13 11:33:48,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2022-12-13 11:33:48,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:33:48,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2022-12-13 11:33:48,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:48,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 506.0) internal successors, (4048), 8 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:48,340 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 506.0) internal successors, (4048), 8 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:48,340 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 292 flow. Second operand 7 states and 2008 transitions. [2022-12-13 11:33:48,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 403 transitions, 1843 flow [2022-12-13 11:33:48,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 403 transitions, 1836 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:33:48,447 INFO L231 Difference]: Finished difference. Result has 115 places, 131 transitions, 579 flow [2022-12-13 11:33:48,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=579, PETRI_PLACES=115, PETRI_TRANSITIONS=131} [2022-12-13 11:33:48,448 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 17 predicate places. [2022-12-13 11:33:48,448 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 131 transitions, 579 flow [2022-12-13 11:33:48,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 232.8) internal successors, (1164), 5 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:48,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:48,449 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:48,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:33:48,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 11:33:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:48,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1495721786, now seen corresponding path program 1 times [2022-12-13 11:33:48,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:48,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558330145] [2022-12-13 11:33:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:48,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:48,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:48,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558330145] [2022-12-13 11:33:48,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558330145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:48,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:33:48,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:33:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380594461] [2022-12-13 11:33:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:48,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:33:48,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:33:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:33:48,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 506 [2022-12-13 11:33:48,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 131 transitions, 579 flow. Second operand has 5 states, 5 states have (on average 232.8) internal successors, (1164), 5 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:48,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:33:48,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 506 [2022-12-13 11:33:48,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:33:55,279 INFO L130 PetriNetUnfolder]: 56276/91928 cut-off events. [2022-12-13 11:33:55,279 INFO L131 PetriNetUnfolder]: For 67310/67310 co-relation queries the response was YES. [2022-12-13 11:33:55,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225107 conditions, 91928 events. 56276/91928 cut-off events. For 67310/67310 co-relation queries the response was YES. Maximal size of possible extension queue 1948. Compared 796695 event pairs, 10800 based on Foata normal form. 1306/79880 useless extension candidates. Maximal degree in co-relation 224912. Up to 43465 conditions per place. [2022-12-13 11:33:55,679 INFO L137 encePairwiseOnDemand]: 488/506 looper letters, 358 selfloop transitions, 41 changer transitions 0/411 dead transitions. [2022-12-13 11:33:55,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 411 transitions, 2128 flow [2022-12-13 11:33:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:33:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:33:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2022-12-13 11:33:55,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5660643704121965 [2022-12-13 11:33:55,683 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2022-12-13 11:33:55,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2022-12-13 11:33:55,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:33:55,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2022-12-13 11:33:55,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:55,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 506.0) internal successors, (4048), 8 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:55,691 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 506.0) internal successors, (4048), 8 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:55,691 INFO L175 Difference]: Start difference. First operand has 115 places, 131 transitions, 579 flow. Second operand 7 states and 2005 transitions. [2022-12-13 11:33:55,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 411 transitions, 2128 flow [2022-12-13 11:33:55,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 411 transitions, 2128 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:33:55,899 INFO L231 Difference]: Finished difference. Result has 125 places, 143 transitions, 837 flow [2022-12-13 11:33:55,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=837, PETRI_PLACES=125, PETRI_TRANSITIONS=143} [2022-12-13 11:33:55,899 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 27 predicate places. [2022-12-13 11:33:55,899 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 143 transitions, 837 flow [2022-12-13 11:33:55,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 232.8) internal successors, (1164), 5 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:55,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:55,900 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 11:33:55,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:33:55,900 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 11:33:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:55,900 INFO L85 PathProgramCache]: Analyzing trace with hash 3030924, now seen corresponding path program 1 times [2022-12-13 11:33:55,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:55,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845286356] [2022-12-13 11:33:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:55,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:33:55,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:33:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:33:55,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:33:55,918 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:33:55,918 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-12-13 11:33:55,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-12-13 11:33:55,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-12-13 11:33:55,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-12-13 11:33:55,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-12-13 11:33:55,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-12-13 11:33:55,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-12-13 11:33:55,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-12-13 11:33:55,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-12-13 11:33:55,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-12-13 11:33:55,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-12-13 11:33:55,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-12-13 11:33:55,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-12-13 11:33:55,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-12-13 11:33:55,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-12-13 11:33:55,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-12-13 11:33:55,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:33:55,920 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:55,921 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:33:55,921 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 11:33:55,942 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 11:33:55,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 358 transitions, 746 flow [2022-12-13 11:33:56,016 INFO L130 PetriNetUnfolder]: 112/743 cut-off events. [2022-12-13 11:33:56,016 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 11:33:56,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 743 events. 112/743 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3501 event pairs, 1 based on Foata normal form. 0/583 useless extension candidates. Maximal degree in co-relation 512. Up to 16 conditions per place. [2022-12-13 11:33:56,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 358 transitions, 746 flow [2022-12-13 11:33:56,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 358 transitions, 746 flow [2022-12-13 11:33:56,026 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:33:56,026 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 358 transitions, 746 flow [2022-12-13 11:33:56,026 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 358 transitions, 746 flow [2022-12-13 11:33:56,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 358 transitions, 746 flow [2022-12-13 11:33:56,096 INFO L130 PetriNetUnfolder]: 112/743 cut-off events. [2022-12-13 11:33:56,096 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 11:33:56,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 743 events. 112/743 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3501 event pairs, 1 based on Foata normal form. 0/583 useless extension candidates. Maximal degree in co-relation 512. Up to 16 conditions per place. [2022-12-13 11:33:56,123 INFO L119 LiptonReduction]: Number of co-enabled transitions 74520 [2022-12-13 11:33:59,458 INFO L134 LiptonReduction]: Checked pairs total: 232653 [2022-12-13 11:33:59,458 INFO L136 LiptonReduction]: Total number of compositions: 267 [2022-12-13 11:33:59,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:33:59,460 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1686fc0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:33:59,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-12-13 11:33:59,462 INFO L130 PetriNetUnfolder]: 3/17 cut-off events. [2022-12-13 11:33:59,462 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:33:59,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:59,463 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:33:59,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-12-13 11:33:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:59,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2010232199, now seen corresponding path program 1 times [2022-12-13 11:33:59,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:59,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288345092] [2022-12-13 11:33:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:59,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:59,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:59,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288345092] [2022-12-13 11:33:59,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288345092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:59,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:33:59,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:33:59,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908975866] [2022-12-13 11:33:59,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:59,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:33:59,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:59,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:33:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:33:59,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 625 [2022-12-13 11:33:59,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 172 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:59,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:33:59,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 625 [2022-12-13 11:33:59,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand