./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/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_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/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_649b2c92-74e0-4610-800a-db6dbe322341/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 ec11f673f0852354e1b011c47ea1690182c02849435cfe6b9232c63dc6ffceb8 --- 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 19:31:48,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:31:48,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:31:48,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:31:48,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:31:48,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:31:48,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:31:48,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:31:48,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:31:48,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:31:48,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:31:48,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:31:48,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:31:48,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:31:48,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:31:48,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:31:48,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:31:48,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:31:48,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:31:48,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:31:48,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:31:48,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:31:48,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:31:48,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:31:48,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:31:48,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:31:48,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:31:48,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:31:48,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:31:48,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:31:48,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:31:48,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:31:48,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:31:48,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:31:48,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:31:48,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:31:48,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:31:48,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:31:48,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:31:48,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:31:48,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:31:48,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:31:48,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:31:48,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:31:48,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:31:48,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:31:48,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:31:48,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:31:48,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:31:48,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:31:48,093 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:31:48,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:31:48,093 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:31:48,093 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:31:48,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:31:48,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:31:48,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:31:48,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:31:48,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:31:48,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:31:48,095 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:31:48,095 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:31:48,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:31:48,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:31:48,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:31:48,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:31:48,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:31:48,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:31:48,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:31:48,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:31:48,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:31:48,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:31:48,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:31:48,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:31:48,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:31:48,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:31:48,098 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:31:48,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:31:48,098 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:31:48,098 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_649b2c92-74e0-4610-800a-db6dbe322341/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec11f673f0852354e1b011c47ea1690182c02849435cfe6b9232c63dc6ffceb8 [2022-12-13 19:31:48,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:31:48,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:31:48,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:31:48,309 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:31:48,309 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:31:48,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-12-13 19:31:50,978 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:31:51,134 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:31:51,135 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-12-13 19:31:51,140 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/data/ee6069c40/f0cff3e986e44c649bc46ce67e33a0f3/FLAGf98db0daa [2022-12-13 19:31:51,153 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/data/ee6069c40/f0cff3e986e44c649bc46ce67e33a0f3 [2022-12-13 19:31:51,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:31:51,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:31:51,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:31:51,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:31:51,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:31:51,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64189de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51, skipping insertion in model container [2022-12-13 19:31:51,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:31:51,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:31:51,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:31:51,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:31:51,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:31:51,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:31:51,301 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:31:51,301 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:31:51,302 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:31:51,303 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:31:51,308 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_649b2c92-74e0-4610-800a-db6dbe322341/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-12-13 19:31:51,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:31:51,316 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:31:51,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:31:51,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:31:51,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:31:51,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:31:51,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:31:51,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:31:51,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:31:51,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:31:51,334 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_649b2c92-74e0-4610-800a-db6dbe322341/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-12-13 19:31:51,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:31:51,345 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:31:51,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51 WrapperNode [2022-12-13 19:31:51,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:31:51,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:31:51,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:31:51,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:31:51,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,372 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 141 [2022-12-13 19:31:51,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:31:51,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:31:51,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:31:51,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:31:51,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,389 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:31:51,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:31:51,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:31:51,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:31:51,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (1/1) ... [2022-12-13 19:31:51,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:31:51,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:31:51,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:31:51,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:31:51,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:31:51,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 19:31:51,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 19:31:51,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 19:31:51,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 19:31:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 19:31:51,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 19:31:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 19:31:51,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 19:31:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:31:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:31:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:31:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 19:31:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 19:31:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:31:51,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:31:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:31:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:31:51,442 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 19:31:51,524 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:31:51,526 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:31:51,752 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:31:51,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:31:51,842 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 19:31:51,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:31:51 BoogieIcfgContainer [2022-12-13 19:31:51,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:31:51,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:31:51,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:31:51,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:31:51,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:31:51" (1/3) ... [2022-12-13 19:31:51,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7768366d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:31:51, skipping insertion in model container [2022-12-13 19:31:51,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:51" (2/3) ... [2022-12-13 19:31:51,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7768366d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:31:51, skipping insertion in model container [2022-12-13 19:31:51,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:31:51" (3/3) ... [2022-12-13 19:31:51,852 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-12-13 19:31:51,866 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:31:51,875 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:31:51,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 19:31:51,875 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:31:51,938 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 19:31:51,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 146 transitions, 324 flow [2022-12-13 19:31:52,009 INFO L130 PetriNetUnfolder]: 10/142 cut-off events. [2022-12-13 19:31:52,010 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 19:31:52,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 142 events. 10/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-12-13 19:31:52,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 146 transitions, 324 flow [2022-12-13 19:31:52,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 119 transitions, 259 flow [2022-12-13 19:31:52,021 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:31:52,029 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 119 transitions, 259 flow [2022-12-13 19:31:52,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 119 transitions, 259 flow [2022-12-13 19:31:52,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 119 transitions, 259 flow [2022-12-13 19:31:52,054 INFO L130 PetriNetUnfolder]: 9/119 cut-off events. [2022-12-13 19:31:52,054 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:31:52,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 119 events. 9/119 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-12-13 19:31:52,056 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2022-12-13 19:31:56,083 INFO L134 LiptonReduction]: Checked pairs total: 3120 [2022-12-13 19:31:56,084 INFO L136 LiptonReduction]: Total number of compositions: 102 [2022-12-13 19:31:56,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:31:56,099 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;@544eeea9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:31:56,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-12-13 19:31:56,101 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-12-13 19:31:56,101 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:31:56,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:56,102 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:31:56,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:31:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash 637002, now seen corresponding path program 1 times [2022-12-13 19:31:56,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:56,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959006108] [2022-12-13 19:31:56,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:56,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:56,311 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 19:31:56,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:56,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959006108] [2022-12-13 19:31:56,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959006108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:56,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:56,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:31:56,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763036062] [2022-12-13 19:31:56,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:56,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:31:56,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:56,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:31:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:31:56,347 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:31:56,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 19:31:56,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:56,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:31:56,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:57,147 INFO L130 PetriNetUnfolder]: 8857/11548 cut-off events. [2022-12-13 19:31:57,147 INFO L131 PetriNetUnfolder]: For 723/723 co-relation queries the response was YES. [2022-12-13 19:31:57,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23763 conditions, 11548 events. 8857/11548 cut-off events. For 723/723 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 53102 event pairs, 2817 based on Foata normal form. 0/3638 useless extension candidates. Maximal degree in co-relation 21576. Up to 11343 conditions per place. [2022-12-13 19:31:57,215 INFO L137 encePairwiseOnDemand]: 227/248 looper letters, 51 selfloop transitions, 7 changer transitions 2/60 dead transitions. [2022-12-13 19:31:57,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 279 flow [2022-12-13 19:31:57,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:31:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 406 transitions. [2022-12-13 19:31:57,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5456989247311828 [2022-12-13 19:31:57,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 406 transitions. [2022-12-13 19:31:57,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 406 transitions. [2022-12-13 19:31:57,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:57,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 406 transitions. [2022-12-13 19:31:57,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 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 19:31:57,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:31:57,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:31:57,241 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 99 flow. Second operand 3 states and 406 transitions. [2022-12-13 19:31:57,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 279 flow [2022-12-13 19:31:57,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 255 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 19:31:57,249 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 151 flow [2022-12-13 19:31:57,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2022-12-13 19:31:57,253 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2022-12-13 19:31:57,254 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 151 flow [2022-12-13 19:31:57,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 19:31:57,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:57,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:31:57,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:31:57,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:31:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash 637005, now seen corresponding path program 1 times [2022-12-13 19:31:57,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:57,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056546805] [2022-12-13 19:31:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:57,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:57,322 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 19:31:57,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:57,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056546805] [2022-12-13 19:31:57,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056546805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:57,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:57,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:31:57,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359829412] [2022-12-13 19:31:57,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:57,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:31:57,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:31:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:31:57,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:31:57,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 19:31:57,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:57,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:31:57,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:58,430 INFO L130 PetriNetUnfolder]: 14747/19248 cut-off events. [2022-12-13 19:31:58,430 INFO L131 PetriNetUnfolder]: For 1155/1155 co-relation queries the response was YES. [2022-12-13 19:31:58,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52376 conditions, 19248 events. 14747/19248 cut-off events. For 1155/1155 co-relation queries the response was YES. Maximal size of possible extension queue 1280. Compared 93547 event pairs, 8405 based on Foata normal form. 0/9288 useless extension candidates. Maximal degree in co-relation 18676. Up to 13079 conditions per place. [2022-12-13 19:31:58,520 INFO L137 encePairwiseOnDemand]: 244/248 looper letters, 71 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2022-12-13 19:31:58,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 74 transitions, 394 flow [2022-12-13 19:31:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:31:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2022-12-13 19:31:58,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2022-12-13 19:31:58,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2022-12-13 19:31:58,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2022-12-13 19:31:58,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:58,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2022-12-13 19:31:58,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 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 19:31:58,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:31:58,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:31:58,529 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 151 flow. Second operand 3 states and 402 transitions. [2022-12-13 19:31:58,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 74 transitions, 394 flow [2022-12-13 19:31:58,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:31:58,530 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 155 flow [2022-12-13 19:31:58,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2022-12-13 19:31:58,531 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2022-12-13 19:31:58,531 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 155 flow [2022-12-13 19:31:58,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 19:31:58,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:58,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:31:58,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:31:58,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:31:58,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash 19747730, now seen corresponding path program 1 times [2022-12-13 19:31:58,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:58,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097347970] [2022-12-13 19:31:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:58,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:58,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:58,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097347970] [2022-12-13 19:31:58,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097347970] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:31:58,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917924615] [2022-12-13 19:31:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:58,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:31:58,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:31:58,592 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:31:58,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:31:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:58,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:31:58,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:31:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:58,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:31:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:58,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917924615] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:31:58,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:31:58,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 19:31:58,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706030647] [2022-12-13 19:31:58,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:31:58,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:31:58,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:58,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:31:58,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:31:58,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:31:58,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 0 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 19:31:58,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:58,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:31:58,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:32:01,255 INFO L130 PetriNetUnfolder]: 33977/44052 cut-off events. [2022-12-13 19:32:01,255 INFO L131 PetriNetUnfolder]: For 3340/3340 co-relation queries the response was YES. [2022-12-13 19:32:01,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123772 conditions, 44052 events. 33977/44052 cut-off events. For 3340/3340 co-relation queries the response was YES. Maximal size of possible extension queue 2076. Compared 238081 event pairs, 7121 based on Foata normal form. 0/22962 useless extension candidates. Maximal degree in co-relation 61568. Up to 30083 conditions per place. [2022-12-13 19:32:01,478 INFO L137 encePairwiseOnDemand]: 244/248 looper letters, 189 selfloop transitions, 10 changer transitions 0/199 dead transitions. [2022-12-13 19:32:01,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 199 transitions, 1069 flow [2022-12-13 19:32:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:32:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:32:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 968 transitions. [2022-12-13 19:32:01,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5576036866359447 [2022-12-13 19:32:01,481 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 968 transitions. [2022-12-13 19:32:01,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 968 transitions. [2022-12-13 19:32:01,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:32:01,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 968 transitions. [2022-12-13 19:32:01,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.28571428571428) internal successors, (968), 7 states have internal predecessors, (968), 0 states have call successors, (0), 0 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 19:32:01,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 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 19:32:01,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 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 19:32:01,485 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 155 flow. Second operand 7 states and 968 transitions. [2022-12-13 19:32:01,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 199 transitions, 1069 flow [2022-12-13 19:32:01,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 199 transitions, 1066 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:32:01,489 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 226 flow [2022-12-13 19:32:01,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2022-12-13 19:32:01,489 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2022-12-13 19:32:01,489 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 226 flow [2022-12-13 19:32:01,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 0 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 19:32:01,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:32:01,490 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:32:01,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:32:01,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:32:01,691 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:32:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash 19747728, now seen corresponding path program 1 times [2022-12-13 19:32:01,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:01,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991348876] [2022-12-13 19:32:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:01,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:32:01,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:01,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991348876] [2022-12-13 19:32:01,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991348876] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:32:01,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197042139] [2022-12-13 19:32:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:01,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:32:01,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:32:01,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:32:01,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:32:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:01,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:32:01,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:32:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:32:01,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:32:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:32:01,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197042139] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:32:01,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:32:01,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 19:32:01,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503091855] [2022-12-13 19:32:01,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:32:01,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:32:01,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:01,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:32:01,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:32:01,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:32:01,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 0 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 19:32:01,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:32:01,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:32:01,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:32:08,481 INFO L130 PetriNetUnfolder]: 86645/117274 cut-off events. [2022-12-13 19:32:08,481 INFO L131 PetriNetUnfolder]: For 50573/50573 co-relation queries the response was YES. [2022-12-13 19:32:08,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346035 conditions, 117274 events. 86645/117274 cut-off events. For 50573/50573 co-relation queries the response was YES. Maximal size of possible extension queue 5206. Compared 788537 event pairs, 10667 based on Foata normal form. 4210/78152 useless extension candidates. Maximal degree in co-relation 183072. Up to 72637 conditions per place. [2022-12-13 19:32:08,973 INFO L137 encePairwiseOnDemand]: 229/248 looper letters, 132 selfloop transitions, 90 changer transitions 0/222 dead transitions. [2022-12-13 19:32:08,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 222 transitions, 1499 flow [2022-12-13 19:32:08,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:32:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:32:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 980 transitions. [2022-12-13 19:32:08,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2022-12-13 19:32:08,976 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 980 transitions. [2022-12-13 19:32:08,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 980 transitions. [2022-12-13 19:32:08,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:32:08,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 980 transitions. [2022-12-13 19:32:08,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 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 19:32:08,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 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 19:32:08,981 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 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 19:32:08,981 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 226 flow. Second operand 7 states and 980 transitions. [2022-12-13 19:32:08,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 222 transitions, 1499 flow [2022-12-13 19:32:09,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 222 transitions, 1419 flow, removed 36 selfloop flow, removed 1 redundant places. [2022-12-13 19:32:09,066 INFO L231 Difference]: Finished difference. Result has 62 places, 133 transitions, 1213 flow [2022-12-13 19:32:09,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1213, PETRI_PLACES=62, PETRI_TRANSITIONS=133} [2022-12-13 19:32:09,067 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 14 predicate places. [2022-12-13 19:32:09,067 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 133 transitions, 1213 flow [2022-12-13 19:32:09,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 0 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 19:32:09,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:32:09,067 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:32:09,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 19:32:09,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:32:09,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:32:09,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:09,269 INFO L85 PathProgramCache]: Analyzing trace with hash 19747727, now seen corresponding path program 1 times [2022-12-13 19:32:09,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:09,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830309323] [2022-12-13 19:32:09,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:09,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:32:09,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:09,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830309323] [2022-12-13 19:32:09,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830309323] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:32:09,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800181296] [2022-12-13 19:32:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:09,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:32:09,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:32:09,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:32:09,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:32:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:09,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:32:09,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:32:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:32:09,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:32:09,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800181296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:09,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:32:09,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 19:32:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50412212] [2022-12-13 19:32:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:09,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:32:09,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:09,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:32:09,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:32:09,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:32:09,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 133 transitions, 1213 flow. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 19:32:09,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:32:09,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:32:09,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:32:17,742 INFO L130 PetriNetUnfolder]: 88432/115667 cut-off events. [2022-12-13 19:32:17,742 INFO L131 PetriNetUnfolder]: For 318930/318930 co-relation queries the response was YES. [2022-12-13 19:32:17,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544640 conditions, 115667 events. 88432/115667 cut-off events. For 318930/318930 co-relation queries the response was YES. Maximal size of possible extension queue 5208. Compared 697369 event pairs, 18149 based on Foata normal form. 11496/92545 useless extension candidates. Maximal degree in co-relation 299860. Up to 72179 conditions per place. [2022-12-13 19:32:18,326 INFO L137 encePairwiseOnDemand]: 229/248 looper letters, 97 selfloop transitions, 66 changer transitions 0/163 dead transitions. [2022-12-13 19:32:18,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 163 transitions, 1752 flow [2022-12-13 19:32:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:32:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:32:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2022-12-13 19:32:18,329 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2022-12-13 19:32:18,329 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2022-12-13 19:32:18,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2022-12-13 19:32:18,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:32:18,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2022-12-13 19:32:18,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 19:32:18,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 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 19:32:18,332 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 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 19:32:18,332 INFO L175 Difference]: Start difference. First operand has 62 places, 133 transitions, 1213 flow. Second operand 4 states and 512 transitions. [2022-12-13 19:32:18,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 163 transitions, 1752 flow [2022-12-13 19:32:20,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 163 transitions, 1636 flow, removed 58 selfloop flow, removed 1 redundant places. [2022-12-13 19:32:20,851 INFO L231 Difference]: Finished difference. Result has 63 places, 146 transitions, 1604 flow [2022-12-13 19:32:20,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1604, PETRI_PLACES=63, PETRI_TRANSITIONS=146} [2022-12-13 19:32:20,852 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2022-12-13 19:32:20,852 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 146 transitions, 1604 flow [2022-12-13 19:32:20,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 19:32:20,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:32:20,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:32:20,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 19:32:21,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:32:21,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:32:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:21,054 INFO L85 PathProgramCache]: Analyzing trace with hash 19747729, now seen corresponding path program 1 times [2022-12-13 19:32:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:21,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237994724] [2022-12-13 19:32:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:21,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:32:21,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:21,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237994724] [2022-12-13 19:32:21,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237994724] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:32:21,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709720069] [2022-12-13 19:32:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:21,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:32:21,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:32:21,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:32:21,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:32:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:21,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:32:21,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:32:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:32:21,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:32:21,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709720069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:21,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:32:21,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 19:32:21,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022220018] [2022-12-13 19:32:21,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:21,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:32:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:21,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:32:21,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:32:21,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:32:21,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 146 transitions, 1604 flow. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 19:32:21,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:32:21,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:32:21,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:32:28,860 INFO L130 PetriNetUnfolder]: 79573/105364 cut-off events. [2022-12-13 19:32:28,860 INFO L131 PetriNetUnfolder]: For 273373/273373 co-relation queries the response was YES. [2022-12-13 19:32:29,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533945 conditions, 105364 events. 79573/105364 cut-off events. For 273373/273373 co-relation queries the response was YES. Maximal size of possible extension queue 5011. Compared 649603 event pairs, 20950 based on Foata normal form. 2804/78084 useless extension candidates. Maximal degree in co-relation 286925. Up to 86819 conditions per place. [2022-12-13 19:32:29,423 INFO L137 encePairwiseOnDemand]: 245/248 looper letters, 179 selfloop transitions, 9 changer transitions 0/188 dead transitions. [2022-12-13 19:32:29,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 188 transitions, 2263 flow [2022-12-13 19:32:29,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:32:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:32:29,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 506 transitions. [2022-12-13 19:32:29,425 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5100806451612904 [2022-12-13 19:32:29,425 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 506 transitions. [2022-12-13 19:32:29,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 506 transitions. [2022-12-13 19:32:29,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:32:29,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 506 transitions. [2022-12-13 19:32:29,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 19:32:29,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 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 19:32:29,428 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 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 19:32:29,428 INFO L175 Difference]: Start difference. First operand has 63 places, 146 transitions, 1604 flow. Second operand 4 states and 506 transitions. [2022-12-13 19:32:29,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 188 transitions, 2263 flow [2022-12-13 19:32:31,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 188 transitions, 2054 flow, removed 104 selfloop flow, removed 1 redundant places. [2022-12-13 19:32:31,653 INFO L231 Difference]: Finished difference. Result has 63 places, 118 transitions, 1162 flow [2022-12-13 19:32:31,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1162, PETRI_PLACES=63, PETRI_TRANSITIONS=118} [2022-12-13 19:32:31,653 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2022-12-13 19:32:31,653 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 118 transitions, 1162 flow [2022-12-13 19:32:31,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 19:32:31,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:32:31,653 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:32:31,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:32:31,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:32:31,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:32:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:31,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1799470631, now seen corresponding path program 1 times [2022-12-13 19:32:31,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:31,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904574862] [2022-12-13 19:32:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:31,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:31,896 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 19:32:31,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:31,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904574862] [2022-12-13 19:32:31,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904574862] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:31,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:32:31,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:32:31,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83621887] [2022-12-13 19:32:31,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:31,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:32:31,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:32:31,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:32:31,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:32:31,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 118 transitions, 1162 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 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 19:32:31,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:32:31,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:32:31,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:32:42,172 INFO L130 PetriNetUnfolder]: 120145/158994 cut-off events. [2022-12-13 19:32:42,172 INFO L131 PetriNetUnfolder]: For 309438/309438 co-relation queries the response was YES. [2022-12-13 19:32:42,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692460 conditions, 158994 events. 120145/158994 cut-off events. For 309438/309438 co-relation queries the response was YES. Maximal size of possible extension queue 7288. Compared 1028269 event pairs, 29421 based on Foata normal form. 0/117974 useless extension candidates. Maximal degree in co-relation 560599. Up to 109107 conditions per place. [2022-12-13 19:32:43,051 INFO L137 encePairwiseOnDemand]: 244/248 looper letters, 215 selfloop transitions, 5 changer transitions 0/220 dead transitions. [2022-12-13 19:32:43,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 220 transitions, 2612 flow [2022-12-13 19:32:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:32:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:32:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2022-12-13 19:32:43,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5295698924731183 [2022-12-13 19:32:43,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2022-12-13 19:32:43,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2022-12-13 19:32:43,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:32:43,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2022-12-13 19:32:43,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 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 19:32:43,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:32:43,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:32:43,056 INFO L175 Difference]: Start difference. First operand has 63 places, 118 transitions, 1162 flow. Second operand 3 states and 394 transitions. [2022-12-13 19:32:43,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 220 transitions, 2612 flow [2022-12-13 19:32:48,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 220 transitions, 2595 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:32:48,609 INFO L231 Difference]: Finished difference. Result has 64 places, 122 transitions, 1229 flow [2022-12-13 19:32:48,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1229, PETRI_PLACES=64, PETRI_TRANSITIONS=122} [2022-12-13 19:32:48,609 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2022-12-13 19:32:48,609 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 122 transitions, 1229 flow [2022-12-13 19:32:48,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 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 19:32:48,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:32:48,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:32:48,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:32:48,610 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:32:48,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:48,610 INFO L85 PathProgramCache]: Analyzing trace with hash -50931898, now seen corresponding path program 1 times [2022-12-13 19:32:48,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:48,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687082238] [2022-12-13 19:32:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:48,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:48,639 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 19:32:48,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:48,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687082238] [2022-12-13 19:32:48,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687082238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:48,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:32:48,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:32:48,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053485552] [2022-12-13 19:32:48,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:48,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:32:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:32:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:32:48,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:32:48,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 122 transitions, 1229 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 19:32:48,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:32:48,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:32:48,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:33:01,175 INFO L130 PetriNetUnfolder]: 144021/190762 cut-off events. [2022-12-13 19:33:01,175 INFO L131 PetriNetUnfolder]: For 404790/404790 co-relation queries the response was YES. [2022-12-13 19:33:01,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854567 conditions, 190762 events. 144021/190762 cut-off events. For 404790/404790 co-relation queries the response was YES. Maximal size of possible extension queue 8340. Compared 1255002 event pairs, 23767 based on Foata normal form. 0/145062 useless extension candidates. Maximal degree in co-relation 719108. Up to 160623 conditions per place. [2022-12-13 19:33:02,490 INFO L137 encePairwiseOnDemand]: 244/248 looper letters, 192 selfloop transitions, 9 changer transitions 0/201 dead transitions. [2022-12-13 19:33:02,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 201 transitions, 2427 flow [2022-12-13 19:33:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:33:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:33:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2022-12-13 19:33:02,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2022-12-13 19:33:02,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2022-12-13 19:33:02,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2022-12-13 19:33:02,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:33:02,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2022-12-13 19:33:02,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 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 19:33:02,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:33:02,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:33:02,494 INFO L175 Difference]: Start difference. First operand has 64 places, 122 transitions, 1229 flow. Second operand 3 states and 392 transitions. [2022-12-13 19:33:02,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 201 transitions, 2427 flow [2022-12-13 19:33:12,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 201 transitions, 2418 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:33:12,954 INFO L231 Difference]: Finished difference. Result has 66 places, 127 transitions, 1328 flow [2022-12-13 19:33:12,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1328, PETRI_PLACES=66, PETRI_TRANSITIONS=127} [2022-12-13 19:33:12,954 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2022-12-13 19:33:12,954 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 127 transitions, 1328 flow [2022-12-13 19:33:12,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 19:33:12,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:33:12,954 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 19:33:12,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:33:12,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:33:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:12,955 INFO L85 PathProgramCache]: Analyzing trace with hash -105324147, now seen corresponding path program 2 times [2022-12-13 19:33:12,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:12,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063785897] [2022-12-13 19:33:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:12,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:33:13,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:13,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063785897] [2022-12-13 19:33:13,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063785897] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:33:13,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121300523] [2022-12-13 19:33:13,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:33:13,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:33:13,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:33:13,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:33:13,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:33:13,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:33:13,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:33:13,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:33:13,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:33:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:33:13,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:33:13,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121300523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:13,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:33:13,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 19:33:13,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979476839] [2022-12-13 19:33:13,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:13,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:33:13,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:13,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:33:13,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:13,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 248 [2022-12-13 19:33:13,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 127 transitions, 1328 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 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 19:33:13,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:33:13,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 248 [2022-12-13 19:33:13,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:33:25,647 INFO L130 PetriNetUnfolder]: 133651/177238 cut-off events. [2022-12-13 19:33:25,647 INFO L131 PetriNetUnfolder]: For 477803/477803 co-relation queries the response was YES. [2022-12-13 19:33:26,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805502 conditions, 177238 events. 133651/177238 cut-off events. For 477803/477803 co-relation queries the response was YES. Maximal size of possible extension queue 7906. Compared 1156455 event pairs, 69369 based on Foata normal form. 3154/137580 useless extension candidates. Maximal degree in co-relation 665917. Up to 177238 conditions per place. [2022-12-13 19:33:26,727 INFO L137 encePairwiseOnDemand]: 246/248 looper letters, 119 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2022-12-13 19:33:26,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 120 transitions, 1453 flow [2022-12-13 19:33:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:33:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:33:26,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2022-12-13 19:33:26,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4852150537634409 [2022-12-13 19:33:26,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2022-12-13 19:33:26,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2022-12-13 19:33:26,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:33:26,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2022-12-13 19:33:26,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 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 19:33:26,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:33:26,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:33:26,730 INFO L175 Difference]: Start difference. First operand has 66 places, 127 transitions, 1328 flow. Second operand 3 states and 361 transitions. [2022-12-13 19:33:26,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 120 transitions, 1453 flow [2022-12-13 19:33:32,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 120 transitions, 1378 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-13 19:33:32,069 INFO L231 Difference]: Finished difference. Result has 62 places, 120 transitions, 1140 flow [2022-12-13 19:33:32,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1140, PETRI_PLACES=62, PETRI_TRANSITIONS=120} [2022-12-13 19:33:32,069 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 14 predicate places. [2022-12-13 19:33:32,069 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 120 transitions, 1140 flow [2022-12-13 19:33:32,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 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 19:33:32,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:33:32,069 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 19:33:32,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:33:32,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:33:32,271 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:33:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash -105324149, now seen corresponding path program 2 times [2022-12-13 19:33:32,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:32,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735425322] [2022-12-13 19:33:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:32,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:33:32,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:32,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735425322] [2022-12-13 19:33:32,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735425322] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:33:32,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796796996] [2022-12-13 19:33:32,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:33:32,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:33:32,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:33:32,338 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:33:32,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:33:32,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:33:32,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:33:32,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:33:32,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:33:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:33:32,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:33:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:33:32,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796796996] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:33:32,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:33:32,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 19:33:32,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490325787] [2022-12-13 19:33:32,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:33:32,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:33:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:33:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:33:32,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:33:32,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 120 transitions, 1140 flow. Second operand has 13 states, 13 states have (on average 111.3076923076923) internal successors, (1447), 13 states have internal predecessors, (1447), 0 states have call successors, (0), 0 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 19:33:32,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:33:32,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:33:32,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:34:10,061 INFO L130 PetriNetUnfolder]: 390451/519678 cut-off events. [2022-12-13 19:34:10,061 INFO L131 PetriNetUnfolder]: For 1509096/1509096 co-relation queries the response was YES. [2022-12-13 19:34:11,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2238259 conditions, 519678 events. 390451/519678 cut-off events. For 1509096/1509096 co-relation queries the response was YES. Maximal size of possible extension queue 15401. Compared 3759440 event pairs, 30459 based on Foata normal form. 79736/460918 useless extension candidates. Maximal degree in co-relation 2238236. Up to 142913 conditions per place. [2022-12-13 19:34:13,006 INFO L137 encePairwiseOnDemand]: 233/248 looper letters, 242 selfloop transitions, 363 changer transitions 0/605 dead transitions. [2022-12-13 19:34:13,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 605 transitions, 5977 flow [2022-12-13 19:34:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:34:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:34:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1663 transitions. [2022-12-13 19:34:13,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5588037634408602 [2022-12-13 19:34:13,011 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1663 transitions. [2022-12-13 19:34:13,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1663 transitions. [2022-12-13 19:34:13,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:34:13,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1663 transitions. [2022-12-13 19:34:13,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 138.58333333333334) internal successors, (1663), 12 states have internal predecessors, (1663), 0 states have call successors, (0), 0 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 19:34:13,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 248.0) internal successors, (3224), 13 states have internal predecessors, (3224), 0 states have call successors, (0), 0 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 19:34:13,021 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 248.0) internal successors, (3224), 13 states have internal predecessors, (3224), 0 states have call successors, (0), 0 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 19:34:13,022 INFO L175 Difference]: Start difference. First operand has 62 places, 120 transitions, 1140 flow. Second operand 12 states and 1663 transitions. [2022-12-13 19:34:13,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 605 transitions, 5977 flow [2022-12-13 19:34:17,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 605 transitions, 5976 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:34:17,378 INFO L231 Difference]: Finished difference. Result has 82 places, 435 transitions, 6026 flow [2022-12-13 19:34:17,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6026, PETRI_PLACES=82, PETRI_TRANSITIONS=435} [2022-12-13 19:34:17,378 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 34 predicate places. [2022-12-13 19:34:17,378 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 435 transitions, 6026 flow [2022-12-13 19:34:17,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 111.3076923076923) internal successors, (1447), 13 states have internal predecessors, (1447), 0 states have call successors, (0), 0 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 19:34:17,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:34:17,379 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 19:34:17,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:34:17,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 19:34:17,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:34:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:34:17,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1752254024, now seen corresponding path program 1 times [2022-12-13 19:34:17,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:34:17,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588505701] [2022-12-13 19:34:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:34:17,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:34:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:17,640 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 19:34:17,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:17,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588505701] [2022-12-13 19:34:17,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588505701] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:17,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:17,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:34:17,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320787997] [2022-12-13 19:34:17,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:17,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:34:17,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:17,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:34:17,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:34:17,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:34:17,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 435 transitions, 6026 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 19:34:17,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:34:17,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:34:17,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:35:06,537 INFO L130 PetriNetUnfolder]: 331095/441314 cut-off events. [2022-12-13 19:35:06,538 INFO L131 PetriNetUnfolder]: For 1994903/1994903 co-relation queries the response was YES. [2022-12-13 19:35:07,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413348 conditions, 441314 events. 331095/441314 cut-off events. For 1994903/1994903 co-relation queries the response was YES. Maximal size of possible extension queue 12937. Compared 3146863 event pairs, 175225 based on Foata normal form. 0/335266 useless extension candidates. Maximal degree in co-relation 2413314. Up to 441314 conditions per place. [2022-12-13 19:35:09,875 INFO L137 encePairwiseOnDemand]: 246/248 looper letters, 412 selfloop transitions, 1 changer transitions 0/413 dead transitions. [2022-12-13 19:35:09,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 413 transitions, 6524 flow [2022-12-13 19:35:09,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:35:09,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:35:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2022-12-13 19:35:09,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4879032258064516 [2022-12-13 19:35:09,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2022-12-13 19:35:09,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2022-12-13 19:35:09,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:35:09,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2022-12-13 19:35:09,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 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 19:35:09,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:35:09,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 19:35:09,880 INFO L175 Difference]: Start difference. First operand has 82 places, 435 transitions, 6026 flow. Second operand 3 states and 363 transitions. [2022-12-13 19:35:09,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 413 transitions, 6524 flow [2022-12-13 19:39:36,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 413 transitions, 5774 flow, removed 375 selfloop flow, removed 0 redundant places. [2022-12-13 19:39:36,405 INFO L231 Difference]: Finished difference. Result has 83 places, 413 transitions, 4950 flow [2022-12-13 19:39:36,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=4948, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4950, PETRI_PLACES=83, PETRI_TRANSITIONS=413} [2022-12-13 19:39:36,406 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 35 predicate places. [2022-12-13 19:39:36,406 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 413 transitions, 4950 flow [2022-12-13 19:39:36,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 19:39:36,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:36,406 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 19:39:36,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:39:36,406 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-12-13 19:39:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:36,407 INFO L85 PathProgramCache]: Analyzing trace with hash -715541311, now seen corresponding path program 1 times [2022-12-13 19:39:36,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:36,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498800495] [2022-12-13 19:39:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:36,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:39:36,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:36,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498800495] [2022-12-13 19:39:36,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498800495] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:36,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388658303] [2022-12-13 19:39:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:36,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:36,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:36,442 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:36,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649b2c92-74e0-4610-800a-db6dbe322341/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:39:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:36,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:39:36,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:39:36,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:39:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:39:36,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388658303] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:39:36,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:39:36,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 19:39:36,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230390653] [2022-12-13 19:39:36,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:39:36,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:39:36,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:39:36,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:39:36,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 248 [2022-12-13 19:39:36,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 413 transitions, 4950 flow. Second operand has 7 states, 7 states have (on average 113.14285714285714) internal successors, (792), 7 states have internal predecessors, (792), 0 states have call successors, (0), 0 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 19:39:36,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:36,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 248 [2022-12-13 19:39:36,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:41:17,594 INFO L130 PetriNetUnfolder]: 732873/977310 cut-off events. [2022-12-13 19:41:17,594 INFO L131 PetriNetUnfolder]: For 3799045/3799045 co-relation queries the response was YES. [2022-12-13 19:41:21,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4814359 conditions, 977310 events. 732873/977310 cut-off events. For 3799045/3799045 co-relation queries the response was YES. Maximal size of possible extension queue 26529. Compared 7430149 event pairs, 138849 based on Foata normal form. 0/761758 useless extension candidates. Maximal degree in co-relation 4814323. Up to 277505 conditions per place. [2022-12-13 19:41:24,968 INFO L137 encePairwiseOnDemand]: 245/248 looper letters, 1754 selfloop transitions, 89 changer transitions 0/1843 dead transitions. [2022-12-13 19:41:24,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 1843 transitions, 25724 flow [2022-12-13 19:41:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:41:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:41:24,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 803 transitions. [2022-12-13 19:41:24,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5396505376344086 [2022-12-13 19:41:24,970 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 803 transitions. [2022-12-13 19:41:24,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 803 transitions. [2022-12-13 19:41:24,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:41:24,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 803 transitions. [2022-12-13 19:41:24,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 0 states have call successors, (0), 0 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 19:41:24,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 0 states have call successors, (0), 0 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 19:41:24,974 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 0 states have call successors, (0), 0 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 19:41:24,974 INFO L175 Difference]: Start difference. First operand has 83 places, 413 transitions, 4950 flow. Second operand 6 states and 803 transitions. [2022-12-13 19:41:24,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 1843 transitions, 25724 flow