./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i --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_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/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_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/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_9ec34655-4138-4676-83b5-7fd7fc4ec365/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 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- 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 12:13:01,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:13:01,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:13:01,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:13:01,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:13:01,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:13:01,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:13:01,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:13:01,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:13:01,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:13:01,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:13:01,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:13:01,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:13:01,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:13:01,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:13:01,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:13:01,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:13:01,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:13:01,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:13:01,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:13:01,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:13:01,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:13:01,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:13:01,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:13:01,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:13:01,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:13:01,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:13:01,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:13:01,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:13:01,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:13:01,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:13:01,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:13:01,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:13:01,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:13:01,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:13:01,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:13:01,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:13:01,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:13:01,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:13:01,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:13:01,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:13:01,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:13:01,219 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:13:01,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:13:01,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:13:01,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:13:01,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:13:01,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:13:01,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:13:01,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:13:01,229 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:13:01,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:13:01,229 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:13:01,229 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:13:01,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:13:01,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:13:01,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:13:01,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:13:01,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:13:01,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:13:01,230 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:13:01,231 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:13:01,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:13:01,231 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:13:01,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:13:01,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:13:01,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:13:01,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:13:01,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:13:01,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:13:01,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:13:01,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:13:01,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:13:01,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:13:01,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:13:01,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:13:01,232 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:13:01,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:13:01,233 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:13:01,233 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_9ec34655-4138-4676-83b5-7fd7fc4ec365/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2022-12-13 12:13:01,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:13:01,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:13:01,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:13:01,410 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:13:01,410 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:13:01,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2022-12-13 12:13:03,911 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:13:04,213 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:13:04,214 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2022-12-13 12:13:04,233 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/data/be3d0d061/8c4ecad6e04643f1aa63067f78faf38f/FLAGa3013e68b [2022-12-13 12:13:04,485 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/data/be3d0d061/8c4ecad6e04643f1aa63067f78faf38f [2022-12-13 12:13:04,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:13:04,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:13:04,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:13:04,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:13:04,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:13:04,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:13:04" (1/1) ... [2022-12-13 12:13:04,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326ed222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:04, skipping insertion in model container [2022-12-13 12:13:04,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:13:04" (1/1) ... [2022-12-13 12:13:04,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:13:04,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:13:05,090 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:13:05,090 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:13:05,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:13:05,093 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:13:05,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:13:05,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:13:05,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:13:05,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:13:05,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:13:05,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:13:05,116 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_9ec34655-4138-4676-83b5-7fd7fc4ec365/sv-benchmarks/c/pthread-complex/safestack_relacy.i[78860,78873] [2022-12-13 12:13:05,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:13:05,131 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:13:05,174 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:13:05,175 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:13:05,175 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:13:05,176 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:13:05,176 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:13:05,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:13:05,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:13:05,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:13:05,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:13:05,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:13:05,188 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_9ec34655-4138-4676-83b5-7fd7fc4ec365/sv-benchmarks/c/pthread-complex/safestack_relacy.i[78860,78873] [2022-12-13 12:13:05,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:13:05,297 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:13:05,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05 WrapperNode [2022-12-13 12:13:05,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:13:05,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:13:05,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:13:05,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:13:05,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,362 INFO L138 Inliner]: procedures = 481, calls = 74, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 299 [2022-12-13 12:13:05,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:13:05,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:13:05,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:13:05,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:13:05,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,405 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:13:05,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:13:05,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:13:05,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:13:05,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (1/1) ... [2022-12-13 12:13:05,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:13:05,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:05,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:13:05,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:13:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:13:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:13:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:13:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:13:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:13:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-12-13 12:13:05,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-12-13 12:13:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:13:05,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:13:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:13:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:13:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:13:05,483 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 12:13:05,730 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:13:05,731 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:13:06,040 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:13:06,093 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:13:06,093 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 12:13:06,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:13:06 BoogieIcfgContainer [2022-12-13 12:13:06,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:13:06,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:13:06,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:13:06,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:13:06,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:13:04" (1/3) ... [2022-12-13 12:13:06,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b4d25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:13:06, skipping insertion in model container [2022-12-13 12:13:06,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:05" (2/3) ... [2022-12-13 12:13:06,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b4d25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:13:06, skipping insertion in model container [2022-12-13 12:13:06,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:13:06" (3/3) ... [2022-12-13 12:13:06,101 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2022-12-13 12:13:06,109 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:13:06,118 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:13:06,118 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 12:13:06,118 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:13:06,177 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 12:13:06,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 310 transitions, 628 flow [2022-12-13 12:13:06,273 INFO L130 PetriNetUnfolder]: 19/325 cut-off events. [2022-12-13 12:13:06,273 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:13:06,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 325 events. 19/325 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 562 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 213. Up to 4 conditions per place. [2022-12-13 12:13:06,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 310 transitions, 628 flow [2022-12-13 12:13:06,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 306 transitions, 620 flow [2022-12-13 12:13:06,288 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:13:06,296 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 306 transitions, 620 flow [2022-12-13 12:13:06,298 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 306 transitions, 620 flow [2022-12-13 12:13:06,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 306 transitions, 620 flow [2022-12-13 12:13:06,348 INFO L130 PetriNetUnfolder]: 18/321 cut-off events. [2022-12-13 12:13:06,349 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:13:06,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 321 events. 18/321 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 548 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 213. Up to 4 conditions per place. [2022-12-13 12:13:06,353 INFO L119 LiptonReduction]: Number of co-enabled transitions 9450 [2022-12-13 12:13:13,372 INFO L134 LiptonReduction]: Checked pairs total: 10239 [2022-12-13 12:13:13,372 INFO L136 LiptonReduction]: Total number of compositions: 314 [2022-12-13 12:13:13,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:13:13,387 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;@57bc639d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:13:13,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 12:13:13,389 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 12:13:13,389 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:13:13,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:13,390 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:13:13,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:13:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:13,394 INFO L85 PathProgramCache]: Analyzing trace with hash 42757, now seen corresponding path program 1 times [2022-12-13 12:13:13,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:13,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759682055] [2022-12-13 12:13:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:13,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:13:13,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:13,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759682055] [2022-12-13 12:13:13,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759682055] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:13,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:13,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:13:13,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774212291] [2022-12-13 12:13:13,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:13,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:13,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:13,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 624 [2022-12-13 12:13:13,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 12:13:13,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:13,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 624 [2022-12-13 12:13:13,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:13,752 INFO L130 PetriNetUnfolder]: 147/294 cut-off events. [2022-12-13 12:13:13,752 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:13:13,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 294 events. 147/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 993 event pairs, 110 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 566. Up to 293 conditions per place. [2022-12-13 12:13:13,754 INFO L137 encePairwiseOnDemand]: 613/624 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 12:13:13,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 174 flow [2022-12-13 12:13:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:13,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 897 transitions. [2022-12-13 12:13:13,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2022-12-13 12:13:13,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 897 transitions. [2022-12-13 12:13:13,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 897 transitions. [2022-12-13 12:13:13,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:13,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 897 transitions. [2022-12-13 12:13:13,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 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 12:13:13,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 12:13:13,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 12:13:13,783 INFO L175 Difference]: Start difference. First operand has 46 places, 52 transitions, 112 flow. Second operand 3 states and 897 transitions. [2022-12-13 12:13:13,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 174 flow [2022-12-13 12:13:13,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:13:13,786 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 94 flow [2022-12-13 12:13:13,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2022-12-13 12:13:13,790 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-12-13 12:13:13,791 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 94 flow [2022-12-13 12:13:13,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 12:13:13,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:13,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:13:13,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:13:13,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:13:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:13,793 INFO L85 PathProgramCache]: Analyzing trace with hash 43249, now seen corresponding path program 1 times [2022-12-13 12:13:13,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:13,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908010013] [2022-12-13 12:13:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:13,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:13:13,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:13,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908010013] [2022-12-13 12:13:13,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908010013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:13,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:13,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:13:13,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130220685] [2022-12-13 12:13:13,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:13,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:13,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:13,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:13,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:13,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 624 [2022-12-13 12:13:13,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 12:13:13,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:13,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 624 [2022-12-13 12:13:13,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:14,044 INFO L130 PetriNetUnfolder]: 293/586 cut-off events. [2022-12-13 12:13:14,044 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:13:14,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 586 events. 293/586 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2530 event pairs, 220 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 1176. Up to 294 conditions per place. [2022-12-13 12:13:14,047 INFO L137 encePairwiseOnDemand]: 621/624 looper letters, 78 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2022-12-13 12:13:14,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 81 transitions, 338 flow [2022-12-13 12:13:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:14,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 927 transitions. [2022-12-13 12:13:14,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4951923076923077 [2022-12-13 12:13:14,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 927 transitions. [2022-12-13 12:13:14,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 927 transitions. [2022-12-13 12:13:14,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:14,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 927 transitions. [2022-12-13 12:13:14,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 12:13:14,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 12:13:14,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 12:13:14,059 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 94 flow. Second operand 3 states and 927 transitions. [2022-12-13 12:13:14,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 81 transitions, 338 flow [2022-12-13 12:13:14,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 81 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:13:14,061 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 105 flow [2022-12-13 12:13:14,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2022-12-13 12:13:14,062 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2022-12-13 12:13:14,062 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 105 flow [2022-12-13 12:13:14,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 12:13:14,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:14,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:13:14,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:13:14,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:13:14,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:14,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1345373, now seen corresponding path program 1 times [2022-12-13 12:13:14,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:14,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102336220] [2022-12-13 12:13:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:14,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:14,145 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 12:13:14,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:14,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102336220] [2022-12-13 12:13:14,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102336220] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:13:14,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470649016] [2022-12-13 12:13:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:14,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:14,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:13:14,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:13:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:14,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:13:14,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:14,259 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 12:13:14,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:13:14,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470649016] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:14,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:13:14,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 12:13:14,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838735236] [2022-12-13 12:13:14,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:14,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:13:14,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:14,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:13:14,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:13:14,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 624 [2022-12-13 12:13:14,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 282.75) internal successors, (1131), 4 states have internal predecessors, (1131), 0 states have call successors, (0), 0 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 12:13:14,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:14,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 624 [2022-12-13 12:13:14,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:14,468 INFO L130 PetriNetUnfolder]: 293/585 cut-off events. [2022-12-13 12:13:14,469 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:13:14,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 585 events. 293/585 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2526 event pairs, 220 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 1177. Up to 292 conditions per place. [2022-12-13 12:13:14,470 INFO L137 encePairwiseOnDemand]: 621/624 looper letters, 77 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2022-12-13 12:13:14,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 80 transitions, 341 flow [2022-12-13 12:13:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:13:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:13:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1208 transitions. [2022-12-13 12:13:14,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2022-12-13 12:13:14,473 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1208 transitions. [2022-12-13 12:13:14,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1208 transitions. [2022-12-13 12:13:14,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:14,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1208 transitions. [2022-12-13 12:13:14,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 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 12:13:14,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 0 states have call successors, (0), 0 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 12:13:14,479 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 0 states have call successors, (0), 0 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 12:13:14,479 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 105 flow. Second operand 4 states and 1208 transitions. [2022-12-13 12:13:14,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 80 transitions, 341 flow [2022-12-13 12:13:14,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 80 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:13:14,480 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 103 flow [2022-12-13 12:13:14,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2022-12-13 12:13:14,481 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 12:13:14,481 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 103 flow [2022-12-13 12:13:14,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.75) internal successors, (1131), 4 states have internal predecessors, (1131), 0 states have call successors, (0), 0 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 12:13:14,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:14,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:13:14,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:13:14,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:14,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:13:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1292844738, now seen corresponding path program 1 times [2022-12-13 12:13:14,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:14,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433127234] [2022-12-13 12:13:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:14,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:14,741 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 12:13:14,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:14,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433127234] [2022-12-13 12:13:14,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433127234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:14,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:14,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:13:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239275089] [2022-12-13 12:13:14,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:14,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:14,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:14,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:14,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:14,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 624 [2022-12-13 12:13:14,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 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 12:13:14,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:14,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 624 [2022-12-13 12:13:14,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:14,845 INFO L130 PetriNetUnfolder]: 147/294 cut-off events. [2022-12-13 12:13:14,845 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:13:14,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 294 events. 147/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 992 event pairs, 110 based on Foata normal form. 1/164 useless extension candidates. Maximal degree in co-relation 592. Up to 293 conditions per place. [2022-12-13 12:13:14,847 INFO L137 encePairwiseOnDemand]: 621/624 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-12-13 12:13:14,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 185 flow [2022-12-13 12:13:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2022-12-13 12:13:14,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46634615384615385 [2022-12-13 12:13:14,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2022-12-13 12:13:14,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2022-12-13 12:13:14,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:14,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2022-12-13 12:13:14,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:13:14,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 12:13:14,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 12:13:14,854 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 103 flow. Second operand 3 states and 873 transitions. [2022-12-13 12:13:14,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 185 flow [2022-12-13 12:13:14,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 180 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 12:13:14,855 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 106 flow [2022-12-13 12:13:14,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2022-12-13 12:13:14,855 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2022-12-13 12:13:14,856 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 106 flow [2022-12-13 12:13:14,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 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 12:13:14,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:14,856 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:13:14,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:13:14,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:13:14,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1429715158, now seen corresponding path program 1 times [2022-12-13 12:13:14,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:14,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465665210] [2022-12-13 12:13:14,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:14,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:13:14,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:14,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465665210] [2022-12-13 12:13:14,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465665210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:14,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:14,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:13:14,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747489981] [2022-12-13 12:13:14,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:14,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:14,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:14,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:14,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:14,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 624 [2022-12-13 12:13:14,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 12:13:14,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:14,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 624 [2022-12-13 12:13:14,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:15,055 INFO L130 PetriNetUnfolder]: 91/211 cut-off events. [2022-12-13 12:13:15,055 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:13:15,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 211 events. 91/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 791 event pairs, 22 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 428. Up to 106 conditions per place. [2022-12-13 12:13:15,057 INFO L137 encePairwiseOnDemand]: 617/624 looper letters, 62 selfloop transitions, 3 changer transitions 1/67 dead transitions. [2022-12-13 12:13:15,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 288 flow [2022-12-13 12:13:15,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 898 transitions. [2022-12-13 12:13:15,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4797008547008547 [2022-12-13 12:13:15,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 898 transitions. [2022-12-13 12:13:15,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 898 transitions. [2022-12-13 12:13:15,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:15,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 898 transitions. [2022-12-13 12:13:15,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 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 12:13:15,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 12:13:15,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 12:13:15,075 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 106 flow. Second operand 3 states and 898 transitions. [2022-12-13 12:13:15,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 288 flow [2022-12-13 12:13:15,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 67 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:13:15,079 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 95 flow [2022-12-13 12:13:15,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2022-12-13 12:13:15,080 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-12-13 12:13:15,080 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 95 flow [2022-12-13 12:13:15,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 12:13:15,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:15,081 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:15,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:13:15,082 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:13:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash -433226449, now seen corresponding path program 1 times [2022-12-13 12:13:15,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:15,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328523763] [2022-12-13 12:13:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:15,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:13:15,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:15,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328523763] [2022-12-13 12:13:15,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328523763] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:13:15,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530864735] [2022-12-13 12:13:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:15,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:15,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:15,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:13:15,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:13:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:15,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:13:15,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:13:15,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:13:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:13:15,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530864735] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:13:15,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:13:15,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-13 12:13:15,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387446282] [2022-12-13 12:13:15,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:13:15,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:13:15,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:13:15,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:13:15,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 624 [2022-12-13 12:13:15,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 95 flow. Second operand has 8 states, 8 states have (on average 276.5) internal successors, (2212), 8 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 12:13:15,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:15,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 624 [2022-12-13 12:13:15,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:15,560 INFO L130 PetriNetUnfolder]: 91/189 cut-off events. [2022-12-13 12:13:15,560 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-12-13 12:13:15,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 189 events. 91/189 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 516 event pairs, 66 based on Foata normal form. 1/150 useless extension candidates. Maximal degree in co-relation 430. Up to 187 conditions per place. [2022-12-13 12:13:15,561 INFO L137 encePairwiseOnDemand]: 621/624 looper letters, 34 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2022-12-13 12:13:15,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 173 flow [2022-12-13 12:13:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:13:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:13:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1138 transitions. [2022-12-13 12:13:15,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45592948717948717 [2022-12-13 12:13:15,563 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1138 transitions. [2022-12-13 12:13:15,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1138 transitions. [2022-12-13 12:13:15,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:15,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1138 transitions. [2022-12-13 12:13:15,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 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 12:13:15,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 0 states have call successors, (0), 0 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 12:13:15,568 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 0 states have call successors, (0), 0 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 12:13:15,568 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 95 flow. Second operand 4 states and 1138 transitions. [2022-12-13 12:13:15,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 173 flow [2022-12-13 12:13:15,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:13:15,569 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 108 flow [2022-12-13 12:13:15,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2022-12-13 12:13:15,569 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2022-12-13 12:13:15,570 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 108 flow [2022-12-13 12:13:15,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.5) internal successors, (2212), 8 states have internal predecessors, (2212), 0 states have call successors, (0), 0 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 12:13:15,570 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:15,570 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:13:15,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:13:15,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:15,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:13:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1149491867, now seen corresponding path program 2 times [2022-12-13 12:13:15,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:15,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817463703] [2022-12-13 12:13:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:15,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:13:15,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:13:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:13:15,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:13:15,823 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:13:15,824 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 12:13:15,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 12:13:15,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 12:13:15,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 12:13:15,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 12:13:15,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 12:13:15,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 12:13:15,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 12:13:15,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 12:13:15,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 12:13:15,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:13:15,827 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-12-13 12:13:15,829 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:13:15,829 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 12:13:15,877 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:13:15,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 501 transitions, 1020 flow [2022-12-13 12:13:15,993 INFO L130 PetriNetUnfolder]: 36/566 cut-off events. [2022-12-13 12:13:15,994 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 12:13:15,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 566 events. 36/566 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1818 event pairs, 0 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 420. Up to 8 conditions per place. [2022-12-13 12:13:15,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 476 places, 501 transitions, 1020 flow [2022-12-13 12:13:16,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 476 places, 501 transitions, 1020 flow [2022-12-13 12:13:16,021 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:13:16,021 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 476 places, 501 transitions, 1020 flow [2022-12-13 12:13:16,021 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 476 places, 501 transitions, 1020 flow [2022-12-13 12:13:16,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 501 transitions, 1020 flow [2022-12-13 12:13:16,130 INFO L130 PetriNetUnfolder]: 36/566 cut-off events. [2022-12-13 12:13:16,130 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 12:13:16,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 566 events. 36/566 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1818 event pairs, 0 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 420. Up to 8 conditions per place. [2022-12-13 12:13:16,156 INFO L119 LiptonReduction]: Number of co-enabled transitions 97524 [2022-12-13 12:13:26,071 INFO L134 LiptonReduction]: Checked pairs total: 101071 [2022-12-13 12:13:26,071 INFO L136 LiptonReduction]: Total number of compositions: 492 [2022-12-13 12:13:26,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:13:26,073 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;@57bc639d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:13:26,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 12:13:26,074 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 12:13:26,074 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:13:26,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:26,074 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:13:26,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:13:26,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:26,075 INFO L85 PathProgramCache]: Analyzing trace with hash 80276, now seen corresponding path program 1 times [2022-12-13 12:13:26,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:26,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257346644] [2022-12-13 12:13:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:26,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:13:26,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:26,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257346644] [2022-12-13 12:13:26,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257346644] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:26,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:26,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:13:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953475176] [2022-12-13 12:13:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:26,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:26,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:26,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:26,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 993 [2022-12-13 12:13:26,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 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 12:13:26,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:26,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 993 [2022-12-13 12:13:26,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:27,937 INFO L130 PetriNetUnfolder]: 14998/22002 cut-off events. [2022-12-13 12:13:27,938 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-12-13 12:13:27,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44097 conditions, 22002 events. 14998/22002 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 134861 event pairs, 12140 based on Foata normal form. 234/13836 useless extension candidates. Maximal degree in co-relation 36776. Up to 21933 conditions per place. [2022-12-13 12:13:28,024 INFO L137 encePairwiseOnDemand]: 979/993 looper letters, 83 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2022-12-13 12:13:28,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 88 transitions, 362 flow [2022-12-13 12:13:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1459 transitions. [2022-12-13 12:13:28,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4897616649882511 [2022-12-13 12:13:28,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1459 transitions. [2022-12-13 12:13:28,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1459 transitions. [2022-12-13 12:13:28,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:28,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1459 transitions. [2022-12-13 12:13:28,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 486.3333333333333) internal successors, (1459), 3 states have internal predecessors, (1459), 0 states have call successors, (0), 0 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 12:13:28,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 993.0) internal successors, (3972), 4 states have internal predecessors, (3972), 0 states have call successors, (0), 0 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 12:13:28,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 993.0) internal successors, (3972), 4 states have internal predecessors, (3972), 0 states have call successors, (0), 0 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 12:13:28,033 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 220 flow. Second operand 3 states and 1459 transitions. [2022-12-13 12:13:28,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 88 transitions, 362 flow [2022-12-13 12:13:28,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 362 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:13:28,034 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 196 flow [2022-12-13 12:13:28,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=993, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2022-12-13 12:13:28,035 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -5 predicate places. [2022-12-13 12:13:28,035 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 196 flow [2022-12-13 12:13:28,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 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 12:13:28,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:28,035 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:13:28,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:13:28,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:13:28,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:28,036 INFO L85 PathProgramCache]: Analyzing trace with hash 81101, now seen corresponding path program 1 times [2022-12-13 12:13:28,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:28,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841835395] [2022-12-13 12:13:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:28,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:28,064 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 12:13:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:28,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841835395] [2022-12-13 12:13:28,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841835395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:28,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:28,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:13:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247532046] [2022-12-13 12:13:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:28,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:28,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 993 [2022-12-13 12:13:28,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 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 12:13:28,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:28,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 993 [2022-12-13 12:13:28,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:31,209 INFO L130 PetriNetUnfolder]: 29995/44002 cut-off events. [2022-12-13 12:13:31,209 INFO L131 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-12-13 12:13:31,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88188 conditions, 44002 events. 29995/44002 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 298627 event pairs, 24280 based on Foata normal form. 0/27204 useless extension candidates. Maximal degree in co-relation 88180. Up to 21934 conditions per place. [2022-12-13 12:13:31,356 INFO L137 encePairwiseOnDemand]: 990/993 looper letters, 164 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2022-12-13 12:13:31,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 170 transitions, 706 flow [2022-12-13 12:13:31,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1529 transitions. [2022-12-13 12:13:31,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5132594830480027 [2022-12-13 12:13:31,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1529 transitions. [2022-12-13 12:13:31,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1529 transitions. [2022-12-13 12:13:31,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:31,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1529 transitions. [2022-12-13 12:13:31,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 509.6666666666667) internal successors, (1529), 3 states have internal predecessors, (1529), 0 states have call successors, (0), 0 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 12:13:31,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 993.0) internal successors, (3972), 4 states have internal predecessors, (3972), 0 states have call successors, (0), 0 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 12:13:31,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 993.0) internal successors, (3972), 4 states have internal predecessors, (3972), 0 states have call successors, (0), 0 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 12:13:31,367 INFO L175 Difference]: Start difference. First operand has 80 places, 88 transitions, 196 flow. Second operand 3 states and 1529 transitions. [2022-12-13 12:13:31,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 170 transitions, 706 flow [2022-12-13 12:13:31,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 170 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:13:31,370 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 207 flow [2022-12-13 12:13:31,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=993, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2022-12-13 12:13:31,371 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2022-12-13 12:13:31,371 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 207 flow [2022-12-13 12:13:31,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 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 12:13:31,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:31,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:13:31,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:13:31,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:13:31,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2521049, now seen corresponding path program 1 times [2022-12-13 12:13:31,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:31,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769079205] [2022-12-13 12:13:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:31,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:31,435 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 12:13:31,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:31,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769079205] [2022-12-13 12:13:31,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769079205] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:13:31,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065181989] [2022-12-13 12:13:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:31,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:31,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:31,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:13:31,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:13:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:31,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:13:31,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:31,542 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 12:13:31,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:13:31,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065181989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:31,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:13:31,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 12:13:31,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360910267] [2022-12-13 12:13:31,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:31,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:13:31,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:13:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:13:31,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 993 [2022-12-13 12:13:31,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 454.75) internal successors, (1819), 4 states have internal predecessors, (1819), 0 states have call successors, (0), 0 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 12:13:31,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:31,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 993 [2022-12-13 12:13:31,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:34,937 INFO L130 PetriNetUnfolder]: 29995/44001 cut-off events. [2022-12-13 12:13:34,937 INFO L131 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-12-13 12:13:34,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88191 conditions, 44001 events. 29995/44001 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 298478 event pairs, 24280 based on Foata normal form. 0/27206 useless extension candidates. Maximal degree in co-relation 88181. Up to 21932 conditions per place. [2022-12-13 12:13:35,076 INFO L137 encePairwiseOnDemand]: 990/993 looper letters, 163 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2022-12-13 12:13:35,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 169 transitions, 709 flow [2022-12-13 12:13:35,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:13:35,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:13:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1982 transitions. [2022-12-13 12:13:35,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4989929506545821 [2022-12-13 12:13:35,079 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1982 transitions. [2022-12-13 12:13:35,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1982 transitions. [2022-12-13 12:13:35,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:35,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1982 transitions. [2022-12-13 12:13:35,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 495.5) internal successors, (1982), 4 states have internal predecessors, (1982), 0 states have call successors, (0), 0 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 12:13:35,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 993.0) internal successors, (4965), 5 states have internal predecessors, (4965), 0 states have call successors, (0), 0 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 12:13:35,085 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 993.0) internal successors, (4965), 5 states have internal predecessors, (4965), 0 states have call successors, (0), 0 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 12:13:35,086 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 207 flow. Second operand 4 states and 1982 transitions. [2022-12-13 12:13:35,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 169 transitions, 709 flow [2022-12-13 12:13:35,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 169 transitions, 707 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:13:35,088 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 205 flow [2022-12-13 12:13:35,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=993, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2022-12-13 12:13:35,088 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -2 predicate places. [2022-12-13 12:13:35,088 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 205 flow [2022-12-13 12:13:35,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 454.75) internal successors, (1819), 4 states have internal predecessors, (1819), 0 states have call successors, (0), 0 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 12:13:35,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:35,089 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:13:35,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:13:35,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:35,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:13:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:35,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2085256315, now seen corresponding path program 1 times [2022-12-13 12:13:35,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:35,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969209108] [2022-12-13 12:13:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:35,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:35,356 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 12:13:35,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:35,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969209108] [2022-12-13 12:13:35,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969209108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:35,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:35,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:13:35,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023280925] [2022-12-13 12:13:35,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:35,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:35,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:35,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:35,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 449 out of 993 [2022-12-13 12:13:35,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 12:13:35,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:35,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 449 of 993 [2022-12-13 12:13:35,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:36,786 INFO L130 PetriNetUnfolder]: 14998/22002 cut-off events. [2022-12-13 12:13:36,786 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-12-13 12:13:36,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44105 conditions, 22002 events. 14998/22002 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 134887 event pairs, 12140 based on Foata normal form. 1/13605 useless extension candidates. Maximal degree in co-relation 44094. Up to 21933 conditions per place. [2022-12-13 12:13:36,859 INFO L137 encePairwiseOnDemand]: 990/993 looper letters, 82 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2022-12-13 12:13:36,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 373 flow [2022-12-13 12:13:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1432 transitions. [2022-12-13 12:13:36,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48069822087948977 [2022-12-13 12:13:36,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1432 transitions. [2022-12-13 12:13:36,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1432 transitions. [2022-12-13 12:13:36,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:36,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1432 transitions. [2022-12-13 12:13:36,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 477.3333333333333) internal successors, (1432), 3 states have internal predecessors, (1432), 0 states have call successors, (0), 0 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 12:13:36,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 993.0) internal successors, (3972), 4 states have internal predecessors, (3972), 0 states have call successors, (0), 0 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 12:13:36,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 993.0) internal successors, (3972), 4 states have internal predecessors, (3972), 0 states have call successors, (0), 0 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 12:13:36,867 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 205 flow. Second operand 3 states and 1432 transitions. [2022-12-13 12:13:36,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 373 flow [2022-12-13 12:13:36,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 88 transitions, 368 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 12:13:36,869 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 208 flow [2022-12-13 12:13:36,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=993, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2022-12-13 12:13:36,869 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -1 predicate places. [2022-12-13 12:13:36,869 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 208 flow [2022-12-13 12:13:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 12:13:36,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:36,870 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:36,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:13:36,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:13:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash 570642823, now seen corresponding path program 1 times [2022-12-13 12:13:36,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:36,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089590915] [2022-12-13 12:13:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:36,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:13:36,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:36,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089590915] [2022-12-13 12:13:36,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089590915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:36,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:36,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:13:36,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512272817] [2022-12-13 12:13:36,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:36,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:36,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:36,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:36,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:36,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 993 [2022-12-13 12:13:36,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 12:13:36,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:36,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 993 [2022-12-13 12:13:36,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:38,930 INFO L130 PetriNetUnfolder]: 12993/19175 cut-off events. [2022-12-13 12:13:38,930 INFO L131 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2022-12-13 12:13:38,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38458 conditions, 19175 events. 12993/19175 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 121335 event pairs, 4865 based on Foata normal form. 0/12324 useless extension candidates. Maximal degree in co-relation 38446. Up to 13332 conditions per place. [2022-12-13 12:13:39,014 INFO L137 encePairwiseOnDemand]: 984/993 looper letters, 153 selfloop transitions, 4 changer transitions 1/161 dead transitions. [2022-12-13 12:13:39,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 161 transitions, 676 flow [2022-12-13 12:13:39,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:39,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1507 transitions. [2022-12-13 12:13:39,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5058744545149378 [2022-12-13 12:13:39,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1507 transitions. [2022-12-13 12:13:39,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1507 transitions. [2022-12-13 12:13:39,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:39,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1507 transitions. [2022-12-13 12:13:39,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 502.3333333333333) internal successors, (1507), 3 states have internal predecessors, (1507), 0 states have call successors, (0), 0 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 12:13:39,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 993.0) internal successors, (3972), 4 states have internal predecessors, (3972), 0 states have call successors, (0), 0 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 12:13:39,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 993.0) internal successors, (3972), 4 states have internal predecessors, (3972), 0 states have call successors, (0), 0 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 12:13:39,024 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 208 flow. Second operand 3 states and 1507 transitions. [2022-12-13 12:13:39,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 161 transitions, 676 flow [2022-12-13 12:13:39,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 161 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:13:39,026 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 230 flow [2022-12-13 12:13:39,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=993, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2022-12-13 12:13:39,027 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 0 predicate places. [2022-12-13 12:13:39,027 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 230 flow [2022-12-13 12:13:39,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 12:13:39,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:39,028 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:39,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:13:39,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:13:39,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash 7655432, now seen corresponding path program 1 times [2022-12-13 12:13:39,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:39,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119264068] [2022-12-13 12:13:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:39,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:13:39,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:39,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119264068] [2022-12-13 12:13:39,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119264068] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:13:39,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431765452] [2022-12-13 12:13:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:39,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:39,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:39,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:13:39,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:13:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:39,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:13:39,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:13:39,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:13:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:13:39,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431765452] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:13:39,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:13:39,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-12-13 12:13:39,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782819786] [2022-12-13 12:13:39,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:13:39,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:13:39,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:39,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:13:39,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:13:39,425 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 993 [2022-12-13 12:13:39,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 230 flow. Second operand has 8 states, 8 states have (on average 437.5) internal successors, (3500), 8 states have internal predecessors, (3500), 0 states have call successors, (0), 0 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 12:13:39,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:39,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 993 [2022-12-13 12:13:39,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:41,222 INFO L130 PetriNetUnfolder]: 11083/16453 cut-off events. [2022-12-13 12:13:41,222 INFO L131 PetriNetUnfolder]: For 3444/3444 co-relation queries the response was YES. [2022-12-13 12:13:41,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35713 conditions, 16453 events. 11083/16453 cut-off events. For 3444/3444 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 101566 event pairs, 4082 based on Foata normal form. 1/11914 useless extension candidates. Maximal degree in co-relation 35701. Up to 10605 conditions per place. [2022-12-13 12:13:41,283 INFO L137 encePairwiseOnDemand]: 985/993 looper letters, 149 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2022-12-13 12:13:41,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 159 transitions, 686 flow [2022-12-13 12:13:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:13:41,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:13:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2769 transitions. [2022-12-13 12:13:41,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4647532729103726 [2022-12-13 12:13:41,288 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2769 transitions. [2022-12-13 12:13:41,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2769 transitions. [2022-12-13 12:13:41,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:41,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2769 transitions. [2022-12-13 12:13:41,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 461.5) internal successors, (2769), 6 states have internal predecessors, (2769), 0 states have call successors, (0), 0 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 12:13:41,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 993.0) internal successors, (6951), 7 states have internal predecessors, (6951), 0 states have call successors, (0), 0 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 12:13:41,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 993.0) internal successors, (6951), 7 states have internal predecessors, (6951), 0 states have call successors, (0), 0 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 12:13:41,297 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 230 flow. Second operand 6 states and 2769 transitions. [2022-12-13 12:13:41,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 159 transitions, 686 flow [2022-12-13 12:13:41,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 159 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:13:41,302 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 240 flow [2022-12-13 12:13:41,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=993, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2022-12-13 12:13:41,302 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2022-12-13 12:13:41,303 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 240 flow [2022-12-13 12:13:41,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 437.5) internal successors, (3500), 8 states have internal predecessors, (3500), 0 states have call successors, (0), 0 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 12:13:41,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:41,303 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:41,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:13:41,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec34655-4138-4676-83b5-7fd7fc4ec365/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 12:13:41,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:13:41,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1166851217, now seen corresponding path program 1 times [2022-12-13 12:13:41,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:41,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590503823] [2022-12-13 12:13:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:41,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:13:41,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:41,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590503823] [2022-12-13 12:13:41,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590503823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:41,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:41,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:13:41,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739793247] [2022-12-13 12:13:41,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:41,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:41,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:41,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 993 [2022-12-13 12:13:41,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 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 12:13:41,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:41,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 993 [2022-12-13 12:13:41,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:42,663 INFO L130 PetriNetUnfolder]: 9174/13663 cut-off events. [2022-12-13 12:13:42,664 INFO L131 PetriNetUnfolder]: For 1315/1315 co-relation queries the response was YES. [2022-12-13 12:13:42,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30192 conditions, 13663 events. 9174/13663 cut-off events. For 1315/1315 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 75062 event pairs, 5680 based on Foata normal form. 1/10533 useless extension candidates. Maximal degree in co-relation 30178. Up to 10579 conditions per place. [2022-12-13 12:13:42,713 INFO L137 encePairwiseOnDemand]: 985/993 looper letters, 145 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2022-12-13 12:13:42,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 155 transitions, 674 flow [2022-12-13 12:13:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:13:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1489 transitions. [2022-12-13 12:13:42,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49983215844243034 [2022-12-13 12:13:42,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1489 transitions. [2022-12-13 12:13:42,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1489 transitions. [2022-12-13 12:13:42,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:42,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1489 transitions. [2022-12-13 12:13:42,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 496.3333333333333) internal successors, (1489), 3 states have internal predecessors, (1489), 0 states have call successors, (0), 0 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 12:13:42,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 993.0) internal successors, (3972), 4 states have internal predecessors, (3972), 0 states have call successors, (0), 0 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 12:13:42,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 993.0) internal successors, (3972), 4 states have internal predecessors, (3972), 0 states have call successors, (0), 0 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 12:13:42,720 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 240 flow. Second operand 3 states and 1489 transitions. [2022-12-13 12:13:42,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 155 transitions, 674 flow [2022-12-13 12:13:42,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 155 transitions, 660 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 12:13:42,726 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 247 flow [2022-12-13 12:13:42,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=993, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2022-12-13 12:13:42,726 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 1 predicate places. [2022-12-13 12:13:42,726 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 247 flow [2022-12-13 12:13:42,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 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 12:13:42,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:42,727 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:13:42,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:13:42,727 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:13:42,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash -357316149, now seen corresponding path program 1 times [2022-12-13 12:13:42,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:42,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509741901] [2022-12-13 12:13:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:42,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:13:42,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:13:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:13:42,762 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:13:42,762 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-12-13 12:13:42,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-12-13 12:13:42,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-12-13 12:13:42,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:13:42,764 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:42,765 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:13:42,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 12:13:42,820 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 12:13:42,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 656 places, 692 transitions, 1414 flow [2022-12-13 12:13:42,990 INFO L130 PetriNetUnfolder]: 58/844 cut-off events. [2022-12-13 12:13:42,990 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 12:13:43,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 844 events. 58/844 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3646 event pairs, 1 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 647. Up to 16 conditions per place. [2022-12-13 12:13:43,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 656 places, 692 transitions, 1414 flow [2022-12-13 12:13:43,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 656 places, 692 transitions, 1414 flow [2022-12-13 12:13:43,008 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:13:43,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 656 places, 692 transitions, 1414 flow [2022-12-13 12:13:43,008 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 656 places, 692 transitions, 1414 flow [2022-12-13 12:13:43,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 656 places, 692 transitions, 1414 flow [2022-12-13 12:13:43,176 INFO L130 PetriNetUnfolder]: 58/844 cut-off events. [2022-12-13 12:13:43,176 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 12:13:43,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 844 events. 58/844 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3646 event pairs, 1 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 647. Up to 16 conditions per place. [2022-12-13 12:13:43,246 INFO L119 LiptonReduction]: Number of co-enabled transitions 255150 [2022-12-13 12:13:55,785 INFO L134 LiptonReduction]: Checked pairs total: 267885 [2022-12-13 12:13:55,785 INFO L136 LiptonReduction]: Total number of compositions: 679 [2022-12-13 12:13:55,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:13:55,787 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;@57bc639d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:13:55,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-13 12:13:55,787 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 12:13:55,788 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:13:55,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:55,788 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:13:55,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 12:13:55,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:55,788 INFO L85 PathProgramCache]: Analyzing trace with hash 129882, now seen corresponding path program 1 times [2022-12-13 12:13:55,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:55,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843879731] [2022-12-13 12:13:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:55,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:13:55,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:55,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843879731] [2022-12-13 12:13:55,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843879731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:55,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:55,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:13:55,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508722523] [2022-12-13 12:13:55,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:55,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:55,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:55,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:55,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 626 out of 1371 [2022-12-13 12:13:55,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 138 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 626.6666666666666) internal successors, (1880), 3 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 12:13:55,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:55,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 626 of 1371 [2022-12-13 12:13:55,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:49,562 INFO L130 PetriNetUnfolder]: 637497/831045 cut-off events. [2022-12-13 12:14:49,563 INFO L131 PetriNetUnfolder]: For 12075/12075 co-relation queries the response was YES. [2022-12-13 12:14:50,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666353 conditions, 831045 events. 637497/831045 cut-off events. For 12075/12075 co-relation queries the response was YES. Maximal size of possible extension queue 15353. Compared 5700040 event pairs, 516889 based on Foata normal form. 0/536362 useless extension candidates. Maximal degree in co-relation 427027. Up to 829363 conditions per place. [2022-12-13 12:14:52,723 INFO L137 encePairwiseOnDemand]: 1355/1371 looper letters, 118 selfloop transitions, 1 changer transitions 0/123 dead transitions. [2022-12-13 12:14:52,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 123 transitions, 514 flow [2022-12-13 12:14:52,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:14:52,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:14:52,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2012 transitions. [2022-12-13 12:14:52,727 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4891806467298809 [2022-12-13 12:14:52,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2012 transitions. [2022-12-13 12:14:52,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2012 transitions. [2022-12-13 12:14:52,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:52,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2012 transitions. [2022-12-13 12:14:52,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 670.6666666666666) internal successors, (2012), 3 states have internal predecessors, (2012), 0 states have call successors, (0), 0 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 12:14:52,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1371.0) internal successors, (5484), 4 states have internal predecessors, (5484), 0 states have call successors, (0), 0 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 12:14:52,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1371.0) internal successors, (5484), 4 states have internal predecessors, (5484), 0 states have call successors, (0), 0 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 12:14:52,734 INFO L175 Difference]: Start difference. First operand has 114 places, 138 transitions, 306 flow. Second operand 3 states and 2012 transitions. [2022-12-13 12:14:52,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 123 transitions, 514 flow [2022-12-13 12:14:52,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 514 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:14:52,740 INFO L231 Difference]: Finished difference. Result has 110 places, 123 transitions, 278 flow [2022-12-13 12:14:52,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1371, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=110, PETRI_TRANSITIONS=123} [2022-12-13 12:14:52,740 INFO L288 CegarLoopForPetriNet]: 114 programPoint places, -4 predicate places. [2022-12-13 12:14:52,740 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 123 transitions, 278 flow [2022-12-13 12:14:52,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 626.6666666666666) internal successors, (1880), 3 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 12:14:52,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:52,741 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:14:52,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:14:52,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 12:14:52,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash 131043, now seen corresponding path program 1 times [2022-12-13 12:14:52,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:52,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3414463] [2022-12-13 12:14:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:52,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,764 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 12:14:52,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:52,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3414463] [2022-12-13 12:14:52,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3414463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:52,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:52,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:14:52,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203859837] [2022-12-13 12:14:52,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:52,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:14:52,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:52,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:14:52,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:14:52,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 626 out of 1371 [2022-12-13 12:14:52,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 123 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 626.6666666666666) internal successors, (1880), 3 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 12:14:52,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:52,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 626 of 1371 [2022-12-13 12:14:52,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:46,280 INFO L130 PetriNetUnfolder]: 1274993/1662088 cut-off events. [2022-12-13 12:16:46,280 INFO L131 PetriNetUnfolder]: For 24150/24150 co-relation queries the response was YES. [2022-12-13 12:16:48,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3332699 conditions, 1662088 events. 1274993/1662088 cut-off events. For 24150/24150 co-relation queries the response was YES. Maximal size of possible extension queue 30594. Compared 12208934 event pairs, 1033778 based on Foata normal form. 0/1072723 useless extension candidates. Maximal degree in co-relation 3332690. Up to 829364 conditions per place. [2022-12-13 12:16:53,093 INFO L137 encePairwiseOnDemand]: 1368/1371 looper letters, 234 selfloop transitions, 2 changer transitions 0/240 dead transitions. [2022-12-13 12:16:53,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 240 transitions, 1008 flow [2022-12-13 12:16:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:16:53,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:16:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2115 transitions. [2022-12-13 12:16:53,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5142231947483589 [2022-12-13 12:16:53,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2115 transitions. [2022-12-13 12:16:53,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2115 transitions. [2022-12-13 12:16:53,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:53,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2115 transitions. [2022-12-13 12:16:53,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 705.0) internal successors, (2115), 3 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 12:16:53,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1371.0) internal successors, (5484), 4 states have internal predecessors, (5484), 0 states have call successors, (0), 0 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 12:16:53,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1371.0) internal successors, (5484), 4 states have internal predecessors, (5484), 0 states have call successors, (0), 0 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 12:16:53,104 INFO L175 Difference]: Start difference. First operand has 110 places, 123 transitions, 278 flow. Second operand 3 states and 2115 transitions. [2022-12-13 12:16:53,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 240 transitions, 1008 flow [2022-12-13 12:16:53,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 240 transitions, 1007 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:16:53,116 INFO L231 Difference]: Finished difference. Result has 112 places, 124 transitions, 289 flow [2022-12-13 12:16:53,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1371, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=112, PETRI_TRANSITIONS=124} [2022-12-13 12:16:53,117 INFO L288 CegarLoopForPetriNet]: 114 programPoint places, -2 predicate places. [2022-12-13 12:16:53,117 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 124 transitions, 289 flow [2022-12-13 12:16:53,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 626.6666666666666) internal successors, (1880), 3 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 12:16:53,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:53,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:16:53,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:16:53,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 12:16:53,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:53,118 INFO L85 PathProgramCache]: Analyzing trace with hash 130843, now seen corresponding path program 1 times [2022-12-13 12:16:53,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:53,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214579685] [2022-12-13 12:16:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:53,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:53,140 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 12:16:53,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:53,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214579685] [2022-12-13 12:16:53,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214579685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:16:53,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:16:53,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:16:53,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116264296] [2022-12-13 12:16:53,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:16:53,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:16:53,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:53,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:16:53,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:16:53,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 626 out of 1371 [2022-12-13 12:16:53,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 124 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 626.6666666666666) internal successors, (1880), 3 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 12:16:53,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:53,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 626 of 1371 [2022-12-13 12:16:53,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand